PRODUCTS

Voltage level
6KV/10KV
Motor type
squirrel cage motor
Lift and Type
Applicable to various hoists such as single rope, multi rope, shaft, inclined shaft, etc.
High-voltage auxiliary cabinet performance characteristics
1. The high-voltage auxiliary cabinet has protection functions such as overcurrent and short circuit.
2. The high-voltage auxiliary cabinet includes functional units, control and protection, and instrumentation equipment. Appropriate space is reserved for each device for easy access and maintenance. The high-voltage auxiliary cabinet operates safely under the maximum short-circuit condition, and can withstand the electrical and electrical equipment caused by it. mechanical stress.
3. There is an electrical lock between the two incoming lines, and each device in the cabinet works continuously and has the "five-proof" function (to prevent pushing and pulling movable parts under load, to prevent wrong opening/closing of circuit breakers, to prevent live grounding switches, Prevent the grounding switch from sending electricity in the grounding position and prevent it from entering the live isolation by mistake).
4. The microcomputer comprehensive protection device is installed in the incoming cabinet, which can display the voltage, current, active power, reactive power, power factor, etc. Once the circuit breaker exceeds the specified value, the circuit breaker will automatically break to ensure the normal and safe operation of the hoist.
Technical Features
1. The digital intrinsic safety circuit realizes the two-wire operation of the inclined shaft hoist.
2. The domestic high-voltage inverter with the unit series multiplexing technology is applied to the mine hoist.
3. Frequency conversion speed regulation realizes ramping and increasing energy consumption braking into power generation feedback braking.
4. Adopt vector control technology to realize the functions of low speed, large torque and large starting torque.
5. Give full play to the digitization, networking and computing functions of PLC, so that the hoist has more perfect software and hardware protection functions, and each main protection realizes a two-wire system.
Main performance characteristics of high voltage inverter
1. Input current harmonics <3%, meeting IEEE519-1992 and GB/T14549-93 standards.
2. Input power factor 0.95 (>20% load).
3. Advanced PWM rectification energy feedback technology, lower harmonics of network measurement current, energy can flow in both directions, more energy-saving and more environmentally friendly.
4. Optional motor control modes: speed sensorless vector control mode, U/f open loop and U/f closed loop control mode.
5. Speed ​​sensorless vector control performance: the speed regulation range is 100:1, the static speed accuracy is 0.5%, the starting torque is 180% of the rated torque; the dynamic torque response time is less than 100 milliseconds.
6. Automatic detection of stator and rotor parameters of asynchronous motor.
7. Various fault classification processing to ensure the continuous operation of the equipment as much as possible.
8. Within the range of power grid fluctuations, the constant torque boost will not affect the load boosting situation due to power grid fluctuations.
9. The soft start of the motor is realized, the starting torque is large, and the load capacity is strong.