XGN-12 fixed type metal- enclosed switchgear is applied 3.6kV~ 12kV three phase AC 50/60Hz system which works as indoor apparatus distribution device. It has functions like circuit protection and testing, its busbar system is single busbar and single busbar with bypass busbar, also can derive dual busbar's structure.
It complies with GB/T3906 and DL/T404. It has a completely mechanical anti-misoperation locking device which is. reliable performance, complete functions, simple structure and convenient operating, it can meet requirements of interlock function of five-preventions simply and effectively.
Ambient Temperature: No more than +40℃ and no less than – 15℃.Average temperature is no more than +35℃ within 24 hours.
Altitude: No more than 1000m.
Relative Humidity: the average daily value is no more than 95%, the average monthly value is no more than 90%.
Earthquake Intensity: No more than 8 degrees.
Vapor pressure: average daily value is no more than 2.2kPa, average monthly value is no more than 1.8kPa.
Installation locations without fire, explosion danger, serious pollution, chemical corrosion and violent vibration.
XGN-12 switchgear uses sealed metal box-type structure, and the framework of cabinet is welded by angle steel and steel sheet.
The cabinet is divided into circuit breaker compartment, busbar compartment, cable compartment and relay compartment, separated by steel plate between two compartments.
The switchgear was set by a front and a back door. And it is installed away from the wall and could be maintained from both sides.
A pressure relief channel is provided at the top of the cabinet. If an internal arcing fault occurs, it is able to release pressure and discharge gas from the pressure relief channel to ensure the safety of operators.
The switchgear has a perfect “five-preventions”, with simple and clear operation procedures.
The main circuit breakers that the switchgear uses are ZN28- 12, ZN63A, VCA, etc. series vacuum circuit breakers; and other types of circuit breakers can also be used according to the requirements.
The disconnecting switch is GN30 rotating disconnecting switch or GN22 big current disconnecting switch.
No. | Unit | Value | ||
1 | Rated Voltage | kV | 12 | |
2 | Rated Current | A | 630/1250/1600/2000/2500/3150 | |
3 | Rated Frequency | Hz | 50/60 | |
4 | Power Frequency Withstand Voltage in 1 min | Phase, Earthed | kV | 42 |
isolating Fracture | 48 | |||
5 | Lightning impulse Withstand Voltage (Peak) | Phase, Earthed | 75 | |
isolating Fracture | 85 | |||
6 | Rated Current of the Main Busbar | A | 630/1250/1600/2000/2500/3150 | |
7 | Rated Current of the Branch Busbar | A | 630/1250/1600/2000/2500/3150 | |
8 | Rated Short-circuit Breaking Current | kA | 20/25/31.5/40 | |
9 | Rated Short-time Withstand Current | kA | 20/25/31.5/40 | |
10 | Rated Peak Withstand Current | kA | 50/63/80/100 | |
11 | Rated Short Circuit Making Current | kA | 50/63/80/100 | |
12 | Frequency Withstand Voltage in 1min of Aux Control Loop | V | 2000 | |
13 | Degree of Protection | IP | IP2X | |
14 | Rated voltages of Aux Control Loop | V | AC or DC 110/220 |
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