High Voltage Vertical Break Disconnector and Isolator

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1. 145KV Disconnector and Isolator
2. KEMA test report
3. ISO quality certificate
4. Good quality and after-sales service

General introduction :

GW4-40.5/72.5/126/145/170/252 Ⅲ Series, two columns, horizontally rotating type, HV, AC, disconnector

Product classifications and Main Technical Specifications :

1), Product classification

Voltage level: 40.5kV, 72.5kV, 126kV, 145kV, 170kV, 252kV.

Current level: 630A,1250A, 2000A, 2500A,3150A, 4000A.

Auxiliary earthing switch type: none earthing switch, left earthing switch, right earthing switch, double earthing switches.

2), Main Technical Specifications

Technical Specifications	Product Type	GW4-40.5Ⅲ	GW4-72.5Ⅲ	GW4-126Ⅲ
Rated voltage kV		40.5	72.5	126
The rated current A		1250, 2000, 3150, 4000
Disconnector	Rated peak withstand current kA	100, 125
	Rated short-time withstand current (RMS)kA	40, 50
	Rated short circuit duration s	4, 3
Grounding switch	Rated peak withstand current kA	100, 125
	Rated short-time withstand current (RMS)kA	40, 50
	Rated short circuit duration s	4, 3
Rated short-time power frequency withstand voltage (RMS) kV	to earth	95	160	230
Rated short-time power frequency withstand voltage (RMS) kV	across open contacts	118	200	230+70
Rated lightning impulse withstand voltage (peak) kV	to earth	185	350	550
Rated lightning impulse withstand voltage (peak) kV	across open contacts	215	410	550+100
minimum clearance in 1 min power frequency withstand voltage when ground blade closing to live part of disconnector		53	94	164
rated terminal static mechanic load N	longitudinal level	1000	1000	1000, 1250
	Horizontal level	750	750	750
	Vertical force	1000	1000	1000
switching micro-capacitance current A		2	2	2
switching micro-inductance current A		1	1	1
switching busbar for current transfer A (busbar transfer voltage 100V)		400V, 2500A, 100 times
Radio interference level		less than 500 μV
Mechanical life		3000	3000	3000
single pole weight (kg)		120	200	260
Note: All applied to an altitude of 2000m

Technical Specifications		GW4-145Ⅲ	GW4-170Ⅲ	GW4-252Ⅲ
Rated voltage kV		145	170	252
The rated current A		1250, 2000, 3150, 4000
Disconnector	Rated peak withstand current kA	100, 125
	Rated short-time withstand current (RMS)kA	40, 50
	Rated short circuit duration s	4, 3
Grounding switch	Rated peak withstand current kA	100, 125
	Rated short-time withstand current (RMS)kA	40, 50
	Rated short circuit duration s	4, 3
Rated short-time power frequency withstand voltage (RMS) kV	to earth	275	325	460
Rated short-time power frequency withstand voltage (RMS) kV	across open contacts	315	375	460+145
Rated lightning impulse withstand voltage (peak) kV	to earth	650	750	1050
Rated lightning impulse withstand voltage (peak) kV	across open contacts	750	860	1050+200
minimum clearance in 1 min power frequency withstand voltage when ground blade closing to live part of disconnector		188	221	291
rated terminal static mechanic load N	longitudinal level	1000, 1250	1500	1500
	Horizontal level	750	1000	1000
	Vertical force	1250	1250	1250
switching micro-capacitance current A		2	2	2
switching micro-inductance current A		1	1	1
switching busbar for current transfer A (busbar transfer voltage 100V)		400V, 2500A, 100 times
Radio interference level		less than 500 μV
Mechanical life (times)		3000	3000	3000
single pole weight (kg)		300	326	900
Note: All applied to an altitude of 2000m

Q: What are the distribution network equipment: Electricity and other energy sources, its main features are: cannot be stored in large scale, power generation, transmission, distribution and consumption at the same instant

Q: DC transmission equipment: Simply put, DC screen is to provide stable DC power supply equipment.

Q: Transmission system and distribution system: Simply put, you can distinguish between the end of the cable to the use of electrical equipment (motor, power box) is the distribution system to the substation, transformer is the transmission system

Q: What is the difference between power supply and distribution: The two is the integration of power generation and power supply.

Q: What is the role of transmission system and distribution system in power grid: The distribution of power resources and power load centers in most countries in the world is inconsistent.

Q: Distribution system equipment classification: Mechanical equipment is made up of mechanism, power mechanism, transmission mechanism, actuator and control system

Q: High and low voltage distribution equipment: Low voltage distribution equipment: low voltage distribution panel, switch cabinet, switch board, lighting box, power box and motor control center.

Q: Transmission lines are not electrical equipment?: Transmission lines in the power transmission project belongs to the carrier, belonging to the power cable category, should not be called equipment

Q: Rural high voltage transmission line equipment ownership: You do not want to what the transformer behind the high-voltage line,

Q: CHINT group in the transmission and distribution equipment to do it?: The national grid is not purchasing some equipment of CHINT, CHINT group is now very powerful

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