SummaryThe preceding discussion and examples of governoroperation can be summarized as follows:1. The simplest governor combination for paralleledelectric sets is to have a 3% speed droop characteristicfor each governor. If a constant frequency from no-loadto full-load is required, one governor can be adjusted forisochronous operation. This is called a "lead unit”.2. In order for all paralleled units to accept their fullshare of the load, the following governor adjustments arerequired:a. The same full load speed.b. The same high idle (no-load) speed in the case ofgovernors adjusted for speed droop operation.c. Governor controls set to the high idle position so thefull governor range is available.3. Operation of an isochronous governor in parallel withspeed droop governors requires the special techniquesdescribed in example 2.4. Any number of electric sets can be operated inparallel. However, only one governor of the group canbe adjusted for isochronous operation except in thespecial cases of electronic governors with automaticload sharing.Electronic (2301) GovernorWhen using Electronic Governors (2301) load sharingwill be done automatically if it is a load sharingGovernor.StoppingTo remove a generator from the line do the following:1. Check the load. It must be less than the ratedcapacity of the remaining units.2. Be sure the neutral of one of the remaining units isgrounded.3. Remove the load from the outgoing unit as describedin LOAD DIVISION. The amperage may never go tozero due to circulating currents.4. Open the circuit breaker.5. Allow the engine to cool for 5 minutes.6. Stop the engine.19
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