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Substation and Switchgear Electrical Testing

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Substation and Switchgear Electrical Testing

Substation and Switchgear Electrical Testing

Acceptance Testing

Acceptance Testing ensures the proper operation of newly installed electrical apparatus prior to its being energized. Acceptance testing also provides baseline measurements for future comparison.

Maintenance Testing

Maintenance Testing determines whether existing electrical apparatus is able to provide continued suitable operation. A safe and reliable system is ensured with regularly maintained equipment. Potential problems can be identified before requiring expensive solutions and causing downtime or injury.


Upgrades are available to provide automatic transfer to generator, or secondary feed on double ended substations or switchgear.  This can also include upgrades of relay systems, breakers, transformers, grounding systems, and other apparatus.

As a full member of the InterNational Electrical Testing Association (NETA), UIS can provide a wide array of services for our customers. Our testing methods are performed according to NETA and American National Standards Institute (ANSI). All testing equipment that is calibrated and traceable to National Institute of Standards and Technology (NIST).

Testing & upgrades of:

  • Protective Relays – E/M, Solid State/Microprocessor Based
  • Transformers – Dry, Oil, & LTC
  • Breakers – SF6, Vacuum, Oil, & Air
  • Instrument Transformers – Current & Voltage
  • Meters – WHM, AMP, & VOLT
  • Generator Controls – ATS & MTS
  • UPS/Battery Systems
  • Cable Testing – Hi Pot, VLF, & Tan Delta & Cable Fault Locating
  • Ground Rod, Mat, & Touch Potential
  • Capacitor Banks & Reactors
  • Low Voltage Breakers – Air Power, Insulated Case & MCCB
  • Motor Control Centers, VFDs & Motor Starters

Tests include:

  • Oil sampling
  • Transformer turns ratio
  • Power factor
  • Insulation resistance
  • Conductance
  • Timing
  • Protective relay calibration
  • High potential (HIPOT)
  • Infrared scanning
  • And more…