Safety Information - ABB REM 543 Technical Reference Manual

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REM 543 Protection,
Monitoring and Control

Safety Information

Dangerous voltages can occur on the connectors, even though the auxiliary voltage
is disconnected.
National and local electrical safety regulations must always be followed.
The frame of the protection terminal has to be carefully earthed.
Only a competent electrician is allowed to carry out the electrical installation.
Technical Reference Manual
Part 1, General
Page 7