7.2KV Vacuum Contactor

The Sunway Hanguang 7.2KV Vacuum Contactor focuses on the frequent switching of loads such as high-voltage motors and capacitor banks, encompassing multiple models in the VSHC-7.2A/B and VC-7.2 series. Founded in 1968, the company utilizes high-purity Cu-Cr contact vacuum interrupters and an optimized bistable MAC permanent magnet drive mechanism. Strictly adhering to numerous international and industry standards, it is compatible with mainstream medium-voltage switchgear. The product has long been supplied to well-known domestic and international companies, with an average annual export growth exceeding 10%, making it a highly competitive product in the Chinese high-voltage electrical field.

Core Product Features

1. Excellent Arc Extinction, Stable and Controllable

The 7.2KV Vacuum Contactor is equipped with a self-developed optimized vacuum interrupter, using a single-stage sealing process, with vacuum degree strictly controlled within 1.33×10⁻³Pa. High-purity Cu-Cr contacts achieve arc-free switching, eliminating the risk of arc re-ignition. It boasts an electrical life of 250,000 cycles under AC-3 conditions and 100,000 cycles under AC-4 conditions. After millions of operation tests and accelerated aging tests, it has achieved over 15 years of fault-free operation in the field, with a failure rate below 0.007%.

2. Advanced Mechanism, Suitable for High Frequency

The 7.2KV Vacuum Contactor adopts an optimized bistable MAC permanent magnet drive mechanism, supporting wide voltage input of AC120V/220V. Closing time is ≤200ms, and opening time is as fast as ≤60ms, featuring multiple safety functions and multi-mode control. Mechanical life of up to 1 million cycles, maintenance-free within 10,000 operations, precisely suited for high-frequency start-stop scenarios in industrial applications.

3. Robust Insulation and Wide Adaptability

The sealed pole is integrally encapsulated with epoxy resin APG, offering excellent resistance to pollution and condensation, suitable for IV-level pollution environments. It can operate stably in environments ranging from -45℃ to +85℃, at altitudes up to 4000 meters, and in high salt spray and strong electromagnetic interference scenarios, with electromagnetic interference resistance up to EMC Class 4.

4. Easy Installation and Maintenance, Controllable Costs

Modular design is compatible with mainstream switchgear, and installation and maintenance can be completed by a single person using conventional tools. The fully enclosed structure requires no special maintenance for 30 years, reducing operation and maintenance costs by more than 85% compared to traditional equipment. When paired with a dedicated fuse, it can be adapted to 1000 MVA fault circuits.

5. Intelligent Expansion and Environmental Compliance

Optional multi-functional intelligent monitoring modules are available, supporting various mainstream communication protocols for seamless integration into intelligent operation and maintenance platforms. It is oil-free and SF6-free, complying with international environmental standards, and has passed multiple system certifications, with optional international certifications to meet global market demands.

6. Strong Endorsement and Comprehensive Service

The company is equipped with a full set of advanced testing equipment, and each 7.2KV Vacuum Contactor undergoes 20 factory inspections with traceability. Annual production capacity reaches 350,000 vacuum interrupters. With 150 technical support centers worldwide, we provide full-cycle service, with 24-hour on-site response domestically and 72-hour response overseas, and a 10-year warranty. As a professional supplier, we guarantee customer rights through rigorous quality control.

Product Parameters

Typical Application Scenarios

- Mining: Suitable for hoists and crushers, resistant to high dust and strong vibrations, ensuring continuous operation.

- Metallurgy: Controls rolling mills and electric furnaces, resistant to high temperatures and strong electromagnetic fields, contributing to stable production.

- Petrochemical Industry: Suitable for explosion-proof areas, resistant to corrosion and condensation, eliminating arc hazards.

- Rail Transit: Used in traction substations, resistant to wide temperature ranges and strong vibrations, ensuring power supply.

- New Energy: Suitable for wind and solar power plants, facilitating efficient grid connection of clean energy. - Marine and Shipping: Resistant to salt spray corrosion, suitable for harsh operating conditions, and provides stable power supply.

- General Industrial: Compatible with international brand equipment, improving system reliability.

- Infrastructure: Ensures power supply to critical loads and reduces downtime losses.