UPTF equipment


uptfRated power: 200 – 2000 kWt

 

Stator voltage: 6000 or 10 000 V

 

Rotor voltage: 500 – 2000 V

 

Rotor current: 200 – 1200 A

 

UPTF equipment is intended for contact-free smooth starting of asynchronous motors with a phase-wound rotor. The basic application of UPTF is the starting of high-voltage asynchronous motors with a power of 100-1600 kW for:

  • transportation belt conveyers in mining plants of different profiles
  • fuel transportation belt conveyers in heating power stations
  • where the transportation of granular products over remote distances is required
  • slow start of different lifting devices
  • slow start of mills and crushers
  • slow start of pumps with asynchronous motors with a phase rotor

 

Main advantages:

  • safe working of the conveyer belt upon conveyer start without pro-slipping and pushing by changing the momentum of the motor with a certain task from zero to the starting momentum and maintaining a certain dynamic momentum during the starting process
  • work at a lowered speed, needed for the first-time loading of the conveyer and for control procedures during use
  • work with one or several motors of any producer
  • high reliability in all climatic situations
  • safe starting of the conveyer after an emergency stop, avoiding rollback of the conveyer belt in the case of an inclined conveyer
  • lower influence on network harmonics in comparison with other methods of motor speed regulation.

Characteristics:

Parameters

Types

UPTF-200

UPTF-630

UPTF-1600

Motor rated power, kW

200

630

1600

Rotor maximum voltage, V

700

700

1600

Rotor maximum current, А

300

600

800

Starting time untill rated speed, seconds

10-60

10-60

10-60

Lower-speed operation, 10-35% of that rated, with motor power % of that rated

30

25

15

Ambient temperature admissible range, С

– 40 to + 35

Cooling

Air, natural

Overall dimensions, mm

Length

Depth

Height

600

800

2200

1400

800

2200

2200…6000*

800

2200

Weight, kg

400

750

2100…2750*

* – Motor power range 1000…1600 kW