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Shanghai Electric Group Busbar Trunking Co., Ltd.

Ring Mian Unit, Air Type Rmu, Sf6 Rmu manufacturer / supplier in China, offering 12kv High Voltage Compact Switchgear Metal-Clad AC Ring Main Unit, Jxf Jff Type Stainless Steel Cabinet Distribution Box Enclosure, Distribution Busbar Trunking Busduct System Bbt Power Bbt and so on.

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Supplier Homepage Product ring main unit 12kv High Voltage Compact Switchgear Metal-Clad AC Ring Main Unit

12kv High Voltage Compact Switchgear Metal-Clad AC Ring Main Unit

FOB Price: US $1,000-9,000 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $1,000-9,000/ Piece
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Port: Shanghai, China
Production Capacity: 500unit/Year
Payment Terms: L/C, T/T, D/P

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Basic Info
  • Model NO.: rmu
  • Structure: Protection
  • Form: All- packaged Type
  • Size: 1 Uint
  • Shell Material: Stainless Steel
  • Brand: Shanghai Electric
  • Transport Package: Wooden
  • Origin: Shanghai
  • Type: Power
  • Certification: ISO9001:2000, CCC, Type Tested
  • Operation Voltage: High Voltage
  • Application Range: Transformer Protection
  • Shell Protection Grade: IP56
  • Trademark: Shanghai Electric
  • Specification: IEC62271-200
  • HS Code: 85372090
Product Description
RMU is a ring main unit for the secondary distribution network. ARMU can be supplied in 10 different configurations suitable for mostswitching applications in 12/24 kV distribution networks. It is extendable and combined with the SafePlus concept, which is ABB's flexible, modular compact switchgear, they represent a complete solution for 12/24 kV secondary distribution networks. RMR and SafePlus have identical user interfaces.ARMU 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.
The ARMU concept offers a choice of either switch-fuse combination or circuit-breaker with relay for protection of the transformer. RMR can be supplied with an integrated remote control and monitoring unit.
This product is in conformity with the standards of IEC60420, GB/T11022, GB3804, GB3906, IEC62271-200, etc.
Service environment
A) Air temperature: Maximum temperature: +40C; Minimum temperature: -20C
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

Main technical specifications:
 No.  Item  Unit C Module  V Module
 Load break switch Circuit breaker
 1 Rated voltage  kV 12 24  12   24
 2 Rated current A  630
 3 Rated frequency Hz   50/60
 4 1min Power frequency withstand voltage  kV 45  55   45  55
 5 Lightning impulse withstand voltage kV 75 125/150  75 125/150
6 Rated transfer current A 1700 1400 
 7Rated active load and close circuit breaking current A 630
8Rated cable charge breaking current A50&10
9 Rated short circuit breaking currentkA 2016
10Rated short circuit making current(peak) kA6350 63     50
11Short time (2s) withstand current, load switch/earthkA25/20 20/2025/2020/20
12  Rated withstand current (peak)kA63 5063  50
13Mechanism lifeTimes300010000 3000  
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