Assess Crossarm Safety on 11kV Systems With MCAT+

In the field of high-voltage overhead line maintenance, safety and precision are critical. Engineers working on 11kV unearthed wooden pole systems must identify potential faults before re-energising the line. The MCAT+ Micro Cross Arm Tester is a compact, intelligent device designed to support this task, offering a practical and effective solution to a long-standing safety challenge.

What is the MCAT+?
The MCAT+ is a purpose-built portable tester that measures unsafe voltage levels and leakage currents on cross arms and bonded steelwork in 11kV overhead line systems. It enables engineers to detect faulty insulators and assess prospective short-circuit current (ISC), playing a key role in preventing hazardous energisation.

Designed for all-weather use, the MCAT+ combines robust construction with advanced diagnostic capabilities, making it a dependable tool for field engineers.

Key Functions of the MCAT+

Cross Arm Voltage Measurement
An integrated high-voltage probe and voltage divider allow safe measurement of any voltage present on metal cross arms or bonded components.

Leakage Current Detection (ISC Calculation)
The MCAT+ calculates the prospective ISC in a pole. If the value exceeds pre-set safety limits, the device issues a clear warning through LED indicators, audible alerts, and screen messages.

Phase Contribution Testing
When a voltage or leakage is identified, the included WPC1000TX Transmitter can determine which phase conductor is causing the issue. Engineers can quickly test all three phases to isolate the fault.

Visual and Audible Warnings
With colour-coded LEDs (green, amber, red) and a loud buzzer, the MCAT+ provides immediate, easy-to-interpret feedback on safe or unsafe conditions.

Why It’s Important for 11kV Engineers
Working on unearthed pole systems presents unique electrical risks. The MCAT+ helps mitigate these by:

• Detecting faulty insulators before energisation

• Calculating ISC values to assess potential hazard at the pole base

• Reducing the risk of energising faulty equipment

• Delivering real-time results for in-field decision-making

• Supporting adherence to safety protocols and procedures

All tests are carried out with the cross arm earthed, ensuring the highest safety standards are met. The sequence—voltage check, ISC calculation, and phase comparison—is logical and repeatable, helping linemen maintain consistent, safe workflows.

Built for the Field
From design to functionality, the MCAT+ is tailored for use in real-world conditions:

• Weather-resistant for operation in rain, cold, and humidity

• Ergonomic high-voltage probe with pole adaptors and clear limit markings

• Battery operated for ease of transport and maintenance

• Automatic self-testing before use to ensure full functionality

Helping Keep 11kV Networks Safe
Whether working on ageing assets or critical infrastructure, the MCAT+ provides engineers with greater confidence in network integrity before re-energisation. It blends modern test capability with the durability required on site, making it a trusted tool for utilities, contractors, and maintenance teams.

Interested in a demonstration or more information?
Visit https://www.trtest.com/product/mcat-micro-cross-arm-tester or contact our team for product support and training.

In the UK, the MCAT+ is available through our partners: Acutest, Alpha Electronics, Cuthbertson Laird, Norwich Instrument Services, and PASS Ltd. For international orders, please contact us via our global distribution network.

For more information on Assess Crossarm Safety on 11kV Systems With MCAT+ talk to T&R Test Equipment Ltd