Flameproof belt conveyor motors 0.69–11 kV, 315–2000 kW (including variable-frequency and with integrated 3.3 kV drive)
Flameproof motors for main and district belt conveyors of underground workings. The standard range is 315–1000 kW at 690–6000 V, and per the manufacturer's brochure up to 2000 kW and up to 11,000 V. Variable-frequency versions and a motor with an integrated 3300 V inverter are available.
- Power
- 315–1000 kW (standard range); up to 2000 kW (per the brochure)
- Voltage
- 690–6000 V (standard range); up to 11,000 V (per the brochure)
- Number of poles
- 4
- Mounting
- horizontal, foot-mounted
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The motors are intended for main and district belt conveyors of underground workings. The standard range covers powers of 315–1000 kW at voltages of 690–6000 V. The motors have 4 poles, horizontal foot-mounted design, class H insulation, a flameproof enclosure and forced ventilation. A belt conveyor runs for long periods with an almost constant load and needs a smooth start so as not to overload the belt and the drive. The design ambient temperature is 30 °C.
According to the manufacturer's brochure, conveyor motors are made with power up to 2000 kW at voltage up to 11,000 V. They can operate from a frequency converter down to low speeds, even at constant load torque. To maintain cooling as speed is reduced, independent ventilation units are installed.
Together with a partner, the manufacturer developed the first integrated 3300 V motor-inverter for future longwalls. The initial offer is as follows: 1200 kW on the shaft, 12-pulse input, cooling by mine water. Such a drive gives full torque control from zero to rated speed, a smooth start with a set time and lower shock loads. Up to 2.5 times rated torque is permitted at zero speed, and energy consumption is reduced. Controlled starting is especially useful for long conveyors, where a sharp start stretches the belt and loads the gearbox.
The motors are built to IEC standards. The certificates cover ATEX and IECEx, as well as the national mining systems TSA, MSHA, CSA, MA and TR CU, so the machines can be supplied to the main mining regions of the world. The motors are made for a specific conveyor, so dimensions, cooling method and voltage class are agreed with the drive project. The frequency converter with independent ventilation is selected together with the motor.
The item is close in purpose and voltage to the flameproof belt conveyor drive motors for 1140 V and 6 kV. For underground workings, important factors include explosion protection, resistance to dust and moisture, and the ability to run from a frequency converter without overheating. The final choice of motor depends on the drive power, the starting scheme and the ventilation conditions of the working, so the parameters are best agreed with the manager.
Technical specifications
| Power | 315–1000 kW (standard range); up to 2000 kW (per the brochure) |
|---|---|
| Voltage | 690–6000 V (standard range); up to 11,000 V (per the brochure) |
| Number of poles | 4 |
| Mounting | horizontal, foot-mounted |
| Insulation | class H |
| Protection | flameproof enclosure |
| Cooling | forced ventilation (when running from a VFD) |
| Integrated motor-inverter | 3300 V, 1200 kW on the shaft, 12-pulse input, mine water cooling, up to 2.5×Tn at zero speed |
| Standards | IEC |
| Certificates | ATEX / IECEx / TSA / MSHA / CSA / MA / TR CU |
Request a price and lead time
Flameproof belt conveyor motors 0.69–11 kV, 315–2000 kW (including variable-frequency and with integrated 3.3 kV drive). We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Questions and answers
What are the power and voltage of the standard range?
The standard range covers 315–1000 kW at 690–6000 V, and the motors have four poles. According to the manufacturer's brochure, power reaches 2000 kW and voltage 11,000 V.
What is known about the motor with an integrated inverter?
The integrated motor-inverter is rated 3300 V, with 1200 kW on the shaft and a 12-pulse input. Cooling is by mine water, and torque can reach 2.5 times rated at zero speed.
How does the motor operate from a frequency converter at low speeds?
The motor can run from a VFD down to low speeds, even at constant load torque. To maintain cooling, independent ventilation units are installed.
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