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4
PREPARING
FOR TEST
4.1 Site Preparation
Choose a location that meets the following condi-
tions:
• The location is as dry as possible.
• There is no flammable material stored in the
vicinity.
• The test area is adequately ventilated.
• The test area is flat surface.
• Be sure all equipment is de-energized and all
terminals of the UUT are accessible.
• Erect suitable safety barriers to protect the oper-
ator from traffic hazards and to prevent intru-
sion by unauthorized personnel. User provided
Warning lights are recommended.
• Verify that the Local station ground is intact and
has impedance continuity to earth.
Ensure UUT is completely de-energized.
Check every winding. Ensure all terminals
are disconnected from line or load at the
UUT. Grounds may be left in place.
For all testing described herein, care shall
be taken to ensure any and all unused
clamps are isolated from each other, from
ground, and from personnel.
16 TTRU3 User Manual www.megger.com
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