Megger LTW315 Non-Tripping Loop Impedance Tester

Megger LTW315 Non-Tripping Loop Impedance Tester — Fast Earth-Loop Measurement

The Megger LTW315 is a compact two-wire non-tripping loop impedance tester built for electricians and test engineers who need quick, accurate earth-loop and prospective-fault-current results on RCD-protected installations. Its low-current no-trip test measures loop impedance without nuisance tripping, while a high-current mode delivers precise low-impedance readings — all in a rugged, weatherproof CAT IV handheld to EN 61557.

Key Features

• Non-tripping loop testing — a nominal 15 mA test current measures loop impedance on RCD-protected circuits without tripping.
• High-current test — a nominal 4 A test delivers accurate low-impedance loop results where tripping is not a concern.
• Wide measurement range — displays loop impedance from 0.01 Ω to 2000 Ω at 0.01 Ω resolution.
• High accuracy — ±5% ±0.03 Ω at 230 V for confident low-Z measurement.
• Prospective fault current — calculates PFC up to 20 kA for protective-device verification.
• Voltage measurement — measures supply voltage over 100–280 V (±2% ±1 V).
• CAT IV 300 V safety — rated to CAT IV 300 V in an IP54 weatherproof case for site use.
• Portable & rugged — runs on 8 × AA cells; 203 × 148 × 78 mm, ~1000 g; −10 °C to +50 °C.

Applications

The LTW315 is ideal for periodic inspection and testing, new installation commissioning and fault-finding — verifying earth-fault loop impedance and prospective fault current on domestic, commercial and industrial circuits, including RCD-protected supplies where non-tripping measurement is essential.

What’s in the Box

• Megger LTW315 non-tripping loop impedance tester
• Test lead set
• 8 × AA batteries (fitted)
• Calibration certificate and user guide

Why Buy from MME in UAE

MOHAMMAD MAHDI Electronics Trading LLC (MME) is your trusted supplier of genuine Megger test and measurement equipment in the UAE. We offer competitive pricing, fast local delivery across Dubai, Abu Dhabi and the wider UAE, and knowledgeable after-sales support. Contact us on WhatsApp for the latest price and availability.

Download the Megger LTW315 datasheet (PDF).