In the low-voltage power distribution system,PE The function of the line is to provide a path for the fault current when the power supply system fails.
Exist UPS in the system, the most comprehensive description of the role of the inverter circuit is ____________ .
The following ____________ Circuit breakers are usually used ITLow-voltage circuit breaker for the load.
The compressor is the core of the refrigeration cycle. It is the power device for the refrigerant to circulate in the system. It reduces the low temperature from the evaporator. The compressed steam is compressed into high temperature and high pressure steam.
UPS Common system configurations are N system,N+X system,2N system.
The function of Huawei's chilled water air conditioner plug-in frame power supply is to provide a stable power supply for the fans.
The following ____________ Yes UPS N The advantages of the system.
Huawei chilled water air conditioners rely on ____________ to adjust the water flow.
____________ can complete the conversion from DC to AC.
Huawei Monitoring System NetEco Support through ____________, send alarm information to customers.
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