11 Kv Cgis Rating 31.5 Kv / 3 Sec Test Top Connection of Bus Bar for Panel to Panel in ABB Vacuum Interrupter

• Type: Ring Main Unit
• Structure: Fixed Board
• Certification: ISO9001:2000, VDE
• Form: All- packaged Type
• Operation Voltage: High Voltage
• Size: Max 6 Loops
• Model NO.: 8MRMU-CB
• Application Range: High-rise Buildings
• Shell Material: Stainless Steel
• Shell Protection Grade: IP42 or Cutomized
• Brand: Sanhe
• Transport Package: Plywood or Solid Wood
• Trademark: sanhe
• Origin: Shenzhen China
• HS Code: 8536200000
• Production Capacity: 100000

Product Description

    The Ring Main Unit 8MRMU was developed under Germany technology by the engineers of over ten years switchgear production and application experience. We designed it on the concept of self-contained and totally insulated switchgear for secondary power distribution network. The products conform to China national GB and IEC standards      
   The Ring Main Unit 8MRMU is insensible to the environment and it is maintenance free. All the live parts are integrated well in the gas tank which SF6 is filled at 0.03 MPa gauge pressure(relative). These parts cover bus bar system, load break switch, disconnector, circuit breaker, earthing switch , fuse holders etc. The compact system,of which up to 6 loops could be accommodated in a single gas tank, is ideal solution for the installation site with a harsh climatic condition or environmental restrictions, We have gave models for the standard specification like 12kV and 24kV. Meanwhile,we can accept OEM or ODM business.

Feature:
Compact design
Maximum 6 loops could be accommodated in a single gas tank, space-saving, maintenance free
Environment-friendly structure
Hermetically tight gas tank make the parts of the primary circuit insensitive to certain aggressive ambient conditions, such as: Saline air,Air humidity, Dust And free from foreign objects etc
Maintenance-free design
Sealed pressure systems brings high reliability and safety.Finally,It is cost-saving.  
Innovation system
Clear integration of secondary systems and combined protection and control  units is well adapted to new system conditions.  
Service life
The expected service life of gas-insulated switchgear is over 30 years. The product lifespan is 45 years

8MRMU-CB Feeder or Incoming Panel with Vacuum Circuit Breaker

Model Number	Voltage(kV)	Rated current	Short circuit breaking  current	Switch Type	Actuator	Insulation type	Structure	Remark
8MRMU-CB	12/24	630A	20kA	VCB+upstream/downstream-DES	mechanical spring/PMA(Permanent Magnetic Actuator)	SF6	Max.4 loops	standard

Specification 

Rated Voltage	kV	12	24
Rated Frequency	Hz	50/60
Power Frequency Withstand Voltage (1min)(Phase to Phase, Phase to Earth)	kV	42	50
Power Frequency Withstand Voltage (1min)(Isolation Gap)	kV	48	60
Lightning Impulse Withstand Voltage(Phase to Phase, Phase to Earth)	kV	75	125
Lightning Impulse Withstand Voltage(Isolation Gap)	kV	85/95(optional)	145
Rated Current	A	630	630
Rated Breaking Current for Cable Charging	A	25	25
Rated Short Circuit Breaking Current	kA	25	25
Rated Short Circuit Making Current(Peak)	kA	630	630
Short Time Withstand Current (4s)	kA	25	25
Rated Peak Withstand Current (Peak)	kA	63	63
Mechanical Endurance	Operating Cycles	10000	10000
Rated SF6 Filling Pressure (Relative)	MPa	0.03	0.035
Protection Degree	IP67 for Gas Tank/ IP4X for Enclosureoutdoor enclosure IP54(optional)
Overall Dimensions(Width*Height*Depth) mm	340*1458*780

Production line