AVK发电机结构和参数说明指南.pdf

Training Outline for AVK Shaft Driven Alternators HOS Stormridge Revision 07-19-02 Page 1 of 19 I. Generator Construction and Principal of Operation. A. Nameplate Data. Nameplate of the PORT Shaft Generator 1. Typ – The first field on the nameplate is the AVK type designation, basically the model of the generator. This information needs to be provided with the serial number of the machine when ordering spare parts. Both the PORT and STBD shaft generators have the same type designation which is DSG86L1-4W even though the configuration and direction of rotation of the generators are different. The generators are mirror images of each other, both generators face forward and have their pot heads on the inboard side. One generator turns clockwise, the other turns counterclockwise. 2. kVA – The kVA rating of a generator is the amount of apparent power that the generator is rated to supply. These generators are rated for 2500 kVA. This rating only pertains to normal operation with the cooler functioning. Without the cooler the generator operation would have to be de-rated. kVA is a vector summation of active power (kilowatts) and reactive power (kVAR), the two are always 90° out of phase from each other. The Power Triangle Training Outline for AVK Shaft Driven Alternators HOS Stormridge Revision 07-19-02 Page 2 of 19 The kVA rating is used in conjunction with the Power Factor to determine rated kVAR (reactive power) and rated kW (active power). kVA can be calculated by the f