Claire
Mr.Fu
Claire
China Suppliers Factory MR-SafeRing-12: Fully Insulated Inflatable Ring Switchgear for 10-24kV Power Distribution
Type Designation
| 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
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 | Ω | ≤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
| 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 |
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.