Megger Baker DX - Safety Precautions

General Operating Information
2 Baker DX 71-030 User Guide EN V10 www.megger.com
Safety Precautions
Read and follow all safety precautions and safe operating practices in your manual. Do not
exceed maximum operating capabilities of the Baker DX tester, power packs, or the Baker ZTX
accessory.
The general safety information presented here is for both operating and service personnel. You
will find specific warnings and cautions throughout this manual where they apply.
If using the equipment in any manner not specified by Megger Limited, the protection provided
by the equipment may be impaired.
WARNING: Failure to heed the following safety precautions can result in injury
or death from severe electrical shock.
Test Related
 Two-party operation is recommended only when using proper equipment (such as the
remote E-Stop) and when taking appropriate precautions so both operators are aware of
all conditions at all times.
 Always know what test is being performed and when. For example, do not adjust test
leads when operating a footswitch. Leads will have live voltage and severe electrical
shock may result.
 For capacitor-started motors or systems with surge arrestors/power factor capacitors, be
sure to disconnect all capacitors from the test circuit before testing.
 Upon completion of any DC-HiPot, MegOhm, polarization index (PI), step voltage, or
dielectric absorption (DA) tests, be sure to short the winding to ground and allow time
for discharge before disconnecting the test leads. If you do not do this, voltage may
build up on the winding. Some industry standards suggest allowing a winding to
discharge four times the total amount of time that DC voltage is applied to the winding.
 If the tester is removed from the windings before complete discharge, short winding
leads together and ground them using appropriate jumper cables.
 Make sure to disconnect the tester leads before energizing or powering up the motor.
 Never attempt to test a winding with both host and power pack leads attached to the
winding at the same time. Damage to the tester will occur.