High voltage switch dynamic characteristics tester prompt "output short circuit or excessive load, please shut down check control wiring"
Control wiring error, resulting in short circuit of the instrument output, resulting in the short circuit protection function to start, high voltage switch dynamic characteristics tester "close, open control power supply" no output.
Solution: After shutdown, refer to the instruction manual of the first check wiring.
Field coil load is too large, the high voltage switch dynamic characteristic tester can not drive normally
Treatment methods:
1. For the switch of the electromagnetic mechanism, the driving current required by the switching closing coil is very large (up to 100A or several hundred amps), and the carrying capacity of the instrument operation power supply is 20A. As a result, the high voltage switch dynamic characteristic tester cannot drive normally due to excessive load.
The field is generally the closing control line is connected to the closing contactor coil in front of the closing coil, with the instrument control switch contactor closed, with the contactor to drive the switch closing coil, so that the switch action. Or use "external trigger" mode to operate the switch to close.
2, for the hydraulic and spring mechanism switch, because the output current of the instrument is greater than 6A, the default is "too large load". Take a look or use a multimeter to measure the resistance value of the closing coil to make sure that the current of the closing coil is large.
Then please carefully check the wiring, confirm that there is no short circuit in the closing output, then cancel the short circuit protection function of the high voltage switch dynamic characteristic tester for the test. (Note: after the short-circuit protection function of the instrument is cancelled, the output of "closing and opening control power supply" does not have the protection function. If the output of the control power supply is indeed short-circuited at this time, it may cause the damage of the instrument control power supply! Exercise caution)
The specific method is: shutdown → press and press to build do not release → boot, until the "release button" screen prompt → release the button, short circuit protection function cancelled.
Note: as long as the high voltage switching characteristics tester is shut down or reset, the short circuit protection function is restarted.
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