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UNI-T UT273+ Clamp Earth Resistance Tester | Long Jaw Ground Tester
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The UNI-T UT273+ is a professional Clamp Earth Resistance Tester featuring a unique long jaw designed for flat steel conductors.
- Long Jaw Design (55×32mm): Ideal for testing flat steel grounding straps.
- Dual Measurement: Tests Earth Resistance (0.01Ω-600Ω) and Leakage Current (0-20A).
- Data Logging: Stores up to 500 data sets with USB PC connectivity.
- Display: Clear EBTN screen for visibility in all lighting conditions.
- Safe Operation: Non-contact measurement without disconnecting ground wires.
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Description
UNI-T UT273+ Clamp Earth Resistance Tester (Long Jaw)
The UNI-T UT273+ Clamp Earth Resistance Tester is a premium tool designed for safe and efficient grounding system maintenance. Unlike standard earth testers, the UT273+ features a unique Long Jaw design (55mm × 32mm), making it the perfect solution for clamping onto flat steel grounding straps commonly found in industrial facilities, telecommunications towers, and gas stations.
Engineered for reliability, this device performs non-contact measurements, allowing technicians to test loop resistance and leakage current without disconnecting the ground wire or using auxiliary electrodes. It boasts a wide resistance range of 0.01Ω to 600Ω and can detect leakage currents up to 20A. With built-in memory for 500 data sets, a visual/audible alarm system, and USB connectivity for PC analysis, the UT273+ is the ultimate choice for professional electrical inspections.
UNI-T UT273+ Key Features:
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Long Jaw Advantage: Extra-wide 32mm jaw specifically designed for testing flat conductors and thick cables.
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Dual Measurement Mode: Simultaneously measures Earth Resistance and Leakage Current.
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Smart Alarms: User-programmable audible and visible alarms for resistance limits.
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Interference Resistance: Advanced filtering technology ensures stable readings even in noisy electrical environments.
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Data Management: Internal storage for 500 readings plus USB interface for data export and report generation.
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Robust Build: CAT III 300V safety rating with an ergonomic, anti-slip design.
Datasheet
Datasheet
Specifications
Specifications
| UNI-T UT273+ Technical Specifications | |
|---|---|
| Earth Resistance (Ω) | |
| 0.010Ω – 0.199Ω | ±(1% + 0.02Ω) |
| 0.20Ω – 1.99Ω | ±(1% + 0.05Ω) |
| 2.0Ω – 49.9Ω | ±(1% + 0.5Ω) |
| 50.0Ω – 99.5Ω | ±(1.5% + 1Ω) |
| 100Ω – 199Ω | ±(2% + 2Ω) |
| 200Ω – 395Ω | ±(5% + 5Ω) |
| 400Ω – 590Ω | ±(10% + 10Ω) |
| 590Ω – 600Ω | ±(20% + 20Ω) |
| Current Measurement (AC) | |
| 1.00mA – 9.99mA | ±(2.5% + 1mA) |
| 10.0mA – 99.9mA | ±(2.5% + 5mA) |
| 100mA – 999mA | ±(2.5% + 10mA) |
| 1.00A – 9.99A | ±(2.5% + 0.2A) |
| 10.0A – 20.0A | ±(2.5% + 0.5A) |
| Features | |
| Jaw Size | 55mm × 32mm (Long Jaw) |
| Screen Type | 4-digit EBTN screen |
| Data Storage | 500 sets |
| Data Transmission | Yes (via USB cable) |
| Sample Rate | 1 time/s |
| Timer Function | Yes |
| Protection & Alarm | Overload Protection, Anti-interference, Alarm Function |
| Safety Rating | CAT III 300V, CAT IV 150V |
| General Characteristics | |
| Product Dimension | 285mm × 85mm × 58mm |
| Net Weight | 1180g (batteries included) |
| Standard Accessories | User manual, AA batteries (4pcs), Calibration loop, USB cable, Tool box |
| Standard Quantity Per Carton | 1 pcs/carton |
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