Gw7e-252 Outdoor Three Phase High Voltage AC Isolating Switch

• Customization: Available
• Type: High-voltage
• Structure: Single-column Disconnector
• Model NO.: GW
• Installation: Outdoor High-voltage
• Operation: Manual
• Grounding Mode: Grounding
• Movement Mode: Vertical Rotary Type
• Number of Poles: Unipolar
• Grounding: Single Ground
• Series: Two
• Run: Vertical Rotation
• Switching Mode: Single Throw-in
• Structure of Operating: Manual
• Certification: CE, IS9001, ISO9001
• Rated Voltage: 252kv
• Language: Chinese, English, Russian
• Price: Negotiable
• Rated Current: 5000A
• Loading Port: It Depends
• Transport Package: Cartons or Others
• Specification: As required
• Trademark: HEZC
• Origin: China
• Production Capacity: 50000pieces/Year

Product Description

 

Company Profile

Henan Energy Electric Equipment Co., Ltd. was established in 2011 and is an excellent and reliable power equipment manufacturer in China. The company mainly develops and produces oil-immersed transformers, dry-type transformers, box-type substations, high-voltage switches, and medium and low voltage complete sets of equipment. The equipment put into production and operation of the project advocates energy saving, intelligence, informatization, and mechanization. The company has established the Henan Triangle Energy-saving Transformer Engineering Technology Research Center, with 71 utility model patents and 15 invention patents. With years of accumulation in the transformer industry and strong technological innovation capabilities, HZEC products are sold to the Middle East, North America, South America, Europe, Southeast Asia, Africa, and other regions, covering more than 40 countries.

GW7E-252 isolation switch is a three-phase AC 50Hz outdoor high-voltage AC electrical appliance, used for rated voltage 220kV power system, for high-voltage lines in the no-load situation to switch lines and maintenance of high-voltage bus, circuit breakers and other electrical equipment and live high-voltage lines for electrical isolation. It provides the inspected equipment and maintenance personnel with a visible insulation distance that meets the requirements to ensure the safety of maintenance personnel.
It complies with GB1985 and IEC62271-102 standards.
 

Product Parameters

Item						Unit	Parameter
Rated voltage						kV	252
Rated current						A	5000
Rated peak withstand current (peak)						kA	160
3s rated short-time withstand current (valid)						kA	63
Rated frequency						Hz	50
Earthing switch	Rated peak withstand current (peak) 3s Rated short-time withstand current (valid)					kA  kA	160 63
Longitudinal						N	1500
Rated tension of terminals                                          Horizontal						N	1000
Vertical						N	1250
Rated insulation level		Rated short-time power frequency withstand voltage (valid)			Grounding	kV	460
					Fracture	kV	460+145
		Lightening impulse withstand voltage (peak)			Grounding	kV	1050
					Fracture	kV	1050+200
Electromagnetic coupling Ground switch induction current				Rated induced current Rated induced voltage		A    kV	80  2
opening and closing ability test			Electrostatic coupling	Rated induced current Rated induced voltage		A    kV	3 12
III                    Creepage ratio of post insulator                                              IV						mm/kV	25 31
Mechanical life						Time	3000
Isolating switch circuit resistor						μΩ	85
Switching busbar converts current						A	1600
Unipolar weight						kg	1020

Structure Diagram

  GW7E-252 IIDW Isolation Switch
  

Product Features

1. Large fracture distance, excellent performance, reliable operation.
2. Simple structure, convenient installation and adjustment.
3. The static contact pressure is large, the flow performance is good, and the ability is strong.
4. Contacts and contacts have good self-cleaning function and low operating cost.
5. Good overall structural stability.
6. The surface is hot-dip galvanized with good anti-corrosion properties.

Service Environment

1. 1. Altitude does not exceed 2000m
2. Ambient temperature: -40ºC~+40ºC
3. Maximum wind speed: 34m/s
4. Earthquake resistance: horizontal acceleration: 0.250g
                                              Vertical acceleration: 0.125g
5. The ice thickness shall not exceed: 10mm
6. Insulator pollution level: III(25mm/kV), IV(31mm/kV)
7. The installation site is free of inflammable, explosive, chemical corrosion and other harmful substances, and there should be no frequent and violent vibration.

Ordering Instructions

Please specify the following items when ordering:
1. Isolation switch model and specification.
2. Rated current, rated short time and peak withstand current.
3. Anti-pollution level, altitude.
4. Please indicate whether to install a ground knife, which side to install a ground knife, and whether to install a magnetic lock.
5. Motor voltage, control voltage, auxiliary switch pole number of electric actuator.
6. If there are any special requirements, please explain in advance to avoid mistakes in delivery.

Packaging & Shipping

Certifications