User Manual

4
3. Specifications
3-1 Standards
Designed to meet:
IEC 61557-2: Insulation Tester
IEC 61557-5: Earth Resistance Tester
IEC 61010-1 over-voltage category CAT.
e
600V, pollution degree 2
3-2 Insulation Resistance Ranges and Accuracy
Function 1000V/2000MΩ
1000V
0-2000M
Ω
50M Ω
1000VDC+20%
–0%
1-1.6mADC or less
(Measured with an ammeter with a voltage drop of 500mV or less)
1-1.2mADC or less
(Measured with an ammeter with a voltage drop of 500mV or less)
at 1M Ω
2-1000M Ω
± 5% of indicated value
Ranges other than the above range, 0 and
∞
± 10% of indicated value
0.7% of scale length
0.1-50M
Ω 0.05-20M Ω 0.02-10M Ω
at 0.5M Ω at 0.25M Ω at 0.125M Ω
500VDC+20%
–0%
250VDC+20%
–0%
125VDC+20%
–0%
2M Ω 1M Ω 0.5M Ω
0-100M Ω 0-50M Ω 0-20M Ω
500V 250V 125V
500V/100MΩ 250V/50MΩ 125V/20MΩ
Rated Test Voltage
Measuring Range
Mid-scale Value
Output Voltage at Open
Circuit
Short-circuit Current
Rated Test Current
Accuracy in Primary Effective
Measuring Range
Accuracy in Secondary
Effective Measuring Ranges
Accuracy at 0 and ∞
3-3 Earth Resistance Ranges and Accuracy: Precision Measurement
Function
Measuring Range
Accuracy
Output Current
X 1 Ω
0-12Ω
± 3% of full scale value
（
The earth resistance at auxiliary earth spike is
within 10kΩ
）
2.5mA AC max., 820 ±10Hz
0-120Ω 0-1200Ω
X 10 Ω X 100 Ω