RNN-12 SF6 Gas Insulated Load Isolation Switch (with Grounding)
Key attributes
| Brand | Switchgear parts |
| Model NO. | RNN-12 SF6 Gas Insulated Load Isolation Switch (with Grounding) |
| Rated voltage | 12kV |
| Rated normal current | 630A |
| Rated frequency | 50Hz |
| Series | RNN-12 |
Product descriptions from the supplier
The inflatable cabinet load switch (with grounding function) is an integrated control device designed specifically for medium voltage distribution systems. With "sealed insulation+grounding protection" as the core highlight, it integrates load on/off, circuit isolation, and grounding protection functions into a fully metal sealed gas box, providing a dual guarantee of "safety protection+precise control" for the power system. It has the advantages of easy installation, minimal maintenance, long lifespan, small size, affordable price, safety and reliability. This series of products will be shipped after passing the full inspection and comply with the relevant requirements of GB1984-89 and GB/T1984-2014 AC high-voltage circuit breakers.
Product Parameters
Serial Number |
Item |
Unit |
Parameter |
Remark |
1 |
Rated Voltage |
kV |
12 |
|
2 |
Rated Frequency |
Hz |
50 |
|
3 |
Rated Current |
A |
630 |
|
4 |
Rated Short-time Withstand Current |
kA/s |
20/4, 25/3 |
|
5 |
Rated Peak Withstand Current |
kA |
50/63 |
|
6 |
Rated Short-circuit Making Current |
kA |
50/63 |
|
7 |
Rated Active Load Breaking Current |
A |
630 |
|
8 |
Rated Line Closed-loop Breaking Current |
A |
630 |
|
9 |
Rated No-load Transformer Breaking Current |
A |
6.3 |
|
10 |
Rated Cable Charging Breaking Current |
A |
10 |
|
11 |
Active Load Breaking Operation Times |
times |
100 |
|
12 |
1min Power Frequency Withstand Voltage |
kV |
42/48 |
In SF6 Gas |
13 |
Lightning Impulse Withstand Voltage |
kV |
75/85 |
In SF6 Gas |
14 |
Mechanical Life |
times |
5000 |
|
15 |
Main Circuit Resistance |
μΩ |
≤35 |
|
16 |
Phase-to-phase Center Distance |
mm |
150 |
Installation dimensions
Q: What are the core advantages of the RNN-12 SF6 load isolation switch?
A:
The core advantages focus on four dimensions: "insulation reliability, function integration, safety protection, and environmental tolerance": ① Excellent insulation performance: SF6 gas has an insulation strength 2-3 times that of air, strong arc-extinguishing capacity, no creepage or flashover risks, suitable for harsh environments such as humidity, dust, and salt spray; ② Three-position integration: The integrated design integrates load breaking, isolation, and earthing functions, eliminating the need for a separate earthing switch, reducing cabinet volume and equipment costs; ③ Reliable safety interlock: Built-in mechanical and electrical dual interlock, strictly following the anti-misoperation logic of "cannot earth when closing, cannot close when earthing, and only isolation position allows cabinet door opening" to eliminate operational accidents; ④ Strong environmental adaptability: Fully sealed structure + IP67 protection level, anti-corrosion, moisture-proof, dust-proof, suitable for special scenarios such as coastal salt spray and plateau low temperature (-40℃~+70℃); ⑤ Low operation and maintenance cost: The leakage rate of the SF6 gas chamber is ≤0.1%/year, no frequent gas replenishment is required, and the mechanical life of the whole machine is ≥10000 times, greatly reducing the later maintenance workload; ⑥ Flexible operation: Supports electric remote control (RS485/Modbus protocol) and manual emergency operation, suitable for unattended substation needs.
Q: What is the RNN-12 SF6 gas insulated load isolation switch with grounding?
A:
The RNN-12 is a gas-insulated load isolation switch designed specifically for 12kV medium-voltage distribution networks, featuring integration of three-position functions: load current breaking, circuit isolation, and earthing protection, with SF6 gas as the insulation medium. It has a compact structure and excellent sealing performance, and can be directly embedded in compact cabinets such as gas-insulated cabinets and ring main units, suitable for power distribution scenarios requiring reliable isolation and earthing maintenance. The switch realizes safe switching of "closing-isolation-earthing" positions through mechanical interlock, can effectively cut off rated load current, isolate live parts to ensure maintenance safety, and is a key switch component for urban distribution networks, industrial parks, and unattended stations.
Online store
On-time delivery rate
Response time
100.0%
≤4h
Company overview
Workplace: 1000m²
Total staff:
Highest Annual Export(usD): 300000000
Services
Business Type: Sales
Main Categories: Low Voltage Electrical Apparatus/Instrument meters/Production equipment/Tester/High Voltage Electrical Apparatus/Electrical fittings/Equipment Parts
Whole life care manager
Whole-life care management services for equipment procurement, use, maintenance, and after-sales, ensuring safe operation of electrical equipment, continuous control, and worry-free electricity consumption.
The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.
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