Overview

GSRM6-40.5 33KV 36KV Series are a new type SF6 gas-insulated compact switchgears. Circuit breakers, disconnectors, and other parts are enclosed in 3mm-thick metal containers filled with a low-pressure SF6 gas. Thus, the equipment is compact, reliable, and safe; free of environmental impacts, free maintenance and long service life, etc.
GRM6-40.5 Series switchgears are suitable for control, protection and monitoring of 40.5 kV, three-phase, single busbar electrical system, widely used in generating companies, mining, etc.

Applicable Standars

IEC 62271-1：High-voltage switchgear and controlgear-Part 1: Common specifications
IEC 62271-100 :High-voltage switchgear and controlgear–Part 100: Alternating-current circuit-breakers
IEC 62271-102 High-voltage switchgear and controlgear–Part 102: Alternating current disconnectors and earthing switches
IEC 62271-103 High-voltage switchgear and controlgear–Part 103: Switches for rated voltages above 1 kV and up to and including 52 kV
IEC 62271-105 High-voltage switchgear and controlgear–Part 105: Alternating current switch-fuse combinations
IEC 62271-200：High-voltage switchgear and controlgear–Part 200: AC metal-enclosed switchgear and controlgear for rated voltage above 1kV and up to and including 52 kV
IEC 60044-2:Instrument transformers–Part 2: Inductive voltage transformers
IEC 60044-1:Instrument transformers–Part 1:Current transformers

Use Conditions

Altitude: ≤4000m★
Ambient air temperature: -25℃~+40℃;
Relative air humidity: daily average ≤95%, monthly average ≤90%;
Seismic intensity ≤8 class;
Places free from fire, explosion, serious contamination, chemical corrosion and severe vibration.
Note★: The manufacturer must be consulted in advance if site altitude is over 1000 m so as to adjust the inflation pressure.

Model meaning



Technical Parameters
 

No.	Descriptions				Unit	Value
1	Rated voltage				kV	33  36  40.5
2	Rated frequency				Hz	50 60
3	Rated continuous current				A	630  1250
4	Rated insulation level (Ud, Up, )	Power frequency withstand voltage(Ud) (1min)		Between phase and phase to earth	kV	95
				Across the isolating distance	kV	118
				Auxiliary and control circuits (Ua)	kV	2
		Lightning impulse withstand voltage (Up)		Between phase and phase to earth	kV	185
				Across the isolating distance	kV	215
5	Rated short-time withstand current (Ik/tk)				kA/s	25/4 , 31.5/4
6	Rated peak withstand current (Ip)				kA	63, 80
7	Rated short-circuit breaking current (Isc)				kA	25, 31.5
8	Rated short-circuit making current				kA	63, 80
9	Circuit breaker electrical endurance				/	30 times
10	Rated operating sequence.				/	O-0.3s-CO-180s-CO
11	Mechanical endurance		Circuit breaker		Ops	20000
			Disconnectors/Earthing switches		Ops	5000
12	Resistance of the circuit		630A		μΩ	≤120
			1250A		μΩ	≤80
13	Rated gas- filled pressure (the pressure at 20 °C)				MPa	0.02
14	Annual leakage rate (relative pressure)				/	≤0.01%
15	Isolation medium				/	SF6
16	Degree of protection (IP)		Isolation medium		/	IP2XC
			Gas tank		/	IP67
			Enclosure		/	IP41
			Enclosure		/	IK10
17	Classification IAC and Internal IAC				/	A-FLR , 31.5 kA 1s

Outline dimension