BPJ series mining explosion-proof and intrinsic safety AC frequency converterDetailed product description：

The BPJ series mining explosion-proof and intrinsic safety AC frequency converter is a new generation of mining frequency conversion speed regulation product developed and launched for the matching explosion-proof motor of high-power equipment in coal mines. The product adopts advanced power electronic IGBT, heat pipe heat dissipation, and air cooling combined technology to achieve functions such as heavy-duty starting, power balance, variable frequency speed regulation, direction control, soft start and soft stop, energy feedback, etc. for underground motors in coal mines. It completely eliminates the mechanical and electrical shocks that occur in conventional products, extends the service life of equipment, and achieves energy-saving and consumption reducing effects.
The BPJ series mining explosion-proof and intrinsic safety AC frequency converter has flexible control methods, rich communication interfaces, and can automatically adjust the power balance of multiple motors. It is an ideal substitute for mechanical equipment such as speed regulating hydraulic couplings and CST controllable start transmission devices; It can achieve four quadrants of the motor and has energy feedback function for conveying equipment such as downward belt conveyor and passenger steel wire rope traction belt conveyor. It converts the potential energy during downward movement into electrical energy and feeds it back to the power grid. The right electrical generates braking torque, which not only solves the problem of "flying" when the braking torque is insufficient, but also improves the safety of the system; The frequency converter can achieve energy-saving operation, that is, automatically control the speed of the motor according to the actual load situation, and reduce the loss of motor equipment; The explosion-proof shell structure adopts a quick opening door structure, providing convenience for installation, maintenance, and repair.

BPJ series mining explosion-proof and intrinsic safety AC frequency converter product classification

Serial Number	model	Product Features
one	BPJ1-200/660K	Four quadrant operation; Power: 200kW; Voltage: AC660V;
	DKB1-200/660L	Filter reactor; Power: 200kW; Voltage: AC660V;
two	BPJ1-200/660	Two quadrant operation; Power: 200kW; Voltage: AC660V;
three	BPJ1-400/1140	Two quadrant operation; Power: 400kW; Voltage: AC1140V;

Characteristics of BPJ series mining explosion-proof and intrinsic safety AC frequency converter:

The four quadrant operation mode has an energy feedback function, which converts the potential energy during downward movement into electrical energy and feeds it back to the power grid;  
Multiple control methods: no PG vector control, PG vector control, torque control, V/F control;  
Capable of starting torque function: with PG vector control OHz/180% (VC), without PG vector control 0.5Hz/150% (SVC);  
Realize soft start and soft stop for heavy loads, with low starting current, stable starting speed, and minimal impact on the power grid;  
The S-shaped curve working mode can be flexibly adjusted according to the on-site working conditions, reducing the dynamic tension on the equipment during start-up;  
Up to 27 types of operation control and protection, such as overcurrent, overvoltage, overload, undervoltage, phase loss, short circuit, etc;  
The allowable fluctuation range of rated voltage is -15% to+10%, which is suitable for the underground power supply situation in coal mines;  
Built in PID regulator, can be matched with various sensors to form closed-loop control;  
Equipped with standard communication interfaces and optional expansion cards according to customer requirements;  
Reasonable software calculation methods achieve outstanding energy-saving effects.

Reference Table for Selection of Mining AC Inverter

Application scenarios Model	Endless rope winch	belt	water pump	Inclined shaft lifting	Emulsion pump	Monkey car	coal feeder
BPJ1-200/660K	√	√	√	√	√	√
BPJ1-200/660		√	√		√		√
BPJ1-400/1140		√	√		√		√
Four quadrant application	Coal mine infinite rope winch system, inclined shaft lifting system, downward conveyor belt system, monkey car system
Two quadrant application	Coal mine water pump system, upward transportation and roadway belt system, emulsion pump system, coal feeder system,