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ZBF(R)N-12D SF6 load switch
ZBFN-12D indoor high-voltage SF6 load switch.
ZBF(R)N-12D indoor high-voltage SF6 load switch with fuse combined electrical apparatus.
Product Introduction
● ZBF (R) N-12D SF6 indoor high voltage load switch for indoor switchgear rated voltage of 12kV, as the arc extinction interrupter and insulation medium using SF6 gas, including closing / opening / earthing three work positions, has the advantages of small volume, convenient installation and strong adaptability to the environmental.
● ZBF (R) N-12D SF6 indoor h-v load switch equipped with other electrical components, can meet the function of control and protection, to control and protect electrical equipment in industrial, mining enterprises, and electric power substations. The ZBF (R) N-12D load switch with fuse combined apparatus matches with transformer protection characteristics, especially suitable for ring network power supply units.
Adopted and Conformed with Standards
ZBFN-12D/T630-20 type indoor high voltage SF6 load switch (hereinafter the load switch for short) and ZBF (R) N-12D/T125-31.5 type load switch with fuse composite electrical apparatus (hereinafter combined apparatus for short) in accordance with the China national standard
GB3804-2004 "3.6~40.5kV AC high voltage load switch (eqv IEC60265-1:1997) and
GB16926-1997 "AC high voltage load switch with fuse combined apparatus" (eqv IEC420:1990).
Technical characteristics / parameter
No. | Name | Unit | parameter | ||
ZBFN-12D/T630-20 type load switch | ZBF (R) N -12D/T125-31.5 Switch fuse combinations | ||||
1 | Rated voltage | KV | 12 | ||
2 | Rated frequency | Hz | 50 | ||
3 | Rated current | A | 630 | 125 | |
4 | Rated insulation level | Power frequency withstand voltage of 1 min | KV | to ground /inter phase 42, fracture 48 | |
Lightning impulse withstand voltage | KV | to ground /inter phase 75, fracture 85 | |||
Rated withstand voltage in zero gauge pressure | 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 breaking current for closed loop | A | 630 | | |
9 | Rated Active load drop-out current | A | 630 | | |
10 | Rated cable charging drop-out current | A | 10 | | |
11 | Ground fault current | A | 5 | | |
12 | Under the condition of grounding fault line and cable charging current | A | 20 | | |
13 | Rated short-circuit drop-out current | KA | | 31.5 (expected) | |
14 | Rated transfer current | A | | 1700 | |
15 | Fuse type | | None | SKLDJ-12/125A* | |
16 | Impactor output energy | J | | 1 + 0.5 | |
17 | Earthing switch rated thermal stability current (3S) | KA | 20 | | |
18 | The grounding switch rated dynamic stability current (peak) | KA | 50 | | |
19 | Rated short-circuit grounding switch making current | KA | 50 | | |
20 | Mechanics Life | Load switch | times | 5000 | |
Earthing switch | 5000 | ||||
21 | SF6 gas pressure (20℃ relative pressure) | MPa | 0.05 | ||
22 | Annual leakage rate | | 1% | ||
23 | The opening and closing synchronism | m s | Less than or equal to ≤3 | ||
24 | Loop resistance | μΩ | 100 | 150 | |
25 | Maximum torque for manual operation | N·M | Less than or equal to ≤75 | ||
26 | Rated operating voltage (electric motive) | V | AC220/110, DC220/110, DC48/24 | ||
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