Table of Contents
What is flashing the field mean?
Flashing The Field. A maintenance procedure for a DC generator that restores residual magnetism to the field frame, A pulse of current from a battery is sent through the field coils in the direction in which current normally flows.
What is the field on a generator?
The field of a synchronous generator is the winding to which the DC excitation current is applied. The armature is the winding to which the load is connected. In small generators, the field windings are often on the stator, and the armature windings are on the rotor.
How do you flash a field on an aircraft generator?
If the generator is in the airplane simply flash the “arm” pole of the generator with 12 volts. A jumper wire with clips on both ends can be used. Attach one end of the wire to the battery side (hot pole) of the master relay. Flash the other end to the “arm” (some are marked “gen”) pole on the generator.
What does it mean to flash a generator?
Residual magnetism in the generator exciter field allows the generator to build up voltage during start-up. This magnetism is sometimes lost due to shelf time or improper operation, among other reasons. Restoring this residual magnetism is possible and is sometimes referred to as “flashing the exciter field”.
Why do you polarize a generator?
Polarizing your 12-volt generator is necessary for your generator to work in conjunction with the regulator. A generator, unlike an alternator, can run off both positive and negative current. A regulator always runs off positive current.
Why do I have to keep flashing my generator?
Why do you flash a generator?
What happens when you polarize a generator?
Things You’ll Need A regulator always runs off positive current. As a result, if the generator is not polarized to a positive charge and positive current is sent into the terminals, the generator can be damaged as well as the other motors and switches on the same current.
Can a generator lose its magnetic field?
Loss of residual magnetism may be caused by the generation being out of use for a while, having a connected load when the generator is shut off, running your generator for too long with no load, or if your generator is new, it could have lost residual magnetism from long distance transportation vibration.
Do I need to polarize my generator?
Why do you need to excite a generator?
Generators turn mechanical energy into electrical energy by moving electrical conductors in a magnetic field. Excitation creates the electromagnetic field to make this mechanical to electrical conversion occur.