1.used to control the soft start, soft stop and speed adjustment during operation of asynchronous motor 2.AC50HZ,660 or 1140V
Mining Explosion-proof &Intrinsically Safe AC Frequency Inverter
Purpose
It is a high technology product assembling vacuum magnetic starter, digital frequency
converting speed adjustment device and related cooling technology. It is used to
control the soft start, soft stop and speed adjustment during operation of asynchronous
motor of AC frequency 50HZ,rated voltage 660V or 1140V,with the good features of
starting current small, starting speed stable, starting time adjustable, impact on grid
small, starting performance reliable, especially with starting curves ”S” and linear.
The curves are optional according to the accurate working status, only to reduce the
dynamic tension on equipment during the starting. If used with bell conveyor ,it is
possible to decrease the belt strength requirement of conveyor, dropping the initial
investment, meanwhile, extending the usage life of conveyor. When the frequency
convertor works on line, it is possible to adjust the power voltage and frequency of
motor according to the load of motor, only to achieve the expected torque and energy
saving.
This product is mainly used to control the soft start, soft stop and operation process of
transportation equipment at the places of coal mine well, open-air mine, port wharf,
coal preparation plant, power generating factory.
Technical Features
It can promote the torque by times 1.5to2, achieving soft start, soft stop, reducing
starting current, meanwhile, it has two kinds of working typies of online and
short-time; when online type, the frequency converter can change the speed according
to its load; with belt checking function, when short-time type, it can carry soft start
and soft stop; Local and remote control is possible; when multi-motors interlocking,
the primary and subordination relation is adopted to finish the power balance during
the starting and operation; with protective functions of over current, short circuit,
grounding, phase loss, over voltage, under voltage, over load, over heart, outer
alarming and current leakage.
Technical Data
Input Voltage(V) | AC 660/1140,50/60HZ |
Output Voltage(V) | AC 660/1140 |
Starting Frequency(HZ) | 0.5-60 |
Screen Resolution (HZ) | 0.01 |
Intrinsically Safe Power: input voltage(V) | 220 |
Intrinsically Safe Max Breaking Voltage of Output(V) | DC18 |
Max Current of Output(A) | 0.5 |
Starting Time (S) | 1-300adjustable |
Working Type | Short-time ,on-line |
Braking Type | Power consumption braking, DC braking, feedback braking |
Low Frequency Turn | Automatic torque compensation, low speed full torque ,150%rated toru |
Accelerative &Slow Down Curves | Liner and “S” curve |
Cooling Method | Cool naturally below45KW, cool by heat tube 45-500KW |
Control method | Vectors control without speed sensor |
Ex-mark | Exd[ib]I |
Mining Explosion proof Intrisically safe type AC Inverter
