Product name: BQX52 series of explosion-proof box Frequency (Ⅱ B) 

 Scope 
 1 and Zone 2 dangerous places. 
 IIA, IIB group explosive atmosphere. 

 Type Meaning 
 Features 
 BQX52 Motor Variable Speed ??box can change its output frequency to adjust the speed of an ordinary three-phase asynchronous motor, to the requirements of production technology 
 Or to achieve the purpose of saving, saving rate of 30% -60%, since the software can also be used as motor controllers, also available through sensors, transmitters and other control circuit 
 Closed Loop System. Installation is easy, balance without shock current (soft start), power capacity could be greatly reduced, constant power factor, along with fault indication 
 And other functions. 
 1, over current protection, short circuit protection, over voltage, under voltage protection, instantaneous power failure protection and definitely phase protection. 
 2, figures show that the frequency, speed and load rate and current. 
 3, you can manually adjust the frequency. Can be set to speed by the time the characteristic curve. Are given by the DCS system to control the frequency of the signal. 
 The product of governor for the imported components. Cabinet is also equipped with ammeter, voltmeter, automatic air switch, light, 
 Exchanges and contacts, the frequency adjusting signal and start and stop buttons. To the technological requirements of different users according to the design, selection and preparation of a variety of devices 
 Appropriate method of operation. 
 4, conduit or cable wiring. 
 5, in line with GB3836-2000, IEC60079 standard request. 

 Main technical parameters 

 Product Type 
 Motor Power (kw) 
 Input Voltage (V) supply line current (A) L drive the maximum instantaneous current (A) Ex marks the introduction of plant protection class specifications (G ") Cable diameter (Φmm)) 
 BQX52-4 4 380 16 9.5 Exd IIB T4 IP54 1 12-19 
 BQX52-7.5 7.5 25 16 
 BQX52-11 11 36 22 
 BQX52-15 15 45 30 1 1 / 2 18-26 
 BQX52-22 22 60 44 
 BQX52-30 30 79 60 2 26-34 
 BQX52-37 37 94 72 
 BQX52-45 45 112 85 
 System diagram 

 Outline and installation size