ABSTRACT
The guidelines are based on over 40 years of electrical operating experience in generating stations. There may be government regulatory agencies whose recommendations have priority over the guidelines; for example, the Federal Energy Regulatory Commission, North American Electric Reliability Corporation, Occupational Safety and Health Administration, National Electrical Code, and so forth. The generating station may have site-specific environmental conditions that need to be accounted for in the guidelines. The purpose of this guideline is to ensure the continuing operational integrity of generators. Overexcitation relays are applied to protect the generator from excessive field current and overfluxing of the generator stator core iron. Protective relays provide an indication as to the location of the electrical fault. The high side overcurrent relays provide stuck breaker protection if the low side breaker fails to interrupt a fault. The alarm-only ground schemes limit the ground fault current to just a few amps.
