Home ꄲ Switchgear ꄲ Gas Insulated SF6 ring main unit switchgear 11kv Ring Main Unit

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Gas Insulated SF6 ring main unit switchgear 11kv Ring Main Unit

Indoor switchgear
SF6 Metal-Clad Enclosed Ring Main Unit
12 24 36KV，50/60Hz, 630、1250A
OEM & ODM,Complete equipment
Meet IEC standards
Send us your SLD (Single Line Drawing) or requirements ,we design switchgear plan for you

Product Introduction

General

This RMU switchgear using SF6 as arc extinguishing medium with double open contacts, 3 working-position and rotating contact which placed in an epoxy resin shell of a reinforced structure. Each gas box must pass helium leak detection before being filled with 0.045Mpa SF6 (Inspect any leakage to ensure can be installed vertically or horizontally). The classic installation is "horizontal", that is, install steel partitions between the cable compartment and the busbar compartment. That makes the interval between the busbar and the cable joint the most stringent safety requirements.

Standard

ISO 780-1997,MOD.
IEC 62271-102:2002,MOD
IEC 60265-1:1998,MOD
IEC 60298:1990
IEC 60529:1989
IEC 507:1991
IEC 60694:1996
IEC 60420:1990

Service environment

Air temperature: -35℃~+40℃
Humidity: Monthly average 95%; Daily average 90% .
Altitude :≤ 1000m (Up to 5000 m can be custom)
Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
No frequent violent shake

Technical Data

No.	Item	Unit	Parameter			Cabinet size
1	Rated voltage	kV	12		24	12kV
2	Rated frequency	Hz	50/60			Load switch cabinet	Low voltage compartment	Circuit breaker cabinet
3	Rated current	A	630/1250			mm	mm	mm
4	1min Power frequency withstand voltage	kV	Alternate/ Phase to ground	42	65	WDH	H	WDH
4	1min Power frequency withstand voltage	kV	Primary isolation	48	79	375/500/750 * 1000 * 1635/1885	350/450	800 * 1000 * 2000
5	Lightning impulse withstand voltage	kV	Alternate/ Phase to ground	75	125	24KV
5	Lightning impulse withstand voltage	kV	Primary isolation	85	145	Load switch cabinet	Low voltage compartment	Circuit breaker cabinet
6	Rated short circuit breaking current	KA	Main circuit	20	20	mm	mm	mm
6	Rated short circuit breaking current	KA	Ground loop	20	17.4	WDH	H	WDH
7	Rated short-circuit withstand current duration	S	4		4	600 * 1130 * 2000	710	800 * 1000 * 2000
8	Rated peak withstand current	kA	50		50	Optional components： Electric operating-AC 220/110V; DC 24/48/110/220V Auxiliary contact 5 NO 5 NC Full set of fuse FTU communication interface
9	Transfer current	A	1700		1200
10	Protection class		＞IP3X
11	Mechanical life of load switch		＞5000 times
12	Mechanical life of earthing switch		＞2000 times

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