T&R MCAT+ Micro Cross Arm Tester
- Advanced high voltage tester for overhead line safety
- Perfect for distribution network engineers
- A Micro Cross Arm Tester is vital for safety before re-energising lines and for the overall asset management of the distribution network
The T&R MCAT+ Micro Cross Arm Tester is a small, battery-powered tool. It is made to keep high voltage overhead lines safe. Specifically built for unearthed wooden poles operating at 11kV, the T&R MCAT+ is essential for engineers working on single-phase or three-phase systems across utility and transmission networks.
The T&R MCAT+ helps network operations teams identify faulty insulators and unsafe cross arms before re-energisation. It provides fast, accurate measurements of voltage and calculates the prospective short circuit current (ISC), alerting users to any dangerous conditions. Used throughout the transmission network, the T&R MCAT+ improves maintenance outcomes and reduces risk.
Built for High Voltage Overhead Line Testing
Working with high voltage overhead transmission lines presents serious challenges. From weather-related wear to ageing infrastructure, engineers need a reliable solution for fault detection. The T&R MCAT+ is your trusted high voltage tester that ensures quick and effective overhead line testing.
This high voltage testing equipment not only measures voltage present on bonded steel or cross arms, but it also determines the ISC value. If unsafe conditions are detected, the T&R MCAT+ activates its LED indicators and loud buzzer to alert the operator. Testing is automatically disabled if voltage exceeds 2.7kV, protecting both the user and equipment.
Key Features of the T&R MCAT+
- Precision voltage and ISC measurement for overhead lines (LED pass/fail indication)
- Works on wooden poles up to 11kV
- Backlit display with wide viewing angle
- Designed for high voltage overhead power lines in 50Hz networks
- Visual LED indicators and audible alarms (green, amber, red)
- High-contrast graphic LCD for outdoor readability
- Self-test and probe validation before each use
- WPC1000TX Wireless Phase Comparator for phase identification (included)
- Fully compliant with IEC 61481-1 and BS EN 61243-2
- Robust, weather-resistant construction
- Battery-powered and easy to transport
- Supplied with HV probe, leads, and earthing stick
What Does the T&R MCAT+ Test?
Cross Arm Voltage: The T&R MCAT+ measures voltage on bonded metal components to detect insulation breakdown or unintended energisation.
Leakage Current (ISC): It calculates the ISC value, categorising it as:
- Safe: <0.3 mA (Green)
- Caution: 0.3–5 mA (Amber)
- Unsafe: >5 mA (Red)
Phase Contribution: With the WPC1000TX transmitter, the T&R MCAT+ identifies which phase is contributing to the fault, streamlining repairs on high voltage overhead transmission lines.
Why the T&R MCAT+ Matters for Network Operations
Effective network operations depend on safe infrastructure. The T&R MCAT+ supports utility teams by:
- Detecting faults before energisation
- Ensuring compliance with safety regulations
- Preventing accidental re-energisation
- Saving time through quick diagnostics
With an intuitive interface, rugged casing, and battery-powered convenience, the T&R MCAT+ is engineered for daily use in the field.
The MCAT+ is perfect for:
- Overhead Line Engineers/Technicians
- Field Engineers/Technicians
- Maintenance Engineers/Technicians
- High Voltage Testing Engineers/Technicians
- Protection Engineers/Technicians
Built to Last in the Field
Engineered for tough conditions, the T&R MCAT+ works in rain, heat, and snow. Key field-ready features include:
- Operating temperature: -25°C to +55°C
- Shock-resistant: ABS enclosure
- LCD screen: Large, backlit 240x64
- Intuitive: Simple encoder and push-button control
- Ready to go: Quick self-check and probe validation
Technical Specifications
| Feature | Details |
| Voltage Range | Up to 11kV (±1% accuracy); >11kV (±5%) |
| ISC Indicators | Green (<0.3mA), Amber (0.3–5mA), Red (>5mA) |
| Max Voltage | 2.7kV (auto-inhibit above this) |
| Operating Temp | -25°C to +55°C |
| Display | 240x64 Graphic LCD |
| Alarm | >65 dB buzzer at 5m |
| Batteries | 6x 1.5V C-cell (main), 1x 9V PP3 (transmitter) |
| Dimensions | Base: 336x300x148mm; Probe: 850x45mm |
| Weights | Base: 3.2kg; Probe: 1.5kg; Transmitter: 1kg |
| Frequency | 433.9 MHz |
Safer Transmission Networks Start with T&R MCAT+
The T&R MCAT+ is already a trusted solution in transmission network maintenance. Its fast setup, clear test results, and high reliability make it indispensable for utility companies and contractors who prioritise safety in high voltage environments.
Whether you‘re maintaining ageing lines or inspecting new installations, the T&R MCAT+ delivers confidence when it matters most.
What Comes with the T&R MCAT+
- T&R Test Equipment MCAT+ Micro Cross Arm Tester
- 1 x 10m Probe Connection Lead (A257-0001)
- 1 x 3m Earth Lead terminating with a test clip (A257-0002)
- Accessories:
- G257-0009 Earth Stake
- DDM5008 60mm Hook (Probe)
- CMH0297 40mm Hook (WPC1000)
- DFH5039 250mm Electrode Extension (WPC1000)
- DDC5025 Bowthorpe Rod Adaptor (WPC1000)
- DDC5054 Universal Star Wheel Adaptor (WPC1000)
- DDM5003 Polymer Cleaning Kit
Optional Accessories:
- 5m probe lead extension (A257-0003)
- Bowthorpe rod and star wheel adaptors
MCAT+ Options:
- (257) Complete MCAT+ system
- (257-P) MCAT+ Probe
- (257-U) MCAT+ Base Unit
- (WPC1000TX) Wireless Phase Comparator Transmitter
Get ahead of faults before they cause failures. Invest in the T&R MCAT+ and bring industry-leading overhead line testing to your network operations. Contact us for demos, pricing, or to place your order.
❓ Frequently Asked Questions (FAQ)
Q1: Is the T&R MCAT+ suitable for bad weather?
A: Yes. It is designed to work in extreme temperatures and wet conditions.
Q2: What happens if voltage exceeds 2.7kV?
A: The unit automatically stops ISC testing to ensure safety.
Q3: Can I identify which phase is faulty?
A: Yes. The WPC1000TX wireless transmitter enables phase identification.
Q4: Is the T&R MCAT+ approved for live network use?
A: Yes. It complies with IEC 61481-1 and BS EN 61243-2.
Q5: What kind of operations use the T&R MCAT+?
A: It is widely used in network operations, utilities, and contractors maintaining high voltage overhead lines.
