AC HV Gas Insulation Metal-Clad Switchgear (DXG-12)

GIS General:
DXG-12 Indoor AC HV Gas Insulation Switchgear (hereafter referred to as "GIS") is a new generation of switchgear. The main switchgear can adopt vacuum circuit breaker of permanent magnet mechanism or vacuum circuit breaker of spring mechanism. It adopts air insulation and SF6 compartments, which makes the space inside the GIS is not only compact, but enough to enlarge. It is suitable for power distribution automation. The GIS is featured by compact structure, flexible operation and reliable interlock etc. It is suitable for varieties of places (especially for bad condition) and it provides different request of customers with different technical scheme. It satisfies the customer's requirement with sensor technical performance, the latest protection relay in addition to advanced technical performance and flexible and light assembly scheme. It is widely used in miniature secondary substation, switching station, combined substation, residential area, industrial and mining business and malls, especially suitable for airport, underground and railway and other places where electricity power is in need largely.
Service ambient conditions:
A. Air temperature: Max: +40º C, Min: -25 º C(average valueB. Altitude: C. Air humidity: Daily average relative humidity D. The range of induction electromagnetic interference in secondary system
Product feature:
A. Structure:
The compartments of GIS use 3-5mm corrosion resistance plates, which are firstly processed by digit-controlled lathe and then welded by welding robot, with the advantage of less amount of deformation, good seal. Other compartments are made of high quality cold rolled sheets, which firstly bent and then welded, with the characteristics of high accuracy and intensity. The functional units are separate module, so it is convenient for assembly. Besides the sealed compartments in the GIS have separate pressure release passages, which ensure the safety of the personnel and equipments.
B. Standards:
The universal technical requirements of GB11022-1999 HV Switchgear and control equipment standards GB/3906-1991 3-35 kV AC Metal-clad Switchgear.
C. Protection degree:
IP 67 of gas insulating compartments, IP4X of LV switchgear.
Ordering notice:
Please provide the following materials while ordering:
A. Primary wiring scheme and single busbar system diagram
B. Secondary control principle diagram or wiring diagram terminal pareto diagram
C Layout plan of switchgear.
D. Detailed type, specification, quantity of electric components inside the switchgear.
E. If without any request for the material and specification of busbar from customers, they will come up with manufacturer'requirement.
F. If the switchgear is used in special environmental condition, it should be marked while ordering.
G. Wiring scheme of major loop.
H. The principle diagram of auxiliary circuit and control circuit of GIS and other written materials requested.
v id="StyleTableProd">

Item	Description			Unit	Value
1	Rated Value			kV	12
2	Rated Current	Primary Busbar		A	630 1250
		Branch Busbar			5-1250
3	Rated Frequency			Hz	50
4	Rated Power Frequency Withstand Voltage  (1min)	Phase to Phase, Phase to Earth		kV	42
		Insulating Distance			49
5	Rated Impulse Withstand Voltage	Phase to Phase, Phase to Earth			75
		Insulating Distance			85
6	Rated Short-time Breaking Current			kA	20 25 31.5
7	Rated Short-time Withstand Current (4s)			kA	20 25 31.5
8	Rated  Peak Withstand Current			kA	50 63 80
9	Rated Short-time Making Current			kA	50 63 80
10	Protection Level				Tank filled with gas: IP67, LV Tank: IP4X
11	Dimension			mm	500x1000x1850
12	Mechanical Endurance	Permanent Magnet Circuit Breaker		Times	20000
		Insulating Switch			5000
13	SF6 Rated Pressure (20C gauge pressure )			Mpa	0.04
14	SF6 Min Pressure(20C gauge pressure )			Mpa	0.03
15	SF6 Annual gas loss rate			%	≤ 1