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(9) for generator excitation disappear, the loss is running, don't allow generator should be magnetic chain off when the switch breaks out on automatic generator circuit breaker;For the semiconductor field and 100 mw and above using electrical excitation generator, should add direct response when the generator field loss electrical parameters of the special field loss protection.
(10) for rotor circuit overload, in the 100 mw and above, and USES the semiconductor on the excitation system of generator, shall furnish the rotor overload protection.
(11) for steam turbine and generator main valve closed suddenly appeared generator substation abnormal operation mode of the motivation to run, to prevent damage to the turbine, the large capacity of 200 mw and above turbo generator made furnish reverse power protection;For gas turbine generator, shall furnish reverse power protection.
(12) for 300 mw and above generator, over-excitation protection should be installed.
(13) other protection, such as when power system oscillation affecting the safe operation of the unit, on a 300 mw unit, appropriate out-of-step protection is installed;When the steam turbine low frequency operation can cause mechanical vibration, blade damage, great harm to the steam turbine, can be installed at low frequency protection;When the water cooled generator with water, can be installed with water protection, etc.
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Cummins 2200kw diesel generator set price
