1. Product Overview

SWHXGN2 - 40.5 is an expandable ring main unit specifically designed for secondary distribution networks.It plays an important role in the field of power distribution network, can meet a variety of complex power distribution needs, and provide strong support for the stable operation of the power system.

2. Standard combination form

The SWHXGN2-40.5 ring main unit offers 10 standard configurations. This wide range of options allows it to adapt to most 36-40.5kV distribution network requirements. Whether it's a small, localized distribution network or a large, complex distribution system, you can flexibly select the appropriate configuration based on your needs, achieving efficient and stable power distribution.

3. Transformer protection method

(1) Load Switch-Fuse Combination: For transformer protection, the SWHXGN2-40.5 offers a load switch-fuse combination. This combination quickly disconnects the circuit in the event of a transformer overload, short circuit, or other fault, protecting the transformer from damage and ensuring safe operation of the power system.

(2) Vacuum Circuit Breaker Unit with Protective Relay: In addition to load switch-fuse combination devices, the SWHXGN2-40.5 can also use a vacuum circuit breaker unit with a protective relay for transformer protection. Vacuum circuit breakers offer advantages such as strong arc extinguishing capability and long life. When used in conjunction with a protective relay, they can more accurately detect and handle transformer faults, further improving the reliability and accuracy of protection.

4. Air chamber design

The stainless steel chamber of the SWHXGN2-40.5 is filled with SF6 gas. This design completely seals all live components and the switch, isolating them from the outside world. SF6 gas has excellent insulating and arc-extinguishing properties, effectively protecting electrical equipment from environmental factors such as moisture, dust, and corrosion.

5. Advantages of fully sealed system

This fully sealed system brings many advantages to the SWHXGN2-40.5 ring main unit.

(1) High reliability: Since the internal switches and all live parts are not affected by changes in the external environment, the ring network cabinet can always maintain a stable operating state, greatly reducing the failure rate caused by environmental factors and improving the reliability of the entire distribution system.

(2) Personnel safety: The fully sealed design prevents personnel from directly contacting live parts, reduces the risk of safety accidents such as electric shock, and ensures the personal safety of operators.

(3) Maintenance-free characteristics The fully sealed system makes the ring network cabinet almost maintenance-free during actual operation, reducing maintenance costs and workload and improving the efficiency of equipment use.

6. Distribution Network Automation Terminal

The SWHXGN2-40.5 ring main unit (RMU) can be supplied with a distribution network automation terminal. This terminal enables remote monitoring, fault diagnosis, and automatic control of the RMU, further enhancing the intelligence and operational management efficiency of the distribution network. Through the terminal, personnel can monitor the RMU's operating status in real time, identify and address faults promptly, and ensure the continuity and stability of the power supply.

In summary, the SWHXGN2-40.5 ring main unit has become an ideal choice in secondary distribution networks due to its rich combination forms, reliable protection methods, advanced air chamber design and fully sealed system advantages, as well as its compatibility with distribution network automation terminals.