Detailed introduction：

Product description

SFZN25-12D indoor AC high voltage vacuum load switch and SFZRN25-12D indoor AC high voltage vacuum load switch - fuse combination of three-phase AC 50Hz, 12kV power distribution system control and protection devices, widely used in industrial and mining enterprises and City building power distribution stations and other places. Combination of electrical equipment such as transformers and other electrical protection, the use of reliable than the circuit breaker, particularly suitable for ring, dual-radiation power supply unit and box-type substation.

Model and meaning

 

Structural features

○ This product uses vacuum interrupter arc, stable and reliable performance, long electrical life, high breaking frequency, closing, breaking ability, easy operation and maintenance.

○ melt switch body and operating mechanism in one. Set isolating switch, load switch, grounding switch in one. Compact structure, small size.

○ Direct-acting isolation interrupter and vacuum interrupter arranged in series, dynamic and thermal stability of high current parameters; unique procedures in accordance with the provisions of linkage, one-time operation.

○ Conical static contact, insulation cover and valve structure, completely separate the bus and load switch unit.

○ Vacuum load switch, grounding switch, valve, switch door, strictly according to the "five anti" mechanical interlock, to prevent misuse, safe and reliable.

○ spring storage-type operating mechanism can be electric sub-closing, can also be manually sub-closing operation, easy to achieve "three remote" requirements.

○ Sub-switching power supply can be AC and DC.

○ switch for the conventional side-mounted right-type operation can also be based on user needs to provide a positive operation or left operation.

Environmental conditions

○ Ambient air temperature: upper limit + 40 ℃; lower limit of 25 ℃ (allowing storage at -30 ℃);

○ Altitude: ≤ 1000M;

Air relative humidity: daily average of not more than 95%, the monthly average of not more than 90%;

○ Seismic intensity: not more than 8 degrees;

○ the surrounding air from corrosive or flammable gases, water vapor and other obvious pollution;

○ no frequent severe vibration place;

○ Pollution level: Ⅱ level.

The main technical parameters

Mechanical Characteristics of FZN25-12D Vacuum Load Switch and SFZRN25-12D Type Combination Electrical Apparatus

SFZN25-12D vacuum load switch and SFZRN25-12D-type combination of electrical main technical parameters