User's Manual

Insulation Testers
Electrical Specifications
5
Model 1503
Output Voltage Display Range Resolution Test Current
Accuracy
± (% of Rdg + Digits)
0.01 to 20.00 MΩ 0.01 MΩ
20.0 to 200.0 MΩ 0.1 MΩ
500 V
(0 % to + 20 %)
200 to 500 MΩ 1 MΩ
1 mA @ 500 kΩ ± (2.0 % + 5)
0.1 to 200.0 MΩ 0.1 MΩ
1000 V
(0 % to + 20 %)
200 to 2000 MΩ 1 MΩ
1 mA @ 1 MΩ ± (2.0 % + 5)
EN61557 Specification (Models 1503 and 1507)
The following tables are a requirement for European labeling.
Measurement Intrinsic Uncertainty Operating Uncertainty
[1]
Volts
± (2.0 % + 3)
30 %
Earth-Bond Resistance
± (1.5 % + 3)
30 %
Insulation Resistance
Depends on test voltage and range.
See Insulation Test specifications.
30 %
[1] This specification comes from the standard and indicates the maximum amount allowable by the standard.
EN61557 Influence Variables and Uncertainties (Models 1503 and 1507)
Earth-Bond Resistance
Influence Variable
Designation per EN61557
Uncertainty for Insulation
Resistance
1
Uncertainty for Earth-Bond
Resistance
[1]
Supply Voltage E2 5 % 5 %
Temperature E3 5 % 5 %
[1] Specification confidence level 99 %.