100ADM-F CURRENT FILTER UNIT

The 100ADM-F filter unit reduces the level of current harmonics when testing electro-mechanical protection relays.

FEATURES

• Forces test current to a sinusoid
• Improves timing accuracy when testing electromechanical relays
• 0.25A-100A ranges
• High overload capability
• 50/60Hz operating frequency
• High efficiency

All electromechanical protection relays have iron cores that saturate and distort the test current under high overload test conditions. This distortion causes significant errors in the measured trip time of these relays during testing. Distortion of the waveform can be a particular problem with disc induction type over-current and sensitive earth fault relays.