Precise electronic measurement equipment for power substations.  Designed and built first GPS clock

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Delta Star specializes in engineering and manufacturing of high quality transformers up to 315 kV, 300MVA in both single and three phase configurations up to 1175 BIL. Utility applications include power, distribution, generator step up, unit auxiliaries (UAT), grounding units, voltage regulators and auto transformers.

Delta Star’s mobile substations serve as turnkey solutions designed and manufactured to comply with customer specifications and DOT requirements. Our mobile transformers and mobile substations can be used for a number of different purposes, including:

Emergency Service

Routine Maintenance

Temporary Power Supply and Substation Capacity Increases

Power for Seasonal Load

Line switching and automation equipment from 15 to 69 kV.

Distribution regulator bypass switches.


ReliaPower LLC

24 VDC battery monitoring equipment


Trojan Dry Out Systems is an international company designing and manufacturing portable machines to process oil without deenergizing the transformer.  Automation and remote monitoring allows year-around processing for hard to get around to transformers.

Make informed and intelligent life-cycle decisions for power transformers and other substation assets.  By providing engineered solutions, diagnostic testing and monitoring systems based on expert knowledge of equipment design, construction and operation.