Kev Piav Qhia Luv:

HWS21-63 series yog ib qho ntawm cov khoom siv tiv thaiv rov qab tsis siv neeg tsim thiabtsim los ntawm sinoasian

thev naus laus zis, muab nrog ntau lub luag haujlwm (dhau qhov hluav taws xob tsis muaj zog, overcurrent, lub ntiaj teb xau, tiag tiag

zaub, rov txuas dua tshiab thiab cov kev hloov kho tau) hauv 40-60Hz, siv dav hauv cov chaw ib puag ncig ntawm

hluav taws xob, kev lag luam thiab kev lag luam