Gw4 Type 72.5kv 245kv Isolation Switch Outdoor High Voltage Disconnector Without Grounding Knife

• Customization: Available
• Type: High-voltage
• Structure: Double-column Disconnector
• Model NO.: GW4
• Operation: Electric
• Grounding Mode: Grounding
• Movement Mode: Vertical Rotary Type
• Number of Poles: Three Pole
• Grounding: Double Ground
• Series: Three
• Run: Turn the Horizontal
• Structure of Operating: Electric
• Rated Voltage Kv: 72.5T123T145T245
• Rated Current a: 1250 1600 2000 2500 3150 4000
• Transport Package: Plywood Box
• Specification: GW4-Customizable
• Trademark: HZEC
• Origin: China
• Production Capacity: 30000cover/Years

Product Description

Product Description

         Center- breaker disconnectors GW4(up to 245kV)
  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 252kV. 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 (40.5~252 kV)

Item		Technical parameter
Rated Voltage                 kV		72.5	123	145	245
Rated Current                 A		125016002000250031504000
Rated Short Time withstand current and Time               kA/s		25~50/4
Rated Peak withstand current kA		63~125
1min power frequency withstand voltage (effective value)kV	To earth	140	230	275	460
	To phase	140	230	275	460
	Across Isolating DS	180	300	315	605
Lightning Impulse wishstand voltage (peak  value)  kV	To earth	325	550	650	1050
	To phase	325	550	650	1050
	Across Isolating DS	405	650	750	1200
Rated mechanical terminal load     N	Level of lateral load	750	1500	1500	2000
	Level of vertical load	500	1000	1000	1500
	Vertical	750	1000	1000	1250
Max Man Operative Moment N.M		200
Motor Drive operating mechanism control voltage             V		AC220;DC110,220
Motor Drive operating mechanism motor voltage                  V		AC220,380;DC110,220

 

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