Alternators and electric motors

OUR
TECHNICAL EXPERTISE

Our field team is made up of French specialist engineers who have worked for the biggest manufacturers of electrical & mechanical systems, for international projects.
We are used to work on equipment up to 200 MW / alternator.

PRE-COMMISSIONING
& COMMISSIONING

✓ Control of the auxiliary wiring to the drive
✓ Checking the grounding of the drive
✓ Control of drive configuration
✓ Verification of analog inputs
✓ Control of rotating field & voltage level
✓ Verification of cable sections
✓ Insulation checks
Parameter control: voltage, starting & braking ramp, protection class, voltage limitation, number of authorized starts…

MAINTENANCE
& INSPECTION

STATOR

✓ Visual & mechanical inspection
✓ Troubleshooting & repair
✓ Temporary rewinding on site
✓ Insulation measurement

ROTOR

✓ Visual & mechanical inspection
✓ Troubleshooting & repair
✓ Disassembly & reassembly
✓ Rotor extraction & replacement
✓ Pole replacement
✓ Insulation measurement
✓ Air gap measurement

CABLING

✓ Visual & mechanical inspection
✓ Torque tightening of power
& auxiliary cables control
✓ Neutral resistance measurement

EXCITER

✓ Visual & mechanical inspection
✓ Exciter connection & winding control
✓ Rotor rectifier & diode plate control
✓ Troubleshooting & repair
✓ Disassembly & reassembly
✓ Stator / rotor exciter extraction & replacement
✓ Insulation measurement
✓ Air gap measurement

VIBRATION & ALIGNMENT

✓ Perform an alignment
✓ Measurement of vibrations
✓ Analysis of spectrums
✓ Perform a balancing

BEARING

✓ Bearing opening
✓ Visual & mechanical inspection
✓ Bearing replacement
✓ Pad repair
✓ Pole replacement
✓ Insulation bearing repair
✓ Insulation measurement

HYDRO COOLER

✓ Visual & mechanical inspection
✓ Leakage detector & alarms
✓ Hydro cooler replacement

PIPING / WELDING

✓ Cooper, aluminium, stainless steel, …
✓ Arc / Tig
✓ Piping assembly & disassembly
✓ Piping repair
✓ Penetrant weld control

THRUSTER

✓ Visual & mechanical inspection
✓ Insulation measurement
✓ Bearing replacement
✓ Thruster replacement

SPECIFIC
WORKS

Rotor extraction
Complete repair in workshop
Temporary rewinding on site
Temporary coil graft on site
Shaft wear inspection
Complete alternators cleaning
to recover a low polarization index
Complete cleaning &
coil repaiting (insulation)
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OUR EQUIPMENT

Theodolite, laser for alignment, vibro-port,
digital multimeter, tester, endoscope
& complete tool boxes.