Greenlee 5990A Manuel D'instructions page 6

Important Safety Information
Electric shock hazard:
• Do not attempt to repair this unit. It contains no user-serviceable parts.
• Do not expose the unit to extremes in temperature or high humidity. See Specifications.
Failure to observe these precautions may result in injury and can damage the unit.
Working with the instrument:
• Equipment under test must be switched off (i.e. de-energized) before test leads are con-
nected to the equipment.
• Do not touch any conductive parts of equipment under test during the test.
• Make sure that the tested object is disconnected (mains voltage disconnected) before start-
ing the Insulation Resistance measurement!
• Do not touch the tested object whilst testing it, risk of electric shock!
• In case of a capacitive test object (long tested cable etc.), automatic discharge of the object
may not be done immediately after finishing the measurement – "Please wait, discharging"
message will be displayed.
Handling with capacitive loads:
• Note that 40 nF charged to 1 kV or 9 nF charged to 5 kV are hazardous live!
• Never touch the measured object during the testing until it is totally discharged.
• Maximum external voltage between any two leads is 600 V (CAT IV environment).
6
Electric shock hazard:
Contact with live circuits can result in severe injury or death.