Gw4a-40.5W Series Outdoor High/Medium Isolation Voltage AC Isolator Isolation Disconnect Load Break Switch Disconnectors

• Customization: Available
• Type: High-voltage
• Structure: Three-column Disconnector
• Model NO.: GW4A
• Operation: Electric
• Grounding Mode: Grounding
• Movement Mode: Horizontal Rotary Type
• Number of Poles: Three Pole
• Structure of Operating: Electric
• Certification: ISO
• Altitude: No More Than 1000m
• Ambient Temperature: -40 ºC-+45ºC
• Rated Frequency: 50Hz
• Creepage Distance: ≥372 (E - Level)mm
• Mechanical Life: 2000 Times
• Transport Package: Export Box
• Trademark: DGG
• Origin: China
• HS Code: 853530900
• Production Capacity: 10000PCS/Year
• Package Size: 60.00cm * 50.00cm * 35.00cm
• Package Gross Weight: 20.000kg
• Lead Time: 15 days (1 - 100 Pieces) ; To be negotiated ( > 100 Pieces)

Product Description

Our factory

We are professional manufacturer of current transformer ,voltage transformer, Vacuum Circuit Breakers/Recloser,Isolation switches,Dropout Fuse Cut-out,Lightning Arresters,High and Low Voltage Cabinets,Metering Devices,Power Distribution Transformers  etc.


General

GW4A-40.5 series improved outdoor high voltage AC disconnector (hereinafter referred to as "disconnector") 'it is an outdoor high-voltage switchgear with a rated frequency of 50Hz, which is used for switching 35kV line under voltage and no load, and for the electrical isolation of the overhauled high-voltage bus, circuit breaker and other electrical equipment from the live high-voltage line. It can also be used to close a very small capacitive current and inductive current.

The Isolation switch meets the technical standards of high voltage AC disconnectors and earthing switches (GB/T 1985-2014) and high voltage AC disconnectors and earthing switches (DL/T 486-2010).

Model And Meaning

Technical Parameters
 

No.	Item		Unit	Data
1	Rated Frequency		Hz	50
2	Rated Voltage		kV	40.5
3	Rated Current		A	630	1250	2000	2500	3150	4000
4 5	Rated Short-time Withstand Current  Rated Short-Time Withstand Current(Peak Value)		kA	20/4		31.5		40/50
				50/63		80		100/125
6	Rated short-time power frequency withstand voltage		kV/min	95/1 (Interphase, to earth, dry-type)
				118/1 (Interphase, to earth, dry-type)
				95/1 (Interphase, to earth, dry-wet)
7	Rated lightning impulse withstand voltage		kV	185 (Interphase, to earth)
				215 (Fracture)
8	Rated Short-Time Withstand Current Continuous Time		s	4 (Isolation Switch)			2 (Earthing Switch)
9	Circuit resistance		μΩ	≤100			≤80
10	Matching operating mechanism	Human Operational Mechanism		CS14G (Without Earthing Switch)
				Main force CS14G, grounding force CS11 (with single/double grounding switch)
		Motor Operational Mechanism		CJ6 type, motor voltage AC380V or DC220v, grounding voltage AC220V or DC220v, auxiliary contact 8 normally open and normally closed (standard configuration)
11	Mechanical life		Times	2000 (Isolation Switch/Earthing Switch)
12	Creepage distance		mm	≥372 (e - Level)
Note: If the altitude is over 1000m, the rated insulation level should be modified as appropriate.

Usage Environmental Conditions

1. Altitude: no more than 1000m. If the altitude is higher than 1000m, the rated insulation level shall be corrected accordingly.
2. Ambient temperature: upper limit + 45 ⁰C, lower limit - 40 ⁰C, average temperature of the hottest month 30 ⁰C, maximum daily temperature difference 25K.
3. Solar radiation intensity (outdoor): 0.1W/cm²
4. Wind speed / pressure (outdoor): 34m/s  /  700Pa
5. Pollution level: e-level
6. Icing thickness: not more than 20mm
7. Humidity: average daily relative humidity, not more than 95%, average monthly relative humidity not more than 80%
8. Earthquake resistance: horizontal acceleration 0.3m/², vertical acceleration 0.15m/s²
9. Safety factor: sinusoidal resonance three cycle wave, safety factor above 1.67.

Main Advantages

1. It adopts a perfect and improved design, no welding is required for installation, and the operation is simple and convenient.
2. It adopts double column middle opening and contact transfer in structure, which has the ability of automatic contact cleaning and strong operation reliability.
3. The contact finger uses high strength, high conductivity, and high elasticity materials, which can clamp the contact by relying on its own elasticity, avoiding the vicious cycle caused by the reduction of contact clamping force caused by spring corrosion and heating annealing, the increase of contact resistance and the intensification of contact heating.
4. The insulator is made of high-strength porcelain material and designed with a large creepage distance. It has strong pollution resistance and environmental adaptability and can meet the operation requirements in high-altitude areas.
5. The rotating part shall be designed according to maintenance-free requirements.

Outline And Installation Dimension

 

 

Test Reports
All products have undergone professional testing and certification.
Our Customer

Our customers are located all over the world.