Megger LTW300 2 Wire Loop Impedance Testers

• Measurements: Loop impedance (20 Ω: 0.01 Ω res, 200 Ω: 0.1 Ω res), supply frequency (16 Hz, 50/60 Hz, 400 Hz), supply voltage (50-550 V, 400 V at 16 Hz). 

• Functionality: 2 wire non-trip loop testing (no 30 mA RCD trip), high current loop testing, maxZ calculation, R1+R2 (LTW325+), data download (LTW335+), 0.001 Ω res (LTW425). 

• Design: Compact, portable, tough armoured case, large clear display. 

• User-Friendly: Simple two-wire operation, auto frequency detection, noise warning, quick auto setup. 

• Complete Kit: LTW315/LTW325/LTW335/LTW425 tester, test leads (red/green or mains plug or fused), carry case; no additional accessories or warranty specified.

The Megger LTW300 series (LTW315, LTW325, LTW335, LTW425) 2 Wire Loop Impedance Testers are designed for verifying loop impedance in live circuits without tripping 30 mA RCDs, supporting single and three-phase systems across 16-400 Hz frequencies.

They measure loop impedance to 0.01 Ω resolution (0.001 Ω on LTW425), supply voltage (50-550 V), and frequency, with maxZ and R1+R2 calculation on higher models, and data download on LTW335/LTW425. The compact, tough armoured case ensures reliability in poor conditions, with auto frequency detection and noise warnings for accurate results.

Rated CAT IV 300 V and IP54, the kit includes the tester, test leads, and carry case, with no warranty specified, ideal for installation, maintenance, and checking electrical systems in commercial and industrial settings.