Overview of RMU cabinets

1. What is RMU cabinet?

RMU (Ring Main Unit) cabinet or medium voltage cabinet is an integrated electrical equipment with the function of connecting, measuring and integrating fixed type breaker with transformer protection function.

2. Structure of RMU cabinets

The RMU cabinet is connected by output and input cable compartments by isolating breakers and cables out to transformers using load switches and protective fuses.

Switching element includes load breaker, ground cutter and knife, busbar and terminals. The elements are placed in the SF6 gas tank (made of a substance that is particularly resistant to the environment such as dirt, grease, rust).

RMU cabinets are divided and connected to each other by separate compartments, with RMU standards with 2 compartments, 4 compartments, and 6 compartments, depending on customers' requirements with functions.

3. Functions of RMU electrical cabinets

The essential functions of the switch are:

Circuit control: It controls the circuit to switch functions.

Isolation: It isolates the faulty equipment from the rest of the circuit

Protection: It protects the circuit from ground fault current, short-circuit current fault and overload.

4. Advantages of RMU cabinets

The RMU cabinet is an innovative solution that makes it easy to manage the many challenges of power distribution. The RMU is an all-in-one solution, safe, easy to install and maintenance free, helping utilities improve network reliability and uptime and reduce operating costs.

5. Types of RMU electrical cabinets

There are many ways to categorize products and to name them

Based on structure divided into 2 categories

Extensible

The cabinet is not expandable (Compact)

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