Low-voltage applications

Low-voltage grids are used to supply electricity to consumers at the lowest voltages. Zelisko’s low-voltage current and voltage transformers focus primarily on energy metering applications.

Our high-precision instrument transformers are tested and supplied in compliance with the relevant national energy metering standards (PTB; BEV; ESV; GOST). All our transformers have a completely maintenance-free, dry-type design, and no recalibration is required at any point in the product life cycle.

A black cubic plug-in current transformer with a hole in the middle, suitable for both metering and protection purposes

Slip-On Current Transformer

Slip-On Current Transformers are suitable for both measuring and protection purposes. Each size allows a large number of variations in height and inner diameter due to the modular design of the casting molds.

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A black cubical dry type voltage converter for use in low-voltage switchgear

Voltage Transformer

A fully enclosed dry-type voltage converter with class E insulation for use in low-voltage switchgear. The primary and secondary windings are arranged around a coil body and are covered by two halves of the housing made of self-extinguishing material. The converters are manufactured according to IEC 61869-3 standards.

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A brown toroidal current transformer which is suitable for both metering and protection purposes

Ring Core Current Transformer

Ring Core Current Transformers are suitable for both measurement and protection purposes. Each size allows a large number of variations in height and inner diameter due to the modular design of the potting molds. This means that multi-core converters, e.g. measuring and protection cores, can also be offered in one device without any problems.

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