Split-core transformer 333mV for energy saving

 

High energy costs, decentralised generation and energy agreements make energy saving a priority. ELEQ offers a variety of measurement solutions.

Changes are accelerating. Where you used to be able to look years ahead, it is now often difficult to plan a year ahead. The ever-increasing demand for energy, problems with the transport network, decentralized generation and the increasing demand for electric transport mean that the network design and (peak) consumption must be adjusted in the short term. In addition, the grid is more polluted by decentralized generation and today’s equipment is more sensitive to this pollution, which can cause disruptions.

Smart automation

Smart energy monitoring offers the solution to optimize energy consumption. Think, for example, of making it possible to read and control energy consumption locally and remotely. To achieve this, ELEQ has developed a complete energy management line with current and voltage transformers.

 

 

Transformers with a 333mV output

Because measurements often have to be done in existing situations, ELEQ has developed both very small current transformers (RM17 and RM27) and split-core transformers (TQ line). This line has now been expanded with products with a low voltage output, such as 333mV. The advantages of a low voltage output are that they are safer and easy to install:

  • The transformer does no longer needs to be short-circuited.
  • There is less cable loss, which means that much longer and thinner cables can be used.
  • Thinners cables offer the opportunity to be manufactured with, for example, RJ plugs.

In short, ELEQ offers the solution for proper measurement in smarter energy monitoring.

 

Explore ELEQ’s split-core current tranformers 333mV:

 

TQ30 333mV
TQ40-C 333mV
TQ50-E 333mV

 

Looking for a compact transformer for smart energy monitoring?

Please contact us at [email protected], by phone at +31 (0) 521 533 333 or at +49 (0) 2273 988 70.

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16.04.2019

Fast and simple current measurement

Superfast and accurate current measurement is the result of using our compact split-core current transformers. ELEQ’s TQ-series is ideal for use in existing installations and in combination with digital measurement systems.

The TQ50-L is deliverable in a range from 250/1A till 1000/1A and 300/5A till 1000/5A. All TQ50 current transformers are capable of supplying the specified burden, 0,5VA, at the end of the secondary leads. The TQ50 is easy to install; the top part can be removed entirely. The TQ50 is supplied with color coded secondary leads and correct closing of the current transformer is guaranteed by a distinct sound of a “click”. Two tie wraps are included for easy assembling the current transformer on the primary conductor.

 

Application field
Energy Management
Innovations
Marine & Industry
Transport & Industry

Product category
Energy Management
Low voltage
Split-core

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ELEQ Customized transformer concept for transformer station

The transition from a fossil energy-based central energy system to a sustainable decentralized system requires a lot from the electricity network. Network operator Enexis is taking the next step towards digitization and data-driven asset management by placing sensors in its medium-voltage stations. The data collected here supports the network operator in monitoring his network, in making smart investment decisions and in implementing smart maintenance. This digitization makes it easier for municipalities and private individuals to make their energy consumption more sustainable.

Like any government company, Enexis is obliged to publicly tender its tenders. Because the network company expects to use Distribution Automation (DA) and Distribution Automation Light (Dali) boxes for a long period of time, the Enexis experts paid a lot of attention to make the Dali box future-proof. Kohlmann: “Of course we have accurately described the specifications with regard to functionality. We also opted for an open system that in principle can handle all type of data protocols. The risk of a vendor lock is more present with data communication systems than with most hardware that we use in our networks. Also the dynamics of these types of systems are very different from what we are used to as they age faster. Besides being open, the system is also quite flexible, so that we can easily add new sensors if we need them in the future.”

Current Transformers

One of the contributions to the Dali box came from ourselves. Our account manager Wim van Turennout: “We originally registered for a small but important part of the Dali box: the connection by using current transformers.”

After the contract was allowed to us, we thought we could help Enexis speed up the installation. Van Turennout: “You cannot just switch off a medium voltage station to install a Dali box. The Dali box must be mounted and connected in an operational medium-voltage station. For example, offering phase voltages and currents, but also taking over the control of public lighting and the tariff signal. Considering the amount of cabling, connecting is often a challenge. Apart from the fact that it is difficult to work in the often tight spaces, mistakes are also made quickly during connecting. Our proposal was to use special connectors for the current transformers that indicate which codes should be mounted to which phase. Subsequently, a technician only needs to follow the color codes to ensure a good connection of the current transformers. With this quite simple solution, we save technicians a lot of research work and the number of recovery actions afterwards is reduced.

Easier to assemble

In addition to the current, the voltage must be measured. For voltage measurement we provide a clamp that is easy to clamp onto the rail with the help of an isolated socket wrench which is also safer than an unsecured wire to a terminal strip, thanks to the built-in fuse. We had already developed this voltage measurement clamp for a similar concept. Again, we came up with a solution that simplifies mounting the Dali boxes, making installation a lot faster.

We like to think along with our customers and use the expertise that we build up to make their work more efficient and safer. The energy transition is a very complex exercise that requires the utmost of the knowledge and skills of the energy market. We as supplier can transfer experience from one network operator to another and thus contribute to keeping the electricity network affordable.”

Also looking for a customized transformer concept? Contact us for more information.

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