10kV SF6 Gas Insulated RMU

Modular and expandable	The use of expansion modules in coordination allows for up to five modules with the same gas tank. Beyond that, further expansion is achieved through busbar expansion.
Maintenance Free	SF6 gas integrated structure, with moving and static contacts, arc extinguishing chamber, busbar sealed in the same gas tank. It is designed for a maintenance-free life of 30 years.
Reliable Mechanical Interlock	It has a variety of reliable mechanical interlocks, and there are analog signs on the cabinet panel to fully ensure the safety of operation.
Automatic and Intelligent	Cooperate with DTU to realize automatic and intelligent control.

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Detail

Place of Origin	China
Insulation Method	Gas Insulated
Voltage Level	10kV
Highlight	10kV gas insulated ring main unit, SF6 gas insulated ring main unit, rmu switchgear

S/N	Name		Unit	parameters
1	Rated voltage		kV	12
2	Rated frequency		Hz	50
3	Rated current		A	630/1250
4	Rated short-time power frequency withstand voltage	Phase-to-phase and Phase-to-earth	kV	42
		Across isolating distance	kV	48
5	Rated lightning impulse withstand voltage	Phase-to-phase and Phase-to-earth	kV	75
		Across isolating distance	kV	85
6	Rated peak withstand current		kA	50
7	Rated short-time withstand current		kA	20
8	Rated short circuit duration		s	4
9	Rated short circuit breaking current		kA	/
10	Closing current (peak)		kA	50
12	gas rated pressure (20℃)		MPa	0.04
13	annual gas leakage rate		%	≤0.05
14	Mechanical endurance for circuit breaker		Time(s)	10000
15	Mechanical endurance for load switch		Time(s)	/
16	Mechanical endurance for isolating switch		Time (s)	5000
17	Mechanical endurance for grounding switch		Time (s)	3000
18	Gas tank protection degree		/	IP67
19	Shell protection degree		/	IP4X

Ring main unit is a SF6 gas insulated metal enclosed switchgear independently developed and produced by our company. The equipment uses SF6 gas as insulation and breaking medium, and the load switch, vacuum circuit breaker and live busbar are all sealed in a closed stainless steel container filled with a certain pressure. The external American standard / European standard bushing is connected with the incoming and outgoing cable through the cable joint to form a fully insulated and fully closed structure. This effectively prevents flooding and withstands contamination, making it suitable for various harsh environments. The product is widely used in 12kV ring network or terminal power supply system.