VOLTECH AT3600 USER MANUAL SAFETY SYSTEMS
SAFETY SYSTEMS VPN 98 - 024 PAGE 10.3.
1. SAFETY SYSTEMS
1.1. INTRODUCTION
Many of the tests available with the AT series testers are capable of generating
dangerously high voltages, which could cause operator injury unless proper safety
precautions are taken.
With this in mind, the rear panel of the AT3600 and some AT accessories have been
designed with a safety interlock connector, which is described in the user manual of
those products.
Unless the three safety interlock signals on this connector are properly made, the tester
will not generate any dangerous voltages.
It is possible for you to use your tester without connecting the safety interlocks; but you
will then be restricted to only ‘low voltage’ tests. If you wish to make full use of your
tester and use any test that can generate high voltages, including
• Magnetizing Current
• Open Circuit Voltage
• Insulation Resistance
• Hi-Pot (DC)
• Wattage
• Hi-Pot (AC)
• Surge Stress Test
• Hi-Pot Ramp (AC)
• Hi-Pot Ramp (DC)
then you must have a safety system operating the safety interlocks.
Note: Dangerous voltages may also be produced when testing transformers and
inductors in the presence of a dc bias current. Sudden removal of the dc current will
generate high voltages across the part under test.
The details of any particular safety system installation could vary depending on where
the tester is being used. In a robotic production line, for example, the tester could be
located in an enclosed area, and the safety switches could be mounted in the door.
With manual production, the safety system could be based on a physical barrier, for
example, a ‘lid’ fitted with safety interlock switches. However, the requirement to
open and close such a barrier will give a slower speed of test, and often the reduced
production throughput that follows from this may not be acceptable.
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