Differential current test equipment for RCBs

Tripping test for RCB

At those stations, we test all the differential functions. Starting by the tripping value, tested with current ramps, over tripping time measurement to the test of the push button with variable voltage , all test can be done.

There are some additional functions available, like the contact delay when the device is rearmed or tripping. The contact resistance can be measured. Or a color flag can be inspected.

A main advantage is that the current generator itself controls the mechanical arming.  So the ramp tests can be optimized by a direct rearming after the device is tripped. There is no additional communication between different controlers.
We are building those units for now 24 years.