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Help CenterGW4-126 Double Column Horizontal Rotary Disconnector 2000A High Altitude
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Jinhua Dika Electrical Equipment Co., Ltd. is a specialized manufacturer with over a decade of experience in high-voltage switchgear solutions. Our GW4-126 Double Column Horizontal Rotary Disconnector, rated for 2000A and optimized for high altitude applications, is engineered to deliver reliable isolation and switching performance in extreme environments. Backed by our comprehensive quality management system and exported to over 20 countries, this disconnector combines rugged mechanical design with proven electrical reliability.
★ Product Overview & Core Advantages
The GW4-126 series is a horizontal rotary disconnector designed for outdoor substations, power plants, and industrial distribution networks. Its double-column structure ensures stable operation under adverse weather conditions, while the 2000A current rating meets the demands of medium-to-high-capacity systems. Key advantages include:
- High Altitude Optimized: Specially designed insulation and contact systems maintain performance at altitudes up to 4000 meters, with optional enhancements for even higher elevations.
- Robust Mechanical Design: The double-column horizontal rotary mechanism provides smooth opening and closing, reducing operating torque and extending service life.
- Low Contact Resistance: Silver-plated or copper-alloy contacts ensure low temperature rise and high conductivity, even under heavy load.
- Easy Maintenance: Modular construction allows quick replacement of insulation, contacts, and driving mechanisms without disassembling the entire unit.
★ Technical Specifications
| Parameter | Standard Value | Remarks |
|---|---|---|
| Rated Voltage | 126 kV | Applicable to 50/60 Hz systems |
| Rated Current | 2000 A | Continuous current carrying capability |
| Short-Time Withstand Current (3s) | 40 kA (rms) | Peak factor: 2.5 |
| Peak Withstand Current | 100 kA (peak) | Corresponds to dynamic stability |
| Insulation Level (Lightning Impulse) | 550 kV (peak) | Full wave / chopped wave |
| Power Frequency Withstand Voltage | 230 kV (rms) | For 1 minute, dry and wet |
| Mechanical Life | ≥ 2000 operations | Without major maintenance |
| Operating Mechanism | Manual or motor-operated | Optional remote control |
| Altitude Capability | Up to 4000 m standard | Customizable for higher altitudes |
| Ambient Temperature Range | -40°C to +60°C | Suitable for extreme climates |
★ Detailed Features & Customer Benefits
- Double Column Horizontal Rotary Design: Provides a wider air gap and better visibility of the disconnecting position, enhancing safety during maintenance. The rotary motion reduces friction and wear, ensuring consistent performance over thousands of cycles.
- High Altitude Adaptability: At elevations above 1000m, air density decreases, which can reduce insulation strength. Our disconnector uses specially graded insulation and increased creepage distances to maintain full dielectric performance. For extreme altitudes >4000m, custom solutions are available upon request.
- 2000A Continuous Current Rating: Designed for high-capacity feeders and transformers, the low-resistance contact system minimizes energy losses and temperature rise, directly improving system efficiency and reducing operational costs.
- Rugged Construction: The base frame is made of hot-dip galvanized steel or stainless steel (optional), resistant to corrosion in coastal or industrial environments. Insulators can be selected from high-quality porcelain or silicone rubber composite, offering excellent anti-fouling performance.
- Flexible Operation: Supports manual operation with a lever handle or motor-driven gearbox for remote SCADA integration. Auxiliary switches (normally open/normally closed) can be added for position indication.
- Compliance with International Standards: The disconnector design follows IEC 62271-102 and relevant GB standards. Our factory holds multiple management system certifications, ensuring consistent quality control and traceability.
★ Trust & Credibility
Since our establishment, Jinhua Dika Electrical Equipment Co., Ltd. has been dedicated to providing high-quality electrical components to global markets. With an annual export value of US$1 million – US$1.5 million, our products reach customers across North America, Europe, Southeast Asia, Africa, and Oceania. Our team of 11–50 skilled professionals works in a facility located in Jinhua, Zhejiang, China. We have implemented quality management systems that are certified to ISO9001, ISO14000, and other standards (full list available upon request). Each disconnector undergoes rigorous factory acceptance testing, including mechanical operation, dielectric tests, and resistance measurement, before shipment.
We understand that purchasing high-voltage equipment requires confidence in both product and supplier. Therefore, we offer comprehensive technical support, including installation guidance, spare parts supply, and optional on-site commissioning. Our main ports include Shanghai, Tianjin, Guangzhou, and Ningbo, ensuring efficient logistics worldwide.
Why choose Jinhua Dika?
- Experienced Manufacturer: Over a decade of focused production in high-voltage disconnectors and switches.
- Customization Capability: Altitude, motor voltage, insulator type, and coating can be adapted to your project.
- Competitive Lead Times: Standard orders shipped within 30–45 days after confirmation.
- After-Sales Commitment: 12-month warranty against material and manufacturing defects; extended options available.
Contact us today for detailed drawings, test reports, or a quotation. Let our GW4-126 Double Column Horizontal Rotary Disconnector 2000A be the reliable link in your power system.
Frequently Asked Questions (FAQ)
-
Q: What is the maximum altitude for standard operation?
A: The standard model is designed for altitudes up to 4000 meters. For higher altitudes (e.g., 5000m), we can customize the insulation and creepage distances accordingly. -
Q: Can this disconnector be used for both indoor and outdoor applications?
A: The GW4-126 is primarily intended for outdoor installations due to its weatherproof enclosure and insulator design. Indoor use is possible with proper ventilation and clearance. -
Q: What operating mechanisms are available?
A: We offer manual (hand crank or lever), motor-operated (AC/DC voltages from 110V to 480V), and pneumatic options. Remote control via PLC or SCADA is supported. -
Q: Do you provide auxiliary contacts for position indication?
A: Yes, up to 6 NO + 6 NC auxiliary contacts can be integrated into the operating mechanism. Position indicators are also visible on the main shaft. -
Q: How long is the warranty period?
A: Our standard warranty is 12 months from the date of shipment. Extended warranty (up to 24 months) is available at an additional cost. -
Q: What type of insulators are recommended for high pollution environments?
A: For heavy industrial or coastal areas, we recommend silicone rubber composite insulators with anti-fog sheds. Standard porcelain is suitable for moderate environments. -
Q: Do you provide type test reports?
A: Yes, type test reports from accredited laboratories (e.g., KEMA, STL) are available for the standard variants. For custom modifications, we can arrange additional testing. -
Q: What is the typical delivery time?
A: For standard configurations, delivery is 30–45 working days after advance payment. Custom orders may require 50–60 days depending on complexity.
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