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Updated December 15, 2009, 10:01 pm

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Maintenance and Repair

Equipment Maintenance

man in hardhat testing equipment

By offering a variety of electrical services, Consumers Energy’s exceptional customer service extends beyond construction. We also diagnose and address problems with your electrical equipment, such as substation and distribution transformers, regulators, breakers, switches and more.

Our team can inspect, maintain, test and repair your electrical equipment to improve its reliability and correct problems before your equipment fails. First, we will assess your electrical equipment’s condition and identify problems. Then, we will provide documentation of test results along with recommended repairs and maintenance.

However, if your equipment has failed, we will analyze the equipment failure and evaluate your replacement needs. We also offer equipment rental, including temporary emergency transformers.

For fast, reliable assistance with your electric equipment maintenance, please contact us toll-free at (800) 805-0490 or at

These products and services are not regulated by the Michigan Public Service Commission.


Preventive Maintenance

electrical equipment

Since primary and secondary equipment have few moving parts, it’s easy to overlook performing any testing or maintenance of electric equipment.  Taking a proactive approach will greatly reduce costly electrical outages, equipment damage or unexpected shutdowns.
Beginning at your substation, main switch or transformer, our dedicated professionals will provide a thorough evaluation of your electric equipment with the latest technology to maintain system reliability.  To get started, a low cost transformer fluid analysis and thermograph inspection of your electric distribution is recommended. 
During the fluid sampling, a thorough inspection of the transformer is performed to assess the overall condition of the unit.  This typically can be performed without a shutdown.  A transformer oil analysis allows us to analyze and trend the health of your transformer to ensure minimum fluid properties are maintained.  We also check the gas content for signs of overload, overheating or electrical disturbances that may lead to failure if not corrected.   If diagnosed early, many of these issues can be resolved with a scheduled shutdown and repair. 

Other transformers use air to remove the heat generated in the windings.  Because these "dry type" units use vents open to the local environment, periodic cleaning and electric testing are recommended to extend the service life of this equipment. 

The thermograph inspection allows us to detect overloaded circuits, faulty or high resistance connections, damaged fuses and clips, and other defective electrical components, before they can cause expensive facility damage or production loss.  With our nonintrusive inspection, we can evaluate primary switchgear, overhead cables, connection points and secondary protection devices to provide you early warning and documentation of incipient failures. 

With preventive maintenance services, we can establish a baseline of equipment status, allow for planned outages, improve reliability and extend the life cycle of equipment.  It’s our goal to help you avoid unexpected repairs and production losses.  

 We inspect, maintain and test the following equipment:

  • Transformers (fluid filled and dry type)
  • Voltage regulators
  • Primary switchgear
  • Main distribution panels
  • Circuit breakers
  • Cables
  • Relays
  • Uninterruptible power supplies (UPS)

For fast, reliable assistance with your preventive maintenance needs, please contact us toll-free at (800) 805-0490 or at

These products and services are not regulated by the Michigan Public Service Commission.


Electric Equipment Repair

man repairing equipment

By allowing Consumers Energy to evaluate your distribution or substation class equipment, you can help prevent breakdowns and improve reliability.

We can provide you with testing, inspection, repairing and reconditioning of most major electrical utility equipment.

We also offer equipment sales and rental, mobile substation rental and installation, oil processing (non-PCB) and Schnabel railcar leasing.

Our Capabilities Include:

  • Transformer repair, reconditioning and replacement
  • Primary switch repair and replacement
  • Oil circuit recloser reconditioning and replacement
  • Regulator repair and replacement
  • Circuit breaker reconditioning and replacement
  • Meter equipment testing (Meters, CTs, PTs)
  • Ratio, insulation and winding resistance testing
  • Prep and painting of reconditioned equipment
  • Leak repair of bushings, valves, gaguges and fittings
  • Cleaning of cables, bushings and contact surfaces
  • Ground testing
  • GFPE testing
  • Primary cable testing – PD, Tan Delta, Megger
  • Primary cable fault thumping
  • Underground cable locating
  • Insulating fluid replacement, filtration and degassing
  • Repair and replacement of OH and UG components
  • Emergency mobile substations and portable oil coolers
  • Equipment rental / lease
  • Pickup and delivery service available


Contact our company representative toll-free at (800) 805-0490, e-mail us at, or complete the form to request more information.

This product/service is not regulated by the Michigan Public Service Commission.