Digital Ground Resistance Tester Model 4500
13
Table 4 shows the maximum resistance of the current circuit (Rx + Rz) for
stray voltage of 10V peak-to-peak.
Range
Current
50 mA
10 mA
2 mA
Rx + Rz = 400
Ω
max
Rx + Rz = 3000
Ω
max
Rx + Rz = 15 k
Ω
max
2
Ω
20
Ω
200
Ω
2 k
Ω
20 k
Ω
Do not use
Table 4
3.6
Mechanical Specifications
Display:
2000-count, 7 segment LCD, .71" (3-1/2 digit)
Connection:
Via terminals (wires; forked lugs with min gap of 6mm) banana jacks with
Ø 4mm
Operating Temperature:
14° to 122°F (-10° to 50°C)
Case:
Heavy-duty plastic, with detachable cover and carrying handle
Colors:
Case - Safety yellow; Front Panel - Brown
Dimensions:
15.75 x 10.2 x 9.8" (400 x 260 x 250mm)
Weight:
14 lbs (6.5 kg) approximate
