Tallinna Elektrotehnika Tehas Estel AS
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- Estel - Model UPTF - Electric Stations ...
Estel - Model UPTF -Electric Stations Equipment
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.
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- Rated power: 200 – 2000 kWt
- Stator voltage: 6000 or 10 000 V
- Rotor voltage: 500 – 2000 V
- Rotor current: 200 – 1200 A
- Designed to comply with RoHS and REACH requirements
- 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
