AC & DC Generator Rewind & Service

Industrial Electrical Generator Repair: AC & DC Services

View of a generator with a Pelton wheel on the end inside a dynamic balancing machine

At Beaver Electrical, we specialize in the overhaul and repair of both AC and DC generators (alternators). Our skilled technicians can provide comprehensive in-shop services or perform on-site repairs for heavy industrial equipment across British Columbia. We are also proud to serve as an authorized Cummins Inc. Service Centre.

Have a look at some of our previous work:

Stator Electrical Testing

We offer a complete suite of electrical tests to assess and repair stator health, including:

Winding Copper Resistance Measurements: To detect winding damage or shorted turns.
Insulation Resistance (Megger) Testing: For insulation quality evaluation.
Polarization Index (PI) Testing: Extended insulation resistance for in-depth analysis.
DC Leakage Test: Identifies potential insulation issues under DC conditions.
High Potential Proof Testing (DC/AC Hi-Pot): Ensures insulation can handle operating voltages.
RTD Resistance and Megger Tests: Verifies the function of embedded temperature sensors.
Core Testing and El-Cid: Non-destructive testing to identify interlaminar faults in the core.
Transposition, Tube-to-Tube, and Tube-to-Copper Resistance Tests: To ensure correct electrical and cooling system performance.

Stator Mechanical Testing

We perform rigorous mechanical inspections and tests to ensure long-term reliability:

Wedge, Core, and Bore Ring/Belly Band Tightness: Ensures structural integrity to prevent vibration and mechanical stress.
Vent Tube Testing: Confirms proper cooling.
Bump Testing and Cooling HIT Skid Testing: Mechanical stability and cooling efficiency validation.

With decades of experience and as an authorized Cummins service centre, Beaver Electrical provides dependable and precise generator repair services to the heavy industry sector. View of a generator with a Pelton wheel on the end inside a dynamic balancing machine

Field Electrical Inspection

Our field inspection services are designed to maintain rotor performance:

DC Winding Resistance and AC Impedance Tests: Detects damage or inconsistencies in the rotor windings.
Insulation Resistance and Polarization Index Tests: Ensures insulation quality.
Pole Balance and Repetitive Surge Oscillograph (RSO) Testing: Detects imbalance or insulation failure in rotor windings.

Field Mechanical Testing

Visual Inspection: We perform thorough mechanical checks to detect wear or stress on rotor components.