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1.1 PRECAUTIONS FOR USE
"It should be impressed on all personnel that a lethal potential can
exist between the station ground and a remote ground if a system
fault involving the station ground occurs while tests are being
made. Since one of the objects of tests on a station ground is the
establishment of the location of an effectively remote point for both
current and potential electrodes, the leads to the electrodes must
be treated as though a possible potential could exist between these
test leads and any point on the station ground grid."
These safety warnings are provided to ensure the safety of personnel and proper
operation of the instrument.
■ The instrument must not be operated in conditions outside of its specified
operating range.
■ Safety is the responsibility of the operator.
■ All metal objects or wires connected to the electrical system should be
assumed to be lethal until tested. Grounding systems are no exception.
■ Use extreme caution when using the instrument around energized electrical
equipment.
■ Never attempt to use the instrument to twist or pry the ground electrode or
wire away from the grounded equipment
■ AEMC
Instruments considers the use of rubber gloves to be an excellent
®
safety practice even if the equipment is properly operated and correctly
grounded.
■ Always inspect the instrument and leads prior to use. Replace any defective
parts immediately.
1.2 RECEIVING YOUR SHIPMENT
Upon receiving your shipment, make sure that the contents are consistent with
the ordering information. Notify your distributor of any missing items. If the
equipment appears to be damaged, file a claim immediately with the carrier and
notify your distributor at once with a detailed description of any damage. Save
the damaged packing container to substantiate your claim.
NOTE: Do not use equipment that appears to be damaged.
Digital Ground Resistance Tester Models 4620 & 4630
- excerpt from IEEE Std. 81-1962
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