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MEGGER SITS-120 Secondary Injection Test SetDigital metering includes memory ammeter. Timer has independent start and stop gates. Interface provided for EPS-1000A/PVS-1000 Phase Shifters.The SITS-120 incorporates high current and ac/dc voltage output capability, digital instrumentation and unique features for testing protective relays, small molded case circuit breakers, motor overload relays and timing applications. A phase shifter interface allows the SITS-120 to be used with the new EPS-1000A/PVS-1000 Phase Shifters for testing complex relays.The SITS-120, Secondary Injection Test Set, is a portable self-contained test set designed specifically for testing electro-mechanical, solid-state and microprocessor-based overcurrent, under/over voltage, ground, directional ground overcurrent, thermal, timing and various auxiliary relays. Additionally, it can perform minimum operating point and timing on current balance and differential relays.