Megger LTW315 CAT IV Two-Wire Non-Tripping Loop Tester
The Megger LTW315 is a two-wire non-tripping loop impedance tester rated CAT IV for 50 V to 440 V circuits, delivering 0.01 ohm resolution without tripping 30 mA RCD protection during live electrical safety testing.Overview
The Megger LTW315 is part of the LTW300 series of two-wire non-tripping loop impedance testers, built for electricians who need to verify earth loop impedance on live circuits without disconnecting supply. Operating across a 50 V to 440 V range, it is engineered specifically to avoid tripping standard 30 mA RCD protection during testing.
Key Features
- Two-wire testing method with automatic start for loop impedance measurement on energized circuits
- Compatible with single-phase and three-phase systems protected by RCDs
- High 0.01 ohm resolution for accurate loop impedance readings
- Built-in noise detection circuit that extends the test automatically if supply noise is present
- CAT IV rated for installation-level electrical testing
- Powered by 8 x AA cells for portable field use
Specifications
- Brand: Megger
- Measurement Range: 50 V to 440 V
- Resolution: 0.01 Ω
- Safety Rating: CAT IV
- Battery: 8 x AA Cells
- Operating Temperature: 15 °C to 55 °C
- Country of Origin: United States
- Weight: 1 kg
Why buy from Procure.ae
Procure.ae supplies electrical contractors and facilities teams across the UAE and GCC with genuine Megger test instruments, backed by bulk and institutional procurement support. Request a quote for volume pricing, calibration support, and regional delivery.
FAQ
Does the LTW315 trip RCDs during testing?
No, it uses a two-wire non-tripping method specifically designed to avoid triggering standard 30 mA RCD protection while measuring loop impedance on live circuits.
What voltage range does it support?
It operates across a wide 50 V to 440 V range, covering both single-phase and three-phase installations.
Is it suitable for CAT IV environments?
Yes, the LTW315 is rated CAT IV, making it suitable for testing at the origin of an electrical installation.
Description
Overview
The Megger LTW315 is part of the LTW300 series of two-wire non-tripping loop impedance testers, built for electricians who need to verify earth loop impedance on live circuits without disconnecting supply. Operating across a 50 V to 440 V range, it is engineered specifically to avoid tripping standard 30 mA RCD protection during testing.
Key Features
- Two-wire testing method with automatic start for loop impedance measurement on energized circuits
- Compatible with single-phase and three-phase systems protected by RCDs
- High 0.01 ohm resolution for accurate loop impedance readings
- Built-in noise detection circuit that extends the test automatically if supply noise is present
- CAT IV rated for installation-level electrical testing
- Powered by 8 x AA cells for portable field use
Specifications
- Brand: Megger
- Measurement Range: 50 V to 440 V
- Resolution: 0.01 Ω
- Safety Rating: CAT IV
- Battery: 8 x AA Cells
- Operating Temperature: 15 °C to 55 °C
- Country of Origin: United States
- Weight: 1 kg
Why buy from Procure.ae
Procure.ae supplies electrical contractors and facilities teams across the UAE and GCC with genuine Megger test instruments, backed by bulk and institutional procurement support. Request a quote for volume pricing, calibration support, and regional delivery.
FAQ
Does the LTW315 trip RCDs during testing?
No, it uses a two-wire non-tripping method specifically designed to avoid triggering standard 30 mA RCD protection while measuring loop impedance on live circuits.
What voltage range does it support?
It operates across a wide 50 V to 440 V range, covering both single-phase and three-phase installations.
Is it suitable for CAT IV environments?
Yes, the LTW315 is rated CAT IV, making it suitable for testing at the origin of an electrical installation.
Specifications
Brand
Megger
Product Type
Loop Impedance Tester
Storefront L1
industrial
Storefront L2
Advanced Test
Storefront L3
calibrators
Weight (Spec)
1
Country of Origin
United States
Operating Temperature
15°C and 55°C
Battery
8 Off AA Cells
Frequently Asked Questions
What is loop impedance testing and why is it essential?
Loop impedance testing measures the resistance in the electrical path from the circuit breaker to the fault, ensuring the breaker can quickly shut off dangerous faults without harming equipment.
What does CAT IV 50V to 440V rating mean?
CAT IV (Category IV) is the highest safety rating for electrical test equipment, allowing safe operation on high-energy circuits up to 440V (three-phase industrial power).
How does non-tripping protect RCD devices?
Standard loop testers can trigger 30mA RCD protection, cutting power during the test; the non-tripping design tests without nuisance trips, saving time and disruption.
Why is 0.01 ohm resolution important?
High resolution (precise to 0.01 ohms) ensures accurate readings on short circuits, helping electricians diagnose subtle faults that lower-resolution meters might miss.
Can the LTW315 test residential and industrial systems?
Yes, its CAT IV rating and two-wire testing capability make it suitable for everything from residential circuits to large industrial installations.
Is the LTW315 portable for fieldwork?
Yes, it is a portable handheld tester ideal for electricians moving between job sites and testing circuits in the field.
Can Procure.ae supply electrical test equipment across the GCC?
Yes, Procure.ae delivers across the region; contact our team for current availability and delivery lead times.
Does Procure.ae advise on electrical safety and testing?
Our team can advise on equipment use and safety practices; reach out to discuss your electrical testing programs.
What is the measurement range of the LTW315?
Contact Procure.ae for detailed technical specifications on impedance range and measurement accuracy.
What comes with the LTW315?
Contact Procure.ae to confirm what test leads, probes, and carrying case come with the meter.
Is the LTW315 calibrated and warranted?
Contact Procure.ae for warranty details, calibration information, and any certification options.
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