Claire
Mr.Fu
Claire
China Gas Insulated Ring Main Unit (RMU) Suppliers - SF6 Sealed Switchgear Factory for Reliable Power Distribution
Type Designation
| 1 | Manufacturer Code |
| 2 | Model Type |
| 3 | Rated Voltage: 40.5 — Rated voltage 40.5KV |
| 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: 2500 — Rated Current 2500A; 3150 — Rated Current 3150A |
| 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 |
Technical Parameters
| Name | Unit | Parameter | ||||
| Rated voltage | kV | 12 | 40.5 | |||
| Rated current | A | 1250–3150 | 1250–2500 | |||
| Rated frequency | Hz | 50 | ||||
| Rated short-time withstand current | kA/s | 25, 31.5 | ||||
| Rated peak withstand current | kA | 63, 80 | ||||
| Rated short-circuit current duration | s | 4 | ||||
| Rated short-circuit breaking current | kA | 25, 31.5 | ||||
| Rated short-circuit making current | kA | 63, 80 | ||||
| Duration of arcing | s | 0.5 | ||||
| Mechanical life | Circuit breaker | Times | 2000 | 10000 | ||
| Isolating switch | 3000 | |||||
| Earthing switch | 3000 | |||||
| Electrical life of circuit breaker | Times | 30 | ||||
| Rated inflation pressure (20℃ gauge pressure) | MPa | 0.05 | ||||
| Minimum functional pressure (20℃ gauge pressure) | 0.03 | |||||
| Annual leakage rate of SF₆ gas | ≤0.5% | |||||
| Rated insulation level | Rated power frequency 1min withstand voltage (effective value) | Phase to phase | kV | 42 | 95 | |
| Isolation fracture, vacuum fracture | 48 | 118 | ||||
| Rated lightning impulse withstand voltage (peak value) | Phase to phase | 75 | 185 | |||
| Isolation fracture, vacuum fracture | 85 | 215 | ||||
| Auxiliary control circuit | Rated voltage | V | DC: 110, 220 AC: 110, 220 | |||
| 1min power frequency withstand voltage | 2000 | |||||
| Cabinet protection grade | Cabinet shell | IP4X | ||||
| Inflatable compartment | — | IP65 | ||||
| Category of loss of operation continuity | — | LSC2B | ||||
| Temperature rise test | A | 1.1Ir | ||||
| Main circuit resistance | 1250 | μΩ | 85 | 100 | ||
| 2000 | 65 | |||||
| 2500 | 60 | 60 | ||||
| 3150 | 50 | |||||
| Partial discharge | Test voltage | kV | 1.1×12/√3 | 1.1×40.5/√3 | ||
| Single insulating element | pC | ≤3 | ||||
| Complete machine | ≤50 | |||||
| Service life | Year | ≥30 | ||||
Product Display
Outline and Structure Diagram of Switch Cabinet
| 1. Small bus room | 11. CM-35 arrester |
| 2. Instrument room | 12. Pressure release channel |
| 3. Inflatable compartment of main bus | 13. Cable plug |
| 4. Station disconnector | 14. Cable socket |
| 5. Operating mechanism room | 15. Test socket plug |
| 6. Circuit breaker | 16. Test socket |
| 7. Inflatable compartment of circuit breaker | 17. Branch bus |
| 8. Cable chamber | 18. Pressure relief device |
| 9. Current transformer | 19. Main bus |
| 10. Cable | 20. Bus coupler socket |
| 21. Bus coupler | |
|
Note: a (cabinet width): 600mm, 800mm; b (cabinet depth): 12kV depth is 1420mm; The depth of 40.5kV is 1620mm. | |
Ordering Notice
Product operating site and special requirements:
1. Provide product ordering drawings, which should include wiring diagrams and indicate transformer capacity, main component model specifications, distribution branch circuits, and capacity.
2. When it is necessary to configure electric energy metering and reactive power automatic compensation devices, the requirements for the configuration of the metering meter and transformer should be provided, and the capacity of the compensation capacitor should be indicated.
3. Specify the requirements for surface treatment of the product.
Frequently Asked Questions
What is the rated voltage range of the SafeRing-40 switchgear?
The SafeRing-40 series supports rated voltages of 12kV and 40.5kV, making it suitable for a wide range of medium-voltage distribution applications. The rated current ranges from 1250A to 3150A depending on the voltage level.
What cabinet types are available in the SafeRing-40 series?
The series includes multiple cabinet types: C (Load Switch Cabinet), F (Fuses Switchgear Cabinet), V (Vacuum Circuit Breaker Cabinet), M (Measuring Cabinet), SV/SL (Bus Sectionalizing Switchgear), and PT (PT Cabinet). These can be combined in co-enclosure configurations to meet various substation requirements.
What is the protection grade of the SafeRing-40 switchgear?
The cabinet shell achieves a protection grade of IP4X, while the inflatable compartment achieves IP65, ensuring reliable protection against dust and moisture ingress in demanding installation environments.
What insulating gas is used, and what is the leakage standard?
The SafeRing-40 uses SF₆ (sulfur hexafluoride) gas as the insulating medium. The rated inflation pressure is 0.05 MPa (gauge pressure at 20°C), with a minimum functional pressure of 0.03 MPa. The annual leakage rate is strictly controlled to ≤0.5%, ensuring long-term insulation performance.
How long is the service life of the SafeRing-40, and what is the mechanical life of its key components?
The designed service life of the SafeRing-40 is ≥30 years. In terms of mechanical life, the circuit breaker supports 2,000–10,000 operations, while both the isolating switch and earthing switch are rated for 3,000 operations. The electrical life of the circuit breaker is 30 rated short-circuit breaking operations.
What information is required when placing an order for the SafeRing-40?
When ordering, customers should provide: the product operating site conditions and any special requirements; ordering drawings that include wiring diagrams, transformer capacity, main component model specifications, and distribution branch circuit capacity; configuration requirements for energy metering and reactive power compensation devices (if applicable); and any specific requirements for surface treatment of the product.