Model BPJ2/3 Mine-used Frequency-converter for AC Motor with
Flameproof and I.S., with its core parts imported from ABB, is a
new type of mine-used frequency-converter for 660 V motor.
The frequency-converter utilizes technology of direct torque
control or vector control, is suitable for AC 660 V, 50 Hz power
supply system, can adjust speed of three-phases AC motor of 300 A
and under 300 A, realize smooth start, stop and speed adjusting of
motors with various loads, and completely eliminate mechanical and
electrical shock and extend life of equipment.
The frequency-converter utilizes advanced technology of vacuum
heat-pipe dissipation, compared to water or oil dissipation, it
needs less maintenance and it is more suitable for severe
environment in mine underground and effectively resolves
dissipation problem of high-power modules.
The frequency-converter has flexible control modes. It has three
modes of frequency convert starting and running, frequency convert
starting and industrial frequency running, direct starting and
running under special condition; it has communication interfaces
for local, remote and centralized control; it has power balance
adjustment function for automatic adjusting of multiple motors,
without help of speed-control hydraulic coupler, CST or other
mechanical equipment; it can realize energy-saving running with
4~20 mA current or 0~10 V voltage supplied by outer sensor, that
is, according to real load, automatically control rotation speed of
motor and reduce wear of motor; it has simple structure, with
square flameproof casing, fast-open door structure, exchangeable
handcart-type vacuum contactor, very convenient for installation,
checking and maintenance. |
