1.Top Safety. Fully insulated enclosed structure (IP67), enhanced phase separation design, independent phase switch monitoring – meets strict procurement safety standards.
2.All-Environment Adaptable. Comewill factory high quality 12kV solid insulated switchgear SF6 ring main unit works in low/high temperature, high altitude, high humidity, corrosion, low-lying, explosion-proof zones – no procurement scenario limits.
3.Flexible & Convenient. Standard modular design for easy expansion/modification/replacement. Compact size simplifies transport and post-procurement maintenance.
4.Eco-Friendly. Replaces SF6 with epoxy resin – balances performance and green procurement compliance.
1.12kV solid insulated switchgear SF6 ring main unit made in China is suitable for use in environments with an altitude not exceeding 2000 meters.
2.It operates reliably within the relative temperature range of -40℃ to +55℃.
3.It can withstand an average daily humidity of no more than 95% and an average monthly humidity of no more than 90%.
4.The design of 12kV solid insulated switchgear SF6 ring main unit can withstand seismic intensity up to 8 on the Richter scale.
| Name | Unit | Load switch unit | Combined apparatus unit | Circuit breaker unit | |
| Rated voltage | kV | 12 | |||
| Rated freq. | Hz | 50 | |||
| Rated current | A | 630 | ≤125 | 630/1250 | |
| Rated insulation level | Power frequency withstand voltage(phase-to-phase or phase to ground) | kV | 42 | ||
| Power frequency withstand voltage(between open contacts) | 48 | ||||
| Power frequency withstand voltage(control and auxiliary circuits) | 2 | ||||
| Lightning impulse withstand voltage(phase-to-phase or phase to ground) | 95 | ||||
| Lightning impulse withstand voltage(between open contacts) | 110 | ||||
| Rated short-time withstand current | Main circuit (4s/2s) | kA | 20/25 | — | 20/25 |
| Grounding circuit(2s) |
|
17.4/21.7 | — | 17.4/21.7 | |
| Rated peak withstand current | Main circuit | kA | 50/63 | — | 50/63 |
| Grounding circuit | 43.5/54.3 | — | 43.5/54.3 | ||
| Rated short-circuit breaking current | kA | — | 31.5 | 20/25 | |
| Rated short-circuit making current | kA | 50/63 | 80 | 50/63 | |
| Rated transfer current | A | — | 1600 | — | |
| Mechanical life | Load switch / circuit breaker | Times | 5000 | 5000 | 10000 |
| Isolating switch / grounding switch | Times | 3000 | 3000 | 3000 | |
| Rated pressure of SF6 gas(relative value at 20℃) | Rated charge pressure | MPa | 0.035 | ||
| Min. functional charge pressure | 0.02 | ||||
| Protection grade | Cabinet body |
|
IP4X | ||
| Gas box |
|
IP67 | |||
| Annual relative leakage rate of gas | %/Y | ≤0.05 | |||
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