10kv Substation Sf6 Gas Insulated Metal Closed Modular-Compact Switchgear/Sf6 Load Break Switch/Lbs Breaker Sm6 RM6 Breaker Switchgear

• Customization: Available
• Task: Earthing Protection, Opening ,Closing Protection
• Structure: Combination
• Model NO.: XGN-12(F. R)
• Mathematical Model: Sf6 Gas Insulated Switch Protection System
• Signal: Sf6 Insulated
• Function: Automatic Control, Protection, Monitoring, Measurement
• Certification: RoHS, CCC, ISO: 9001, CE
• Condition: New
• Customized: Customized
• Material: Stainless Steel
• Rated Voltage: 12kv 24kv 40.5kv
• Rated Current: 630A
• Switch: Sf6 Load Break Switch
• Operation: Motor/Manual Mechanism
• Protecting Type: Earthing ,Fuse,Microcomputer(for 35kv)
• Transport Package: Pallet Wooden
• Specification: 600x900x2000
• Trademark: MINGZHE
• Origin: China
• HS Code: 8537209000
• Production Capacity: 2000PCS/Week

Product Description

Product Description

1.Product description

Gas insulated ring main unit is for the secondary distribution network 11/17.5/24/36 kV. It  is a completely sealed system with a stainless steel tank containing all live parts and switching functions. A sealed steel tank with constant atmospheric conditions ensures a high level of reliability as well as personnel safety and a virtually maintenance-free system.

It offers a choice of either switch-fuse combination or circuit-breaker with relay for protection of the transformer. SafeRing can be supplied with an integrated remote control and monitoring unit.

2.Service environment:
a) Air temperature:Maximum temperature: +40ºC; Minimum temperature:-25ºC
b) Humidity:Monthly average humidity 95%; Daily average humidity 90% .
c) Altitude above sea level:Maximum installation altitude: 2500m
d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
e) No frequent violent shake
f)SF6 pressure:1.4bar
g) Gas leakage year rate:0.2‰/year
h)Ip range:IP67
i)Thickness of gas stainless steel tank is 3.00mm
j)Bus is 400mm2 Cu,Bus earthing is150mm2Cu

3. Modularization design
The modular design scheme is adopted. The basic modules are load switch module, combined electrical module and other special function modules.Any combination of these modules forms a common box structure, in which any one function is roughly the same as the internal structure of the basic module
 

4.Standards

 IEC 62271-100 high voltage alternating current circuit breakers
IEC 62271-105: alternating current switch-fuse Combination
IEC 62271-102: alternating current disconnectors and earthing switches
IEC 62271-200 A.C. metal enclosed switchgear and controlgear for rated voltage above 1 kV and up to and including 52 kV
IEC 62271-103 high voltage switches for rated voltage above 1 kV and less than 52 kV
IEC 60694: Common specifications for high-voltage switchgear and controlgear standards

5. Flexible exit and extension mode
All modules can realize the connection mode of side outgoing line and side expanding line or outgoing line and top expanding line according to the customer's requirements, so as to meet the demand of power supply scheme to the greatest extent
 

Product Parameters

6.The main technical date  

Item	Unit	Switch	Switch-fuse	Vacuum circuit-breaker
Rated voltage	kV	24	24	24
Power frequency withstand voltage	kV	50	50	50
Impulse withstand voltage	kV	125	125	125
Rated current	A	630	2001)	200
Breaking capacities:
active load	A	630
closed loop	A	670
off load cable charging	A	141
off load transformer	A		20
earth fault	A	160
earth fault cable charging	A	91
short-circuit breaking current	kA		see 2)	16
Making capacity	kA	40	see 2)	40
Short time current 0,5 sec	kA			16
Short time current 1 sec	kA			16
Short time current 3 sec	kA	16

 1) Depending on the current rating of the fuse-link    
 2) Limited by high voltage fuse-links 

7.Standard cell
 

8. Product main features
.RM-12/24 series switchgear cabinets use sf6 gas as arc extinguishing and insulating medium
Switchgear as a fully sealed and fully insulated structure;The bus, switch and live parts are completely enclosed in the stainless steel case.
The chamber is filled with 1.4bar sf6 gas, and the protection level reaches IP67.The whole switch device is completely free from the influence of the external environment. Even in extreme cases such as short time of water immersion, it can guarantee the normal operation of the switch. The product is free of maintenance for life.
The switchgear has a  5 kinds interlock device, completely eliminate the human error operation may cause personnel and equipment operation fault
All switchgear cabinets have reliable pressure relief channels, even in extreme cases can also protect the safety of the operator

• Switchgear is divided into two categories: fixed unit combination and expandable unit combination.

Switchgear is entered by front normally line, also can be realized according to different according to the position side line out or side expands.
Cabinet put oneself in another's position dimension is convenient according to, can suit the place with narrow space and bad environmental condition.
Switchgear can be configured according to the different needs of users electric, remote control and monitoring devices.

9.Main Constructure
 

	The switch Module is a three position switch disconnector and earthing switch using SF6 gas as an arc quenching medium. The switch position is close - open - earthed. In the open position the switch satisfies the disconnector requirements.
The switch-fuse module has a three position switch disconnector and earthing switch identical to the  switchmodule. By means of the fuse tripping device it operates as a switchfuse combination. There is a double earthing switch which in earthed position connects earth to both sides of the fuse-links simultaneously. Both earthing switches are operated in one operation. The switch-fuse and earthing switch is mechanically interlocked to prevent hazardous access to the fuse-links. The lower cover which gives access to the fuse-links is also mechanically interlocked with the earthing switch.
	The vacuum circuit-breaker module has vacuum bottles as interrupters of the current. In series with the circuit-breaker main circuit is connected a three-position disconnector / earthing switch. The operation between vacuum circuit-breaker and disconnector/ earthing switch is mechanicall

10. Two way ring main unit CCFF offers switch-fuse combination for protectuin of transformer.Connection



 

 

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