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Page 28
Due to RMS continuous product improvement policy this information is subject to change without notice. 1S20_User_Guide/Iss C/10/07/23
Installation
Handling of Electronic Equipment
A person’s normal movements can easily generate electrostatic potentials of several thousand volts.
Discharge of these voltages into semiconductor devices when handling electronic circuits can cause
serious damage, which often may not be immediately apparent, but the reliability of the circuit will have
been reduced.
The electronic circuits of Relay Monitoring Systems Pty Ltd products are immune to the relevant
levels of electrostatic discharge when housed in the case. Do not expose them to the risk of
damage by withdrawing modules unnecessarily.
Each module incorporates the highest practicable protection for its semiconductor devices.
However, if it becomes necessary to withdraw a module, the following precautions should be taken
to preserve the high reliability and long life for which the equipment has been designed and
manufactured.
1. Before removing a module, ensure that you are at the same electrostatic potential as the
equipment by touching the case.
2. Handle the module by its front-plate, frame, or edges of the printed circuit board.
3. Avoid touching the electronic components, printed circuit track or connectors.
4. Do not pass the module to any person without first ensuring that you are both at the same
electrostatic potential. Shaking hands achieves equipotential.
5. Place the module on an antistatic surface, or on a conducting surface which is at the same
potential as you.
6. Store or transport the module in a conductive bag.
If you are making measurements on the internal electronic circuitry of equipment in service, it is
preferable that you are earthed to the case with a conductive wrist strap.
Wrist straps should have a resistance to ground between 500k
– 10M ohms. If a wrist strap is not
available, you should maintain regular contact with the case to prevent the build-up of static.
Instrumentation which may be used for making measurements should be earthed to the case
whenever possible.
