There are three basic principles of operation for the electrical system: 1. The variable frequency is converted to constant 400 Hz using a solid state, high power inverter. Type 2: Each VSCF (Variable Speed Constant Frequency) Generator is driven directly from the engine gear box, rotating at a variable speed. Type 1: Each engine generator is connected to its respective engine through a CSD which converts variable engine RPM to the constant speed needed to produce 400 Hz used by the electrical system components. They will have no differences in system behavior and indication. Two different types of generators may be installed at the same time. No parts of this training manual may be sold or reproduced in any form without permission of:ĪC POWER PHILOSOPHY Electrical power is generated by one generator on each engine and by one APU generator. Copyright by Lufthansa LAN Technical Training All rights reserved. Training Manual B 737-300/400/500 ATA 24 Electrical Power PART 66 B2įor training purposes and internal use only.
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