Capacitor at generator output
Capacitor at generator output
(OP)
Hi,
I've remark that on a lot of small hydro generator (4-5 MW), there's a little 3 phases capacitor just at the output of the generator, in the junction box, where the cables from the switchgear are connected. There is also surge arrestor connected in parralel at this location.
My question is, what's the purpose of this capacitor? The generator is synchronous, so no need to correct the power factor.
Thanks
I've remark that on a lot of small hydro generator (4-5 MW), there's a little 3 phases capacitor just at the output of the generator, in the junction box, where the cables from the switchgear are connected. There is also surge arrestor connected in parralel at this location.
My question is, what's the purpose of this capacitor? The generator is synchronous, so no need to correct the power factor.
Thanks






RE: Capacitor at generator output
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RE: Capacitor at generator output
Capacitors and surge arrestors work together. The capacitor handles the dV/dt; the surge arrestor clamps the voltage peaks and protects the capacitor as well as the winding.
RE: Capacitor at generator output