Disconnect Switch 12kv 10kv 1000a 1250a

Usune Disconnect Switch 12kV 10kV 1000A 1250A is a core product developed by the company focusing on the needs of industrial high-voltage power distribution. It is specifically designed for generator outlets and high-voltage systems, adapting to 10kV and 12kV voltage levels, and covering mainstream current specifications of 1000A and 1250A.

The 12kV/10kV/1000A/1250A Disconnect Switch consists of three independent single-pole units and can also be flexibly configured as a three-pole integrated high-voltage electrical device. It features a compact structure, convenient operation, and reliable insulation. As a flagship product developed in-house, it meets the isolation, grounding, and pollution prevention requirements under various operating conditions. It achieves reliable circuit switching under no-load conditions, forming a clearly visible isolation break, ensuring the safety of maintenance personnel from the source.

Core Advantages

1. Advanced Technology and Stable Performance

- Integrates the latest domestic high-voltage electrical technology, optimizes the conductive circuit and insulation design, reduces contact resistance, and improves high-current carrying capacity;
- Supports indoor (N) and outdoor configurations, with optional grounding switch (D) and pollution-proof (W) types to adapt to complex operating conditions;
- Uses high-strength insulation materials and rust-resistant metal components, resisting aging and corrosion, extending service life.

2. Compliant and Certified, Safe and Reliable

- GB 1985-2014 "High Voltage AC Disconnect Switches and Grounding Switches"
- GB/T 11022-2011 "Common Technical Requirements for High Voltage Switchgear and Control Equipment Standards"
- DL/T 486-2010 "Technical Conditions for Ordering High Voltage AC Disconnect Switches and Grounding Switches"
- DL/T 593-2006 "Technical Requirements for High Voltage Switchgear and Control Equipment"

3. Strong Adaptability and Wide Range of Applications

- Voltage/Current Specifications: 10kV, 12kV; 1000A, 1250A, expandable to 2000A-10000A high current models;
- Types Available: Ungrounded, Single Grounded, Through-wall type, meeting different installation requirements;
- Environmental Tolerance: Wide operating temperature range of -50℃ to +50℃, altitude ≤2000m (customizable for altitudes above 2500m), earthquake resistant to magnitude 8, 20mm... Icing resistant, suitable for Class III and IV pollution areas.

Technical Parameters

Outer dimension

Project Reference

Cas-space Rocket Launch Project

Test Report

Real Application Cases

Case 1: 12kV Power Distribution System Upgrade at a Large Steel Plant

A state-owned steel plant needed to upgrade its 12kV high-voltage power distribution room isolation equipment. The core challenges were high-current heating, poor outdoor pollution protection, and high maintenance safety risks. The Usune GN□-12DW/1250A disconnector (with grounding and pollution protection) was selected, suitable for harsh outdoor dust environments. Its 1250A rated current meets the full-load operation requirements of the steelmaking production line.

- Implementation Results: The equipment has been in operation for 2 years without overheating or insulation failures. Grounding function is reliable, and the isolation break is clear during maintenance. Maintenance efficiency has increased by 40%, resulting in long-term bulk purchase orders from the customer.

Case 2: 10kV Generator Outlet Isolation at a Large Thermal Power Plant

A 300MW thermal power plant needed to configure isolation equipment at the 10kV generator outlet, requiring high-altitude adaptability, high-current stability, and vibration resistance. The Usune GN□-10/1000A indoor disconnect switch was selected, with a customized high-altitude reinforced solution suitable for plant areas with altitudes ≤2200m and resistant to strong vibration conditions.

- Implementation Results: The equipment has operated stably for 3 years, withstanding the impact of large currents at the generator outlet without any failure to trip or malfunction, providing safe isolation protection for unit maintenance and becoming a benchmark application case in power plants.

FAQ

Q1: What is the core difference between the Usune Disconnect Switch 12kV 10kV 1000A 1250A and ordinary disconnect switches?

A: The core difference lies in the high current carrying capacity and environmental adaptability. Ordinary disconnect switches have a rated current of ≤630A, while Usune products focus on 1000A and 1250A high current scenarios, optimizing the conductive structure to reduce heat generation; at the same time, they support customization for indoor/outdoor use, pollution protection, grounding, etc., and can withstand extreme temperatures from -50℃ to +50℃, making them suitable for harsh conditions such as steel mills and power plants, which ordinary products cannot meet.

Q2: Does this disconnect switch support use in high-altitude and heavily polluted environments?

A: Yes. The standard model is suitable for altitudes ≤2000m and pollution levels III-IV. For altitudes ≥2500m, compatibility can be improved through customized solutions such as reinforced insulation and reduced rated current. For heavily polluted environments, a pollution-resistant (W) model is available, using pollution-resistant insulators to enhance anti-flashover capabilities. This model has been implemented in several high-altitude steel plants and power plants.

Q3: What is the warranty period for the 12kV, 10kV, 1000A, and 1250A Disconnect Switches? Is installation guidance provided after-sales?

A: Usune offers a 2-year warranty, covering free repair and replacement of parts for non-human-caused faults within the warranty period. The after-sales team provides free installation guidance and technical training, and can assist with commissioning remotely or on-site. Customized technical solutions are also supported to ensure equipment adaptability to on-site conditions and eliminate maintenance concerns.