GLX-24 Series SF6 Insulated Ring Main Unit

1.air temperature: maximum temperature :+40oC;minimum temperature:-35oC 2.humidity: monthly average humidity 95%; daily average humidity 90% 3.altitude above sea level: maximum installation altitude: 2500m 4.ambient air not apparently polluted by

Published in2018-09-01

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Product Description

GLX24 series Ring Main Unit is an extensible, SF6 insulated switchgear, with rated voltage of 12/24&36 KV.??GLX24 unit type SF6 ring net cabinet with SF6 load switch as main switch, for whole cabinet is suitable for electric distribution automation and compact also expandable metal close switchgear. It characters in its simple structure, flexible operation, reliable interlocking and convenient installation etc, which can provide the satisfactory technical projects both for different application occasions and user. With the adoption of sensor technology and the protection relay up to date, plus the advanced technology and flexible assembly project, GLX24 unit type SF6 ring net cabinet can completely meet the requirement of continuously variable market. It can take self-produced RLS-40.5 load switch or SFG type SF6 load switch by ABB; also according to user's demand can be assembled with the internationally top-ranking, RCB series vacuum circuit breaker with permanent magnetic mechanism made by AREVA,or HD4 type SF6 circuit breaker made by AREVA, or HD4 type SF6 circuit breaker made by ABB, or with our VS1-12 type vacuum circuit breaker with permanent magnetic mechanism. Operational methods for the main switch inside ring main unit can be either manual electric power driven. And it can meet the requirement of "four controls" when matched with FTU and RTU.

Service environment:
1.air temperature: maximum temperature :+40oC;minimum temperature:-35oC

2.humidity: monthly average humidity 95%; daily average humidity 90%

3.altitude above sea level: maximum installation altitude: 2500m

4.ambient air not apparently polluted by corrosive and flammable gas, vapor etc.

5.no frequent violent shake.

Technical parameters

Table 1: Technical data for 12KV Ring Main Unit

Description		Unit	LBS unit	Switch-fuse unit	VCB unit	Busbar subsection unit
Rated voltage		KV	12	12	12	12
Power frequency withstand voltage(1 min)	phase to ? phase/earth	KV	42	42	42	42
Power frequency withstand voltage(1 min)	Across the isolating distance	KV	48	48	48	48
Impulse withstand voltage	phase to ? phase/earth	KV	75,(95)*	75,(95)*	75,(95)*	75,(95)*
Impulse withstand voltage	Across the isolating distance	KV	85,(110)*	85,(110)*	85,(110)*	85,(110)*
Rated frequency		Hz	50,60	50,60	50,60	50,60
Rated current		A	630	1	630	630
Rated short circuit breaking current		KA		2	20,(25)*
Rated short time withstand current		KA/s	20/3 (20/4,25/1)*		20/3 (20/4,25/3)*	20/3 (20/4,25/1)*
Rated peak withstand current		KA	50,(63)*		50,(63)*	50,(63)*
Rated short circuit making current		KA	50,(63)*	2	50,(63)*	50,(63)*
Rated transfer current		A		1800
Rated active load breaking current		A	630			630
Rated closed loop breaking current		A	630			630
5% raed active load braeking current		A	31.5			31.5
Rated operation sequence					0-0. 3s-CO-180s-CO
Mechnical lifetime		Ops	5000	5000	10000	5000
Eletrical?lifetime			E3		E2	E3
Thickness of stainless steel		mm	3.0
Rated SF6 pressure		kPa	30(at 20oC,101.3kPa)
Annual leakage rate		≤0.02%
Water treatment test		12kV 24 hours(at 30 kPa under the water
Internal arc test		20kA 1s
Protection degree		Gas tank	IP 67
		Fuse holder	IP 67
		RMU enclosure	IP 4%

Table 2: Technical data for 24KV/36KV Ring Main Unit

NO.	Item		Unit	Parameter
1	Rated voltage		KV	24	36
2	Rated frequency		HZ	50/60
3	Rated current		A	630/800
4	1 min power frequency withstand voltage	Wet	KV	70	95
		dry	KV	80	110
5	Lightning impulse withstand voltage		KV	170	185
6	Rated short circuit breaking current (peak)		KA	195	215
7	Rated active load and close circuit breaking current		A	400/630
8	Rated transferring current		A	1200	1000
9	Rated short circuit making current(peak)		KA	63	63
10	Rated cable off load		A	50
11	Transformer off load		A	16
12	Rated withstand current (peak)		KA	63
13	Short time withstand current(2s)		KA	25
14	Mechanism life		times	2000	2000

Structure

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GLX-24 Series SF6 Insulated Ring Main Unit

Detailed description