HXGG-12/24 Fully Insulated Solid Ring Main Unit (RMU)

The cabinet structure is made of aluminized zinc-coated steel sheets formed through multiple bending processes and assembled with bolts, ensuring strength and reliability.
It features a compact and simple design, an attractive appearance, and a well-organized layout.
Combined with modern sensing technology, new protective relays, excellent technical performance, and a lightweight, flexible assembly solution, it is well-suited to meet evolving market demands.
Optional configurations such as electric operating mechanisms, PTs, CTs, UPS systems, and DTUs can be included for distribution automation applications.

IEC 62271: Metal-Enclosed Switchgear and Controlgear for AC Systems, 1 kV to 52 kV

GB/T 3906: Metal-Enclosed Switchgear and Controlgear for AC Systems, 3.6 kV to 40.5 kV

DL/T 404: Metal-Enclosed Switchgear and Controlgear for AC Systems, 3.6 kV to 40.5 kV

The cabinet is made of aluminum-zinc coated steel plates or steel plates with surface plastic spraying treatment, assembled by bolting and riveting with overlapping joints. The switchgear compartment uses solid insulation materials as the insulating medium. It is compact and lightweight, featuring strong modularity and versatility. The cabinet protection level reaches IP4X, while the switchgear protection level reaches IP67.

The cabinet consists of four main sections:
① Switchgear compartment (three-position load switch, circuit breaker, or three-position isolating switch)
② Control mechanism compartment (operating mechanism, interlocking mechanism)
③ Cable compartment
④ Low-voltage control compartment, including measurement or metering circuits.

Inside the cabinet, the instrument compartment is located above the switchgear compartment and at the front of it. The middle section houses the switchgear compartment and the control mechanism compartment. Each compartment is separated by insulating switches to prevent faults in one compartment from affecting adjacent compartments.