Application
The GW7 series is a robust outdoor high-voltage disconnecting switch widely used in power transmission and distribution systems.
Keystone
The GW7 outdoor high-voltage disconnector is a keystone component in power transmissionsystems due to its robust design, reliability, and adaptability.
Usual service condition
| Feature |
GW7 Advantage |
| Double-Break Contact System |
Ensures secure isolation by breaking the circuit at two points, reducing arc risks. |
| Horizontal Rotary Blades |
Smooth 90° rotation minimizes mechanical stress (2,000+ operations lifespan). |
| High Creepage Insulators |
Porcelain/composite options (≥3150 mm creepage) for polluted/humid environments. |
| Corrosion-Resistant Construction |
Hot-dip galvanized steel base withstands coastal/industrial atmospheres. |
| Flexible Drive Options |
Manual lever or motorized operation (AC/DC 110V/220V) for remote control. |
| Integrated Grounding Switch |
Optional grounding blades for safety discharge (compliant with IEC 62271-102). |
Main Specifications
Outdoor 3 Phase 3 pole double-side breaking Disconnector Switch(DS) 72.5KV 2500A
| Item |
PERORMANCE AND DESIGN CRITERIA |
UNIT |
DATE |
| |
Model |
|
GW7-72.5 |
| 1 |
Type of operation |
|
Three Pole operating |
| 2 |
Phase |
|
3 phase, 3 pole |
| 3 |
Earthing switch |
|
Not Integrated,single, double |
| 4 |
column per phase |
|
3 columns |
| 5 |
Minimum ambient temperature |
C |
0-45 |
| 6 |
Breaking method |
|
double side breaking |
| 7 |
Maximum ambient temperature |
C |
50 |
| 8 |
Maximum wind speed |
m/s |
45 |
| 9 |
Altitude above sea level |
m |
1000 |
| 10 |
Applicable standard |
|
IEC |
| 11 |
Rated voltage |
KV |
72.5 |
| 12 |
Rated lightning impulse withstand voltage |
KV |
325 |
| 13 |
Rated power frequency withstand voltage |
KV |
140 |
| 14 |
Rated frequency |
Hz |
50 or 60 |
| 15 |
Rated normal current |
A |
2500 |
| 16 |
Rated short-circuit |
KA |
31.5 |
| 17 |
Rated duration of sort-circuit current |
s |
1 |
| 18 |
Type of insulator |
|
Brown porcelain |
| 19 |
Creepage distance |
mm/K |
25 |
| 20 |
Type of Operating mechanism |
|
motor operated |
| 21 |
Motor and operating voltage |
VDC |
110 |
| 22 |
Heating element an lighting circuits |
VAC |
230 |
| 23 |
Number of auxiliary contacts |
|
8NO+8NC |
Services & Advantages & FAQ
Our Services
- OEM / ODM Manufacturing welcome: Product, Package...
- Sample order
- We will reply you for your inquiry in 24 hours.
- After sending, we will track the products for you once every two days, until you get the products.
- When you got the goods, test them, and give me a feedback.If you have any questions about the problem, contact with us, we will offer the solve way for you.
Our advantages
Nearly 30 years professional production experience
- Annual production capacity of 1 million
- Professional R&D team
- Certified : IS0 9001 & ISO14001 & OHSAS18001
- 80% reorder customers
- Best factory price
FAQ
Q 1. Are you a factory or trading company?
A.We are a factory.
Q 2. Where is your factory located? How can I visit there?
A. Our factory is located in Wenzhou City, Zhejiang Province, China. You can fly to Longwan airport directly. All our clients,from home or abroad, are warmly welcome to visit us!
Q 3. What's the payment term?
A. We accept TT, 30% deposit and 70% before shipment, Western Union, L/C At Sight is ok! We'll show you the photos of the products and packages before you pay the balance.
Q 4. Tell me the standard of package? What is your terms of packing?
A: Generally, we pack our goods in neutral white boxes and brown cartons. If you have legally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.
Q 5. Would you accept to use our logo ?
A. If you have good quantity,it absolute no problem to do OEM.
Q 6. How about the transport?
A. If the number of goods is small we usually use TNT,DHL,FEDEX,EMS and some express you offered. If the number of the goods is big usually we use the FWD you offered or we provided. Either by sea or by air is OK.
Q 7. What is your Production lead time / delivery time?
A: Generally, it will take 25 to 30 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.
Silicone rubber's regular product is 1,000/ week , Porcelain's need 2-3 weeks about 1000 pcs.
Q8. How do you make our business long-term and good relationship?
A:1. We keep good quality and competitive price to ensure our customers benefit ;
A: 2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.
A: 3.Most goods we have the type report according the IEC STANDARD
Q9. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the courier cost.
Q10. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.
Q11. What is your terms of delivery?
A: EXW, FOB, CFR, CIF.
Q12.What certificates do you have?
A:ISO9001,OHSAS18001,ISO14001 certificate and Type test report of product.
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