The built-in DC operation power supply has overload, overcurrent, overheating, and short circuit protection and self recovery functions. Even if the wires are connected incorrectly, it will not cause damage to the instrument itself or power equipment.

High end seamless aluminum alloy anti-static chassis, with an external seismic resistant chassis design, is lightweight, aesthetically pleasing, sturdy and durable, making it very suitable for field operations.

Measurement channels: 12 time channels, 2 travel channels (automatic recognition of linear and digital channels).

Display: The 320 × 240 large screen LCD can clearly display all test data, various curves, and real-time clock under strong sunlight.

One click shuttle rotation mouse with shortcut keys for easier operation.

It can automatically recognize and display the current status of the tested switch, and can automatically detect and display internal faults.

Trigger mode: coil current or any analog/digital input channel.

Storage: Real time storage of 60 sets of data and graphics in the machine or massive storage on a USB drive.

Main testing functions:

Time: closing/opening time (main contact/contact with closing resistor), three-phase different periods, in-phase different periods, bounce time and frequency, switching of auxiliary switch and coordination time of main switch.

Speed: average speed, initial/final speed, maximum speed, and average speed of any defined segment on the travel curve.

Displacement: stroke, opening distance, overtravel, overshoot stroke.

Recloser: Bounce time, metal short-circuit time, no current interval time, and any set reclosing interval time value.

Action voltage: Any set action voltage value or fully automatic low voltage test.

Other: One switch action can obtain the comprehensive waveform of each input signal (time, speed, stroke, bounce frequency), peak current of the circuit breaker closing/opening coil, pulse width, etc.