XGN66-12(Z) Fixed Metal Enclosed Hight Voltage Distribution Cabinet Switchgear

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Xgn66-12 fixed enclosed switchgear (hereinafter referred to as switchgear) is a complete set of new generation high-voltage electrical appliances of our company, It meets the requirements of national standard GB3906 “3-35kv AC metal enclosed switchgear” dlt404 “indoor AC high voltage switchgear ordering technical conditions” of Ministry of power, and also meets the requirements of international standard iec60298 “AC metal enclosed switchgear and control equipment above 1kV and below 52kv”.
This product has absorbed the advanced technology of foreign countries, its volume is small, only 50% of the volume of the ordinary switch cabinet; the circuit breaker has the advantages of high reliability, good performance, reliable and simple “five prevention” interlocking mechanism. The switchgear is an indoor complete set of 3.6, 7.2 and 12kV three-phase alternating current 50Hz single bus sectionalized device for receiving and distributing electric energy. It can be used in various types of power plants, substations, industrial and mining enterprises, high-rise buildings and other places. It can also be combined with the ring network cabinet and applied in the switching station.

Model meaning


X: Box Type Switchgear
G: Fixed Type
N: Indoor Type
66: Design Number
12: Rated Voltage (Kv)
Z: Vacuum Switch

Conditions of Use

The altitude shall not exceed 1000m
Ambient temperature: – 25C ~ + 40C, the average temperature within 24 hours shall not exceed + 35C.
The horizontal inclination is not more than 3 degrees.
The earthquake intensity shall not exceed magnitude 8.
There is no dangerous place of violent vibration, impact and explosion.

Structural features

• The cabinet body is welded with high-quality angle steel;
•The circuit breaker room is located in the middle (lower) part of the cabinet, which is convenient for installation, debugging and maintenance. Standard VS1 circuit breaker is equipped with pressure release channel to ensure personal safety;
•Adopt advanced and reliable rotary isolating switch, which can safely enter the circuit breaker room for maintenance when the main bus is live;
•The protection level of the whole cabinet is IP2X;
• Equipped with a reliable and fully functional compulsory mechanical locking device, which can easily and effectively meet the “five prevention” requirements;
• Have a reliable grounding system;
• The door is equipped with an observation window, which can clearly observe the working status of the components in the cabinet;
• The operating mechanism is locked using the same JSXGN locking mechanism used in the XGN2-12 cabinet, which is simple, reliable, convenient and practical;
• The incoming and outgoing cables are lower than the front of the cabinet, which is convenient for users to connect.

Main technical parameters of vacuum circuit breaker:

Main technical parameters and component models of switch cabinet

No project Company technical parameter
1 Rated voltage kV 3.6,7.2, 12
2 Rated power frequency withstand voltage kV To ground, phase to phase: 42: fracture: 48
3 Rated lightning impulse withstand voltage kV To ground, interphase: 75: fracture: 85
4 Rated frequency Hz 50
5 Rated current A 630,1250,
6 Rated short-circuit breaking current (effective value) kA 20,25,31.5,
7 Rated short-circuit making current (peak value) kA 50,63, 80,
8 Rated dynamic stability current (peak value) kA 50,63, 80
9 Rated thermal stability current 4S (effective value) kA 20,25, 31.5
10 Degree of protection mm IP2X
11 Boundary dimension (W x D x H) kg 900x 1000x 2300
12 weight kV ≈600
13 Rated voltage kV 3.6,7.2, 12

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