Your facility requires preventive electrical maintenance.

• It's a compliance issue
• It's a health and safety issue
• It's a liability issue.

You facility benefits from preventive electrical maintenance.

• "We can't afford for this equipment to go down."
• "We can't insure you if you're not NFPA compliant."
• "30% reduced maintenance costs"
• "25% increase in production."

We know what electrical maintenance you need.

We're accredited testers, certified technicians, and qualified risk assessment professionals. And we put it all together for cost-effective asset management.

Now you know who to call.

Are You Testing All of This?

• Automatic Transfer Switches
• Battery Banks
• Bus Bars
• Bus Ducts
• Circuit Breaker Panels
• Circuit Breakers
• Disconnect Switches
• Distribution Panels
• Distribution Switch Boards
• Generators
• Ground Fault Protection
• Main Fuses
• Main Panels
• Motor Control Centers
• Power Distribution Units (PDUs)
• Power Meters
• Relays
• Switchgear
• Transformers
• UPS (Uninterruptible Power Supply) Backups
• Voltage Meters

Reduce costs and risks with ABM electrical maintenance and asset management solutions.

We Test and Maintain All of This Electrical Distribution Equipment

Electrical maintenance saves costs, extends equipment life, and reduces the risk of fines, liability, and medical expenses from an incident. To ensure your business benefits, you'll need certified, qualified people checking your electrical assets. The list below is just a sampling of what our teams do.

Every asset below is required to be maintained in accordance with recognized standards. In addition to the tests below, each asset also needs a (1) visual inspection, (2) cleaning, and where appropriate, (3) tightening.

All Bus Bars and Bus Ducts

• Connection and contact resistance
• Insulation resistance
• Thermographic survey

Automatic Transfer Switches

• Contact resistance
• Insulation resistance

Battery Banks

• Connection resistance
• Impedance
• Load bank
• Voltage to ground and equalizing voltage

Circuit Breakers (Including Main Breakers)

• Connection, control wiring, and contact resistance
• Drop values, ground fault, and short-and long-time pickup values
• Insulation resistance
• Static contact/pole-resistance
• Trip unit programming and settings
• Verify operation

Disconnect Switches

• Contact resistance
• Insulation resistance
• Fuse verification

Generators

• Connection resistance
• Insulation resistance
• Load bank
• Winding resistance

Grounding Systems

• Soil resistivity
• 4-point method
• 3-point (fall of potential)
• 2-point (dead earth)

Motor Control Centers

• Connection resistance
• Insulation resistance
• Test control devices and motor protection parameters

Power Cables

• Point to point verification
• Insulation resistance
• Phase identification
• Additional tests for Medium Voltage:
  • High potential (DC and VLF)
  • Partial discharge
  • Tan delta/dissipation factor

Power Meters

• Current ratio
• CT performance

Protective Relays

• Circuit, coil, and contact resistance
• Overcurrent and overvoltage pickup
• Pickup times and time delays
• Trip resistance

Switchgear, Main Panels, Distribution Panels, and Switch Boards

• Connection resistance
• Control wiring insulation resistance
• Insulation integrity
• Ground resistance and fault relays
• Test all meters, instrument transformers, and control power transformers

Transformers

• Insulation integrity (Megger test)
• Oil analysis (unless dry-type)
• Power factor (Doble test)
• Relay testing (i) Temperature, (ii) Pressure
• Turns ratio
• Winding resistance

Voltage Meters

• Insulation integrity
• Turns ratio

There's So Much More

For instance, the 2019 NETA guidelines for inspecting switchgear lists 19 points.

For a More Complete Look, Please refer to the 2019 Standard for Maintenance Testing Specifications for Electrical Power Equipment & Systems

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