Insulation Testers
Basic Maintenance
7
Insulation Resistance Maximum and Minimum Display Values (cont.)
50 V 100 V 250 V 500 V 1000 V
Limit
Value
Minimum
Display
Value
Limit
Value
Minimum
Display
Value
Limit
Value
Minimum
Display
Value
Limit
Value
Minimum
Display
Value
Limit
Value
Minimum
Display
Value
90.0 117.0 90.0 117.0 90.0 117.0 90.0 117.0
100.0 130.0 100.0 130.0 100.0 130.0
200.0 260.0 200.0 260.0
300.0 390.0 300.0 390.0
400.0 520.0 400.0 520.0
500.0 650.0
600.0 780.0
700.0 910.0
800.0 1040.0
900.0 1170.0
1000.0 1300.0
2000.0 2600.0
Earth-Bond Resistance Maximum Display Values (Models 1503 and 1507)
Limit Value
Maximum
Display Value
Limit Value
Maximum
Display Value
Limit Value
Maximum
Display Value
0.4 0.28 7.0 4.9 100.0 70.0
0.5 0.35 8.0 5.6 200.0 140.0
0.6 0.42 9.0 6.3 300.0 210.0
0.7 0.49 10.0 7.0 400.0 280.0
0.8 0.56 20.0 14.0 500.0 350.0
0.9 0.63 30.0 21.0 600.0 420.0
1.0 0.7 40.0 28.0 700.0 490.0
2.0 1.4 50.0 35.0 800.0 560.0
3.0 2.1 60.0 42.0 900.0 630.0
4.0 2.8 70.0 49.0 1000.0 700.0
5.0 3.5 80.0 56.0 2000.0 1400.0
6.0 4.2 90.0 63.0
Basic Maintenance
This basic maintenance section of the manual contains tests and procedures that require
no equipment other than the Meter and some consumables such as fuses and batteries.
Also, internal access is limited to the battery and fuse compartment.
Cleaning
When cleaning is necessary, wipe the Meter with a damp cloth and mild detergent. Do
not use abrasives or solvents. Dirt of moisture on the terminals can affect readings.
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