We specialise in the overhaul/repairs of MV and LV rotating electrical machines:
- AC motors (squirrel-cage and slip-ring type),
- generators and exciters,
- motors of special construction, including explosion-proof (EX) versions,
- induction generators,
- DC motors and generators.
The scope of work performed includes, but is not limited to:
- repackaging of magnetic sheets for stators and rotors,
- production of windings (coils),
- stators rewinding in insulation class “F”,
- replacement and refurbishment of rotor cages,
- manufacture and regeneration of rotor shafts,
- reconditioning and insulating bearing discs/shields,
- installation of temperature sensors in stator windings and bearing assemblies/units,
- installation of anti-condensation heaters in motor stators,
- repairs of commutators,
- reconditioning of slip ring heads and brush holders,
- balancing of rotating sets/units.
The service is intended to bring about a distinct improvement in the performance of machinery and rotating equipment or to achieve the characteristics required by a Client/Principal.
Among other things, we offer:
- refurbishments/modernisation of motor ventilation systems (noise reduction),
- reducing losses and improving the coefficient of performance/efficiency,
- modernisation/refurbishment of rotor cages,
- modernisation of bearing assemblies/units, including change of bearing arrangement,
- changes in motor parameters, including supply voltage, power, rotational speed,
- improving the main insulation and the winding insulation,
- adaptation of insulation systems for converter power supply,
- prevention of moisture in motors by making a system and installing anti-condensation heaters,
- replacement of old-generation terminal boxes with approved explosion-proof terminal boxes.
The correctness of the work performed is confirmed by the results of inter-operational and final tests carried out in accordance with the requirements of the relevant groups of standards: PN-EN 60034, PN-E-04700, PN-EN IEC 60079, ISO 10816 and internal control/inspection schedules of ZPRE “Jedlicze” Sp. z o. o.