Megger DET3TD Earth Tester

• Measurements: 2/3-pole resistance (0.01 Ω to 2 kΩ, ±2% ±3 digits), ART resistance (DET3TC, ±5% ±3 digits), ground voltage (0-100 V, ±2% ±2 V), leakage current (DET3TC, 0.5 mA to 19.9 A, ±5% ±3 digits). 

• Functionality: 2/3-pole and ART (DET3TC) testing, user-selectable 25/50 V test voltage, 128 Hz test frequency, noise rejection (40 V pk-pk), automatic C/P spike checks, bonding tests, supports BS 7430, BS-EN-62305, IEEE 81. 

• Design: Compact (203 x 148 x 78 mm), 1 kg, IP54, CAT IV 100 V, operates -15°C to 55°C, 95% RH, powered by 8x AA batteries (700 tests). 

• User-Friendly: Simple one-button operation, large LCD, automatic noise/spike detection, voltmeter for safety, rugged for outdoor use. 

• Complete Kit: DET3TD/DET3TC tester, 3-wire lead set (15 m red, 10 m yellow, 4 m green), 2x ground stakes (200 mm), hard carry case, batteries, calibration certificate; optional MCC1010 clamp, ETK kits (30/50/100 m cables, spikes, hammer); no warranty specified.

The Megger DET3 Contractor Series (DET3TD/DET3TC) Earth Testers measure ground resistance (0.01 Ω to 2 kΩ) and voltage (0-100 V) for primary/secondary grounding, lightning protection, and communication systems.

The DET3TC adds ART for testing without disconnecting utility grounds and measures leakage current (0.5 mA to 19.9 A). With 25/50 V test voltages, 128 Hz frequency, and 40 V noise rejection, they comply with BS 7430, BS-EN-62305, and IEEE 81. Compact (1 kg), IP54, and CAT IV 100 V, they operate in -15°C to 55°C with 8x AA batteries (700 tests). T

he kit includes leads, stakes, and a carry case, with optional ETK kits and MCC1010 clamp. No warranty specified, ideal for grounding system maintenance in industrial and utility settings.