Our Completed Projects

Below, you will find a selection of custom-made transformers that we have specifically manufactured for our clients. Do you require a transformer with non-standard voltages, or are you looking for a specific enclosure with an integrated circuit breaker?

Contact detransformatorspecialist.nl today to discuss your requirements and discover how our client-specific solutions can make the difference for your project.

High-End Customization: 3-Phase Transformer for Aqua Demolition Services

Commissioned by Aqua Demolition Services B.V., detransformatorspecialist.nl has delivered an advanced, custom-engineered 3-phase transformer. 

This technical solution was manufactured by Automatic Electric Europe B.V. (AEE). 

The configuration is specifically tailored to the rigorous demands that the high-pressure water demolition sector imposes on industrial installations.

Industrial Precision and Tailored Engineering

Reliable supply voltage forms the foundation for operational continuity in complex water demolition projects. 

The delivered transformer serves as the vital link between the electrical grid and specialized equipment. T

hrough close collaboration with AEE, the installation fully meets the specific impedance requirements and thermal loads encountered during intensive use. 

Custom engineering ensures stable operation under fluctuating conditions.

Technical Specifications and Operational Advantages

Selecting a transformer from Automatic Electric Europe B.V. results in a robust construction with remarkably high efficiency. Performance is paramount. Key technical aspects of this delivery include:

• Galvanic Isolation: By maintaining physical separation between the primary and secondary circuits, connected electronics are optimally protected against grid noise and voltage spikes.

• Thermal Management: Minimized energy loss leads to reduced heat generation, significantly extending the service life of internal components.

• IP54 Classification: The unit is housed in a rugged IP54 enclosure. This level of protection against dust and splashing water is essential at challenging demolition and renovation sites where environmental factors are often extreme.

Custom transformers: Design and manufacture for specialized projects

Custom transformers: Design and manufacture for specialized In today's technological industry, precision, technical reliability, and strict safety standards are paramount.

Consequently, an off-the-shelf standard product often no longer suffices.

Complex industrial processes and unique voltage requirements demand highly accurate custom transformers.

This also applies to confined installation spaces in mechanical engineering or shipbuilding. At detransformatorspecialist.nl, we understand that the continuity of your business operations depends on robust electrical components.

Therefore, we design and produce customer-specific transformers for a wide range of sectors.

Examples include mechanical engineering, the maritime sector, medical technology, and industrial automation.

On this comprehensive page, you will discover why custom work makes the ultimate difference in performance and lifespan.

You will read how our engineering process works in practice. Additionally, we provide expert answers to all your frequently asked questions regarding the integration of a custom transformer into your next project.

Why and when do you choose a custom transformer?

The choice for a custom-made transformer usually stems from specific technical challenges where standard components fall short.

A transformer is the beating heart of your electrical installation.

A slight deviation in voltage or inefficient heat dissipation can already lead to malfunctions, production loss, or even unsafe situations. Standard products are designed for general use.

However, they often do not meet the requirements of specialized niches.

Voltage and Power: Every application imposes unique demands, from advanced robotics to heavy pumping stations.

Where one requires galvanic isolation without voltage change, another needs a complex step-up or step-down configuration of non-standard mains voltages.

Physical integration: Adjustments in terms of form factor are part of our standard capabilities when designing custom transformers.

This also includes specific cooling requirements, such as forced air cooling or cast resin for maritime applications, vibration resistance, and EMC shielding.

Foreign equipment: For machines imported from Asia or the United States, a transformer with a non-standard voltage is necessary.

Only then can the machine operate safely and efficiently on the European 400V or 230V grid.

Standards and Regulations: A custom transformer is always designed so that you immediately comply with strict applicable standards, including NEN-EN-IEC 61558, UL certification or design style for the North American market, or CE marking.

Buying a 3-phase transformer: Specific wiring diagrams and configurations

When you look to buy a 3-phase transformer for heavy industrial applications, you quickly run into the limitations of standard catalog models.

When developing 3-phase networks, buying the correct 3-phase transformer wiring diagram is crucial for machine stability and balanced current load distribution.

We offer specific solutions.

These range from a few kVA to power ratings exceeding 630 kVA.

Frequently requested configurations are the 3-phase transformer Dyn5 and the 3-phase transformer Yyn0.

A Dyn5 configuration, with a delta primary and star secondary, is ideal when your machine requires a neutral wire while your incoming power grid does not provide one.

The phase shift amounts to 150 degrees.

The ability to handle an asymmetrical load makes this a very robust choice for machine builders.

A Yyn0 configuration involves a star-star connection without phase shift.

In contrast, this is often applied when the neutral wire must remain connected primary and secondary.

By engineering such complex network requirements in-house, we prevent issues with harmonic currents and unbalance in your network.

Maritime security: Custom shore power isolation transformer for a boat

Within water sports and commercial shipping, electrolysis—or galvanic corrosion—is an invisible but highly destructive enemy. When a vessel is connected to the shore earth via shore power, a galvanic cell is created.

This occurs in combination with the water acting as an electrolyte and other steel sheet piling or vessels.

This process eats away your zinc anodes at an incredible speed.

After that, it proceeds to attack expensive bronze propellers, aluminum saildrives, or the steel ship hull.

In practice, damage costs from such corrosion easily escalate from €2,500 to over €15,000 for complex repairs to the underwater hull.

The solution to this is a specially designed custom shore power isolation transformer for a boat.

By completely isolating the primary shore side and the secondary ship side galvanically in accordance with NEN-EN-IEC 61558-2-4, the ground loop is broken.

Galvanic corrosion via the shore power cable is thus physically impossible.

The benefits of a boat isolation transformer are therefore enormous.

You benefit from maximum safety, zero stray currents, and the preservation of your vessel.

For international yacht builders, we also regularly design a shore power isolation transformer custom boat.

Here, we can also safely integrate voltages of 110V/60Hz and 230V/50Hz safely into a single robust, moisture-resistant IP54 enclosure or in a cast resin configuration to prevent corrosion in the engine room.

Limited installation space: Having a compact custom toroidal transformer wound

For specific applications where space is scarce and magnetic stray fields must be restricted to an absolute minimum, we advise having a compact custom toroidal transformer wound.

This is, for example, crucial in high-end audio equipment or sensitive medical instruments.

Unlike traditional block transformers with an EI core, a toroidal transformer consists of a continuous, seamless magnetic core made of silicon steel. As a result, the efficiency is significantly higher.

Figures indicate that a well-designed toroidal core can achieve an efficiency of up to 98%.

In contrast, a comparable block transformer often achieves only 85% to 92%.

With us, you can have a toroidal transformer custom-made to fit exactly within your enclosure.

We can adjust the diameter-to-height ratio without compromising the electrical specifications.

In addition, the construction ensures that virtually no mechanical hum occurs.

This is essential for testing environments and clinical rooms.

Whether you are looking for a small power supply for a printed circuit board (PCB) or a robust toroidal isolation transformer for a boat with a built-in soft-start module; we engineer it from start to finish.

Legacy systems: Having an old transformer exactly replicated (Reverse Engineering)

In heavy industry or infrastructure projects, we often encounter control cabinets or production machines that still function perfectly.

Sometimes, however, there is one defective component: the power supply. If the original manufacturer is bankrupt or the machine is decades old, replacement parts are no longer available.

In such cases, having an old transformer exactly replicated is the most cost-effective and sustainable option.

Our partners specialize in reverse engineering. 

They analyze the burned or defective coils and measure the core. Subsequently, they calculate the original winding specifications.

They then create a new custom transformer that is functionally 100% identical. 

Due to the use of modern insulation materials, it is often even safer and more efficient than the original.

This saves you tens of thousands of euros because you do not have to write off the machine.

Why choose detransformatorspecialist.nl as your supplier of custom transformers in the Netherlands and Belgium?

If you are looking for a supplier of custom transformers, you have a choice of various suppliers in the Netherlands and Belgium.

Large and renowned competitors such as EREA and Riedel often focus on standardized processes and volume production.

The customer sometimes experiences the disadvantages of this approach. This can manifest itself in inflexible engineers, long communication lines, and sky-high minimum order quantities (MOQs).

detransformatorspecialist.nl deliberately distinguishes itself through agility, customer focus, and direct technical support.

With us, you always speak with an electrical engineer who speaks your language.

They actively collaborate with you to solve your challenge.

You can have a transformer made with us starting from just 1 piece up to series production.

Therefore, no volume obligation applies.

Additionally, we offer more flexibility in terms of customer-specific connections, integrated fuses, and special IP20/IP23/IP54 enclosures.

Our lead time for prototyping is unprecedentedly fast and usually ranges from a few days to 4 weeks for larger projects. This ensures your project does not grind to a halt easily.

In short: we are the flexible partner for customer-specific transformers that actually thinks along with your engineering department.

Frequently asked questions about designing specialized transformers

• Where to have transformers designed for specialized projects?

For high-quality electrical design for specialized projects, detransformatorspecialist.nl is the right place.

We guide you from the first sketch through to delivery. Through a detailed intake interview, we map out your specific parameters. Subsequently, we provide a custom design that seamlessly aligns with your B2B application.

• Need a transformer with a non-standard voltage for a machine?

Absolutely.

Daily, we handle machines imported from the US or Asia that require specific voltages, such as 200V, 440V, or 480V.

We design and deliver the transformer with exactly the desired primary and secondary voltages.

This includes the correct taps to compensate for small voltage variations in your local grid.

• I am looking for a 3-phase transformer with specific connections.

Whether you require a Dyn5, Yyn0, or Ynd11 configuration, we engineer this for you.

We can execute the connections using terminal strips, bolt connections, or specific connectors.

This is done precisely as your switch cabinet or control panel requires.

• Where can I have a custom transformer made?

You can have your transformer fully customized to your requirements at detransformatorspecialist.nl.

No matter where you are located, we manufacture everything custom-specific.

This ranges from power supplies on DIN-rail to robust enclosures for the petrochemical industry.

• Can I have an old transformer exactly replicated?

Yes, due to the expertise of our partners in reverse engineering, we can achieve this.

Virtually any obsolete or unidentifiable transformer can be exactly replicated or modernized by us. This saves you enormous costs in replacing complete machine lines.

• Custom shore power isolation transformer for a boat?

We produce and deliver robust isolation transformers specifically for the maritime market. With these, you are guaranteed to prevent galvanic corrosion.

We fully tune the power capacity, the inrush current limitation (soft-start), and the waterproof enclosure to your yacht or workboat.

• Having a compact toroidal transformer wound for a small enclosure?

Certainly.

For environments with tight physical spaces, we calculate and wind compact toroidal transformers.

These offer high efficiency, minimal heat generation, and very low magnetic radiation.

Practical examples: Customer-specific transformer solutions we recently realized

To provide a clear picture of our capabilities, we gladly share some recent cases in which you immediately recognize the added value of our custom approach:

Maritime: Shore power isolation transformer.

A shipyard in the Netherlands sought a solution for an aluminum superyacht.

Standard transformers simply did not fit due to the sloping walls of the vessel.

We developed a compact, cast-resin insulated shore power isolation transformer. This completely eliminated galvanic corrosion and fitted perfectly into the recesses of the ship.

Mechanical Engineering: Industrial 3-phase transformer (Dyn5).

For a large demolition company, Aqua Demolition Services B.V., we designed an extremely robust transformer with an IP54 enclosure.

The transformer effortlessly handles the inrush peaks of heavy water pumps.

Consequently, the network is not heavily loaded.

Automation: Having a custom power supply transformer made.

We executed this project for a developer of control cabinets.

We wound a series of multiple control transformers with various secondary taps of 12V, 24V, and 48V.

These are mounted on DIN-rails to drastically reduce the total installation time of the cabinets.

Quality, standards, and our transparent development process

When you decide to purchase a custom transformer through us, you want a guarantee of safety and continuity.

We work exclusively with manufacturers from Europe who produce strictly in accordance with the NEN-EN-IEC 61558 standard series, specifically part 2-4 for isolation transformers or 2-6 for safety transformers.

Our advisory process is transparent.

You contact us via email, telephone, WhatsApp, or Signal, after which you are usually in discussion with an engineer within 24 hours.

We discuss the electrical diagram, the environmental variables (temperature, moisture), and certification requirements.

Subsequently, you receive a clear quotation from us.

Upon approval, we ensure that the special transformers are produced by our trusted partners.

We often deliver small series or prototypes within a few days to 4 weeks.

Urgent delivery is also possible; in that case, the transformer is delivered within 1 to 2 days.

Quotation or direct advice for your custom transformers?

Are you looking for a party that looks beyond a standard part number?

At detransformatorspecialist.nl, we find a suitable electrical solution for every challenge.

Whether you are looking for a single transformer for reverse engineering, or wish to purchase a specific series weekly for your production line; we are at your service.

We invite engineers and procurement managers to challenge us directly with their complexity.

With our commitment, you choose absolute reliability and proven expertise.

You receive a product that maximizes the lifespan of your installations.

Visit our contact page to request a free quotation.