... differential blower 4BHB610-H36Model nameFrequency(Hz)Rated power(KW)Rated voltage(V)Rated current(A)Maximum airflow(m³/h)Maximum vacuum ... Use worldwide The BHB series side channel vacuum pump feature voltage range motors for 50Hz and 60Hz in protection class IP ... the factory,such as noload test,impulse winding test,frequency withstand voltage test etc.for motor.Pressure,airflow,noise test for blower ...