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1507/1503

Users Manual

Earth-bond Resistance Measurement

Range Resolution

Accuracy

(% of Rdg + Digits)

20.00 Ω 0.01 Ω

200.0 Ω 0.1 Ω

2000 Ω 1 Ω

20.00 kΩ 0.01 kΩ

(1.5 % + 3)

1. Accuracies apply from 0 to 100% of range.

Overload Protection ............................................2 V rms or dc

Open Circuit Test Voltage...................................> 4.0 V, < 8 V

Short Circuit Current ...........................................> 200.0 mA

Insulation Specifications

Measurement Range...........................................0.01 MΩ to 10 GΩ model 1507, 0.01 MΩ to 2000 MΩ model 1503

Test Voltages ......................................................50, 100, 250, 500, 1000 V model 1507, 500 and 1000 V model 1503

Test Voltage Accuracy ........................................+ 20 %, - 0 %

Short-Circuit Test Current ...................................1 mA nominal

Auto Discharge....................................................Discharge time <0.5 second for C = 1 µF or less

Live Circuit Detection: .........................................Inhibit test if terminal voltage > 30 V prior to initialization of test.

Maximum Capacitive Load..................................Operable with up to 1 µF load.