40.5kV Ring Main Unit

Product Detail

XD Baoji Electric Co.,Ltd is one of the leading China 40.5kv ring main unit manufacturers and suppliers, as a professional company, our factory is able to produce quality 40.5kV RMU, 40.5kv ring main unit products at competitive price.

 Product Description
       XGN86-40.5 series Gas Filling RMU is three-phase A.C 50Hz indoor complete distributing equipment with the voltage range 40.5kV. It is used for secondary power distribution system, such as plant, wind power plant (Inside the tower), urban rail transit and metro to receive and distribute power. 
       The structure of this RMU is metal enclosed, cubical fixed, the gas-filled compartment of the RMU is made of stainless steel by way of laser welding. It can be equipped with load switch, load switch-fuse combination electric equipment, disconnector and circuit breaker. The wrong operation can be avoided due to its function of the ‘FIVE PROVENTION’. It can meet the standard requirments of IEC62271-200?IEC62271-103?IEC62271-105?IEC62271-1?GB3906?GB/T11022?GB3804? GB16926 etc.
       Overall dimension (W×D×H mm):450×950×1910.
Features of Product
       Altitude above sea level 1000m and below.
       Current rating up to 630 A/20kA.
        Internal arc classified (IAC):AFLR,20kA/0.5s.
       Equipped with load switch, load switch-fuse combination electric equipment, disconnector and circuit breaker.
       The internal barriers are made up of steel plate, and the loss of service continuity category (LSC) can meet the requirments of LSC2B.
       The gas-filled compartment is made of stainless steel sheet by way of laser welding, test by the helium leak detection, with good seal.
       Plug-in solid insulation busbar coupler between the cabinets, with simple in switchgear installation and expansion.
        Internal or external cone cable plug with simple and fast installation.
       On line monitoring of gas density function. 
       Design for wind power plant (Inside the tower), small size meet the requirments of the door of the tower.
Technical Parameters

Item		Unit	Data
			load switch unit	load switch-fuse combination unit	circuit breaker unit
Rated voltage		kV	40.5
Rated current		A	630	40	630
Rated frequency		Hz	50
Rated short circuit breaking current		kA	/	31.5	20
Rated transfer current		kA	/	1000	/
Rated Short-time withstand current	Main circuit	kA/4s	20	/	20
	Earthing switch	kA/2s	20	/	20
	Earthing connect circuit	kA/2s	17.4	/	17.4
Rated peak withstand current	Main circuit	kA	50	/	50
	Earthing switch	kA	50	/	50
	Earthing connect circuit	kA	43.5	/	43.5
Degree of protection	Enclosure	IP4X
	Gas-filled compartment	IP67
Rated insulation level	Rated power-frequency withstand voltage	kV/1min	95
	Rated lightning impulse withstand voltage	kV	185
IAC	Fault current	kA	20
	Duration	s	0.5
SF6 gas rated pressure (rel-20?)		MPa	0.04
SF6 gas alarm pressure (rel-20?)		MPa	0.02