| General Specifications | |
| Display: 1999 digit LCD | Display with special symbols, digit height 25 mm, fluorescent backlight |
| User interface | Instant measurement through TURN and START one button concept. The only operating elements are rotary switch and START button |
| Robust, water and dust resistant | Instrument is designed for tough environmental conditions (rubber protective cover, IP56) |
| Memory | Internal memory storage up to 1500 records accessible via USB port |
| Temperature Range | |
| Operating temperature | -10°C to 50°C (14°F to 122°F) |
| Storage temperature | -30°C to 60°C (-22°F to 140°F) |
| Temperature coefficient | ±0.1% of reading/°C < 18°C > 28°C |
| Intrinsic error | Refers to the reference temperature range and is guaranteed for 1 year |
| Operating error | Refers to the operating temperature range and is guaranteed for 1 year |
| Climatic class | C1 (IEC 654-1), -5°C to +45°C (23° to +115° F), 5% to 95% RH |
| Protective type | IP56 for case, IP40 for battery door according to EN60529 |
| Safety | Protection by double and/or reinforced insulation. max. 50 V to earth. IEC61010-1: Pollution degree 2 |
| EMC (emission immunity) | IEC61326-1: Portable |
| Quality system | Developed, designed and manufactured according to DIN ISO 9001 |
| External voltage | V ext, max = 24 V (DC, AC < 400 Hz), measurement inhibited for higher values |
| V ext rejection | > 120 dB (162⁄3, 50, 60, 400 Hz) |
| Measuring time | Typical 6 seconds |
| Max. overload | 250 V rms (pertains to misuse) |
| Auxiliary power | 6 x 1.5 V Alkaline (type AA LR6) |
| Battery life span | Typical > 3,000 measurements |
| Dimensions (W x H x D) | 250 x 133 x 187 mm (9.75 x 5.25 x 7.35 in) |
| Weight | 1.1 kg (2.43 lb) including batteries 7.6 kg (16.8 lb) incl. accessories and batteries in carrying case |
| RA 3-Pole Ground Resistance Measurement (IEC 1557-5) | |
| Switch position | RA 3-pole |
| Resolution | 0.001 Ω to 10 Ω |
| Measuring range | 0.020 Ω to 19.99 kΩ |
| Accuracy | ±(2% rdg + 3 d) |
| Operating error | ±(5% rdg + 3 d) |
| Measuring Principle: Current/Voltage Measurement | |
| Measuring voltage | Vm = 48 V AC |
| Short-circuit current | > 50 mA |
| Measure frequency | 128 Hz |
| Probe resistance (RS) | Max 100 kΩ |
| Auxiliary earth electrode resistance (RH) | Max 100 kΩ |
| Additional error from RH and RS | RH[kΩ]•••RS[kΩ]/RA[Ω]•••0.2% |
| Monitoring of RS and RH with error indicator. Automatic range selection. Measurement is not performed if the current through the current clamp is too low. | |
| RA 4-Pole Ground Resistance Measurement (IEC 1557-5) | |
| Switch position | RA 4-pole |
| Resolution | 0.001 Ω to 10 Ω |
| Measuring range | 0.020 Ω to 19.99 kΩ |
| Accuracy | ±(2% rdg + 3 d) |
| Operating error | ±(5% rdg + 3 d) |
| Measuring Principle: Current/Voltage Measurement | |
| Measuring voltage | Vm = 48 V AC |
| Short-circuit current | > 50 mA |
| Measure frequency | 128 Hz |
| Probe resistance (RS + RES) | Max 100 kΩ |
| Auxiliary earth electrode resistance (RH) | Max 100 kΩ |
| Additional error from RH and RS | RH[kΩ]•••RS[kΩ]/RA[Ω]•••0.2% |
| Monitoring of RS and RH with error indicator. Automatic range selection. | |
| RA 3-Pole Selective Ground Resistance Measurement with Current Clamp (RA with Clamp ) | |
| Switch position | RA 3-pole with clamp |
| Resolution | 0.001 Ω to 10 Ω |
| Measuring range | 0.020 Ω to 19.99 kΩ |
| Accuracy | ±(7% rdg + 3 d) |
| Operating error | ±(10% rdg + 5 d) |
| Measuring Principle: Current/Voltage Measurement (with External Current Clamp) | |
| Measuring voltage | Vm = 48 V AC |
| Short-circuit current | > 50 mA |
| Measure frequency | 128 Hz |
| Probe resistance (RS) | Max 100 kΩ |
| Auxiliary earth electrode resistance (RH) | Max 100 kΩ |
| Monitoring of RS and RH with error indicator. Automatic range selection. Measurement is not performed if the current through the current clamp is too low. | |
| RA 4-Pole Selective Ground Resistance Measurement with Current Clamp (RA with Clamp ) | |
| Switch position | RA 4-pole with clamp |
| Resolution | 0.001 Ω to 10 Ω |
| Measuring range | 0.020 Ω to 19.99 kΩ |
| Accuracy | ±(7% rdg + 3 d) |
| Operating error | ±(10% rdg + 5 d) |
| Measuring Principle: Current/Voltage Measurement (with External Current Clamp) | |
| Measuring voltage | Vm = 48 V AC |
| Short-circuit current | > 50 mA |
| Measure frequency | 128 Hz |
| Probe resistance (RS) | Max 100 kΩ |
| Auxiliary earth electrode resistance (RH) | Max 100 kΩ |
| Monitoring of RS and RH with error indicator. Automatic range selection. Measurement is not performed if the current through the current clamp is too low. | |
| Stakeless Ground Loop Measurement (2 Clamps) | |
| Switch position | RA 4-pole 2 clamps |
| Resolution | 0.001 Ω to 10 Ω |
| Measuring range | 0.020 Ω to 19.99 kΩ |
| Accuracy | ±(7% rdg + 3 d) |
| Operating error | ±(10% rdg + 5 d) |
| Measuring Principle: Stakeless Measurement of Resistance in Closed Loops Using Two Current Transformers | |
| Measuring voltage | Vm = 48 V AC |
| Measure frequency | 128 Hz |
| Noise current (IEXT) | Max. IEXT = 10 A (AC) (RA < 20 Ω) |
| Max. IEXT = 2 A (AC) (RA > 20 Ω) | |
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