1. The generator stator voltage should not be greater than the rated voltage (110%). The minimum voltage should not be lower than the rated voltage (90%), and should meet the (factory) voltage requirements.

2. The normal running frequency of the generator should be kept at (50) Hz, and the allowable variation range is (±0.2) Hz, which can be continuously operated according to the rated capacity. When the frequency changes, the stator current, excitation current and temperature of each part shall not exceed (rated value).

3. The stator voltage of the generator is allowed to fluctuate within the rated value range (±5%). When the power factor is rated, its rated capacity does not change, that is, when the stator voltage changes within this range, the stator current can be changed proportionally. . However, when the generator voltage is lower than the rated value (95%;), the long-term allowable value of the stator current shall not exceed the rated value (105%).

4. The hydrogen purity of the generator operation shall not be lower than (96%), and the oxygen content shall be less than (2%).

5. The rated power factor of the generator is (0.85). Generators that have not been subjected to the phase-in-phase test, when the excitation regulator device is automatically activated, the power factor is allowed to operate for a long period of time in the range of 0.96 to 1; when the power factor is changed, the power factor should be The power of the power does not exceed the range of the (PQ) output curve at the time of hydrogen pressure.

6. After the generator is juxtaposed, the active load increase speed is determined by (turbine), and the reactive load increases speed (not limited), but the stator voltage change should be monitored.

7. The insulation resistance of the generator rotor winding is measured with a (500V) shaker. The insulation value must not be less than (0.5MΩ).

8. When the stator three-phase current is unbalanced, the (negative sequence) current will be generated.

9. During the boosting process, the generator checks that the three-phase voltage of the stator should rise (smoothly) and the rotor current should not exceed (no-load value).

10, 6KV motor measurement insulation should be measured using a (2500 V) volt table, the measured insulation resistance should be greater than (6) MΩ.

11. Under normal conditions, the motor of the squirrel cage rotor is allowed to start in the cold state (2 times), and each time interval is not less than (5) minutes, allowing to start (1) times in the hot state, only in the accident Motors that have been processed or started for less than (2 to 3) seconds can be started more often.

12. The insulation resistance of the 6KV high-voltage factory motor is measured under the same environment and temperature. If the current measurement is lower than (1/3~1/5) times of the previous measurement value, the cause should be checked and must be measured. The absorption ratio is "R60/R15", which should be greater than (1.3).

13. The motor can be operated within the rated voltage and the power frequency (±l%), and its rated output is unchanged.

14. The main transformer cooler (full stop) is allowed to run at the lower limit of rated load. If the load is small, the main transformer upper oil temperature does not reach the specified value, and it is allowed to rise to the specified value, but the longest running time of the main transformer must not exceed (60). )minute.

15. The three-phase unbalanced current of the AC motor must not exceed the rated value (10%), and the current of any one phase must not exceed (rated value).

16. For oil-immersed self-cooling and oil-immersed air-cooled transformers, the maximum allowable oil temperature of the upper layer shall not exceed (95) °C, and generally should not exceed (85) °C.

17. When the gas protection secondary circuit is grounded at one point, the heavy gas protection should be changed to the (signal) position.

18. The oil temperature of the upper layer of the transformer that forces the oil circulation to be air-cooled generally does not exceed (75) °C, and the maximum does not exceed (85) °C.

19. The transformer is applied with a primary voltage, generally not exceeding the rated value of the tap (105%). At this time, the secondary side of the transformer can be rated current.

20. The general power plant adopts double busbar wiring. During normal operation, one component (grounding) should be guaranteed on each entry line. The main transformer is generally grounded by (grounding knife), and the neutral point is normally (directly) grounded.

21, 6KV switchgear are equipped with "five-proof" mechanical locking device. Generally, the locking function of the forced mechanical locking device is (the trolley switch cannot be moved when it is closed), (the grounding knife is in the closed state, the trolley The switch cannot be pushed into the working position), (the switch cannot be closed when the switch is in the working position), (the grounding knife does not close, and the rear panel of the switchgear cannot be opened).

22. After all the isolating switches are closed, they must be inspected (three-phase contacts) for good contact.

23. Before closing the grounding knife gate, you must know that the power switch on each side is in the (disconnected) position and after the verification (no voltage).

24. If a load-carrying broach is generated, it should be quickly (closed) before the arc is broken. If the arc is broken, it is forbidden to re-close. If the load is closed, it is forbidden to restart (disconnect).

25. When there is no switch in the circuit, the isolation switch can be used to perform loop equalization current with the pull-in voltage not exceeding 10KV and the current below (70A).

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