AEMC 4500 - Accuracy

10 Digital Ground Resistance Tester Model 4500
Charging Time: 14 hours typical
Charging Supply Voltage:Internallyselectable110/220V,45to450Hz
Low Battery Indication: Battery can be recharged with built-in dual volt-
agechargingunit:94to127Vor187to253V(47to450Hz).
WARNING: Do not fully discharge batteries.
Fuse Protection: 250Vrms(measurementcircuit)via3.15A250Vfuse
3.2 Accuracy
Range
Resolution
Test
Current
Accuracy
in % of
Reading
* Maximum Value of
Y and Z Electrodes
Having Influence < 1%
Ry
Rz
2Ω
2 mA
± 5mΩ ± 1ct
± 2% ± 1ct
± 2% ± 1ct
of 10% to 100%
of full scale
5kΩ
10kΩ
± 2% ± 30mΩ
± 1ct
± 2% ± 3m
Ω ± 1ct
0 to
0.2Ω
0.2Ω
to 2Ω
1mΩ
1mΩ
10mΩ
0.1Ω
1Ω
10Ω20kΩ
2kΩ
200Ω
20Ω
600Ω
to 20kΩ
to be
selected
in relation
to the test
current
10mA
50mA
2mA
10mA
50mA
2mA
10mA
50mA
2mA
10mA
50mA
2mA
10mA
50mA*
2mA*
10mA*
50mA*
No accuracy specification - do not use
* See Table III for maximum auxiliary resistance
5k
Ω
5kΩ