RMU Ring Main Unit
01
Solid Insulation Ring Network Switching Equipment
PRODUCT PARAMETERS
Name |
Unit |
C Module (Composite Switch) |
F Module (Combination Switchgear) |
V Module (Vacuum Switch) |
Isolation / Ground Switch |
Rated Voltage |
kV |
12 |
12 |
12 |
12 |
Rated Frequency |
Hz |
50 |
50 |
50 |
50 |
Power Frequency Withstand Voltage (Phase-to-Ground / Across Terminals) |
kV |
42 / 48 |
42 / 48 |
42 / 48 |
42 / 48 |
Lightning Impulse Withstand Voltage |
kV |
75 / 85 |
75 / 85 |
75 / 85 |
75 / 85 |
Rated Current |
A |
630 |
Note 1) |
630 |
630 |
Rated Short-Time Withstand Current |
kA |
25 |
20 |
25 |
25 |
Rated Peak Withstand Current |
kA |
63 |
80 |
63 |
63 |
Rated Short-Circuit Making Current |
kA |
63 |
80 |
63 |
63 |
Rated Short-Time Withstand Current (kA/3s) |
kA/3s |
25 |
31.5 |
25 |
25 |
Rated Transformer Inrush Current |
A |
10 |
10 |
10 |
10 |
Rated Cable Charging Breaking Current |
A |
10 |
10 |
10 |
10 |
Rated Transfer Current |
A |
1750 |
125 |
125 |
125 |
Circuit Resistance |
µΩ |
< 300 |
< 600 |
< 300 |
< 300 |
Mechanical Life |
cycles |
5000 |
3000 |
5000 |
2000 |
Product Features
Exceptional Insulation Performance
Utilizing SF6 gas as the primary insulating medium, the switchgear offers superior dielectric properties and arc-extinguishing performance. This ensures stable operation under high-voltage conditions and minimizes dielectric losses compared to traditional air-insulated solutions.
Modular Design for Flexible Configuration
Composed of multiple functional modules such as load switch units, load switch-fuse combination units, and vacuum circuit breaker units, the product can be flexibly configured to meet the specific needs of various application scenarios.
Metal-Enclosed Structure for Safety and Reliability
The switchgear features a fully enclosed metal enclosure that shields the equipment from external environmental factors such as dust, moisture, and pollution. The design also prevents accidental contact with live parts, ensuring operational and personnel safety.
High Safety and Reliability
Operating in a fully sealed environment, the switchgear eliminates the risk of gas leakage or insulation degradation. The superior arc-extinguishing capability of SF6 gas ensures effective fault interruption, improving the overall safety of the power distribution system.
Compact Size and Space-Saving Design
The compact and streamlined structure significantly reduces the equipment's footprint, making it ideal for confined spaces such as distribution rooms and underground cable tunnels.
Long Service Life and Maintenance-Free Operation
The fully enclosed design protects the internal components from environmental corrosion and degradation. With a long service life and minimal maintenance requirements, the product significantly reduces operational and maintenance costs.
Contact Information
For more details, please contact us:
Company Name: KENJING GROUP Co., Ltd.
Phone: +86-15888718229
Email: john@china-kenjing.com