The DC Scout: DC Ground Fault Locator

The D.C. Scout Leads the WayDC Scout Battery ground fault locator

DC Ground Fault Locator

P/N: HJA-2525

When you’re under tight time constraints, quickly locate faults with the DC Scout—with as little as 2 mA of current—in nuclear plants, power generation plants, oil refineries, chemical plants, ships, and fire alarm systems.

—The D.C. Scout is used for locating resistive or non-resistive current paths from DC Battery Distribution System to building ground without de-energizing components or loads in the system.

DC Scout Brochure (PDF)

D.C. Scout Operations Manual (PDF)

DC Scout Tutorial (PowerPoint)





The D.C. Scout has no disconnecting leads to isolate grounds in complex circuits and the device enables you to accomplish the following:

  • DC Scout battery ground fault locator-Locate ground faults without de-energizing circuits
  • -Follow pulses to ground with clamp-on detector probe
  • -Troubleshoot critical control systems quickly and accurately

Works on the following battery voltages: 24 VDC, 48 VDC, 125 VDC, 250 VDC


The DC Scout is manufactured in Tualatin, Oregon by HJ Arnett Industries, a company serving the utility industry for over 45 years.

Optional Accessories:

  • Skinny pulse detection current transformer (CT) probe
  • Part#: HJA-2525-117
  • Description: optional 0.5″ x 0.4″ opening, skinny CT
  • 220 VAC Configuration:
  • Part#: HJA-2525-220

Ground Faults:

A ground fault is an unintentional electrical path between a power source and a grounded service, and can occur at any time. They often occur when equipment is damaged or defective. Ground faults often go unnoticed and can cause problems with plant production processes. Ground faults cause serious damage to equipment and to production processes, and also create health and safety risks to personnel.

Causes of DC Ground Faults in Batteries:

  • Dirt on the surface of the container.
  • Hole in the container.
  • Jar to cover seal failure.
  • Post seal leak.

Our DC Scout Customers Include:

  • American Electric Power (AEP)
  • Alabama Power
  • Mississippi Power / Southernco
  • Dearborn Industrial Generation
  • Delmarva Power
  • Detroit Energy (DTE Energy)
  • Gulf Power
  • Jackson Energy Authority
  • PSEG – New Jersey
  • Public Service Colorado
  • Santee Cooper
  • Tennessee Valley Authority
  • More references available upon request. Please email for more references.

Pricing & Availability


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