11kv, 12kv, 24kv 36kv Mv Cubicle Switchgear

• Certification: CCC, ISO9001
• Shell Material: Stainless Steel
• Voltage Level: Medium Voltage
• Installation: Removable
• Structure: Floorstanding
• Current: AC
• Model NO.: GSM, GRM
• Transport Package: Wooden Case
• Specification: Phase distance: 210mm
• Trademark: GRENO
• Origin: Xiamen, China
• Production Capacity: 5000PCS/Year

Product Description

11kv, 12kv, 24kv 36kv Mv Cubicle Switchgear

Product Description
GSM serie SF6 RMU 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 users.
It can completely and continuously meet the requirement of variable market.
The GRM type SF6 gas insulated RMU is a compact metal sealing device that adopts modular design, perfect integration of fixation and flexible expansion, to meet the requirements of end users or network nodes, meet various switch distribution needs, and meet the needs of box type substations and cable branch boxes. Compact structure, safe and reliable, long service life, and low maintenance.

Service enviromenet:
a) Air temperature: Maximum temperature: +40ºC; Minimum temperature:-25ºC
b) Humidity: Monthly average humidity 95%; Daily average humidity 90% .
c) Altitude above sea level: Maximum installation altitude: 2000m
d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
e) No frequent violent shake

Units for all functions:
1. Incoming unit with switch disconnector(Load break switch) schemas with other extra components optional
2. Outgoing unit with Fuse-switch protection schemas with other extra components optional
3.Incoming/outgoing circuit breaker protection schemas with other extra components optional
4. MV metering schemas with other extra components optional
5. Casings (Bus bar Panel) schemas with other extra components optional

Technical Specification
GSM

Item		Unit	Parameters
Rated voltage		KV	12	24
Rated frequency		Hz	50
Rated current		A	630/1250
Rated load breaking current		A	630
Rated short time withstand current (effective value)		A	20/31.5
Rated short circuit duration		S	3
Rated short circuit making current		KA	50
Rated peak withstand current		KA	50
Rated cable charging breaking current		A	10
Rated active load and close circuit breaking current		A	630
MAX transfer current		A	1750
Earthing switch short time withstand current (2s)		KA	17.4/20
Rated current breaking times		Times	≥10
Load break switch mechanical life		Times	≥5000
Earthing switch mechanical life		Times	≥2000
1 min power frequency withstand voltage	Common value	KV	42	55
	Across insulate distance	KV	48	65
Lightning impulse withstand voltage	Common value	KV	75	125/150
	Across insulate distance	KV	85	150/160
Operating mechanism			Manual or motor
Operating voltage		V	AC/DC 220/110, DC48/24
Protection degree			IP3X

GRM

Item NO.	Name		Unit	Technical parameters
				GRM-C	GRM-F	GRM-V
1	Rated Voltage Un		kV	24		24
2	Rated Frequency		Hz	50		50
3	Rated Current		A	630	125	630
4	Rated Load Breaking Current		A	630	125
5	Rated Short Time Withstand Current(rms)		kA	20		20
6	Rated Short Time Duration		s	3		3
7	Rated Peak Withstand Current		kA	50		50
8	Rated Closed Switch - Off Current		A	630
9	Rated Cable Charging Breaking Current		A	10		25
10	Rated Active Load Breaking Current		A	630
11	Max. Transfer Current		A		1750
12	Expected Fuse Short-Circuit Breaking Current(rms)		kA		50
13	Earthing Switch 2s Short Time Withstand Current		kA	20		20
14	Rated Short-Circuit Current Making Times		Times	2
15	Rated Current Breaking Times		Times	10
16	Mechanical Endurance	Load Break Switch	Times	5000
		Earthing Switch	Times	2000		2000
		Disconnector	Times			3000
		Circuit Breaker	Times			10000
17	SF6 gas anual leakage rate			≤1%/Y
18	Rated Insulation Level		Unit	Technical parameters
	1min Power Frequency withstand voltage(rms)	On isolating distance	kV	60
		Phase to Phase	kV	50
		Phase to Earth	kV	50
	Lightning impulse withstand voltage(peak)	On isolating distance	kV	145
		Phase to Phase	kV	125
		Phase to Earth	kV	125
21	optional :Motorised Operating Mechanism- voltage		V	DC24,DC48,DC110,DC220,AC220