I need some comments and/or standards to refer to regarding wye-delta choices for a step-up transformer for diesel generators.
I have (3) 1.5 MW DG Units (with a resistor ground) generating at 4160V. We need to get this connected to the 12.47kV grid, so we will install a step-up transformer...
I have a customer who has a 115kV breaker with two 10L800 CT's (1200/5) driving a string of electromechanical relays. These CT's are hooked up in series prior to connecting to the relays.
I've never seen this connection.
Any good explanations as to why CT's would be hooked up in series prior to...
I need some advice. Looking at a hospital complex with a mix of 3 phase DY, YY, and YD transformers (not sure of the exact numbers of different types of transformers yet).
Hospital has installed wye type voltage magnitude sensors on utility interconnect end to detect single phase loss.
During...
