User Manual
  GETTING STARTED 
27 
Operating Precautions 
Background 
The GPT-9000/9000A is a high voltage 
instrument that outputs dangerous voltages. 
The following section describes precautions and 
procedures that must be followed to ensure that 
the tester is operated in a safe manner. 
 WARNING 
The GPT-9000/9000A generates voltages of up to 
5kVAC or 6kVDC. Follow all safety precautions, 
warnings and directions given in the following 
section when using the instrument. 
1.  Never touch the safety tester, lead wires, 
terminals, probes and other connected 
equipment when the tester is testing. 
2.  Do not turn the safety tester on and off quickly 
or repeatedly. When turning the power off, 
please allow a few moments before turning the 
power back on. This will allow the protection 
circuits to properly initialize.  
Do not turn the power off when a test is 
running, unless in an emergency. 
3.  Only use those test leads supplied with the 
instrument. Leads with inappropriate gauges 
can be dangerous to both the operator and the 
instrument. 
For GB testing, never use the Sense leads on the 
SOURCE terminals. 
4.  Do not short the HIGH VOLTAGE terminal 
with ground. Doing so could charge the chassis 
to dangerously high voltages. 










