● General Description
● Main usage,applying ambient conditions
VIB type indoor high voltage vacuum circuit breaker(Hereinafter referred to as vacuum circuit breaker)are used for 12kV rated voltage and AC 50Hz indoor switch equipment components.The products meet standard of GB1984-2003 HV AC Vacuum Circuit Breaker,JB3855-1996 3.6~40.5kV Indoor AC High Voltage Vacuum Circuit Breaker,DL/T403-2000 Order Technical Condition of 12kV~40.5kV Vacuum Circuit Breaker and IEC62271-100:2001 HV AC Vacuum Circuit Breaker,etc.Circuit breaker used as protection and control unit of power design in electric network and industrial and mining enterprises,can be used for situation of switching various types of load and frequent operation and repeated breaking short circuit current.
This type VCB uses new type operating mechanism of VCB.Embed vacuum interrupter and main circuit's components as a integration by adopting embedded pole of international brand for primary part,so as to protect vacuum interrupter from crash,dust and moist.It has good environmental adaptability,so that reducing operation and maintenance cost greatly and realizing maintenance free of primary part and few maintenance of operating mechanism.The integrated
● Applying ambient conditions
1.Ambient temperature:Max.temperature:+40℃,and average temperature within24h should no more than 35℃Min.Temperature:-20℃
2.Relative humidity:The average relative humiditydaily:=95%
The average relative humidity monthly:=90%
The average vapor pressure daily:=2.2kPa
The average vapor pressure monthly:=1.8kPa
3.The height above sea level:=2000m
● Technical parameter
Main technical parameters of VIB series indoor VCB(refer to Table 1)
● Outline drawing and installation dimension
● Recommended matched dimension of VCB and switchgear