CAW is your trusted source for electric motor repairs and rewinding in South Africa.


Our dedicated field service teams are at your site whenever you need us, working for you around the clock. Dedicated to ensuring fast turnaround and high quality field service.

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We guarantee fast turnaround with our complete solution, including in-house engineering, manufacturing and test capabilities.

CAW is the premier provider and facility of choice, for electric motor repair and service in South Africa. 

As the largest motor repair facility in the Western Cape, our facility meets nationally recognized quality and industry standards. Using quality materials and advanced testing, we provide service 24 hours a day, seven days a week. With a total floor space of 3,000m2, our super facility can meet the requirements of the largest petrochemical plants to the smallest manufacturing plant. CAW integrates all of our operational divisions – pumps, electrical, engineering and rail – to offer the complete solution.



  • Rewinds
  • Reconditions
  • On or Off-Site Repairs
  • On-site preventive and predictive services
  • Troubleshooting
  • Dynamic Balancing
  • Root Cause Analysis
  • VPI System
  • Pick-up and Delivery of Serviced Parts
  • Comprehensive Testing – Documentation – Reporting
  • Load Testing
  • Core Loss Testing
  • Winding Analysis Surge Testing
  • Vibration Analysis
  • Thermography
  • PI Testing
  • Locked Rotor Testing
  • Manufacture of field, inter-pole and damper windings for DC field frames
  • Manufacture of winding kits
  • Manufacture of cable kits

  • AC LV Motors up to 800kw
  • MV Motors (3,3KV-6,6KV) 185kw to 5000kw
  • DC Motors up to 3000kw
  • Submersible Pumps up to 450kw
  • Alternators up to 7000kva
  • Vibrator Motors
  • LV Brakes & Transformers
  • Field & Interpole Coils
  • Traction Motors

CAW’s field service teams are available 24/7/365 –  working for you around the clock. We are committed to ensuring quick turnarounds and the highest quality field service capabilities. CAW has delivered field services to our customers for over 40 years.  Our repair service has proven that large electrical rotating machines can be repaired at sea. CAW helps you maximize profitable operation time by eliminating the need to take motors, generators, alternators and pumps out of commission.

Please contact us to find out about our Service Level Agreement (SLA).


24/7 Emergency Support

Customers can count on around-the-clock support from our expert field service crews. In case of an emergency breakdown, CAW staff can be at your site as soon as possible with our fully-equipped mobile workshops to provide emergency repair services for electric AC and DC motors, generators, alternators and pumps.

Our emergency field services include:

  • On-site assistance providing technical teams and equipment as soon as possible
  • On-site repairs
  • On-site troubleshooting
  • On-site motor circuit analysis (MCA)
  • On-site predictive maintenance

Mobile Field Service Workshop

You need fast and reliable services on-site to reduce downtime and minimize cost. We provide fast and flexible on-site services  with our mobile workshop, fully-stocked with the latest technology. Crews come to your site ready and equipped to work for you.

The mobile field service workshop is used predominantly for projects in the marine, mining and oil and gas industries. The workshop provides a secure and organized work space to ensure that repair projects are completed efficiently and on time.


CAW offers comprehensive testing and analysis of motor performance to ensure that equipment is put back into operation in perfect condition. Our facility is fully-equipped with state-of-the-art test equipment for both AC and DC motors, generators, alternators, and pumps, ensuring that equipment is being repaired using the best available techniques and services for our customers.

Here is a brief description of some of our onsite and offsite test equipment and capabilities:

Vibrator Testing



CAW’s Vibrator Motor Test Facility is a new addition and advancement to the super facility. It was designed initially to test 11KW/GP vibrator motors. Already valued at R1.4 million, the facility will be further developed in early 2016 to incorporate other KW and speed vibrator motors. After each repair, vibrator motors are put to the test in this facility and customers are given computer printout test reports.

CAW customers will now have peace of mind that repaired vibrator motors will operate and function according to OEM specifications. Besides the cost benefits, most importantly, downtime will be minimised.



Load Testing

CAW super facility features the only Load Testing facility of it’s kind in the Western Cape, that can easily test AC/DC, and traction motors providing guaranteed motor efficiency. The state-of-the-art water-cooled Eddy Dynamometer can simulate actual motor load conditions while, at the same time, measure horsepower and torque output – thereby simulating marine applications. The data then becomes a validated written performance test through the use of a digital readout and test report printer. Ensuring this service will be performed to the highest quality, lower cost, and within quicker turnaround times, local clients now no longer have to send their motors to Johannesburg for load testing on this scale.

All load testing in conducted by highly skilled engineers and experienced load testing staff experts on site.
Load Test Specifications: 1600 amp | 220 – 720 volts | 50 & 60 Hertz | 3300 – 6600 volts | temperature monitoring | Lock rotor for 25, 50, 75 percent and full load tests up to 450 kw in both directions.


Submersible Pump Testing

Setting a new standard for repairs to submersibles, CAW can offer customers the precise performance of their pump and motor set, through this state-of-the-art facility – the only pump testing facility of its kind in the Western Cape. CAW has extensive experience in the successful repair of numerous different makes of submersible pump sets including for the City of Cape Town’s submersible sewage pumps and large Pleuger platform pumps for the off-shore industry. For more information on pumps, please visit CAW Pumps.


Computerized Core Loss Testing

CAW uses a fully automated computerized core tester to determine core losses found in stators, rotors, and armatures. Core loss is the major cause of wasted electrical energy which can result from overheating during operation, motor pre-mature failure, and physical damage such as rotor drag. Without core loss testing, it is impossible to determine that a motor is capable of operating at rated efficiency. Motors are tested and a printout of results is provided to customers.

Winding Analysis Surge Test

Surge testing is a part of a comprehensive maintenance program. Without maintenance and repair all motors will eventually fail either electrically or mechanically. Surge testing will predict motor burn-out due to turn-to-turn or phase-to-phase shorting. A winding analysis surge test by CAW will detect turn to turn insulation failures far in advance of an electrical breakdown – giving you the power to confirm faults and take preventative action.

Motor Circuit Evaluation (MCE)

Motor Circuit Evaluation is an off-line test for motors that yields inductive balance, resistive balance, resistance and capacitance to ground as an indicator of motor stator winding health. The test is also useful in diagnosis of faulty or broken rotor bars, eccentricity, insulation system health and defective or deteriorating motor connections.

Vibration Analysis

Vibration Analysis is a predictive maintenance method which allows early problem detection in rotating machinery. Vibration Analysis will identify component faults – such as defective bearings & misalignment – and enable you to take maintenance action before a failure in service brings your plant to a halt.


CAW uses infrared thermography as a powerful predictive maintenance tool, to detect problems in electric motors. Our testing process uses instrumentation to read surface temperature to determine operating conditions. By detecting thermal anomalies (areas hotter or colder than they should be), our experienced technicians can locate and define a multitude of problems within the machinery.

Polarization Index Test

Polarization index testing is performed on electric motors and generators by CAW, and is regarded as a useful tool in evaluating windings for build up of dirt or moisture, deterioration of the insulation and suitability for further operation.

Locked Rotor Testing

CAW performs locked rotor test (which is equivalent of a short circuit test for a generator) to verify the maximum current handling capability of the motor, and as such is performed on the motor as part of the final acceptance test.


Discuss Electric Motor Repair with a CAW Specialist


George Epenetos
Commercial Director
+27 (0) 21 556 1488
082 882 0071

General Enquiries
Send us an email message via our contact form.

Emergency/ Electric Motor Breakdown Support

Emergency contact numbers

Emergency Breakdown: 071 680 5902
Ops Manager: 084 295 7433
Standby Driver: 082 456 1126