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P403-3222 Rev. K 4/18
If the ground set fails (red light) there are two possibilities.
1.
The ground set has a problem. Use probes to identify the high resistance section. See section
GROUND SET TROUBLESHOOTING WITH PROBES.
2.
Cable is improperly sized for the application (AWG or length). See Appendix A for maximum
resistance determination.
GROUND SET TEST PROCEDURE
Use the Self Test Procedure to verify operation of the Ground Set Tester before testing Ground Sets.
1.
Place the tester on a table of convenient height and plug it into a nominal 120/240V AC outlet.
2.
Thread the attachment studs into the fixed connection inputs.
3.
Securely connect the Grounding Set to be tested to the attachment studs. A low resistance connection
must be maintained while testing the ground set. (Figure 3 shows typical test setup.)
4.
Turn on the unit. The power switch will illuminate when the power is on.
5.
Use the ‘CABLE SIZE’ switch to select the cable size being tested. The cable size is displayed at the
end of the first line of the display.
6.
Place the ‘INPUT SELECT’ in the ‘FIXED’ position.
7.
Place the ‘CONTINUOUS TEST’ switch in the ‘OFF’ position.
8.
Press the ‘SINGLE TEST’ switch.
9.
The display will show the measured resistance between fixed connections on line 2 of the display
in mΩ.** When used in fixed mode the resistance displayed includes the contact resistance of the
connection studs to the ground set. The red light will illuminate if the ground set resistance is above
the preset threshold shown on line 1 of the display (see notice below). The green light will illuminate
if the ground set resistance is below the preset threshold. NOTE: Ground sets to be used in parallel
with the worker must pass the preset threshold resistance. Ground sets not used in parallel with the
worker must meet the expected resistance for the cable size and length. Refer to Section “EXPECT-
ED GROUND SET RESISTANCE” for Ground Sets not covered by preset threshold.
Chance protective ground set tester is not designed nor recommended for detecting cable flaws. Prob-
lems with the cable, away from the ferrule exit area, are often intermittent in nature.
**mΩ (milli ohm) = 0.001 ohm
WARNING
!
NOTICE