Product Description
Product Description
Specifications
AC HV Disconnect Switch
1. Rated Voltage: 12kV
2. Operable at Three-Phase AC 50/60Hz
AC HV Disconnect Switch
•Summary:
1. The GN30-12(D) Disconnect Switch is an indoor electric apparatus with a rated voltage of 12kV, suitable for three-phase AC 50/60Hz applications.
2. This switch is designed to make, break, and transfer current for high-voltage electric apparatus, specifically in scenarios with voltage but no load.
3. It utilizes a rotary moving contact for seamless operation, easily mounted on switchgear.
4. Additionally, it supports wall-through installation for enhanced versatility.
In the realm of electrical engineering, a disconnector—also known as a disconnect switch or isolator switch—plays a crucial role in ensuring that an electrical circuit is fully de-energized for the safe conduct of service or maintenance. Primarily, these switches are tasked with breaking the circuit and are commonly employed in electrical distribution systems and substations, where the machinery's driving power source needs removal for adjustments or repairs. Disconnectors may be operated manually or by motors, often integrated with earthing switches to ground the isolated section, ensuring equipment and personnel safety. High-voltage isolation switches, in particular, are instrumental in electrical substations, facilitating the isolation of key apparatus such as circuit breakers, transformers, and transmission lines for maintenance activities. While they are not intended for routine circuit control, they serve as vital safety isolation tools. Unlike load switches and circuit breakers, disconnectors do not incorporate an electric arc suppression mechanism, which occurs during the interruption of conductors carrying high currents. As such, they function as off-load devices with minimal breaking capacity, intended to be opened only after current interruption by another control device.
Product Parameters
| Technical parameter |
|
|
|
|
| Model |
Rated voltage (kV) |
Rated current |
Rated short-time withstand current |
Rated peak withstand current |
| (A) |
(kA/4s) |
(kA) |
| GN19-12/400-12.5 |
12 |
400 |
12.5 |
31.5 |
| GN19-12/630-20 |
12 |
630 |
20 |
50 |
| GN19-12/1000-31.5 |
12 |
1000 |
31.5 |
80 |
| GN19-12/1250-31.5 |
12 |
1250 |
31.5 |
80 |
| GN19-12C/400-12.5 |
12 |
400 |
12.5 |
31.5 |
| GN19-12C/630-20 |
12 |
630 |
20 |
50 |
| GN19-12C/1000-31.5 |
12 |
1000 |
31.5 |
80 |
| GN19-12C/1250-31.5 |
12 |
1250 |
31.5 |
80 |
| PARAMETERS |
|
|
|
| No. |
ITEM |
UNIT |
VALUE |
| 1 |
Rated voltage |
KV |
12/40.5 |
| 2 |
Rated frequency |
HZ |
50 |
| 3 |
Rated current |
A |
630/1250 |
| 4 |
Rated breaking current for rated active load |
A |
630/1250 |
| 5 |
Rated closing current |
A |
630/1250 |
| 6 |
5% rated breaking current for rated active load |
A |
62.5 |
| 7 |
Rated cable charging breaking current |
A |
25 |
| 8 |
1 min Power frequency withstand voltage: vacuum interrupter, same relative to ground, isolated interrupter |
KV |
42/68/95/110 |
| 9 |
Lightning impulse withstand voltage: phase-to-phase relative to ground/isolated interrupter |
KV |
75/125/185/215 |
| 10 |
Rated short-time withstand current (thermal stability) |
KA |
25 |
| 11 |
Rated short-circuit duration |
5 |
4 |
| 12 |
Rated peak withstand current (dynamic stability) |
KA |
63 |
| 13 |
Rated short-circuit closing current |
KA |
63 |
| 14 |
Mechanical life |
|
10000 |
| 15 |
Allowable wear thickness of vacuum arc-extinguishing chamber contact |
mm |
0.6 |
| 16 |
Manual operating torque |
Nm |
≤300 |
Company Profile
Zhejiang Chaotai Complete Equipment Co., Ltd. is a premier high-tech enterprise deeply invested in electrical integration, boasting a formidable R&D, production, and service team with over 15 years of esteemed industry experience.
Our flagship offerings include high-voltage solid-state soft starters, capacitor cabinets, as well as high and low voltage switchgear, gas-insulated switchgear, and substations. These exceptional products find extensive applications across various sectors such as energy, chemical processing, metal smelting, electrical power grids, industrial manufacturing, educational institutions, medical and pharmaceutical domains, municipal commerce, water conservancy, hydropower, road transportation, and both commercial and residential areas.
We are unwavering in our commitment to technological advancement and the philosophy of "smart manufacturing," continuously integrating top-tier technical talent to bolster the company's core competitiveness. This dedication enables us to deliver unparalleled value to our customers as we strive to establish the industry's leading brand. Since our inception, we have consistently forged ahead, transforming from nonexistence to prominence, and progressing from good to exceptional. Our guiding principles are rooted in innovation, prioritizing quality for survival, adopting a market-driven approach, cultivating reputation-driven development, and achieving efficiency through astute management. We are resolute in our pursuit of excellence, innovative brilliance, and the establishment of a trustworthy brand, with the guiding principle that integrity is fundamental, quality is paramount, service is supreme, and customer satisfaction is our unwavering commitment. Our aim is to enhance market competitiveness, serving China's electric power and grid transmission and distribution sectors with heightened speed, strength, and ambition. Your recognition fuels our drive, and we extend our heartfelt gratitude to both our new and long-standing customers for their enduring support. At Senhang Technology, we eagerly anticipate collaborating with you to craft a brighter future.
Our Advantages
After Sales Service
Packaging & Shipping
FAQ
Q1. Are you a factory or trading company?
A.We are a factory.
Q2. 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!
Q3. 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 l show you the photos of the products and packages before you pay the balance.
Q4. 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 vou have leaallyl registered patent, we can pack the goods in your branded boxes after getting your authorization letters.
Q5. Would you accept to use our logo?
A. If you have good quantity,it absolute no problem to do OEM.
Q6. How about the transport?
A. If the number of aoods is small we usually use TNT.DHL.FEDEX.EMS and some express voull 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.
Q7. What is your Production lead time /delivery time?
A: Generally, it will take 25 to 30 days after receivina vour advance payment.
The specificl delivery time depends on the items and the quantity of your order. Silicone rubber's reqular 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:l. We keep aood auality and competitive price to ensure our customers benefit:
A: 2. We respect every customer as our friend and we sincerely do business and make friendsl 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.
Audited Supplier 
){kind=link}