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Help CenterZBF (R) N-12d Indoor High Voltage SF6 Load Switch
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| number | name | Company | parameter | |||
| Zbfn-12d / t630-20 load switch | ZBF (R) n-12d / t125-31.5 | |||||
| Load switch fuse combination | ||||||
| 1 | Rated voltage | kV | 12 | |||
| 2 | Rated frequency | Hz | 50 | |||
| 3 | Rated current | A | 630 | 125 | ||
| 4 | Rated insulation level | 1 min power frequency withstand voltage | kV | To ground, phase to phase 42 fracture 48 | ||
| Lightning impulse withstand voltage | kV | To ground, phase to phase 75-85 | ||||
| Rated withstand voltage at zero gauge voltage | kV | 12 | ||||
| 5 | Rated thermal stability current (3S) | kA | 20 | |||
| 6 | Rated dynamic stability current | kA | 50 | |||
| 7 | Rated short circuit making current | kA | 50 | 80 (expected) | ||
| 8 | Rated closed-loop breaking current | A | 630 | |||
| 9 | Rated Active load breaking current | A | 630 | |||
| 10 | Rated cable charging breaking current | A | 10 | |||
| 11 | Earth fault current | A | 5 | |||
| 12 | Line and cable charging current under ground fault condition | A | 20 | |||
| 13 | Rated short circuit breaking current | kA | 31.5 (expected) | |||
| 14 | Rated transfer current | A | 1700 | |||
| 15 | Fuse type | SKLDJ-12/125A* | ||||
| 16 | Energy output of impactor | J | 1±0.5 | |||
| 17 | Rated thermal stability current of grounding switch (3S) | kA | 20 | |||
| 18 | Rated dynamic stable current of grounding switch (peak value) | kA | 50 | |||
| 19 | Rated short circuit making current of grounding switch | kA | 50 | |||
| 20 | Mechanics | Load switch | second | 5000 | ||
| life | Earthing switch | 2000 | ||||
| 21 | SF6 gas pressure (relative pressure at 20 ℃) | MPa | 0.05 | |||
| 22 | Annual air leakage rate | 1% | ||||
| 23 | Synchronization of opening and closing | m s | ≤3 | |||
| 24 | Loop resistance | μΩ | 100 | 150 | ||
| 25 | Maximum torque of manual operation | N·m | ≤75 | |||
| 26 | Rated operating voltage (electric) | V | AC220/110，DC220/110，DC48/24 | |||
Product introduction
ZBF (R) n-12d indoor high voltage SF6 load switch is an indoor switchgear with rated voltage of 12kV. SF6 gas is used as arc extinguishing and insulating medium, including three working positions of closing, opening and grounding. It has the characteristics of small volume, convenient installation and strong adaptability to environment.
The combination of ZBF (R) n-12d indoor high voltage SF6 load switch and other electrical components can realize the control and protection functions, and can be used as the control and protection of electrical equipment in industrial and mining enterprises, civil power supply and secondary substations. Among them, ZBF (R) n-12d load switch fuse combination matches with transformer protection characteristics, which is especially suitable for ring network power supply unit.
Standards adopted
Zbfn-12d / t630-20 type indoor high voltage SF6 load switch (hereinafter referred to as load switch) and ZBF (R) n-12d / t125-31.5 type load switch fuse combination (hereinafter referred to as combination) meet the national standards gb3804-2004 "3.6 ~ 40.5kV AC high voltage load switch" (eqviec60265-1:1997) and gb16926-1997 "AC high voltage load switch fuse combination" (eqviec420:1990).
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