Assess Crossarm Safety on 11kV Systems With MCAT+

In the world of high-voltage overhead line maintenance, safety and precision are paramount. Engineers working on 11kV unearthed wooden pole systems face the constant challenge of identifying potential faults before re-energisation. Enter the MCAT+ Micro Cross Arm Tester – a portable, intelligent instrument that offers a powerful solution to a persistent problem.

What Is the MCAT+?

The MCAT+ is a purpose-built device designed to test for unsafe voltage levels and leakage currents on cross arms and bonded steelwork on 11kV overhead line systems. It helps engineers detect faulty insulators and assess prospective short-circuit current (ISC) conditions — crucial steps in preventing dangerous energisation scenarios.

Compact and weather-resistant, the MCAT+ is suitable for outdoor use in all environments, combining ease of use with advanced fault detection.

Key Functions of the MCAT+

• Crossarm Voltage Measurement
  Using an integrated high-voltage probe and voltage divider circuitry, the MCAT+ safely measures voltage present on metal cross arms and bonded steelwork.
• Leakage Current Detection (ISC Calculation)
  The device calculates the prospective short-circuit current in the pole. If ISC exceeds safe thresholds, the system warns the operator via LED indicators, buzzer, and screen messages.
• Phase Contribution Testing
  When leakage or voltage is detected, the included WPC1000TX Transmitter helps identify which phase conductor is responsible for the fault. Engineers can test all three phases in sequence to isolate the issue.
• Visual & Audible Alerts
  Smart LED colour coding (green, amber, red) and a high-decibel buzzer provide instant feedback on safe, cautionary, or dangerous conditions.

Why It Matters to 11kV Engineers

Working with unearthed wooden pole systems presents unique safety challenges. The MCAT+ supports engineers by:

• Identifying faulty insulators before energisation
• Calculating ISC to assess danger levels at the base of the pole
• Reducing the risk of re-energising unsafe infrastructure
• Providing clear, real-time results in the field
• Helping teams comply with safety standards and procedures

All tests are performed with the crossarm earthed, ensuring safe working practices. The test sequence – from voltage check to ISC to phase comparison – is intuitive and repeatable, streamlining workflows for experienced linemen.

Designed for Field Conditions

From its durable construction to its user-friendly interface, the MCAT+ is built with field use in mind:

• Outdoor-ready – can be used in rain, cold, and high humidity
• Ergonomic high-voltage probe – with limit marks and pole adaptors
• Battery powered – simple to maintain and transport
• Automatic self-tests – verify functionality before each operation

Supporting Safer Networks, One Pole at a Time

For engineers working on ageing or critical 11kV infrastructure, the MCAT+ offers peace of mind and enhanced confidence in asset condition before lines are brought back online.

By combining modern test capability with rugged reliability, the MCAT+ Micro Cross Arm Tester has quickly become a valuable tool for utilities, contractors, and maintenance crews responsible for keeping the network safe and energised.

📩 Want to learn more or arrange a demonstration?

Visit https://www.trtest.com/product/mcat-micro-cross-arm-tester or contact our team for product support and training opportunities.

Our partners, including Acutest, Alpha Electronics, Cuthbertson Laird, Norwich Instrument Services, and PASS Ltd offer the MCAT+ in the United Kingdom. If you are based outside of Great Britain, you can order the product through our worldwide distribution network.