Specifications
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)