Gw4 145 Kv Outdoor AC High Voltage Isolator Switch Double Grounding Disconnector

Product Description

Product Description

         Center- breaker disconnectors GW4(up to 252kV)
  The GW4 series outdoor high-voltage AC disconnect switch is a three-phase, 50Hz outdoor high-voltage device used in power systems with rated voltages of 35 to 220kV. It is used for switching operations without load and for electrically isolating equipment under maintenance from live circuits.
     
Main Features
Simple structure, excellent performance, and reliable operation.
Adopts a self-actuating contact structure with high reliability. The contact pressure remains constant during operation, requiring no inspection or adjustment. Good self-cleaning capability. Automatically increases contact pressure when passing short-circuit current. Features an anti-corrosion design with excellent rust resistance. The overall structure has good stability. Easy to install and adjust.
 

Structure:
 The GW4 series outdoor AC high voltage isolating switch is a double-column, horizontally rotating center-break isolating switch. The main current-carrying parts of the main knife switch are primarily made of aluminum alloy. The connection between the terminal and the aluminum alloy parts is ensured by copper braided wire. The terminal can freely rotate 90 degrees to ensure a flexible connection with the terminal.

This product comes in three specifications: non-grounded, single-grounded, and double-grounded. The isolating switch can be equipped with either a manual operating mechanism or a motor operating mechanism. The grounding switch can be equipped with a manual operating mechanism and a motor operating mechanism.

 

Application: In rated voltage 40.5~252kV power system, to separating the circuits under off-load status, set  up air electrical clearning between the tested electrical apparatuses and electrified circuit.

Standards:  IEC 62271-102

Parameters: Rated voltage: 40.5-252kV.
                       Rated current: 1250-4000A.    
                       Rated short time withstand current, 3s: 50kA.

Features:     1.Outstanding performances and reliable operation.
                      2.Free  maintenance due to its stable contact pressure and self-cleaning capability.
                      3.High anticorrosion capability.
                      4.Easy installation and adjustment.

Detailed Photos

 

 

 

Product Parameters

GW4 Series Outdoor AC High Voltage Isolating Switch Typical Technical Parameters (40.5 kV)

Project	Description
(Rated Voltage	40.5kV
Rated Current	2000A
Rated Peak Withstand Current	100kA
3s Rated Short-time Withstand Current Effective Value	40kA
Rated Frequency	50Hz
Terminal Rated Tensile Force	Longitudinal	750N
	Horizontal	400N
	Vertical	500N
Rated Insulation Level	Rated Short-time Power Frequency Withstand Voltage Effective Value		To Ground	95kV
			Across the Break	110kV
	Lightning Impulse Withstand Voltage Peak Value		To Ground	185kV
			Across the Break	215kV
Support Insulator Creepage Ratio	III		25mm/kV
	IV		31mm/kV
Support Insulator Anti-bending Breaking Load	4000N
Mechanical Life	3000Times
Single Hit Weight	80kg
Opening and Closing Switching Current	-
Ground Switch Inductive Current Switching Capability Test	Electromagnetic Compatibility		-
	Static Compatibility		-

GW4 Series Outdoor AC High Voltage Isolating Switch Typical Technical Parameters (126 kV)

Project	Description
Rated Voltage	126kV
Rated Current	2000A
Rated Peak Withstand Current	100kA
3s Rated Short-time Withstand Current Effective Value	40kA
Rated Frequency	50Hz
Terminal Rated Tensile Force	Longitudinal	1000N
	Horizontal	750N
	Vertical	1000N
Rated Insulation Level	Rated Short-time Power Frequency Withstand Voltage Effective Value		To Ground	230kV
			Across the Break	230+70kV
	Lightning Impulse Withstand Voltage Peak Value		To Ground	550kV
			Across the Break	550+100kV
Support Insulator Creepage Ratio	III		25mm/kV
	IV		31mm/kV
Support Insulator Anti-bending Breaking Load	6000N
Mechanical Life	3000Times
Single Hit Weight	240kg
Opening and Closing Switching Current	1600
Ground Switch Inductive Current Switching Capability Test	Electromagnetic Compatibility		Rated Inductive Current:50A
			Rated Inductive Voltage:0.5kV
	Static Compatibility		Rated Inductive Current:0.4A
			Rated Inductive Voltage:3kV

GW4 Series Outdoor AC High Voltage Isolating Switch Typical Technical Parameters (145 kV)

Project	Description
Rated Voltage	145kV
Rated Current	2000A
Rated Peak Withstand Current	100kA
3s Rated Short-time Withstand Current Effective Value	40kA
Rated Frequency	50Hz
Terminal Rated Tensile Force	Longitudinal	1000N
	Horizontal	750N
	Vertical	1000N
Rated Insulation Level	Rated Short-time Power Frequency Withstand Voltage Effective Value		To Ground	275kV
			Across the Break	315kV
	Lightning Impulse Withstand Voltage Peak Value		To Ground	650kV
			Across the Break	750kV
Support Insulator Creepage Ratio	III		25mm/kV
	IV		31mm/kV
Support Insulator Anti-bending Breaking Load	6000N
Mechanical Life	3000Times
Single Hit Weight	300kg
Opening and Closing Switching Current	1600
Ground Switch Inductive Current Switching Capability Test	Electromagnetic Compatibility		Rated Inductive Current:80A
			Rated Inductive Voltage:2kV
	Static Compatibility		Rated Inductive Current:2A
			Rated Inductive Voltage:6kV

GW4 Series Outdoor AC High Voltage Isolating Switch Typical Technical Parameters (252 kV)

Project	Description
Rated Voltage	252kV
Rated Current	3150A
Rated Peak Withstand Current	125kA
3s Rated Short-time Withstand Current Effective Value	50kA
Rated Frequency	50Hz
Terminal Rated Tensile Force	Longitudinal	1500N
	Horizontal	1000N
	Vertical	1000N/1250N
Rated Insulation Level	Rated Short-time Power Frequency Withstand Voltage Effective Value		To Ground	460kV
			Across the Break	460+145kV
	Lightning Impulse Withstand Voltage Peak Value		To Ground	1050V
			Across the Break	1050+200kV
Support Insulator Creepage Ratio	III		25mm/kV
	IV		31mm/kV
Support Insulator Anti-bending Breaking Load	8000N
Mechanical Life	3000Times
Single Hit Weight	650kg
Opening and Closing Switching Current	1600
Ground Switch Inductive Current Switching Capability Test	Electromagnetic Compatibility		Rated Inductive Current:80A
			Rated Inductive Voltage:1.4kV
	Static Compatibility		Rated Inductive Current:1.25A
			Rated Inductive Voltage:5kV

Operating environment

• Altitude does not exceed: 2000m
• Ambient temperature: -40°C ~ +40°C
• Maximum wind speed: 34m/s
• Earthquake resistance: Horizontal acceleration: 0.250g, Vertical acceleration: 0.125g
• Maximum ice thickness: 10mm
• Insulation contamination level: III (25mm/kV), IV (31mm/kV)
• Installation site should be free of easily flammable, explosive, and chemically corrosive substances, and should not be subject to frequent and severe vibrations.

 

Installation Instructions

 

Working Principle:
During closing, the double columns rotate inward simultaneously, and the contact fingers engage with the contact seats. During opening, the double columns rotate outward simultaneously, and after the contact fingers disengage from the contact seats, they continue to rotate to 90 degrees and stop, forming a clear and noticeable isolation break. When the grounding switch is closed, the grounding contact rotates upward at an angle. After the movable and stationary contacts engage, the movable contact moves upward and inserts into the stationary contact, completing the closing action. The opening process is the reverse of this.

Packaging & Shipping

 

 

 

After Sales Service

1.Our company provides you with project design and process design, and designs and manufactures products according to your equipment purchase plan and specific needs. We have train technical and operating personnel for you.

2.The newly purchased products are provided with online assistance for installation and debugging. The products are under the lifelong service system. If problems occur in normal use, we will provide solutions within one working day after receiving user's feedback. We will try our best to get the product up and running as soon as possible. And there are regular visits by professional technicians to ensure the long-term, safe and reliable use of our products.

3.We use quality authentic materials, process and manufacture in strict compliance with ISO9001:2000 international quality management to ensure the quality of excellence and the smooth installation!
 

FAQ