10 Rockwell Automation Publication 857-QS001B-EN-P - April 2017
Chapter 1 Overview
General Precautions
Before Installation
WARNING: Have only qualified personnel service this equipment. If you are
not qualified to service this equipment, you can injure yourself or others, or
cause equipment damage.
• Equipment components are sensitive to electrostatic discharge (ESD).
Undetectable permanent damage can result if you do not use proper ESD
procedures. Ground yourself, your work surface, and this equipment before
removing any cover from this equipment.
• Disconnect or de-energize all external connections before opening this
device. Contact with hazardous voltages and currents inside this device can
cause electrical shock that can result in injury or death.
• This document is to be utilized as a startup or a commissioning document
only. Full understanding of the relay protective functions is required before
any unit is placed in full protective mode.
See User Manual 857-UM001
for further details on the Bulletin 857
Protection Relay.
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