Electrical Service


Energized Preventative Maintenance

  • Infrared Thermography per NFPA 70B
  • Arc Flash Analysis per NFPA 70E
  • Voltage and Current Readings
  • Power Quality Analysis
  • Power Factor Correction
  • Code Compliance Verification
  • Infrared Window Installation
  • Transformer Insulating Fluid Remote Sampling Port Installation
  • Transformer Insulating Fluid Processing

Acceptance & Maintenance Testing

  • Transformers
    • Insulation Resistance
    • Turns Ratio
    • Winding Resistance
    • Power Factor
    • Dielectric Frequency Response
    • Sweep Frequency Response
    • Partial Discharge
    • Exciting Current
    • Bushing power factor
    • Bushing hot collar
    • Insulating fluid analysis
  • Switchboards/Switchgear
    • Bus Insulation Resistance
    • Bus Contact Resistance
    • Ground fault performance
    • Arc Energy Reduction performance
    • Dielectric withstand
  • Circuit Breakers
    • Insulation Resistance
    • Contact resistance
    • Primary Injection
    • Secondary Injection
    • Shunt trip verification
    • Dielectric Withstand
    • Vacuum bottle integrity
  • Busway
    • Insulation Resistance
    • Contact Resistance
    • Dielectric Withstand
  • Medium and Low Voltage Cables
    • Insulation Resistance
    • High Potential Very Low Frequency (VLF)
    • Tan Delta
    • Partial Discharge
    • Circuit tracing
    • Fault finding
  • Medium and Low Voltage Switches / Disconnects
    • Insulation Resistance
    • Contact Resistance
    • Fuse Resistance
    • Dielectric withstand
    • Lubrication
  • Instrument Transformers – Voltage Transformers (VTs) and Current Transformers (CTs)
    • Ratio
    • Secondary Winding Resistance
    • Secondary Short Circuit Impedance
    • Saturation
    • Polarity
    • Burden
    • Insulation Resistance
    • Dielectric Withstand
  • Protective Relays – Microprocessor and Electromechanical
    • Protection files with settings
    • Testing of enabled functions
    • Mechanical adjustments
    • Instrument transformer verification
    • Remote access
    • Witness testing for generation applications
  • Reclosers
    • Insulation Resistance
    • Contact Resistance
    • Dielectric Withstand
    • Vacuum bottle integrity
    • Voltage sensor verification
    • Controller operation
    • Integration with protective relays
  • Surge Arresters
    • Insulation Resistance
  • Grounding
    • 3 Point Fall of Potential
    • 4 Point Soil Resistivity
    • Point to point checks
  • Capacitors
    • Insulation Resistance
    • Capacitance readings
    • Online voltage and current
    • Discharge resistor verification
  • Reactors
    • Insulation Resistance
    • Inductance readings
    • Winding resistance
    • Online voltage and current
  • Batteries
    • Specific gravity
    • Cell Resistance
    • Cell Voltage
    • Ohmic Measurements
    • Charger verification
    • Load test
  • Fiber Optic Cable
    • dB Loss / Length
    • Optical time domain reflectometer (OTDR)

24/7 Service Support

Elm offers round-the-clock electrician and engineering support with prompt, on-call pager response. Our technicians are dispatched via cell phone, ensuring rapid arrival at your facility. Upon arrival, they are already familiar with your manufacturing processes and machinery, enabling them to efficiently maintain and repair your equipment with minimal downtime.

For more information or to schedule service, contact us today at 413.568.0905 or elm@elmelec.com. We’re here to keep your operations running smoothly, 24/7.

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