User Guide

Clamp-on Ground Resistance Tester Model 6416 3
PRECAUTIONS FOR USE
This instrument and its accessories comply with safety standards EN 61010-1,
EN 61010-030, and EN 61010-2-032 for voltages of 600V in Category IV at an
altitude of less than 2000m with a pollution degree of not more than 2.
Failure to observe the safety instructions may result in electric shock, re,
explosion, and destruction of the instrument and of the installations.
■ The operator and/or the responsible personnel must carefully read and clearly
understand the various precautions to be taken in use. Sound knowledge
and a keen awareness of electrical hazards are essential when using this
instrument.
■ If you use this instrument other than as specied, the protection it provides
may be compromised, thereby endangering you.
■ Do not use the instrument on networks of which the voltage or category
exceeds those mentioned.
■ Do not use the instrument if it seems to be damaged, incomplete, or poorly
closed.
■ Before each use, check the condition of the insulation on housing. Any item
of which the insulation is deteriorated (even partially) must be set aside for
repair or scrapping.
■ Use personal protection equipment systematically.
■ When handling the instrument, keep your ngers behind the physical guard.
■ All troubleshooting and metrological checks must be performed by competent
and accredited personnel.
■ Avoid impacts on the measurement head, in particular the air gap.
■ Keep the surfaces of the air gap clean; even a little dirt can cause the clamp
to malfunction.
■ 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
ground wire away from the equipment being grounded.