FZN25/FZRN25-12D series indoor AC high-voltage vacuum load switch-fuse combination electrical appliances
FZN25-12D indoor AC high-voltage vacuum load switch (hereinafter referred to as load switch) and FZRN25-12D indoor AC high-voltage vacuum load switch-fuse combined electrical appliance (hereinafter referred to as combined electrical appliance) are three-phase AC 50Hz, 12KV power distribution system control and protection internal devices, widely used in industrial and mining enterprises and urban and rural building distribution station sites, combined electrical appliances are composed of load switches and fuses, combined electrical appliances for the protection of transformers and other electrical equipment.
Vacuum interrupter arc extinguishing, stable and reliable performance, long electrical life, high number of breaking, strong closing and breaking ability:
It integrates the switch body and the operating mechanism, integrates the isolation switch, the load switch and the grounding switch, with compact structure and small size:
The direct-acting isolation fracture and the vacuum interrupter are connected in series, and the unique operation program is linked, and the operation can be completed at one time:
Load switches, grounding switches, valves and switch cabinets are interlocked according to the "Bachen" spicy machinery to prevent misoperation, safe and reliable:
The spring energy storage operating mechanism can be opened and closed electrically, or manually opened and closed, which is convenient for realizing the requirements of remote control: the power supply for opening and closing operation can be used for both AC and DC.
| serial number | The name of the parameter | unit | data | ||
| FZN25-12D/T630-20 | FZN25-12D/T125-31.5 | ||||
| 1 | Rated voltage | kW | 12 | ||
| 2 | Current rating | A | 630 | ≤200 | |
| 3 | Rated frequency | Hz | 50 | ||
| 4 | Rated insulation level | 1min power frequency withstand voltage | kV | Interrupter 30: to the ground, 75 between phases: isolation fracture 48 | |
| Lightning impulse withstand voltage (peak) | 75 to the ground and phase, and 85 to isolate the fracture | ||||
| 5 | Rated for short-time resistance (thermally stable) | kA | 20 | 31.5 | |
| 6 | Rated short-circuit duration | s | 4 | 4 | |
| 7 | Rated peak withstand current (dynamic stability) | kA | 50 | 80 | |
| 8 | Rated active load breaking current | A | 630 | 125 | |
| 9 | Rated closed-loop interrupting current | A | 630 | 125 | |
| 10 | Rated cable charging breaking current | A | 10 | ||
| 11 | Rated capacity of the transformer for on/off air cutting | kVA | 1600 | ||
| 12 | Rated short-circuit interrupting current | kA | 20 | 31.5 | |
| 13 | Rated transfer current | A | 2000 | ||
| 14 | Fuse model | SDLAJ-12/SFLAJ-12 | |||
| 15 | Impactor output | J | 2024-2-5 | ||
| 16 | Rated short-circuit closing current (peak) | kA | 50 | 80 | |
| 17 | Grounding switch rated for short-time withstand current (thermally stable) | kA | 20 | ||
| 18 | The grounding switch is rated for short-circuit duration | s | 2 | ||
| 19 | Rated peak withstand current of grounding switch (dynamic stability) | kA | 50 | ||
| 20 | Auxiliary circuit voltage rating | V | 220 | 110 | |
| 21 | Mechanical life | times | 10000 | ||
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Tel：+86 15538537280
Email：lycnelectric@163.com
Add：No. 9 Duyu Street, Luolong District, Luoyang City, Henan Province
