OEM China Suppliers Factory MR-SafeRing-12: Fully Insulated Inflatable Ring Switchgear for 10-24kV Power Distribution Manufacturers, Manufacturer
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OEM China Suppliers Factory MR-SafeRing-12: Fully Insulated Inflatable Ring Switchgear for 10-24kV Power Distribution Manufacturers, Manufacturer

OEM China Suppliers Factory MR-SafeRing-12: Fully Insulated Inflatable Ring Switchgear for 10-24kV Power Distribution Manufacturers, Manufacturer

Introducing the MR-SafeRing-12/24 Fully Insulated Inflatable Ring Switchgear, a top-tier SF6 gas-sealed solution tailored for 10-24kV grids. Manufactured in China, this innovative switchgear features durable stainless-steel modules designed to last up to 30 years, making it perfect for installation in harsh environments, As leading suppliers in the industry, we ensure that our coaxial load switch technology reduces the risk of misoperation while offering flexibility for future expansion. Our products are certified by China’s High Voltage Test Center, making them ideal for use in substations, airports, and metro systems, With built-in pressure monitoring ranging from 0.15 to 0.4 bar, our maintenance-free Fully Insulated Inflatable Ring Switchgear is also automation-ready, ensuring efficient and reliable power distribution. Trust in our factory’s commitment to quality and performance for your electrical infrastructure needs
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Product Description

Type Designation
SafeRing-12 Fully-insulated inflatable ring switchgear structure type breakdown
1 Manufacturer Code
2 Model Type
3 Rated Voltage: 12 — Rated voltage 12KV; 24 — Rated voltage 24KV
4 Cabinet Type: C: Load Switch Cabinet; F: Fuses Switchgear Cabinet; V: Vacuum Circuit Breaker Cabinet; M: Measuring Cabinet; SV, SL: Bus Sectionalizing Switchgear; PT: PT Cabinet (Co-enclosure cabinet composed of any combination of C, F, V, S, VSL.)
5 Rated Current: 630 — Rated Current 630A; 1250 — Rated Current 1250A
6 Expansion Type: I: Left Extension; D: Right Extension; ID: Both Sides; Blank: Extendable
7 Cable Entry/Exit Method: L: Left; R: Right; LR: Both; Blank: Front
Performance Indicators
Unit Code Description Unit Code Description
C Standard Single-Bushing Load Switch Unit - Top Busbar Bushing
F Load Switch-Fuse Combination Unit SL Bus Coupler Unit
V Circuit Breaker Unit M Metering Unit
D Cable Incoming Unit (Non-Switch) PT PT Unit
+ Busbar Side Bushing 1K2(4) Load Switch Unit with Double Bushings
SF6 Gas Pressure Absolute Pressure at 20℃: 1.4 BAR Normal Operating Environmental Conditions
Annual Gas Leakage Rate ≤0.2% per year Maximum Temperature 40℃
Protection Level IP67 Minimum Temperature -40℃
Gas Chamber Stainless Steel Thickness 3.0mm Maximum Average Relative Humidity ≤95%
Altitude ≤2000 meters
Busbars Color
Switchgear Busbar 400mm² Cu Switchgear Front Panel RAL7012
Switchgear Grounding 150mm² Cu Side Panels & Cable Room Front Cover RAL7035
Compliant Standards
GB/T11022 GB3906 GB1985 GB3309 IEC60129 IEC60298
GB16926 GB38041 GB1984 IEC60056 IEC60265 IEC60420 IEC60694
Product Display
SafeRing-12-Fully-insulated-inflatable-ring-switchgear-with-In
SafeRing-12-Fully-insulated-inflatable-ring-switchgear-(1)
SafeRing-12-Fully-insulated-inflatable-ring-switchgear-(2)
SafeRing-12-Fully-insulated-inflatable-ring-switchgear-(3)
SafeRing-12-Fully-insulated-inflatable-ring-switchgear-(4)
SafeRing-12-Fully-insulated-inflatable-ring-switchgear-(5)
Technical Parameters
Model C Module F Module V Module CB Module
Composite Switch Combined Electrical Apparatus Vacuum Switch Disconnecting/Earthing Switch Vacuum Circuit Breaker Disconnecting/Earthing Switch
Rated Voltage kV 12 12 12 12 12 12
Rated Frequency Hz 50 50 50 50 50 50
Power Frequency Withstand Voltage (Phase-to-Phase/Port) kV 42/48 42/48 42/48 42/48 42/48 42/48
Lightning Impulse Withstand Voltage kV 75/85 75/85 75/85 75/85 75/85 75/85
Rated Current A 630 Note* 630 1250/630
Rated Closed-loop Breaking Current A 630
Rated Cable Charging Breaking Current A 135/135
Rated Short-circuit Making Current (Peak) A 50 80
Rated Peak Withstand Current kA 50
Rated Short-time Withstand Current kA/3s 20
Rated Short-circuit Breaking Current kA 31.5 20 25
Rated Transfer Current A 1750
Maximum Current of Associated Fuse A 125
Loop Resistance μΩ ≤300 ≤600
Mechanical Life Operations 5000 3000 5000 2000 5000 5000
Note: 1) Depends on the current rating of the fuse
MR-SafeRing-12 Gas-insulated Switchgear Structure
Safering-12 Switchgear Structure Component Overview
1. Fuse Compartment 5. Serial Number Label 9. Cable Compartment 13. Load Switch Operation Port
2. Capacitive Voltage Indicator 6. Schematic Diagram 10. RTU Mounting Compartment 14. Earthing Switch Operation Port
3. Short-circuit Ground Fault Indicator (Accessory) 7. Fuse Blow Indicator 11. Key Lock (Accessory) 15. Disconnector Operation Port
4. Pressure Indicator 8. Panel-mounted Padlock Device 12. Circuit Breaker Operation Port 16. Trip Button
17. Close Button
Safering-12 Technical Diagram Structure
Frequently Asked Questions
Q1: What rated voltages are available for the SafeRing-12 switchgear?
The SafeRing-12 fully insulated inflatable ring switchgear is available in two rated voltage levels: 12kV and 24kV, suitable for a wide range of medium-voltage distribution network applications.
Q2: What cabinet types are included in the SafeRing-12 series?
The series includes Load Switch Cabinet (C), Fuses Switchgear Cabinet (F), Vacuum Circuit Breaker Cabinet (V), Measuring Cabinet (M), Bus Sectionalizing Switchgear (SV/SL), and PT Cabinet. These can be combined in various co-enclosure configurations to meet different project requirements.
Q3: What is the protection level (IP rating) of the SafeRing-12 gas chamber?
The SafeRing-12 gas chamber achieves an IP67 protection level, meaning it is fully protected against dust ingress and temporary immersion in water, making it suitable for harsh or humid environments.
Q4: What insulating medium is used and what is the annual leakage rate?
The switchgear uses SF6 gas as the insulating medium with an absolute pressure of 1.4 BAR at 20℃. The annual gas leakage rate is controlled at ≤0.2% per year, ensuring long-term reliability and minimal maintenance requirements.
Q5: What international and Chinese standards does the SafeRing-12 comply with?
The SafeRing-12 complies with multiple standards including GB/T11022, GB3906, GB1985, GB3309, GB16926, GB38041, GB1984, IEC60056, IEC60129, IEC60265, IEC60298, IEC60420, and IEC60694, ensuring full compliance with both domestic and international requirements.
Q6: What is the mechanical life expectancy of the main switching modules?
The mechanical life varies by module type: the C Module (Composite Switch) and V Module (Vacuum Switch) are rated for 5,000 operations, the F Module (Combined Electrical Apparatus) for 3,000 operations, and the Disconnecting/Earthing Switch for 2,000 operations, ensuring durable long-term performance.

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