Product features and field of application
Widely used cases:
Applicable for distribution station, substation, and other places of industrial and mining enterprises for protection and control of electrical equipment.
Main functions:
Opening and closing load current and closed-loop current
Handling unloaded transformer and cable charging current
With short-circuit current closing capability
Convenient operation:
Supports both manual and electric operation, enabling convenient remote control functions.
Working conditions
Altitude: ≤1000m
Ambient temperature: Maximum +40℃, minimum -25℃ (it is allowed to store and transport at -30℃)
Air humidity:
Daily average value not exceeding 95%
Monthly average value not more than 90%
Pollution degree: Grade I
Seismic intensity: Less than 8 degrees of earthquake intensity
Vibration and pollution: There is no frequent and intense vibration. The ambient air does not contain corrosive or flammable gases and water vapor pollution
Technical Parameter
| No. | Item | Unit | Data | ||
| FZN25-12DL/T630-20 | FZRN25-12DL/T20O-31.5 | ||||
| Rated voltage | KV | 12 | |||
| 2 | Rated current | A | 630 | 200 | |
| 3 | Rated frequency | HZ | 50 | ||
| 4 | Rated insulation level | 1 min power frequency withstand voltage | KV | Arc chamber between open contacts 30;To earth,phase to phase 42 lsolation between open contacts 48 | |
| Lightning impulse withstand voltage | KV | To earth,phase to phase 75;Isolation between open contact 85 | |||
| 5 | Rated short-time withstand current | KA | 20 | ||
| 6 | Rated short circuit duration | S | 4 | ||
| 7 | Rated peak withstand current | KA | 50 | ||
| 8 | Rated active load breaking current | A | 630 | ||
| 9 | Rated closed-loop breaking current | A | 630 | ||
| 10 | Rated cable charging breaking current | A | 10 | ||
| 11 | Rated breaking no-load transformer capacity | KVA | 1600 | ||
| 12 | Rated short-circuit breaking current | KA | 一 | 31.5 | |
| 13 | Rated transfer current | A | 2000 | ||
| 14 | Fuse type | SDLAJ-12、XPNT1-12 | |||
| 15 | Impactor output energy | J | 1+0.5 | ||
| 16 | Rated short circuit closing current | KA | 80 (Expected peak) | ||
| 17 | Earthing switch rated short-time withstand current | KA | 20 | ||
| 18 | Earthing switch rated short circuit duration | S | 2 | ||
| 19 | Earthing switch rated peak withstand current | KA | 50 | ||
| 20 | Auxiliary circuit rated voltage | V | ≌ 220V、≌ 110V | ||
| 21 | Mechanical life | Times | 10000 | ||
Environmental
FZN25-12DL/T630-20 Indoor high-voltage vacuum load switch
Rated voltage 12kV, three-phase AC 50Hz, for use in industrial and mining distribution stations, load switching and protection.
Main functions: Switching and closing load current, conducting no-load transformer and cable charging current.
Operation mode: Manual and electric operating, convenient for “three remote” function implementation.
With earthing function: Equipped with a grounding switch, it can safely close short circuit current.
FZR25-12DL/T200-31.5 Load switch-fuse combination appliance
Designed for short-circuit protection and load control, applicable for 12kV three-phase AC 50Hz indoor system
Function characteristic:
Short circuit protection and load current control
Equipped with an earthing switch, supports short-circuit current closing. Operational mode: manual and electrical satisfies intelligent control needs.
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