Title :
Experimental investigations of internal pressure in quenching chamber of low voltage MCCB
Author :
Lijun Wang ; Hongwu Liu ; Chonglong Ge ; Ruiliang Guan ; Lin Chen ; Shenli Jia
Author_Institution :
State Key Lab. of Electr. Insulation & Power Equip., Xi´an Jiaotong Univ., Xi´an, China
Abstract :
For a kind of commercial MCCB, arc current, arc voltage, internal pressure of arc extinguish chamber, and arc moving images under different breaking conditions have been measured respectively, based on ATiS BE12 data acquisition system, pressure sensors and high-speed camera. Based on Kistler sensor and electromagnetic screen cover, an arc extinguish chamber internal pressure measuring method has been established. Meanwhile, the influence of arc power, gassing material and outlet cover plate on pressure has been investigated. Experimental results show that the pressure waveform almost has a consistent trend with the arc power. The internal pressure has been improved apparently because of the presence of gassing material. The peak and rise rate of the pressure will be higher when there is a outlet cover plate and the pressure peak slightly ahead of the arc power peak.
Keywords :
arcs (electric); circuit breakers; data acquisition; pressure sensors; ATiS BE12 data acquisition system; Kistler sensor; arc current; arc extinguish chamber; arc moving images; arc power; arc voltage; breaking conditions; electromagnetic screen cover; gassing material; high-speed camera; internal pressure; low voltage MCCB; molded case circuit breakers; outlet cover plate; pressure sensors; quenching chamber; Circuit breakers; Current measurement; Limiting; Low voltage; Materials; Pressure measurement; Sensors;
Conference_Titel :
Electric Power Equipment - Switching Technology (ICEPE-ST), 2013 2nd International Conference on
Conference_Location :
Matsue
DOI :
10.1109/ICEPE-ST.2013.6804389
