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.
Huawei Monitoring System NetEco Support through ____________, send alarm information to customers.
In the dynamic environment monitoring system, the user queries the alarm information of the refrigeration equipment through the ____________ function.
The administrator cannot segment the login time and login of other users through the Huawei monitoring system IP Address restrictions.
Environmentally friendly refrigerant R410A Refrigeration performance is better than non-refrigerant R22 better.
The following ____________ Circuit breakers are usually used ITLow-voltage circuit breaker for the load.
The following ____________ Yes UPS 2N. The advantages of the system.
power supply redundancy, no need to switch the load to maintenance bypass mode, you can ups System maintenance, no single path failure point
Gas fire-fighting system refers to a fire-extinguishing system that uses gas ____________ as the fire extinguishing medium. ____________ .
including steam and aerosol , just Indeed
MCB Circuit breakers can be divided into different tripping characteristics B, C, D, Z, K Level, for IT For load, you should use ____________ class Tripping characteristics.
The following components that can improve the heat exchange capacity of the heat exchanger are ____________ .
____________ is used to ensure that the fire extinguishing agent has been sprayed out in a specific jet form to promote the rapid gasification of the fire extinguishing agent and reach the fire extinguishing concentration in the protected space.
The following () options belong to water-cooled chilled water air conditioners. (Multiple choice)
The principle of the evaporator is to convert the refrigerant from liquid to gas, take away the heat of the refrigerated object, and realize refrigeration.
Huawei Monitoring System NetEco Supports the concept of user groups, and implements role-based user group management. A user group is a group of user-level collections with the same operation permissions, and different user groups have different permissions.
The general method of connecting lead-acid batteries is to string first and then parallel.
The function of Huawei's chilled water air conditioner plug-in frame power supply is to provide a stable power supply for the fans.
Use RS485 Communication method, the maximum communication distance is ____________ Meter.
The fuse can protect personal safety when the equipment leaks.
In the data center power supply and distribution system, if a power outage occurs, it is generally caused by Complete the standby switch between mains and mains or mains and diesel generators.
Use POE When interface, it has two functions of communication and power supply.
Which of the following statements about the battery is wrong:
Exist UPS in the system, the most comprehensive description of the role of the inverter circuit is ____________ .
converting the rectified DC voltage of the mains or the battery voltage into AC voltage
The following ____________ is correct 1A fixed valve-regulated sealed lead-acid battery 2VMonomer, the rated capacity is 800Ah.
The following four major components that are not air conditioners are ____________ .
According to different classifications of electrolytes, batteries can be divided into ____________ and ____________ .
lead-acid batteries , alkaline batteries
In the dynamic environment monitoring system, viewing the detailed alarm information can help locate the source of the alarm.
The fastest transmission rate of the following communication interfaces is ____________ .