What are peoples thoughts on the glut of companies jumping on the CRC bandwagon and offering voltage optimisation equipment. I have been approached by one of these companies, and reading there glossy literature (and between the lines) it seems that voltage reduction and addressing power quality...
I am looking for some advice please. I have several recently installed/commissioned 11kV/440V dry transformers. At present the facility to inter-trip the LV ACB when the HV GCB is switched to OFF or trips (using HV breaker status to shunt trip LV breaker) is not used. Question is - are there...
How do I determine the affect of in-rush current on two parallel 6.6KV 2MVA generators from 2 x 2MVA and 2 x 1MVA transformers. The generators will be up to speed before attempting to take any load and the four transformers mentioned will have minimal load ie <10%.
We have four 6.6KV 2.2MW standby generators with ability to sync together, and with the mains supply. The alternators on two of the machines are showing signs of distortion in the stator windings, one of which has failed completely.
A report by the manufacturer has stated the distortion has...
