Omicron VEHV1010

The CMC 356 is the universal solution for testing all generations and types of protection relays. Its powerful six current sources (three-phase mode: up to 64 A / 860 VA per channel) with a great dynamic range, make the unit capable of testing even high-burden electromechanical relays with very high power demands.

The CMC 356 is the first choice for applications requiring the highest versatility, amplitude and power. Commissioning engineers will particularly appreciate its ability to perform wiring and plausibility checks of current transformers, by using primary injection of high currents from the test set.

Recommended for tests requiring

•  higher currents/power in the current path. 
• more than 3/6 current channels (e.g. for testing 3-winding transformer differential protection). 

The CMA 156 contains 6 independent current channels, arranged in two isolated groups (A, B). By connecting all six current phases in parallel, for example, a power of up to 420 VA and current up to 150 A can be delivered, which allows testing a wide range of electromechanical relays.

¹ For higher current/power requirements: CMA units can be switched in parallel. 

² THD+N: Values at 50/60 Hz with 20 kHz bandwidth.

³ Self diagnostics of the hardware upon each start up. All current and voltage outputs are fully overload and short-circuit proof and protected against external high-voltage transient signals and overtemperature.