The Megger MS-2A Circuit Breaker and Overcurrent Relay Test Set is used around the world by several thousand utility companies, industrial plants and electrical service organisations.
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The Megger MS-2A (115V version) is a self-contained test set that incorporates a variable high-current output and appropriate control circuitry and instrumentation for testing thermal, magnetic or solid state motor overload relays, molded-case circuit breakers, ground-fault trip devices and overcurrent relays.
Higher currents are available for the short durations required to test an instantaneous trip element. For example, the test set will provide a maximum short-duration output of 750 amperes through a typical, 125 ampere, molded-case circuit breaker.
Ideally suited for testing the time-delay characteristics of over-current relays, motor overload relays and moulded-case circuit breakers rated at up to 125 A, the MS-2A test sets also have a generous over-current capability. This further extends their usefulness by allowing them to be used, for example, to verify the instantaneous trip function of moulded case circuit breakers at up to 750 A. Earth fault protection devices with window CTs can also be tested easily and conveniently.
In addition to their use for testing low-voltage circuit breakers and over-current relays, MS-2A high-current primary injection test sets are also an ideal choice for carrying out earth-fault performance tests, verifying the ratio of current transformers, and checking the function of panel-mounted ammeters.
Includes: See Megger MS-2A Datasheet.