HWX-12 Outdoor Ring Main Unit(Outdoor Switchgear)
Product Model
Technical Parameters
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Item Name |
Unit |
Data |
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C-Load Switch Unit |
F-Combined Apparatus Unit |
V-Circuit Breaker Unit |
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Rated Voltage |
kV |
12/24 |
12/24 |
12/24 |
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|
Rated Frequency |
Hz |
50 |
50 |
50 |
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Rated Current |
A |
630 |
125 |
630 |
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|
Rated Transfer Current |
A |
|
1750 |
|
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Rated Insulation Horizontal |
1min Power Frequency Withstand Voltage (Phase to Ground) |
Phase-to-Phase,Phase-to-Ground |
kV |
|
42/65 |
|
|
Across the Break |
kV |
|
48/79 |
|
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Lightning Impulse Withstand Voltage |
Phase-to-Phase,Phase-to-Ground |
kV |
|
75/125 |
|
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|
Across the Break |
kV |
|
85/145 |
|
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Rated Short-Circuit Breaking Current |
kV |
20 |
315 |
20 |
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Rated Short-Circuit Making Current |
kA |
50 |
80 |
50 |
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Rated Short-Circuit Making Current (Grounding Switch) |
kA |
50 |
|
50 |
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Rated Short-Time Withstand Current |
Main Circuit |
kA |
20 |
20 |
20 |
|
|
Grounding Switch |
kA |
20 |
20 |
20 |
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Rated Short-Time Duration |
Main Circuit |
S |
4 |
|
4 |
|
|
Grounding Switch |
S |
4 |
4 |
4 |
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Rated Peak Withstand Current |
Main Circuit |
kA |
50 |
|
50 |
|
|
Grounding Switch |
kA |
50 |
50 |
50 |
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Internal Arc Test (Internal Arcing Test) |
A |
630 |
20kA/0.5s |
630 |
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Rated Closed-Loop Breaking Current |
A |
630 |
Restricted by Fuse |
630 |
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Rated Active Load Breaking Current |
A |
10 |
Restricted by Fuse |
25 |
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Rated Cable Charging Breaking Current |
Times |
5000 |
17.4 |
3000 |
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Mechanical Life |
Load/Isolation Switch |
Times |
3000 |
5000 |
3000 |
|
|
Grounding Switch |
Times |
|
3000 |
10000 |
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Vacuum Circuit Breaker |
Mpa |
|
|
|
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SF6 Gas Pressure(Absolute Pressure at 20℃) |
|
|
0.035 |
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Yearly Leakage Rate |
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|
≤0.025% Year |
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Cabinet and Fuse Protection Level |
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|
IP67 |
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Cabinet and Enclosure Protection Level |
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|
IP41 |
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Outdoor Ring Main Unit Protection Level |
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|
IP44W |
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Product Functions
◆Modular, expandable design for flexible configuration.
◆Fully insulated and sealed SF6 gas-filled compartments for enhanced safety.
◆Supports multiple cable entry/exit directions (left, right, bottom).
◆Compatible with electric operating devices and distribution automation terminals.
◆Enables remote monitoring and control (“Four Remote” functions) for smart grid integration.
◆Maintenance-free operation with a service life exceeding 30 years.
Applicable Environment
◇Ambient Temperature: -40℃ to +50℃.
◇Relative Humidity: ≤95% daily average.
◇Wind Speed: Up to 35m/s.
◇Pollution Level: III.
◇Seismic Resistance: 8 degree.
◇Installation Sites: Well-ventilated areas free from fire, explosion, severe vibration, or corrosive gases.
◇Special Note: For altitudes above 2000m or extreme conditions, consult the manufacturer for adjustments.
Product Highlights
◆High Safety: All live parts sealed in SF6 gas; mechanical interlocking; insulated touchable cable connections; pressure monitoring and explosion-proof relief device.
◆Flexible Design: Multiple line entry methods; modular combinable units; built-in busbar expansion; customizable solutions.
◆Compact Structure: Uniform module size (except metering), space-saving, and easy installation.
◆Economic Efficiency: Low maintenance, small footprint, high cost-performance, long service life.
◆Wide Applicability: IP67 protection, suitable for humid, dusty, salty, and polluted environments.
◆Smart Grid Ready: Supports automation terminals for intelligent monitoring and control.