Voltage stabilizer trips RCD ?
Good day folks. A friend of mine asked me to have a look at this fat servo-driven voltage stabilizer. It claims to be 10kVa ! He says it works but it sometimes trips the breaker at the panel (not its own at the front there), despite having a very light load connected to it, or none at all. Unfortunately, I don't know for sure whether it's an RCD that trips here or a regular dumb MCB. Either of them could cause the issue if they weren't sized according and they'd get tripped by the high inrush current - this was my initial hunch, but the thing is he says it doesn't happen at startup, but rather during normal operation, more specifically when the mains spikes/sags and the stabilizer SHOULD do its thing, but instead all it does is pop the breaker. I haven't witnessed this myself and it's hard to replicate, so I don't know for sure.
I plugged it in myself in a different location and sure enough it works as you'd expect: it fires up, the variac inside twitches a bit and you get 220v at the output, so the device itself works. What do you suppose could be causing this and what would a possible fix be, preferably still adhering to electrical safety rules ?
I plugged it in myself in a different location and sure enough it works as you'd expect: it fires up, the variac inside twitches a bit and you get 220v at the output, so the device itself works. What do you suppose could be causing this and what would a possible fix be, preferably still adhering to electrical safety rules ?
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