Product Description
The Metal Enclosed RMC Box is ideally suited for use in a wide range of medium-voltage applications, including ring main units, power plants, and substations. Designed for versatility and durability, it is particularly applicable for power distribution control and protection in diverse settings such as industrial and mining enterprises, residential communities, schools, and high-rise buildings. By incorporating a robust Metal Enclosed RMC Box, the system ensures reliable performance and enhanced protection for electrical equipment in both indoor and outdoor environments.
Technical Parameters
|
Item |
Unit |
Parameter |
|
|
Rated Voltage |
kV |
12 |
|
|
Rated Frequency |
Hz |
50 |
|
|
Rated Current |
A |
630,1250 |
|
|
Rated Short-time Withstand Current(4s) |
20,25,31.5 |
||
|
Rated Peak Withstand Current |
50,63,80 |
||
|
Rated Short-circuit Breaking Current |
kA |
20,25,31.5 |
|
|
Rated Short-circuit Making Current(Peak) |
50,63,80 |
||
|
Rated Insulation Level |
Power Frequency Withstand Voltage(Phase-to-Phase,Phase-to-Earth/Isolation Break) |
kV |
42/48 |
|
Impulse Withstand Voltage(Phase-to-Phase,Phase-to-Earth/Isolation Break) |
75/85 |
||
|
Rated Operating Sequence |
O-0.3s-CO-180s-CO |
||
|
Number of Short-circuit Breaking Operations |
Times |
50 |
|
|
Mechanical Life |
Times |
10000 |
|
|
Protection Degree |
IP3X |
||
Advantages
The high strength metal shell stands up to impacts and corrosion,and a weather resistant coating keeps it looking and performing well even in harsh environments like coastal or industrial areas.
Each functional unit is independently partitioned,so installation and future expansion are pretty straightforward.The isolation switch has a clearly visible break,which means operators can see the status directly,no guesswork involved and better safety as a result.
A forced mechanical interlock prevents accidental opening or closing and stops anyone from entering live compartments,keeping personnel safe.
Applications
Box type substation
Cable branch box
New energy projects
Frequently Asked Questions
Q1: What is the main function of a Metal Enclosed RMC Box?
A: It is primarily used for power distribution control and protection in medium-voltage systems.It isolates and switches electrical circuits,protects against faults,and ensures safe operation in applications such as ring main units,substations,and industrial power systems.
Q2: What are the advantages of the visible break design?
A: The visible break design allows operators to visually confirm that the isolating switch is in the open position before performing maintenance.This provides an additional layer of safety by eliminating guesswork and preventing accidental energization.
Q3: How does the pressure relief system work?
A: In the event of an internal arc fault,the pressure relief devices automatically open upward to release high-pressure gases and arc energy.This directional venting protects personnel and minimizes damage to surrounding equipment.
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