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Help CenterIndoor High Voltage Load Break Switch Disconnector With SF6 Gas Interruption, 36kV 1250A 3 Phase
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As a dedicated manufacturer of high-quality electrical equipment, Jinhua Dika Electrical Equipment Co., Ltd. proudly presents our Indoor High Voltage Load Break Switch Disconnector. Engineered for reliability and safety in medium-voltage power distribution networks, this 36kV, 1250A, 3-phase switch utilizes advanced SF6 gas interruption technology to ensure efficient and secure load breaking and isolation. Our commitment to stringent manufacturing standards, reflected in our comprehensive quality management systems, ensures that every unit delivers the performance and durability demanded by utilities and industrial facilities worldwide.
This Indoor High Voltage Load Break Switch Disconnector is designed to be a cornerstone of safe and reliable power distribution. Its core function is to make, break, and isolate electrical circuits under load conditions, providing a visible break for maintenance safety. The use of SF6 gas as the interrupting and insulating medium offers significant advantages over air-insulated designs, including superior arc-quenching capability, compact size, and minimal maintenance requirements. This makes it an ideal choice for indoor substations, industrial plants, and commercial facilities where space is at a premium and operational reliability is paramount.
Key Features and Technical Advantages:
- SF6 Gas Insulation & Interruption: The heart of the switch's performance lies in its SF6 gas technology. This inert gas provides excellent dielectric strength and arc-quenching properties, allowing for safe interruption of high currents and enabling a more compact design compared to air-insulated switches.
- High Reliability & Long Service Life: Constructed with robust materials and a sealed tank design, the switch is built to withstand the rigors of daily operation over many years. The sealed system minimizes the impact of environmental contaminants, ensuring consistent performance.
- Safe and Visible Isolation: The disconnector function provides a clear, visible break in the circuit, which is a critical safety feature for personnel performing maintenance or repairs downstream. This visible gap confirms the circuit is de-energized and isolated.
- Flexible Operation Options: The switch is available with either a manual operating mechanism for straightforward, cost-effective control or an optional motorized mechanism for remote operation and integration into automated distribution systems.
- Compact Indoor Design: Specifically engineered for indoor installation, its design optimizes footprint without compromising on performance or safety ratings, making it suitable for switchgear panels and indoor substations.
Detailed Technical Specifications:
| Parameter | Specification |
|---|---|
| Rated Voltage (Ur) | 36 kV |
| Rated Current (Ir) | 1250 A |
| Number of Phases | 3 |
| Rated Frequency | 50 / 60 Hz |
| Rated Short-Time Withstand Current (Ik) | Typically 25 kA / 3s (Customizable) |
| Rated Peak Withstand Current (Ip) | Typically 63 kA (Customizable) |
| Interruption Medium | SF6 Gas |
| Installation Environment | Indoor |
| Operating Mechanism | Manual (Standard), Motorized (Optional) |
| Mechanical Life | 10,000 operations minimum |
Benefits for Your Operations:
- Enhanced Safety: The combination of SF6 interruption and visible isolation drastically reduces arc flash hazards and provides a safe working environment for maintenance crews.
- Space Savings: The compact design of the SF6-insulated switch allows for more efficient use of valuable indoor space in substations and switchrooms.
- Reduced Maintenance: The sealed, pressurized SF6 system requires significantly less routine maintenance compared to air-break switches, lowering your total cost of ownership.
- Operational Flexibility: With optional motorized operation, it can be seamlessly integrated into SCADA systems for remote switching, enhancing grid management and responsiveness.
- Dependable Performance: Designed and tested to meet rigorous operational standards, it ensures reliable circuit control, minimizing the risk of unplanned outages.
Trust in the expertise of Jinhua Dika Electrical Equipment Co., Ltd., a manufacturer with a proven track record supported by robust quality management systems and an annual export value demonstrating global reach. Our products are trusted by clients across diverse markets including North America, Europe, Southeast Asia, and Africa. We ensure reliable logistics through major Chinese ports like Shanghai, Tianjin, Guangzhou, and Ningbo. When you choose our Indoor High Voltage Load Break Switch, you are not just purchasing a component; you are investing in a solution backed by manufacturing diligence, international compliance focus, and a commitment to powering your critical infrastructure with reliability and safety. Contact us today to discuss your specific requirements or to request a detailed quotation.
Frequently Asked Questions (FAQ)
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Q: What is the primary advantage of using SF6 gas in this load break switch?
A: SF6 gas offers superior arc-quenching and insulating properties compared to air. This allows for safer interruption of high currents, enables a more compact physical design, and significantly reduces maintenance needs due to its sealed system. -
Q: Is this switch suitable for both making and breaking load currents?
A: Yes, precisely. As a Load Break Switch Disconnector, it is specifically designed to safely make (close) and break (open) electrical circuits under normal load conditions (1250A at 36kV), and also provide a visible isolation point for safety. -
Q: Can this switch be operated remotely?
A: While a manual operating mechanism is standard, a motorized operating mechanism is available as an optional feature. This allows for remote operation and integration into automated control systems. -
Q: What are the typical applications for this 36kV indoor switch?
A> It is commonly used in indoor substations, primary distribution panels within industrial plants, commercial power centers, and any medium-voltage application requiring reliable circuit switching and isolation for maintenance. -
Q: How does the visible isolation feature work?
A: The disconnector part of the switch physically separates contacts to create an air gap that is visibly open. This provides a clear, unambiguous indication that the circuit is isolated and safe for personnel to work on downstream equipment. -
Q: What is the expected mechanical life of the switch?
A: The switch is designed for a long operational life, with a minimum of 10,000 mechanical operations. The actual electrical life depends on operating conditions but is enhanced by the SF6 interruption technology. -
Q: Are customization options available for different current or short-circuit ratings?
A: Yes. While the standard model is rated for 1250A, other current ratings and short-time withstand current (Ik) values can be discussed and customized based on your specific project requirements. -
Q: What kind of maintenance does the SF6 gas system require?
A: The sealed system is designed for minimal maintenance. Periodic checks for gas pressure and leakage are recommended as part of a routine substation maintenance schedule. The gas is contained within a sealed tank and does not require regular replacement under normal conditions.
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