Why security concepts from other countries do not automatically meet German project requirements—and what matters most during a technical review.

Your Project in Germany: An Existing Electrical Safety Plan as a Starting Point

Whether it’s a data center, an industrial facility, or an energy generation plant/power plant: Anyone looking to carry out such a demanding construction or plant project in Germany often already has a proven Electrical Safety Plan in place. It outlines roles, approvals, work procedures, and protective measures, thereby forming an important foundation for the safe execution of electrical work.
This existing plan is valuable. However, it must be tailored to the specific project phase, the on-site organization, and the requirements applicable in Germany. Therefore, what matters most is not merely whether the document is established in the country of origin or within one’s own company, but whether it adequately reflects the actual conditions and local requirements.

The challenge: The Occupational Safety and Health Act (ArbSchG), the Occupational Safety Regulation (BetrSichV), DGUV Regulation 3, and VDE each have their own requirements

A foreign safety concept does not automatically meet German project requirements. The Occupational Safety and Health Act requires, among other things, an appropriate occupational safety and health management system, hazard assessments, documentation, training, and the coordination of multiple employers. When using work equipment, the requirements of the Industrial Safety Regulation also apply.
For electrical systems and equipment, DGUV Regulation 3 and technical rules and standards such as DIN VDE 0105-100, DIN EN 50110-1, and DIN VDE 1000-10 are also relevant. Laws, accident prevention regulations, and technical standards have varying levels of legal weight. In addition, there are requirements regarding structures of responsibility and authority. A robust review must clearly distinguish between these levels and classify them on a project-specific basis.

The Technical Review: TCS aligns your Electrical Safety Plan with German project requirements

Technology Consulting Solutions GmbH systematically reviews existing Electrical Safety Plans for technical, organizational, and operational gaps. The starting point is the existing document and key project data: project phase, equipment and voltage ranges, participating companies, planned activities, and the existing chain of command.
In our target-actual comparison, we examine, among other things, disconnection and switching procedures, work performed in a de-energized state and in the vicinity of live parts, the use of work equipment and personal protective equipment, as well as training, emergency response planning, and defect management. Equally important are clearly defined interfaces between clients, contractors, and subcontractors.

From Identified Gaps to Concrete Solutions: Refining Responsibilities, Qualifications, and Work Procedures

A gap analysis should not merely list deficiencies. It identifies which regulations are missing, unclear, or contradictory, and assesses their significance for the project. This leads to specific recommendations for supplementing or adapting the Electrical Safety Plan.
This particularly often concerns the delineation of tasks and authorities: Who is responsible for the electrical installations? Who is authorized to issue work permits? How are qualified electrical specialists evaluated based on their specific duties? Is a chief responsible electrical specialist (CRES) required and effectively integrated into the organization? Qualification requirements, escalation procedures, and the coordination of multiple employers must function not only on paper but also in actual project workflows.

The result: A practical Electrical Safety Plan for installation, commissioning, and operation

The result of the review is a structured overview of the identified discrepancies and the resulting action items. The client can see which content is already sound, where clarifications are sufficient, and where technical or organizational adjustments are necessary.
This allows the Electrical Safety Plan to be specifically tailored to installation, commissioning, trial operation, or subsequent plant operation. This establishes clear responsibilities, facilitates coordination among project participants, and reduces the risk that unresolved issues will only come to light during critical work. The document review is a technical assessment and not a formal compliance certification or legal advice.

Conclusion: Have your Electrical Safety Plan reviewed: Use a structured gap analysis to get your Germany project off to a safer start

The sooner deviations are identified, the better they can be incorporated into planning, contracts, and workflows. A technical review is therefore particularly useful before safety-critical activities begin or when the project phase, responsibilities, or participating companies change.
Are you planning an electrical engineering project in Germany or would you like to have an existing Electrical Safety Plan reviewed for compliance with German project requirements? Technology Consulting Solutions GmbH can assist you with a structured review and a project-specific gap analysis—available in either German or English. Send us your Electrical Safety Plan and the key project details for an initial technical assessment, Contact us now! (click).

How companies can effectively organize responsibilities by engaging an external chief responsible electrical specialist, free up internal resources, and create sustainable structures.

External CRES: When It’s Appropriate and How to Use It Effectively

An external chief responsible electrical specialist (CRES) is often viewed as a sort of stopgap solution. The previous chief responsible electrical specialist is leaving the company, no one can be found to succeed them on short notice, and so someone from outside the company must step in. However, companies often find that they have grown to the point where a gap has gradually emerged—a gap that now needs to be filled with a qualified chief responsible electrical specialist.

An external chief responsible electrical specialist can also serve as part of a standard organizational model and professionally fill this gap without diverting urgently needed resources to other tasks. It is important to always keep in mind that the chosen solution must work within your own organizational structure. After all, electrical safety is not improved simply because the name of the person in charge appears on the company’s payroll.

What matters most are expertise, actual capacity to act, clear lines of responsibility, and an organizational structure in which the responsibilities assigned can actually be carried out.

When an External CRES May Be Appropriate

The most obvious case is when there is no suitable person within the company who can assume responsibility.

It is important to emphasize the word “suitable” here. An experienced electrical specialist is not automatically the right chief responsible electrical specialist. In addition to the required technical expertise, the person in question must also be able to design systems, make decisions, advocate for requirements vis-à-vis other departments, and exercise technical supervision within their area of responsibility.

Above all, however, she must also be willing to take on this task.

Appointing someone as the chief responsible electrical specialist simply because their name fits best in the organizational chart is not a particularly sound organizational decision.

Another classic scenario for an external solution arises when a current chief responsible electrical specialist leaves the company. Companies cannot always plan for such personnel changes well in advance. At the same time, organizational responsibility does not simply disappear along with the previous employee when they leave. An external CRES can provide the necessary continuity in this situation.

The situation is similar when it comes to new locations, production lines, projects, or business units. Especially during periods of growth, electrical engineering can sometimes change faster than the existing organizational structure can keep up. New facilities are added, areas of responsibility shift, additional electrical specialists are brought on board, and structures that were previously functioning well suddenly reach their limits.

For this reason, a restructuring can also be a good opportunity for an external CRES. Not necessarily because everything went wrong before. An organization that worked exceptionally well for five electrical specialists and a manageable production facility isn’t automatically suited for three locations and multiple departments.

Another scenario pertains specifically to small and medium-sized businesses. While they must fulfill this responsibility just as thoroughly, the actual scope of the work may not justify a dedicated full-time position. It would make little sense to automatically conclude that the organizational need for a role necessitates a full-time position. Furthermore, even if a company has suitable in-house staff, it must ask itself whether this is the most sensible use of this potentially highly valuable resource. Am I perhaps robbing my company of some of the energy that makes my products so incredibly ingenious by saddling my people with this task as well?

And finally, an outside perspective can be particularly helpful. Anyone who has worked within an existing organization for many years knows it inside and out. While this is an advantage, it can sometimes lead to established structures being taken for granted. An external chief responsible electrical specialist inevitably brings a different perspective and needs to have it explained to them why things are regulated the way they are. These questions alone can already be extremely valuable.

Temporary or permanent external?

Not every external CRES performs the same role. For an interim CRES, the focus is generally on a time-limited task. This may involve filling a gap that has arisen, establishing a new division, or restructuring an existing organization. This means that, from the outset, there is a point at which responsibility is to be handed back over.

However, that does not mean that electrical safety itself is a temporary project. It is not. Electrical safety remains an ongoing responsibility as long as the relevant hazards, systems, and electrical work exist.

The only thing that is time-limited is the employment of the person in question.

A permanent external CRES takes a different approach. In this case, a conscious decision is made to fill the position externally on a long-term basis. This can be advisable, for example, when the actual scope of the role does not justify an internal full-time position, or when suitable internal specialists are expected to continue performing their regular operational duties.

In between, there is a rather interesting hybrid model: A chief responsible electrical specialist initially assumes responsibility, establishes or consolidates the necessary structures, and simultaneously develops a suitable internal successor.

The external solution thus not only serves as a stopgap measure, but also paves the way for its own replacement.

Which model is the right one depends on the organization. Factors such as size, number, and type of locations; electrical hazards; available personnel; and, last but not least, the current state of the organization’s CRES management all play a role here. Therefore, there is no single “right” external CRES solution for every company.

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What an external CRES is actually required to do

The appointment alone accomplishes little, even though it is an important step. First, it must be clearly defined exactly which area of responsibility the external chief responsible electrical specialist will assume. Such an area could be an entire location, a business unit, specific systems, or several clearly delineated units.

This distinction must be clear. And not only to management and the CRES itself, but especially to those who work within this structure.

Equally important are the necessary authorities. Those who bear responsibility must be able to make professional decisions within their area of responsibility. Delegating responsibility while continuing to have decisions made elsewhere makes no sense from an organizational standpoint.

This also includes clearly defined responsibilities. Who decides when to assign an qualified electrical specialist? Who is responsible for the electrical system? Who is authorized to approve work? What information must be made available to the chief responsible electrical specialist, and for what changes must they be consulted?

The larger the company grows, the more important these questions—which may sound trivial at first—become.

The CRES must also ensure that inspections, certifications, training, and risk assessments are not carried out as separate, independent tasks in different parts of the company. These activities belong within a single, integrated framework.

Documentation, in particular, must not be allowed to become mere paperwork.

Of course, documentation is necessary. But a folder full of appointments, inspection reports, and training records does not in itself make for good electrical safety management. Rather, useful documentation must show the person in charge where action is needed.

Which certification is about to expire? Which electrical specialists need to update their qualifications? Where have responsibilities not yet been clearly defined? Which risk assessments need to be reviewed due to a change? That’s when documentation transforms from mere proof of compliance into a management tool.

A CRES on paper isn’t enough

An external CRES becomes particularly problematic when its primary purpose is simply to enter a name somewhere in an organizational chart.

A chief responsible electrical specialist who lacks sufficient authority cannot reasonably fulfill their responsibilities. The same applies to an area of responsibility whose boundaries no one knows exactly or that is simply so large that effective technical supervision is practically impossible.

An external CRES must also have access to the necessary information. It should not learn about facilities, personnel, organizational changes, planned work, and identified deficiencies only by chance. This requires cooperation.

For this reason, the external chief responsible electrical specialist must not be treated like a service provider whom one calls occasionally when an electrical problem arises. They are part of the company’s electrical organizational structure and require clearly defined communication channels to senior management, supervisors, and the electrical specialists working on the front lines.

Above all, however, a CRES is not a tool that simply shifts responsibility out of the company. Rather, it is a tool that management can use to fulfill its responsibilities.

How to Effectively Implement an External CRES

An external chief responsible electrical specialist should therefore not start by signing a purchase order, but rather by asking what the actual goal is.

A logical workflow might look something like this, for example:

1. Define the current situation and the goal.
   Why should an external CRES be used? Is it a temporary measure, a rebuilding effort, the consolidation of existing structures, or a permanent external solution?
2. Define areas of responsibility, authority, and points of contact.
   It must be clear what the chief responsible electrical specialist is in charge of, what decisions they can make, and which functions within the company they collaborate with.
3. Assess and prioritize the existing electrical engineering infrastructure.
   Existing structures should not be replaced on a whim. First, determine what is working, where gaps exist, and which issues actually require urgent action.
4. Establish, maintain, or consolidate the operational structure.
   Responsibilities, workforce organization, inspections, qualifications, hazard assessments, work procedures, and documentation must all work together effectively. Not every organization needs the same system.
5. Establish communication and effectiveness monitoring.
   A structure, once established, does not automatically remain effective. Regular communication with senior management, supervisors, and electrical specialists is just as important as verifying whether the established procedures actually work in day-to-day operations.
6. When working on an interim assignment, plan for the handover from the very beginning.
   If an internal successor is planned, they should not be introduced only two weeks before the end of the interim assignment. A successful handover begins well in advance and gradually integrates the future chief responsible electrical specialist into decision-making and organizational structures.

This also makes it clear what criteria should be used to evaluate a functional external CRES solution.

It’s not about how many documents were created. It’s not about how often the external chief responsible electrical specialist was on site at the company. And it’s not just about the fact that a formally correct order exists.

The key factor is whether an electrical engineering organization has been established or is being maintained in which responsibilities are clearly defined, the right people are assigned the appropriate tasks, and safety-related decisions can be made in a timely manner.

Whether the person at the head of this functional structure is an internal employee or an external contractor, however, is just one of several organizational decisions.

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Conclusion

An external chief responsible electrical specialist is much more than just a solution for a short-term staffing gap. When used correctly, they establish clear lines of responsibility, strengthen the electrical engineering organization, and allow valuable internal expertise to remain where it benefits the company the most. Whether this is an interim solution, a permanent arrangement, or intended to lead to a future internal handover is of secondary importance. What matters most is that areas of responsibility, authority, and interfaces are clearly defined and that the external CRES is actually capable of fulfilling their duties. A good external CRES, therefore, isn’t just a name on the organizational chart. They ensure that electrical safety within the company functions in a structured, effective, and sustainable manner.

If you’re interested in an external CRES, we’d be happy to help (click)!

If you’d like to learn more about the different roles, I recommend that you Our Publications, such as the audiobook “The chief responsible electrical specialist: VEFK Structure and Electrical Safety in the Workplace for Business Owners, Specialists, and Managers”. Information and sources of supply can be found on the usual audio book portals as well as on the homepage tcs-engineering.de

Revision of the new VDE 0100-410 Takes Effect Immediately

Berlin, April 1, 2026. According to well-informed sources, the new VDE 0100-410 will usher in a remarkable paradigm shift effective immediately: In the future, insulation to protect against direct contact will no longer be required. The background to this far-reaching new regulation is the ongoing oil crisis. Since insulation is primarily made of plastics, the production of which relies on petroleum, the German federal government, representatives of the professional associations, and VDE-DKE have agreed on a solution that is both pragmatic and forward-looking: In the future, both electrical specialists and lay persons should simply exercise greater caution when working with electricity. Naturally, TCS will incorporate this change into its training and continuing education programs for electrical specialists in accordance with VDE standards.

Support from numerous associations

The rationale given is that the number of deaths from electric shock has fallen significantly in recent decades, meaning there are now few obstacles to such a measure. Pension insurance providers expressly welcomed the move. Representatives of health insurance companies, however, asked whether it might not at least be possible, in this context, to increase the voltage used in order to further reduce the need for treatment in the event of electric shocks. A spokesperson for the Association of German Funeral Orators echoed the health insurers’ inquiry and spoke of a “consistently thought-through care concept.”

Expected Effect of VDE Adjustments on Voter Polls

The federal government is optimistic that this measure will reduce the demand for crude oil by 0.2 to as much as 0.3 per mille over the next ten years. Experts estimate that this will be the most effective of all measures taken so far by the current federal government. Political analysts expect the current decision to boost the government’s poll numbers by roughly twice the amount of crude oil saved.

Update (April 2) — Of course, that was an April Fools’ joke! 1. Nonsense, 2. A government like this wouldn’t do something so ridiculous at this point. ;-)

A practical look at how compliance with electrical standards promotes legal security, system reliability and technological leadership in global industrial environments.

Electrical compliance is a management task,

goes beyond pure electrical safety, combines legal, normative and contractual requirements and at the same time strengthens system reliability, system availability and business stability.

Electrical Compliance: Reliable structures for global technical responsibility

A practical look at how electrical compliance strengthens legal security, system reliability and technical leadership in global industrial environments

Electrical compliance is much more than simply adhering to individual regulations.

For internationally active industrial companies, electrical compliance means establishing clear structures for electrical safety, technical responsibility and reliable processes. This is precisely where its strategic value lies.

Many companies still only see electrical compliance as a duty. This falls short. In practice, good electrical compliance not only protects people, but also systems, delivery capability and company value. Those who manage electrical risks properly reduce failures, avoid downtime and improve system reliability.

This is particularly important for companies with several locations. Different countries have different regulations. Nevertheless, electrical compliance should be thought of as a uniform structure. Local rules must be adhered to, but the overall logic should be globally consistent. This is the only way to create clear responsibilities, robust processes and a credible technical standard.

Electrical compliance is therefore not a marginal issue for the CTO.

It is part of the technical management responsibility. The CTO does not have to implement every measure himself, but he must ensure that it is organized effectively. Three points are crucial here: Selection, organization and control. Responsibility can be delegated, but it can never disappear completely. This is precisely why clear roles, defined responsibilities and robust evidence are so important.

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5. conclusion

Strong electrical compliance not only improves legal certainty. It also increases plant availability, facilitates growth, creates customer confidence and supports international supply chain requirements. Companies with a clean electrical organization appear more professional, reliable and predictable. This is not a side effect, but a real competitive advantage. Electrical compliance is therefore not an additional bureaucratic issue. It is a management tool for safety, reliability and sustainable economic success.

Our free(REALLY free, even WITHOUT having to provide an email address!) paper “5 things you need to be clear about before you qualify and deploy your employees for electrical work.” is available here (click).

If you want to know more about the different roles, I recommend our publications, for example the audio book “The responsible electrical specialist: CRES structure and operational electrical safety for entrepreneurs, specialists and managers”. Information and sources of supply can be found on the usual audio book portals as well as on the homepage tcs-engineering.de

Measurement practice according to UN-ECE R100 (<0.1 Ω), typical fault patterns and why clean equipotential bonding stabilizes insulation monitoring (ISO monitor/IMD)

Equipotential bonding sounds like a compulsory program, but it is a central safety and quality feature in the (ev) high voltage system: it ensures that touchable conductive parts (e.g. housings, shields, body structures) are brought to a defined reference potential. This reduces dangerous contact voltages, stabilizes EMC-relevant return paths – and creates the basis for reliable diagnostic functions in the vehicle.

Why this is so critical in practice

In an HV (ev) vehicle, ground is not just a thick conductor; it is a system of contact points, screw connections, shield supports, transitions via paint/layers and potential corrosion. Even small contact resistances can:

• falsify measurements,

• Allow error images to “wander”,

• and trigger unpleasant questions during audits (“Where is the reproducible testing and documentation?”).

Normatively, the topic is typically addressed via requirements for the low-resistance connection of touchable conductive parts (in practice often assessed with limit values in the range < 0.1 Ω in the context of UN-ECE R100 – without claiming detailed quotations here).

The often overlooked point: equipotential bonding and ISO monitors

The ISO monitor (insulation monitoring device or IMD) detects insulation faults by evaluating the insulation resistance of the HV (ev) system to the vehicle body/chassis. This is where potential equalization becomes a “quality factor”:

• Stable reference: A clean potential equalization creates a defined, low-impedance reference system. This makes measuring conditions more reproducible.

• More robust fault detection: Poor or slightly variable connections can cause the reference potential to fluctuate. This can lead to unclear symptoms: delayed detection, seemingly intermittent warnings or measured values that are difficult to interpret.

• Better fault localization: If the bonding structure is consistent, insulation faults can be localized more systematically (instead of chasing ghosts behind contact problems).

In short: The ISO monitor does not measure in a vacuum, it measures against a reference system. And this reference system stands and falls with the equipotential bonding.

Checklist: Check in 7 steps

1. Clearly define measuring points (assembly to chassis/cover).

2. Prepare contact points (coatings, paint, oxide, corrosion).

3. Select a suitable measuring method (typically: four-wire with Kelvin terminals).

4. Define measuring conditions (contact pressure, measuring current, repetitions).

5. Evaluate results (limit value + R-test for outliers).

6. Document deviations with cause logic (not just “n. i. O.”).

7. File proof in an auditable format (device, calibration status, serial numbers).

Mini table: Method → Risk → Countermeasure

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🎓 Conclusion:

Good equipotential bonding is not just safety technology, but a quality feature: it improves the validity of tests, strengthens audit capability and supports the reliable detection of insulation faults by the ISO monitor. No wonder that measuring equipotential bonding is a standard part of every high-quality (ev ) high voltage training course.

Equipotential bonding thus fulfills central safety tasks in the (ev) high voltage vehicle and is therefore so important in high voltage training courses. PS: Our recommendation: Our free(REALLY free, even WITHOUT having to provide an email address!) paper “6 things you need to know in advance about the high-voltage qualification of your employees” is available here (click).

Short FAQ (for at the end of the blog article)

1) What is equipotential bonding in (ev) high voltage systems?
A low-resistance connection of touchable conductive parts (e.g. housing, shields, body/chassis) so that they have a defined reference potential and no dangerous potential differences arise.

2) Why is the value < 0.1 Ω often mentioned?
In practice, the low-resistance bonding connection is often assessed in the context of UN-ECE R100 with limit values in the range < 0.1 Ω (the specific design depends on the system and test concept).

3) Why is a four-wire/Kelvin measurement useful?
Because it largely eliminates line and transition influences of the measuring lines. With very low resistances, the two-wire measurement quickly delivers incorrect values that are too high.

4) What are the typical causes of poor readings?
Coatings/paint, oxide/corrosion, unsuitable contacting, incorrect measuring point (e.g. “too far away” from the relevant bonding), lack of reproducibility in the setup.

5) What does equipotential bonding have to do with the ISO monitor (IMD)?
The ISO monitor evaluates the insulation status against a reference system (vehicle body/chassis). A clean equipotential bonding stabilizes this reference potential and thus improves the robustness and interpretability of the insulation monitoring.

6) What must be included in an auditable test report?
At least: defined measuring points, date, measuring device/serial number, calibration status, measuring method (e.g. Kelvin), conditions (contact preparation), result, evaluation and, if applicable, re-test/reason for deviation.

Electrical Compliance for the CTO: Why Electrical Responsibility Remains a Top Priority and How to Ensure It Meets Audit Standards

In industries with global reach, simply complying with local regulations is no longer enough. Customer requirements, audits, and supply chain compliance demand demonstrable electrical compliance; and in the event of an incident, the focus is not just on a single location, but on the organization as a whole. This is precisely where the new book “Electrical Compliance for the CTO” comes in: as a practical guide that combines electrical safety with reliability and risk management —with a focus on leadership principles.

The Book at a Glance

• Title: Electrical Compliance for the CTO
• Subtitle: A Practical Guide to Electrical Safety, Reliability, and Risk Management for the Chief Technical Officer
• Length: 176 pages (paperback)
• Publisher: MS Verlag
• Published: February 2026
• ISBN-13: 9783943247176

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Why “Electrical Compliance” Is More Than Just Electrical Safety Today

Electrical compliance is not a single measure or a folder in SharePoint. In practice, it means:

• Structures that clearly define responsibilities (even across locations)
• Processes that operate under time pressure (including those involving outside contractors)
• Control logic that is audit-ready and triggers in the event of deviations
• Documentation that makes decisions more reliable

The book articulates the core concept very clearly: As CTO, you are responsible for results— selection, organization, and oversight. Delegation can lighten your load, but it does not replace responsibility.

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The typical sticking point: Responsibilities are “somehow” delegated; unfortunately, not effectively

In many companies, the electrical organization has “evolved over time.” On paper, everything is assigned, but in reality, there are still gaps:

• Responsibilities are unclear or overlap
• The transfer of obligations is formal, but lacks genuine enforceability
• Inspections are sporadic rather than systematic
• Management of outside companies depends on individual people
• Audits are handled through special initiatives, not routine procedures

The risk: Electrical compliance “takes care of itself” until a malfunction or incident reveals that it wasn’t actually being maintained.

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What Sets This Book Apart: Electrical Compliance as a Management Responsibility

“Electrical Compliance for the CTO” describes how to establish a structured compliance framework—with a properly appointed chief responsible electrical specialist (CRES), clear responsibilities, a well-defined delegation of duties, and a monitoring system that works across all locations.

1) Effectively appoint the CRES—don’t just name it

A CRES is effective only when roles, responsibilities, escalation procedures, and resources are aligned. The book explicitly links the CRES to leadership and control mechanisms, rather than treating it as a “technical end point.”

2) Systematic Delegation of Responsibilities: Authority + Oversight

Delegating responsibilities is not an end in itself. What matters is the logic behind it:

• Who decides what?
• Who checks what, how often, and based on what criteria?
• What happens if there are discrepancies?

It is precisely this control mechanism that the book describes as an essential part of the organization, ensuring that it functions effectively even across locations, with external contractors, and under time pressure.

3) Auditability results from repeatability

“Audit-ready” means not just “well-documented,” but robustly reproducible. If your system works in day-to-day operations, the audit becomes a side effect—not a project.

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Who Will Find This Book Particularly Valuable

If you…

• be responsible for technology across all locations,
• Making decisions under risk,
• We must consider plant availability and workplace safety together,
• regularly work with audits, customer requirements, or corporate guidelines,

…then this book addresses precisely the intersection between technology, organization, and responsibility: electrical compliance as a robust management discipline.

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Practical Benefits: Three Takeaways from the Book

1) A Clear Vision for Your Electrical Department

Instead of “we’ll figure it out somehow,” you’ll get a structure that clearly maps out responsibilities, roles, and interfaces—including the role of the CRES.

2) A logic that makes incidents less likely

Those who simply “let electrical compliance run its course” are more likely to experience a malfunction or incident. Those who take the lead in it make it predictable.

3) Documentation that supports decisions

When decisions and controls are documented in a reliable manner, this not only reduces operational risks but also strengthens management’s position in critical situations.

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FAQ

What Does Electrical Compliance Mean in Industrial Facilities?

Electrical compliance encompasses the verifiable, organization-wide implementation of electrical safety requirements, roles, responsibilities, delegation of duties, controls, and documentation—particularly as they relate to audits and the supply chain.

What role does the CRES play in electrical compliance?

The CRES plays a central role when it is effectively established: with a clear description of its responsibilities, authorities, interfaces, and a system of oversight that is embedded in management.

Why isn’t delegation enough?

Delegation can lighten the load, but it does not replace responsibility. Management remains responsible for selection, organization, and oversight.

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In a Nutshell

If you don’t want to treat electrical compliance as a “side issue” but rather as an audit-ready management responsibility, “Electrical Compliance for the CTO” is the perfect place to start: concise, practical, and organization-focused.

Available from: bookstores and online retailers (ISBN 9783943247176), such as your local bookstore or Buch 7 (click).

TCS & Lotus seamlessly and unbureaucratically combine electrical training and occupational medical examinations at the highest international level.

Safety starts with people: Cooperation with the Lotus Azure Medical Service Saha Clinic

Live line work (LLW) is one of the most dangerous activities in the field of electrical engineering. Anyone who works on cables, switchgear or (ev) high voltage components while the power supply is on bears a considerable risk – for themselves, for colleagues, for the entire company. And as much as modern technology, protective equipment and work processes offer safety: In the end, it’s people who decide.

No tool or procedure can compensate for the risks if someone is physically unable to meet the high demands. An undetected heart defect, impaired reactions or reduced fine motor skills can, if things go wrong, be the deciding factor between luck and an accident. This is precisely why for certain qualifications, especially live line work, an occupational medical examination is not optional, but mandatory!

Medical expertise as the foundation of safety

Technology Consulting Solutions GmbH works with its customers to develop the highest industry standards in electrical safety, not only in Germany but also internationally. Thanks to a great cooperation partner, we can now also offer this for the aforementioned medical examinations! Through our SouthEastAisa Coordination Office in Bangkok, we have gained a reliable and fair partner: For our in-house training courses in Thailand and Southeast Asia, we cooperate with The Lotus Azure Medical Service Saha Clinic in Bangkok.

The clinic, located in the Surin Building in the Khlong San district, has all the facilities, staff and expertise for all relevant occupational health examinations – and is even mobile! This means that we can now offer our customers and partners in Thailand everything they need to reliably examine the health requirements for high-risk activities and certify them both professionally and legally. Together with occupational physicians in Germany and Thailand, we have established a procedure that ensures that the health requirements are met: Anyone who takes part in our live line work courses and undergoes the occupational health examination at The Lotus Azure Medical Service meets the occupational health requirements to an international standard.

Why this examination is indispensable

It would be dramatic if a participant with undetected heart problems or sensory impairments were to be exposed to a task that requires maximum concentration, speed of reaction and resilience. At such moments, all it takes is a minimal lapse – and there is not only the threat of an accident, but a catastrophe.

With the cooperation between TCS and Lotus, we are creating a clear safety anchor here:

• Specialized examinations by experienced occupational physicians
• Binding standards analogous to German and international specifications
• Seamless integration into our training programs in Thailand and the region

A strong signal to our customers

Our cooperation shows that electrical safety does not end at the training door. It starts with people – and their suitability for the most demanding tasks. By combining technical know-how with medical expertise, we are setting new standards for quality and responsibility in Southeast Asia. That’s why we at Technology Consulting Solutions GmbH have teamed up with The Lotus Azure Medical Service negotiated an extensive service:

When the prophet does not come to the mountain, the mountain comes to the prophet – or: how to efficiently integrate your employee resources into qualification and investigation.

We at TCS have always traveled directly to the customer for all training courses. It is much more efficient to send one trainer to the customer instead of many participants to the training! Our common thought from TCS & Lotus: Why shouldn’t this also apply to occupational health examinations?

The current price for the survey (B2B invoice for 2026) is THB 3,000 per person.

If several people need to be examined at one appointment, the Lotus occupational physicians will come to the customer in a fully equipped bus, including ECG, within the Bangkok area by appointment! Within the city limits of Bangkok at a surcharge of THB 5,000, up to 20 km radius for THB 10,000, 50 km radius THB 15,000 and up to 100 km for THB 20,000 – so it may be worth making an appointment on site or in-house.

Not only the occupational health examination for live line work

In addition to the occupational health examination required for live line work, more is also offered.

Specific occupational health examination

General health check-up

Occupational medical examination due to electrical hazards at work

Occupational medical examination due to chemical hazards at work

Required health certificate for visa purposes

Health tests required for work permits

Are you missing an important topic? Simply ask – with advice on electrical topics via the TCS – or for all topics directly to The Lotus Azure Medical Service! Call or write to us, we look forward to working with you and for you!

Why the CRES’s position as guarantor is crucial in order to effectively exclude organizational negligence in the electrical engineering sector.

Entrepreneurs, board members, managing directors and operations managers must organize their business in such a way that all work processes run safely. For the chief responsible electrical specialist (CRES), this means acting as a guarantor. CRES position of guarantor Organizational negligence are directly related: Organizational gaps can lead to personal liability.

A breach of duty in the organization constitutes organizational fault. The decisive factor is that the organizational structure is verifiable by suitable means and can be controlled in good time. As a rule, the management body, such as the plant management, is responsible. If there is a chief responsible electrical specialist, they have their own guarantor position in their area of responsibility due to the guarantor duty they have assumed and are therefore also liable under criminal law.

Types of organizational fault

Organizational negligence is divided into four successive areas:

• Selection-related organizational negligence: Were suitable employees selected for a task, such as an electrotechnically instructed person or electrical specialist?
• Instruction-related organizational fault: Have these employees been adequately instructed and instructed by work instructions and safety instructions?
• Supervision-related organizational fault: Is the activity supervised in a suitable manner, for example by the management and supervision of an electrical specialist when work is carried out by an electrotechnically instructed person?
• Implementation-related organizational fault: Does an employee act negligently despite selection, instruction and supervision because the organization is still inadequate?

The interpretation of when an organizational fault exists may depend on national case law. Even if no formal legal problems arise, it is rarely a good sign for companies with several production sites if they publicly claim to have complied with all applicable regional regulations.

Extrinsic and intrinsic responsibility

In addition to legal requirements, there is also extrinsic motivation from laws and contractual requirements. At the same time, those responsible for electrical safety are required to ensure a high level of safety for all employees. This strengthens the quality and stability of work processes.

Guarantor position of the CRES in the corporate context

In order to fulfill the obligations in the area of electrical safety, the development and maintenance of a professional structure is the central task of the chief responsible electrical specialist. The position of guarantor applies exclusively to the designated persons – such as the employer, managing director or chief responsible electrical specialist – and not to the organization as such. CRES Guarantor position Organizational fault makes it clear that inadequate structures can quickly lead to personal liability.

Practical starting points for avoiding organizational fault

There are starting points for CRES and company management to avoid organizational negligence:

• Record work and duties: Draw up a checklist of all duties and work to be done, get support from specialist departments and assign everything clearly to people and functions. A visualized organizational chart makes it easier to get an overview.
• Specify responsibilities: Define system and, if necessary, work managers among the electrical specialists, ensure that expertise and decision-making authority match and regularly check that the assignments are complete.
• Ensure qualification and exchange: Ensure good qualifications, their maintenance and further training opportunities. Establish a structure in which electrical specialists can exchange information regularly and as informally as possible and provide feedback from practical experience.
• Control hazards and access: Develop and evaluate all hazardous areas as part of a risk assessment. Restrict access in stages, define access regulations, document special danger areas, avoid working alone on electrical systems wherever possible and create clear safety principles and rules of conduct.
• Manage inspections, instruction and work equipment: Ensure standard-compliant inspections of equipment and systems as well as complete and regular employee instruction. Set up an instruction and work equipment management system that signals the need for action at an early stage and also includes work clothing and personal protective equipment.
• Strengthen your own role: Invest in your own further training, find out about innovations, exchange ideas with other chief responsible electrical specialists and attend seminars or congresses. Pass on this knowledge and get support wherever you need it.

Anyone who consistently pursues these starting points will turn CRES guarantor position organizational fault not into a liability case, but into a configurable framework: Electrical safety becomes an integral part of the company organization, which visibly increases safety and reliability.

Conclusion

The CRES’s position as guarantor is a key factor in ruling out organizational negligence in the electrical engineering sector. It requires structures to be clearly defined, responsibilities to be clearly defined and the safety of all work processes to be actively managed. If selection, instruction, monitoring and implementation are stringently organized, a reliable basis is created that reduces liability risks and strengthens operational stability. In this way, electrical safety becomes an integral part of a functioning company organization. TCS also offers the two-day Chief Responsible Electrical Specialist course for new CRESs as well as the option of external CRES and CRES consulting on an interim basis.

PS: Our recommendation: My book “Aufbau und Erhalt einer Elektrosicherheitsstruktur” is available as a regular paperback and as an ebook from specialist retailers, and as an audiobook from Audible and Spotify with a subscription.

FAQ on the CRES’s position as guarantor and organizational fault

What does the CRES’s position as guarantor mean?
The guarantor position describes the obligation assumed by the CRES to ensure a safe electrotechnical organization in their own area of responsibility. This responsibility applies to the designated person themselves and leads to direct personal liability.

When does organizational fault exist?
Organizational negligence arises if the company management or CRES violates its duty to structure processes safely. The decisive factor is whether selection, instruction, monitoring and implementation were appropriately organized and demonstrably controlled.

What types of organizational fault are there?
There are four forms: selection-related, instruction-related, monitoring-related and execution-related organizational negligence. They build on each other logically and each relate to different levels of operational responsibility.

Why is the CRES particularly relevant to liability?
The CRES has its own guarantor position in its specialist area. This means that organizational failures – regardless of the general corporate structure – can lead directly to their personal criminal liability.

How can CRES and company management avoid organizational fault?
Through clear responsibilities, complete assignments in the organization chart, qualified employees, regulated access structures, standard-compliant inspections, regular instructions and a functioning work equipment management system. Continuous exchange and further training support the effectiveness of these measures.

What role does documentation play?
Documentation not only serves as proof, but also as a control instrument. Incomplete, outdated or purely formal documentation does not help. The decisive factor is a structure that makes the need for action visible at an early stage.

Why is working alone on electrical systems critical?
Working alone increases the risk of serious consequences in the event of incorrect actions or accidents. A suitable organization ensures that hazardous areas are not entered alone and that a second person always ensures safety.

What significance does feedback from the field have?
Employees who work close to the ground recognize safety-relevant developments at an early stage. Well-structured feedback processes ensure that this information reaches the CRES reliably and is incorporated into the organization.

How traction batteries convince after the car in stationary and mobile applications – and what engineers and decision-makers need to pay attention to.

Why Second Life makes technical sense

Traction batteries are the most valuable and complex part of electric drives – and they age. At the end of automotive use, their condition determines the next step: reuse in the vehicle, reassignment to less demanding applications (“second life”) or dismantling/recycling. This path decision is not a gut feeling, but follows measurable parameters such as capacity, internal resistance and freedom from defects.

The rededication to stationary or semi-stationary storage (e.g. PV intermediate storage, construction site or emergency lighting supply) as well as mobile uses with moderate dynamics (e.g. industrial trucks) is particularly attractive. These categories – stationary, semi-stationary, mobile – structure the requirements and help with the selection of suitable batteries.

From the cell to the system: what really counts

Technically speaking, a battery is more than the sum of its cells. For safe operation, cell voltage, temperature and battery current must be continuously monitored; typical Li-ion cells operate around 3.6 V nominal voltage, with limit values that can lead to degradation and even safety risks if exceeded or undercut. A modern system includes modules with cell monitoring and balancing (CSC/ASIC), a control unit for SOC/SOH calculation and power management, (ev) high voltage contactors and current measurement – often redundant.

Why is this so important? Because the subsequent second-life load profiles (e.g. many flat cycles in grid operation vs. several hours of cycling in home storage) directly determine life expectancy, efficiency and safety – and therefore whether a used traction battery is suitable for the target profile at all.

Measuring instead of guessing: Determine SOC, DOD, SOH accurately

Solid condition diagnostics are the ticket to any reuse project. The state of charge SOC is the ratio of the currently charged Ah to the available capacity; the depth of discharge DOD is calculated as 100 % SOC. The state of health SOH is defined as the ratio of the current full capacity to the nominal capacity; below a typical threshold value of around 80 %, this is referred to as the end of the original service life (depending on the application).

From an engineering perspective, this means that no second-life release is possible without reliable SOH, SOC and internal resistance diagnostics – ideally with reproducible test procedures that map the target profile (currents, temperatures, cycle windows).

Understanding ageing – planning second life realistically

Ageing is not linear. It is influenced by temperature, current rates and cycle windows; the capacity curve typically flattens out slightly at first before falling more sharply. In second-life scenarios, application ranges above ~50-80 % residual capacity are often used (depending on the specific application) in order to have sufficient reserve for degradation in second use.

Pragmatic examples show that this works: From PV home storage systems to grid-supporting large-scale storage systems and semi-stationary solutions, there are real pilot and practical projects that successfully operate second-life batteries.

EOL-IS as a process concept: from expansion to commissioning

Reuse is a process, not a single step. An end-to-end process – from removal, diagnostics, disassembly/reassembly to integration, testing and commissioning – minimizes risks and costs. The systematic approach behind this: orderly evaluation, data-based assignment to the appropriate application and documented commissioning in the target system.

Engineer takeaway: Define the target use case first (e.g. PV shift vs. grid support). Then set limits for SOH, internal resistance, temperature window, C-rate and approved DOD. Only when the battery has passed these criteria will the conversion be economically viable – and remain safe.

Requirement profiles: stationary, semi-stationary, mobile – short & crisp

• Stationary (e.g. home storage, grid support): more even loads, focus on cycle stability, efficiency and calendar stability.
• Semi-stationary (e.g. construction site lighting): as stationary, but with relocation/transport capability – mechanical robustness and fast recommissioning are important.
• Mobile (e.g. industrial trucks/e-scooters): more dynamic power requirements, significantly higher peak currents – check internal resistance and thermal management particularly strictly.

Suitable batteries are selected on the basis of clear sets of parameters (including capacity, internal resistance, temperature and current range, permissible cycle depth, self-discharge).

Safety first: standards, architecture, operation

Safety comes from chemistry, architecture and operation: robust cell chemistry and system packaging, reliable BMS functions (monitoring, balancing, limit value/fault handling), defined shutdown paths (contactor/fuse), convincing thermal management – and operation that avoids temperature stratification, excessive C rates or unfavorable SoC media.

For stationary/industrial applications, IEC 62619 is the central safety standard at cell/battery level; it defines requirements and tests for the safe operation of secondary Li-cells in industrial and stationary applications. In Germany, VDE-AR-E 2510-50 addresses the safety of complete stationary Li-ion storage systems (BESS) – including requirements for design, protection concepts and operation. For transport and logistics, the UN 38.3 regulations apply, including the test summary obligation – relevant at the latest when shipping removed or repurposed batteries.

Note on qualification & voltages: Handling systems below 60 V (low/low volt) differs significantly in terms of obligations and hazards from low voltage/high voltage (typically ≥ 60 V DC). Qualification requirements differ accordingly according to German regulations; in the automotive environment, for example, DGUV Information 209-093 is established, and VDE/IEC regulations are also used in projects. These aspects belong in the operating and commissioning concepts, but are only mentioned here for the sake of completeness.

Data & transparency: where the journey is heading

The EU Battery Regulation (EU) 2023/1542 enshrines sustainability and transparency obligations over the entire life cycle. The battery passport – mandatory from February 1, 2027 for EV and industrial batteries 2 kWh, as a digital data record (QR-linked) on origin, composition, performance and use – is particularly important for second-life projects. This makes condition assessment and integration into new applications much easier.

Engineering consequence: Anyone planning second life today should design data models and interfaces in such a way that future battery fit information (cycles, temperature history, repairs, measurement data) can flow seamlessly into the suitability test and the BMS of the target system.

Mini guide for the technical suitability test

1. Define use case: Stationary (PV shift/control power), semi-stationary (temporary supply), mobile (drive/forklift truck). Document load profile.
2. Record status: SOH (≥ threshold), SOC window, internal resistance, temperature behavior, fault memory.
3. Define system limits: DOD, C-rates, temperature window, permissible imbalance, contactor/fuse design.
4. Check safety concept: Conformity with standards (IEC 62619 at battery level; VDE-AR-E 2510-50 at system level if applicable), protection paths, fault reactions.
5. Integration & test: BMS connection (SOC/SOH models), balancing strategy, thermal verification in the target profile, acceptance test incl. documentation (also with regard to UN 38.3 transport).

Practical examples – what is important in each case

• PV home storage (stationary): relatively uniform energy consumption with weather-related variations → cycle stability, high round-trip efficiency, robust thermal performance.
• Grid support/peak shaving (stationary): many short load peaks, high demand for low-loss energy transmission and fast controllability.
• Construction site lighting (semi-stationary): repeated assembly/dismantling, changing environment → mechanical robustness, simple commissioning, tolerant thermal conditions.

Conclusion: Second Life can bring a lot, but should be run carefully and purposefully

Second life is technically worthwhile if the data, design and discipline are right. Those who accurately determine the state variables (SOC/DOD/SOH), honestly simulate the target profile and consistently implement standards and safety concepts will obtain economical storage systems with calculable risk – whether in home storage, grid support or semi-stationary applications. The good news is that practical experience and pilot projects are demonstrating feasibility; the next evolutionary stage – battery passport – will further accelerate second life because it will bring transparency and suitability tests that can be automated.

Briefly summarized for electrical engineers and foremen:

• Technology: BMS monitoring, clear limit values, application-oriented system design.
• Safety: Keep an eye on IEC 62619/UN 38.3/VDE-AR-E 2510-50; plan protective paths.
• Qualification: Below 60 V ≠ (ev) high voltage – different hazards, procedures and qualification requirements (e.g. in accordance with DGUV-I 209-093, VDE/IEC).
• Future: Digital data depth (battery pass) makes second life more predictable – use it!

Anyone who works with (ev) high voltage systems bears responsibility for the safety of people, the environment and operations. Solid training – such as battery diagnostics and the specialist high voltage ( ev ) at TCS – is the first step.

PS: Our recommendation: Our free(REALLY free, even WITHOUT having to provide an email address!) paper “6 things you need to know in advance about the high-voltage qualification of your employees” is available here (click).

Law, technology and safety combined – what the Seveso and accident regulations mean for modern battery technology.

Seveso (EU) and the Hazardous Incident Ordinance (DE) are not “chemistry-only” issues. They apply wherever hazardous substances are present in relevant quantities – i.e. also in battery production (electrolyte, solvents), in test laboratories, in stationary BESS and in recycling. For electrical engineers, the clever dovetailing of system design, electrical protection concept, substance management and safety organization is decisive for approvability, availability and fire protection – and thus for economic efficiency.

1) What it’s all about – and why it directly affects electrical engineering

The European Seveso Directives regulate the prevention of major accidents involving hazardous substances and the limitation of their effects. In Germany, they are implemented via the 12th BImSchV (Major Accidents Ordinance). Seveso II (96/82/EC) replaced Seveso I; today Seveso III (2012/18/EU) applies, which replaced Seveso II and, among other things, adapted it to the CLP classification. This means that it is not facility types that count, but operating areas in which hazardous substances reach the quantity thresholds according to the Annex; then graduated obligations from the basic obligation to the safety report, alarm/hazard prevention planning and official on-site inspections apply.

Electrotechnical reference: In battery production, large quantities of flammable solvents (e.g. NMP substitutes in cathode/anode coating, washing/cleaning media) and electrolytic liquids are produced; in stationary storage systems (BESS), energy-rich modules are concentrated in housings/rooms; in recycling, hazardous reaction gases can be produced during thermal/chemical decomposition. Whether your site falls within the Seveso scope is determined by the accumulation of hazardous substances in the operating area – regardless of whether the focus is mechanical, electrical or chemical.

2) Duties translated for battery projects

Corporate policy & safety management

Seveso requires an integrated safety concept and a “state of the art” safety organization – with clear responsibilities, maintenance processes, change management (MOC), training and consistent accident/near-accident evaluation. For electrical engineering managers, this means that safety functions (BMS limit values, insulation monitoring, shutdowns, ATEX protective measures, fire protection) must be anchored in the organization and effectively demonstrated.

Safety reports & distances

If the thresholds are exceeded, safety reports, alarm/hazard prevention plans and, if necessary, spatial distances to areas worthy of protection must be submitted. For BESS, for example, this means Fire scenarios, thermal runaway events (propagation), smoke/HF release as well as extinguishing and smoke extraction concepts must be plausibly calculated and interlinked with the electrical design (zoning, current limitation, shutdown logic).

Role of the incident officer

The incident officer advises the operator, monitors compliance with the specifications, reports defects immediately and reports annually – expertise and reliability are regulated. In electrical engineering companies, his active interface with electrical planning, maintenance and operation is crucial.

3) Battery production: from “chemical” risk to electrotechnical implementation

Coating & drying: Solvent-based slurries and electrolyte handling require explosion protection and fire protection concepts. For electrical engineering, this means ATEX-compliant equipment in relevant zones, safe shutdowns, functional safety (SIL/PL) for ventilation, extraction, oven/dryer and interlocked energy supplies. Seveso obligations require proof that technical and organizational measures are suitable for preventing or limiting incidents.

Forming & testing: Exothermic risks arise during initial charging; electrical systems must provide robust current/voltage limits, monitor cells and disconnect them safely in the event of a deviation. The BMS function is relevant to safety here: Limit values, balancing, fault management and emergency shutdown are documented and taken into account in exercises/alarm plans. (For technical standard environments, see chapter 6.)

Power supply & earthing: High short-circuit power in test benches/strings requires selectivity, arc-proof switchgear, equipotential bonding and insulation monitoring. Seveso also requires quality-assured maintenance – inspection plans, test levels, approvals – and the documentation of changes.

4) Stationary BESS: Seveso meets system and electrical safety standards

There are special safety standards for grid-integrated storage systems that combine with Seveso obligations to form a consistent overall concept:

• IEC 62933-5-2 (Safety for grid-integrated electrochemical ESS): System approach for personal and environmental protection – including electrical, mechanical and fire protection design.
• VDE-AR-E 2510-50: German application rule for stationary Li-BESS – Requirements for installation, operation and testing (widely referenced in projects).
• NFPA 855: Installation standard for ESS (USA), increasingly cited as best practice – chapters on Li-Ion, clearances, room layout, detection, fire compartments.

Classification: Seveso evaluates hazardous substance quantities and requires the management of major accidents. The standards mentioned define technical details (e.g. distances, spatial criteria, tests such as UL 9540A in the US environment). In practice, both levels are combined: Scenario and substance balance according to Seveso → technical implementation with IEC/VDE/NFPA.

5) Battery recycling: different process routes, same principle

Flammable/reactive gases, acids/alkalis and fine dusts are produced during mechanical, thermal or hydrometallurgical digestion. This increases explosion and fire hazards as well as toxic risks. Seveso requires the same logic for this: check quantity thresholds, define the operating area, draw up alarm/hazard prevention plans, schedule safety reports and on-site inspections. Important in terms of electrical engineering: Dust EX protection, ignition source-free drives, electrical infrastructure with safe disconnection and earthing.

6) Qualification & voltage levels – when it’s more than just cell production

In practice, there are different protection and qualification requirements depending on the voltage level: different rules apply below 60 V DC (extra-low voltage/low-voltage) than in high-voltage systems. For vehicles and related HV (ev) environments, DGUV Information 209-093 describes the qualification and minimum content – from safe operating modes to working in a de-energized state. This logic is applied analogously in many companies for stationary systems and test stations (legally, the specific application is always decisive). So when it comes to entire HV (ev) battery systems instead of just low-voltage modules or individual cells, this also becomes relevant.

7) What authorities expect today – “integrated security” in concrete terms

State-of-the-art safety technology means: continuous adaptation to regulations, approval requirements, official monitoring, open flow of information, training and organization in the event of changes. This is precisely where electrical engineering has many levers: from release logic (hot work, switching measures) to functional safety (SIL/PL) and e-maintenance & test cycles. Near misses are systematically evaluated; safety management assigns clear responsibilities – the incident officer provides technical support and reports.

8) Difference to the automotive world – same cells, different boundary conditions

Even if cell chemistries (LFP, NMC etc.) are similar, the Seveso setting differs: In automotive traction, mass/volume and crash safety are the main focus; in production/recycling/BESS sites, substance quantities and room concepts (storage, process rooms) dominate. This results in other protection goals: e.g. greater distances, fire compartments, smoke extraction, emergency ventilation, fault current limitation and energy/gas-carrying barriers, which must be verified in the safety report.

9) Looking ahead – secure systems through technology and management

Trend 1: Standardization fine-tuning. International/European standards (IEC 62933-5-2, EN IEC 62619, VDE-AR-E 2510-50) are being updated and sharpen requirements for safety functions, tests, clearances and fire management. NFPA 855 acts as an international reference for layout/fire protection.

Trend 2: Chemistry & architecture. Higher proportion of LFP in stationary applications reduces thermal escalation risks; segmentation, rack fire load limitation and propagation tests (e.g. 9540A-based methods in the US environment) improve structural and electrical protection.

Trend 3: Systemic resilience. Authorities are placing greater emphasis on on-site inspections and publicly accessible information on risks/emergency planning; operators are professionalizing incident/alarm drills and dovetailing BMS telemetry with building and hazard management.

Conclusion: Thinking Seveso means thinking “electrical safety system”

The following applies to battery production, stationary ESS and recycling: Seveso/incident law addresses the major risks – and electrical engineering provides central protective functions. Those who check early on in the project whether and how quantity thresholds are reached and closely interlink safety management with electrical protection and control functions will master approval, operational safety and availability. In practical terms, this means

• Material balance & scenarios (electrolyte, solvents, reaction gases) → Clarify operating range and obligations.
• Technology & organization as a unit: BMS limits, shutdown, ATEX protection, fire protection, MOC, exercises.
• Use standards: IEC 62933-5-2, VDE-AR-E 2510-50, (where appropriate) NFPA 855 for system/layout safety.
• Note qualification: Distinguish between below/above 60 HV (ev) DC; for vehicle HV, DGUV 209-093 is the standard – the logic is transferable to related environments.

This turns a “chemical regulation” into an electrotechnical management tool: for safe, permit-proof and economical battery locations – from the cell to the megawatt storage system. Anyone who works in the field of (ev) high voltage systems bears responsibility for the safety of people, the environment and operations. Solid training – for example on battery diagnostics and the specialist high voltage ( ev ) at TCS – is the first step.

PS: Our recommendation: Our free(REALLY free, even WITHOUT having to provide an email address!) paper “6 things you need to know in advance about the high-voltage qualification of your employees” is available here (click).