Megger MS-2A-CIRCUIT BREAKER & OVERCURRENT RELAY TEST SET

Thousands of utility companies, industrial facilities, and electrical service organizations use the Megger MS-2A test set worldwide. Molded-case circuit breakers, ground-fault trip devices, thermal, magnetic, or solid-state motor overload relays, and overcurrent relays can all be tested with the self-contained MS-2A test kit, which includes a variable high-current output with the necessary control circuitry and instruments.

APPLICATIONS

If the specified test protocol is followed, which involves evaluating the time delay of these devices at three times their rating, the Model MS-2A may test the time-delay characteristics of overcurrent relays, motor overload relays, and molded-case circuit breakers rated up to 125 amperes.

FEATURES AND BENEFITS

• Rugged and lightweight: The unit is robust enough to endure regular field or plant operation and weighs only 33 lb (15 kg).
• Digital memory ammeter: Short-duration currents can be measured with a high-accuracy, direct-reading device that features read-and-hold memory. Perfect for testing molded case circuit breakers, overcurrent relays, and ground fault devices.
• Digital, multirange timer: An autoranging, crystal-controlled, high-accuracy device monitors operating time to the next millisecond.
• High-current output: In a compact 33-pound (15-kg) size, it delivers instantaneous currents up to 750 amperes via a 125 ampere breaker.

SPECIFICATIONS

Input

• Input Voltage (specify one): 120 V OR 240 V, 50/60 Hz, 1φ

Output

• Output Ranges: The output is continuously adjustable in four ranges to accommodate a variety of test-circuit impedances:
• 0 to 5 A at 120 V max.
• 0 to 25 A at 24 V max.
• 0 to 120 A at 6 V max.
• 0 to 240 A at 3 V max.