Wholesale SafeRing-12 Fully insulated inflatable ring switchgear with Insulation Protection Manufacturers, Companies

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Wholesale SafeRing-12 Fully insulated inflatable ring switchgear with Insulation Protection Manufacturers, Companies

MR-SafeRing-12/24 Fully Insulated Inflatable Ring Switchgear is a SF6 gas-sealed solution for 10-24kV grids. This fully insulated inflatable ring switchgear features stainless-steel modules with 30-year lifespan, immune to harsh environments. Its coaxial load switch prevents misoperation while enabling flexible expansion. Certified by China's High Voltage Test Center, it supports vacuum breakers for substations, airports and metros. With 0.15-0.4bar pressure monitoring and automation readiness, this maintenance-free fully insulated inflatable ring switchgear ensures reliable power distribution.

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Product Description

Type Designation

SafeRing-12 Fully insulated inflatable ring switchgear designation structure

1	Manufacturer Code
2	Model Type
3	Rated Voltage: 12 (12 kV); 24 (24 kV)
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, SL)
5	Rated Current: 630 (630 A); 1250 (1250 A)
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

Technical Item	Specification	Normal Operating Environmental Conditions
SF6 Gas Pressure	Absolute Pressure at 20℃: 1.4 BAR	Maximum Temperature	40℃
Annual Gas Leakage Rate	≤0.2% per year	Minimum Temperature	-40℃
Protection Level	IP67	Maximum Average Relative Humidity	≤95%
Gas Chamber Stainless Steel Thickness	3.0 mm	Altitude	≤2000 meters

Busbars		Color Coding
Switchgear Busbar	400 mm² Cu	Switchgear Front Panel	RAL7012
Switchgear Grounding	150 mm² 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 units

Technical Parameters

Model		C Module	F Module	V Module		CB Module
Model		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 1	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 Gas-insulated Switchgear Structural View

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 Switchgear Sectional Drawing

Frequently Asked Questions (FAQ)

What are the main applications of the SafeRing-12 switchgear?

SafeRing-12 is designed for 12kV and 24kV medium-voltage secondary distribution networks, compact substations, light industrial systems, and commercial installations needing reliable power distribution.

What level of ingress protection (IP) does the gas chamber offer?

The stainless steel gas chamber provides an IP67 protection rating, ensuring all high-voltage live parts are completely sealed against dust, water immersion, and harsh external environments.

Can the SafeRing-12 switchgear be expanded on site?

Yes, multiple expansion options are supported, including left extension (I), right extension (D), and dual-side extensions (ID) through external busbar connectors without handling SF6 gas on site.

What is the gas leakage rate and maintenance requirement?

With an annual leakage rate of ≤0.2% per year and sealed pressure system technology, the switchgear operates virtually maintenance-free throughout its service life.

Which international standards are met by this equipment?

The system conforms strictly to key international standards including IEC 60298, IEC 60265, IEC 60129, IEC 60694, and IEC 60056, alongside national GB standards.

Wholesale SafeRing-12 Fully insulated inflatable ring switchgear with Insulation Protection Manufacturers, Companies

Product Description

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