Distribution substation - Generation substation instrument transformers

These Current Transformers have been designed and developed in close collaboration with RTE, the French Electricity Network, to match the most stringent requirements of outdoor substations.

- Their « window type » design makes it possible to install them under Extra High Voltage (EHV) environment taking advantage of the insulation of primary (cable, GIS busducts, wall bushing, …)

- The CT’s with ref ATOA, ATOX, ATOY for outgoing differential protection are equipped with a filter capacitor to limit the high frequency voltage peaks showing during connect/disconnect cycles, or in case of fault on the network, and of a voltage limiter protecting CT against overvoltage in case of secondary open circuit.

Current transformers vacuum moulded in self extinguishing epoxy resin for the measurement of AC currents from 100 to 30 000A.

This range of transformers is suitable for power generation. They have been designed to be installed in bus ducts between generator and transformer. They enable very high performance to be achieved.

English translation coming soon!

These ring type current transformers are available for indoor (ORX) or outdoor use (OREX). They have been designed to meet the requirements for measuring:
- line currents
- zero-sequence currents in the neutral of power transformers
- earth fault currents in power transformers.

The secondary terminals are accessible, either directly in the case of indoor equipment (ORX), or through a watertight terminal box in the case of outdoor application (OREX). Several types of terminal boxes are available depending on the required characteristics.

Voltage transformers vacuum moulded in self extinguishing epoxy resin.

This compact range is suitable for the power supply of auxiliaries in generators.

One pole voltage transformer vacuum moulded in self extinguishing epoxy resin for the measurement of AC voltages between phase and earth up to 24kV.

This voltage transformer is equipped with a K180 AR1 plug. The user connects an insulated cable equipped with a K158 LR mobile female plug. Plug-in and plug-out have to be done with no voltage present. An outdoor version is also available, with secondary terminals protected by a weatherproof cover.