The main process flow of generator stator cooling water system is:
Stator cooling water tank---stator cooling water pump---exchanger cooling heat pump---mechanical filter---magnetic filter - --Generator stator winding---Stator cooling water tank
There are also two special subsystems, one nitrogen purge system and ion purification system: the nitrogen purge system is installed on the upper part of the stator cooling water tank, with nitrogen There are two pipelines for feeding and blowing; The ion purification system is a branch of the stator cooling water system. It mainly circulates part of the water after the mechanical filter through the ion purification system to remove ion impurities before returning. to the cooling water tankt of the stator.
Should the generator rotor insulation standard be converted to 75 degrees? Why does the short circuit resistance need to be converted to 75 degrees? is used under nominal working conditions. The voltage, current, and loss of the excitation system are all based on the DC resistance value of the rotor at 75 or 130 degrees. The 75 and 130 here are determined based on the insulation level of the generator. . For level B insulation choose 75 degrees and for level F insulation choose 130. Spend. So the generator...
Baidu Knows 2016-12-22
Generator rotor insulation standards
1. The stator insulation measurement location is in the generator. Grounding cabinet. Stator insulation can only be measured when the rotor is stationary or rotating, the generator is charged with hydrogen at nominal pressure, and the stator cooling water is put into operationand the conductivity of the cooling water is approximately 0.2 μs/cm. 2. Measurement methods and...
Baidu Knows 2020-01-02
Generator insulation requirements-20211027214301.doc-Original document
4 Standards for generator rotor insulation: when the external circuit is disconnected, the insulation value of a 300 V megger at 20°C should not be less than 100 MQ; at 30°C, it must not be less than 50 MQ (10 minutes) Insulation value/; I minute insulation value), when it is lower than the above value, the reason must be found, otherwise it will not be...
Original force document 2021-10- 27
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Generator Insulation Requirements
1 page · ￥10 · Heat 50
2.2.3.2 Insulation requirements before starting the generator: 1. The insulation resistance of the generator should be tested by maintenance personnel before starting. 2. The. generator insulation measurement conditions: The conductivity of the cooling water is about 0.2 scm; the hydrogen pressure is at the nominal value; open the grounding knife of the neutral point of the generator:...
Quark Document 2019-05-21
What is the insulation value of the generator rotor_Baidu knows
Answer: 3
Not less than 0.1 M ohm.
Baidu knows
Generator insulation requirements-20210325234330.docx-original document
4 Generator rotor insulation standards: when the external circuit is disconnected When using a 500Vmegger, the insulation value at 20°C must not be less than 100 MΩ; at 30°C, it must not be less than 50 MΩ; the IP polarization index must be greater than 2 to qualify (IP=10 minute insulation value/1 minute insulation value), less than The above values must be...
Original force document 2021-03-25
Generator insulation requirements (1 page) - Original force document
Total 1 page
4 Generator rotor insulation standards: When the external circuit is disconnected, the insulation value of a 500V megger at 20℃ should not be less than 100MΩ; 30℃, the insulation value should not be less than 50MΩ; polarization IP rating must be greater than 2 to qualify (IP = 10 minute insulation value/1 minute insulation value if it is less than the above value it should...
Original document 2019-09-21
Cheese generator rotor standard value?Answer
The insulation of the stator can only be measured when the rotor is stopped or starting, the generator is charged with hydrogen up to the nominal pressure, the water stator cooling is put into operation and the conductivity of the cooling water is approximately 0.2 μs/cm. 2. Each unit has different measurement methods and standards. ①. The generator must be untied before measuring the unit stator insulation...
Cheese Answer 2022-03-18
Generator Rotor Insulation Standard_Cheese Answer
1. The stator insulation measurement location is at the generator neutral point grounding cabinet. Stator insulation can only be measured when the rotor is stationary or rotating, the generator is charged with hydrogen at rated pressure, the stator cooling water is turned on and the conductivity of the cooling water is approximately 0.2 μs/cm. 2. Measuring methods and...
Cheese Answer 2021-03-23
Generator insulation requirements.docx-Taodou.com
4 Standards for generator rotor Insulation: Use a 500V oscillating meter when the external circuit is disconnected. Use a 500V oscillating meter when the external circuit is disconnected. The insulation value at 20°C should not be less than. the meter at 20°C. The insulation value at 20℃ should not be lower than the insulation value at 20℃...
Taodou.com
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