HV AC SF6 circuit breaker 40.5kv

General:

Outdoor self-energy high-voltage AC SF6 circuit breaker for outdoor three-phase high-voltage AC equipment, AC 50Hz, the maximum voltage of 40.5kV.It is suitable for the control and protection of HV supply and transformation lines in power station, converting stations, and industrial and mining enter-prises.

Service Environment

• Ambient air temperature -25℃(-40℃)~+40℃;

• Altitude ≤2500m(2000m);

• Wind speed ≤34m/s;

• Daily temperature difference ≤25℃;

• Sunshine intensity ≤1000W/m;

• Seismic horizontal resistance 8 degrees: horizontal acceleration 0.2g, vertical acceleration 0.1g;

• Ice thickness ≤10mm;

• The degree of air pollution does not exceed Class IV in GB/T5582;

• Outdoor installation.

• Note: The value in brackets is the parameter when the circuit breaker air pressure is 0.33MPa.

Key Feature

• Meet the requirements of GB1984-2003 "High voltage AC Circuit breaker" and IEC 62271-100 "High voltage AC circuit breaker".

• The circuit breaker uses SF6 gas as insulation and arc extinguishing medium, adopts self-energy arc extinguishing principle, and uses DCT-126P type spring operating mechanism, which has the characteristics of strong breaking ability, small operation power and high reliability.

Technical Data

• Name	Unit	Data
  Rated current	A	630
  Rated closing operating voltage	V	AC220
  Rated frequency	Hz	50
  Rated opening operating voltage	V	AC220
  Peak value of rated closing current	KA	50
  Different closing periods		≤2
  4s Rated heat stable current	KA	20
  SF6 gas rated pressure (gauge pressure)	Mpa	0.01
  Rated energy storage motor voltage	V	AV220
  Rated voltage	KV	40.5
  Rated short-circuit breaking current	KA	50
  Mechanical life	Times	10000
  Rated dynamic stable current （peak）	KA	20

Drawing