1. Equipment function:
The tester is used for DC contactor action test, mechanical life test and electric Life test, it's also special for testing contactor 3 phase with diferent Duration, excess of stroke and separation. Equipment start working, judge Qualified situation, record result and build database after setting corresponding.

Parameters.
2. Input parameters for tester
(1) Input requirment: AC380V± 10%, three phase four wire.
(2) Input wire area: 25 square milimeter.
(3) Input capacity: 30kVA.
(4) Temperture: -25-50 celsius degree.
(5) Output current: DC50A-2500A.
(6) Relative humidity: 0-70%.
(7) Connected and break frequency: 180-2400 times per hour.

3. Output parameters for tester
(1) Voltage: DC12V24V48V70V120V.
(2) Meter precision grade: One grade.
(3) Close and break time: 0-100mS.
(4) The tester with load system.
(5) Voltage drop testing, open-circuit voltage DC10V, close-circuit DC50A-
2500A, contact voltage drop 0-200mV.
(6) Aluminum structure, controlled by computer, display close peak current.