TGXR6-24 series switchgear has standard module units and fixed combination module units. Multiple combinations can be realized through the selected extended busbars to achieve full modularization. The extended busbars are fully insulated and shielded to ensure high reliability and safety. The rich combinations of modules not only meet the needs of network nodes and end users, but also meet the needs of flexible use of compact switchgear in various secondar substations.
SF6 fully insulated ring main unit complies with IEC 62271, IEC 60420, GB/T 3906, and GB/T 11022 standards.
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TGXR6-24KV SF6 Ring Main Unit Technical Parameters
| No. | Item | Unit | Load switch unit | Combined apparatus unit | Circuit breaker unit | ||
| 1 | Rated voltage | kV | 24 | 24 | 24 | ||
| 2 | Rated freq. | Hz | 50 | 50 | 50 | ||
| 3 | Rated current | A | 630 | 80 (dependin g on the current of fuse) | 630 | ||
| 4 | Rated insulati on level | 1 minute power frequency withstand volage | Phase-to-phase, phase-to-ground | kV | 65 | 65 | 65 |
| Break | 79 | 79 | 79 | ||||
| Control and aux. circuit | 2 | 2 | 2 | ||||
| Lightning impulse withstand voltage | Phase-to-phase, phase-to-ground | 125 | 125 | 125 | |||
| Break | 145 | 145 | 145 | ||||
| 5 | Rated short-time withstand current | kA/s | 25/4 | — | 25/4 | ||
| 6 | Rated peak withstand current | kA | 63 | — | 63 | ||
| 7 | Rated short-circuit making current | kA | 63 | Limited by high-volta ge fuse | 63 | ||
| 8 | Rated short-circuit breaking current | kA | — | Limited by high-volta ge fuse | 25 | ||
| 9 | Rated transfer current | A | — | 1200 | — | ||
| 10 | Rated active load breaking current | A | 630 | — | — | ||
| 11 | Rated closed-ring breaking current | A | 630 | — | 630 | ||
| 12 | Mechanical life | Load switch / circuit breaker | Times | 5000 | 5000 | 10000 | |
| Isolating switch / grounding switch | 3000 | 3000 | 3000 | ||||
| 13 | Loop resistance | μΩ | ≤150 | —— | ≤150 | ||
| 14 | Rated charge pressure (gauge pressure at 20℃) | MPa | 0.04 | 0.04 | 0.04 | ||
| 15 | Annual relative leakage rate of gas | Yearly | ≤0.01% | ≤0.01% | ≤0.01% | ||
| 16 | Protection grade | Cabinet body | IP4X | IP4X | IP4X | ||
| Gas box | IP67 | IP67 | IP67 | ||||
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Zhejiang Tengen Electric Co., Ltd.
Sulv Industrial Zone, Liushi Town, Yueqing City, Zhejiang Province, China, 325699
+86 21 3119 8727
marketing@tengen.com.cn
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