Wenzhou Shuowei Electric Co., Ltd. is one of the most reliable manufacturers and suppliers of solid cabinet circuit breaker switch in China, also supports customized service. Welcome to wholesale bulk advanced solid cabinet circuit breaker switch in stock here from our factory. If you have any enquiry about quotation, please feel free to email us.
Solid cabinet circuit breaker switchy
Products Description
Solid-insulated RMU (Solid Insulated Ring Main Unit) is a compact medium-voltage switchgear (12-40.5kV) that uses solid insulating materials (such as epoxy resin) instead of traditional SF6 gas. The Core Assembly is its key functional module. It features high reliability, environmental friendliness and maintenance-free operation.
Features
Solid insulation: Epoxy resin encapsulation, free of SF6, environmentally friendly and maintenance-free.
Compact and modular: Integrated three workstations (closed - open - grounded), small in size.
High reliability: Moisture-proof and dust-proof, suitable for harsh environments (-40℃ to +70℃).
Intelligence: Optional monitoring sensors are available, and remote control is supported.
Application
Urban distribution ring networks, new energy power stations, industrial distribution.
Advantages
No risk of gas leakage, maintenance-free and long service life;
Products Precautions
a) Ambient Temperature:
Upper limit +80 *C , Lower limit -25 'C , The average temperature measured within 24 hours shall not exceed 35 "C
b) Altitude: ≤ 3,000 meters.
c)Installation Environment
The surounding air should not be significantly contaminated by dust, smoke, corrosive/flammable gases, vapors, or salt mist
d) Relative Humidity:
Daily average ≤ 95%, Monthly average ≤ 90%.
e)Electromagnetic Interference:
The induced electromagnetic interference amplitude in the secondary system shall not exceed 1.6 kV
f) Vibration Conditions:
No frequent severe vibrations, seismic intensity shall not exceed 8 degrees.
g) Application Site: Indoor use only.
Note: lf the environmental conditions exceed the specified range, the user must consult with the manufacturer to confirm feasibility
Products Parameters
| Item | Unit | Circuit Breaker Unit | Load Switch Unit | Switch-Fuse Combinations Unit |
|---|---|---|---|---|
| Rated Voltage | kV | 12 | 12 | 12 |
| Rated Frequency | Hz | 50 | 50 | 50 |
| Rated Current | A | 630/1250 | 630/1250 | Dependent on Fuse Current Rating |
| Rated Insulation Level | ||||
| - Power Frequency Withstand Voltage (Phase-to-Phase/Phase-to-Ground) | kV | 42 | 42 | 42 |
| - Power Frequency Withstand Voltage (Vacuum Interrupter/Isolation Gap) | kV | 48 | 48 | 48 |
| - Power Frequency Withstand Voltage (Control and Auxiliary Circuits) | kV | 2 | 2 | 2 |
| - Lightning Impulse Withstand Voltage (Phase-to-Phase/Phase-to-Ground) | kV | 75 | 75 | 75 |
| - Lightning Impulse Withstand Voltage (Vacuum Interrupter/Isolation Gap) | kV | 85 | 85 | 85 |
| Rated Short-Time Withstand Current | kA | 20 (25)/45 | 20 (25)/45 | - |
| Rated Peak Withstand Current | kA | 50 (63) | 50 (63) | - |
| Rated Short-Circuit Making Current | kA | 50 (63) | 50 (63) | Limited by High-Voltage Fuse |
| Rated Short-Circuit Breaking Current | kA | 20 (25) | 20 (25) | Limited by High-Voltage Fuse |
| Rated Transfer Current | A | - | - | 1700 |
| Rated Active Load Breaking Current | A | - | - | - |
| Rated Closed-Loop Breaking Current | A | 630 | 630 | - |
| Internal Arc Fault Test (AFLR Class) | kA/S | 20 (25)/0.5S | 20 (25)/0.5S | - |
| Partial Discharge (at 1.2Ur) | PC | ≤10 | ≤10 | - |
| Ingress Protection (IP) Rating (Cabinet) | - | IP4X | IP4X | IP4X |
| Main Circuit Resistance | μΩ | ≤120 | ≤120 | - |
| Mechanical Endurance | ||||
| - Circuit Breaker/Load Switch | Times | 10000 | 10000 | 10000 |
| - Disconnector/Grounding Switch | Times | 3000 | 3000 | 3000 |
Products Dimensional
Products FAQ
Q 1. Are you factory?
A.YES, Welcome to visit our company and factory.
Q 2. How's the delivery time?
A. Usually it will take about 7-30 days for MOQ.
Q 3.Can you design customer's packing?
A.YES.We can customized the package for you.
Q 4.Do you have ability for OEM/ODM cooperation?
A.OEM/ODM cooperation is welcomed. And we have full experience about them.
Q 5.We wants to know month capacity.
A. lt depends on which model. Generally, month capacity can reach near 100,000pcs.
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