Simple, fast and safe wiring of current transformers and voltage converters

Simple, fast and safe wiring of current transformers and voltage converters

In power transmission and distribution, voltage converters and current transformers are mainly used for protection and measurement functions. Our new Klippon® Connect instrument transformer terminal blocks in the TTB range were developed to meet all of the connection requirements of these two critical applications. The wiring of current transformers and voltage converters can be carried out particularly easily and safely with our new instrument transformer terminal block series – even in complex circuits. The prevention of operating errors during operation increases plant availability and extends the life cycle of the entire control cabinet. The requirements of the end user are therefore fulfilled to the highest degree.

Instrument transformer terminal blocks for protection during measurements

In-application measurements and the protection of such measurements are among the main functions in the energy sector. Measuring devices require regular maintenance so that they remain informative and can continue to be used reliably in the industry. Above all, safety, reliability and simplicity are required here. Our instrument transformer terminal blocks ensure optimum, safe results by guaranteeing protection and enabling trouble-free measurements.

Protection

Protection relays have an extremely important and critical function in T&D grids, since they have to detect and isolate faults in the shortest possible time. Their connection with current transformers and voltage converters not only has to be RELIABLE but must also be SIMPLE and SAFE. Simplicity is extremely important when it comes to the design/standardisation of the required protection circuits (engineering phase). In addition, safety is crucial to avoid potential human errors during maintenance operations adversely affecting personnel or devices. Our instrument transformer terminal blocks make this possible.

Measurements

Indirect and semi-direct measurement applications also require RELIABILITY, SIMPLICITY and SAFETY in the connections with current transformers and voltage converters. However, special features of this application mean that a certain FLEXIBILITY is required. This might affect SAFETY (e.g. the connection of a sample series ammeter from time to time). The instrument transformer terminal blocks in our Klippon® TTB range also cover the specific requirements of measurement connections. We offer the right solutions for performing all necessary tests with our instrument transformer terminal blocks – without negatively affecting the safety of personnel and devices.

Unique features for added value throughout the process

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The planning phase is crucial for the success and cost-effectiveness of the entire panel building process. It requires intelligent interplay between digital article data and interconnected engineering tools. Efficient, easy wiring is key when it comes to the installation.

Our instrument transformer terminal blocks and our innovative products in general are impressively easy to use and boast a clear design. All functions of the instrument transformer terminal blocks can be distinguished from each other instantly.

Our Klippon® Connect products feature standardised test points which make automated testing and checking processes possible. This means that with our instrument transformer terminal blocks, your maintenance and testing tasks can be carried out much more safely and quickly.

Highlights of the Klippon® Connect TTB range

Reliable comparative measurement

Reliable comparative measurement

Reliable comparative measurement

A patented CM (Comparative Measurement) lever link allows two instrument transformer terminal blocks to be selectively separated to connect a calibrated measuring device. After the measurement, the captive lever is returned to its original position, with the "make before break" contact remaining active. This is a unique feature of the TTB range which guarantees maximum safety for personnel and devices during current transformer short-circuiting.

Effective safety cover system

Effective safety cover system

Effective safety cover system

The transparent safety cover system protects and seals the entire assembly including the instrument transformer terminal blocks. It is available either as a full-length profile or as an individual cover. It can only be fixed into place when all connection components are in their initial position. The assembly is optimally protected against unauthorised access without impairing visual inspection possibilities.

Highlights of the pluggable TTB range

ATTB 6 PG pluggable terminal blocks with integrated "make before break" function

In current transformer circuits, the ATTB 6 PG CT is equipped with specially designed 2 and 3 pole self-shorting instrument transformer terminal blocks to guarantee a "make before break" (MBB) contact in all handling conditions. For voltage circuits, a simple feed-through plug offered with the ATTB 6 PG VT guarantees the same ease of handling and safety, which is also required for voltage circuits. Both CT and VT plugs are equipped with full coding possibilities to avoid dangerous mismating. Our instrument transformer terminal blocks for quick and easy handling

ATTB 6 PG pluggable terminal blocks with integrated "make before break" function
  • Instrument transformer terminal block with integrated "make before break" function
  • Standard accessories of the A-Series
  • Data-supported accessory selection via WMC
  • Flexible "make before break" (MBB) function via lever or plug
  • Captive components
  • Reliable lockout device

Downloads

We make all of the information you need about our instrument transformer terminal blocks available for download here so that you can find out all about our products and their functions. Our catalogue contains a wide range of terminal blocks, and our brochures provide you will all of the information you need for the installation and use of our instrument transformer terminal blocks.

Consulting & support

Weidmüller is a pioneer when it comes to panel building. We've been shaping the market with our innovative products for years. And our instrument transformer terminal blocks are no exception! You no longer need complicated intermediate steps in order to short-circuit a current transformer because the measuring device needs to be maintained or replaced. With the Weidmüller terminal block, this can be done in a single lever movement. This allows the best possible protection for personnel and devices. We're happy to help and advise you on all of your concerns and questions. Our experts can be contacted at any time.

Consulting & Support

Do you have questions about our products and services or would you like an individual offer? Simply fill out contact form. Our employees will contact you as soon as possible.

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