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AVO / Multi-Amp EPOCH-I Microprocessor Enhanced Relay Test Set
One Unit of Multi-Amp EPOCH-I
A single Multi-Amp EPOCH-I is ideally suited for performing tests such as pickup point, reach, angle of maximum torque and impedance diagrams on complex single-phase relays such as distance, power, reverse power, power directional, loss of field, loss of excitation and directional over current. Additional applications include use as a variable power supply in testing transducers, measuring instruments, watt-hour meters and other devices requiring currents, potentials and/or phase shifting capability. A single EPOCH-I provides a variable current output, a variable voltage output, an adjustable phase angle setting, a harmonic generator, and comprehensive control and monitoring circuits.
Two Units of Multi-Amp EPOCH-I
All of the above plus three-phase relays such as the Westinghouse Types KD and SKD, which require open-delta test potential. Tests simulating three-phase faults and phase-to-phase faults can be quickly and easily performed. Other applications include testing synchronizing relays, reverse phase relays and the balance characteristics of current balance relays. Two test sets are also needed to conduct slope and harmonic restraint tests on transformer differential relays.
Two Units of Multi-Amp EPOCH-I and One Unit of Multi-Amp EPOCH-IV
All of the above plus a timing test on over current, over current with voltage restraint, current balance, voltage, differential, thermal and pilot wire relays. The Multi-Amp EPOCH-IV Timer is used to measure elapsed time of operation of the relay under test and incorporates start and stop gates suitable to monitor contact opening or closure, the "firing" of a trip circuit SCR and the application or removal of an AC or DC voltage signal. |
