Key Features:

✅ Non-Intrusive Testing – Measures ground resistance without auxiliary spikes or disconnecting ground rods, saving time and effort. ✅ Wide Measurement Range – 0.1Ω to 1200Ω with high accuracy (±1.5% ±0.1Ω). ✅ Auto Current Detection (AC) – Detects leakage current (0.2mA–30A) to identify faulty grounding. ✅ High Noise Immunity – Stable readings even in electrically noisy environments. ✅ Large LCD Backlight Display – Clear readings in low-light conditions. ✅ Data Hold & MAX/MIN Recording – Captures critical measurements for analysis. ✅ Durable Clamp Design – 32mm jaw opening for easy attachment to ground conductors. ✅ Safety Compliance – Meets CAT IV 300V safety standards for reliable operation.

Applications:

✔ Power substations & transmission line inspections ✔ Telecom tower & lightning protection system testing ✔ Industrial plant & building ground system maintenance ✔ Electrical safety audits & preventive maintenance

Specifications:

• Measurement Range:

  • Ground Resistance: 0.1Ω–1200Ω

  • Leakage Current: 0.2mA–30A AC

• Accuracy: ±1.5% ±0.1Ω

• Jaw Opening: 32mm

• Display: LCD with backlight

• Safety Rating: CAT IV 300V

• Power Supply: 4×1.5V AA batteries

• Dimensions & Weight: 243×85×46mm, 650g

Why Choose the UNI-T UT278D?

• No need to disconnect ground wires—test live systems safely.

• Faster than traditional 3-pole methods—perfect for field technicians.

• Robust & portable—ideal for on-site inspections.

Upgrade your testing toolkit with the UT278D—the smarter way to measure earth resistance!

Recommended for:

• Electricians & electrical contractors

• Telecom & utility maintenance teams

• Industrial safety inspectors

• Renewable energy system installers

Enhance Your Listing With:

📌 High-resolution images (clamp in action, display close-up, jaw design). 📌 Comparison table (vs. traditional earth resistance testers). 📌 Included accessories (batteries, carrying case, user manual). 📌 Videos/Demo (showing live testing scenarios).