HONEYWELL CC-PAOH01 input module

Current Transformer. A device used to sense current levels on a high current source, such as a generator. The secondary side of the current transformer supplies a lower current signal that is safe to feed into metering and control devices. The EGCP-2 uses 5A secondary current CTs for its current sensing inputs from the three phases of the generator. Dead Bus Closing The ability of a generator breaker control device to sense, and safely close on to a load which has no other generators or sources of power tied to it. Dead Bus Closing must not allow two generators to attempt closure to the dead bus at the same time, since an out of phase paralleling situation would likely occur. The EGCP-2 uses its Local Operating Network to insure safe dead bus closing among all units tied to this network. The units have a single dead bus token, which allows the unit possessing it to close to the dead bus. Only one token exists on the network, so there is no possibility of multiple units closing to the dead bus simultaneously. Dead Bus Closing is always active in single unit configurations.

A reduction in the reference of a controlled parameter

 as the amplitude of that parameter increases (negative feedback). The EGCP-2 uses Kilowatt Droop as a manual means of loading the generator when paralleling to another generator, or to the mains. Droop Control is effective only if the LOAD CONTROL MODE set point in the Configuration menu is set to DROOP. Dwell Time A term used to describe the amount of time required during synchronization in which one power source is within a specified phase angle window of another source it is synchronizing to.

Hard Shutdown 

A shutdown condition used by the EGCP-2 for various alarm settings that will cause the unit to immediately open its generator breaker if on load, and shut down when reaching or exceeding the alarm parameters. Isochronous A term which is used to describe a generator set that will maintain its frequency at a constant level as the load on that generator changes. The EGCP-2 typically uses Isochronous load control when in load sharing, or when operating as a single unit. This assures a constant frequency under all generator loads that are within the capacity of the generator.