Safety Instructions - ABB 500 Operating Instructions Manual

Overview
Warnings
DCS 500B / DCP 500B Operating Instructions
This chapter contains safety instructions which must be complied
with during installation, operation and maintenance of the power
converters series DCS 500B / DCF 500B or DCP 500B. If these in-
structions are not complied with, this may result in injuries (perhaps
even with fatal) or in damage to the power converter, the motor and
the driven machine. Before starting with any work whatsoever at or
with this unit, you must read the information given in this chapter.
Warnings provide information on states which if the specified pro-
cedure for the state concerned is not meticulously complied with
may result in a serious error, in major damage to the unit, in injury
to persons and even in death.
They are identified by the following symbols:
Danger: High Voltage! This symbol warns you of
high voltages which may result in injuries to persons
and/or damage to equipment. Where appropriate, the
text printed adjacent to this symbol describes how
risks of this kind may be avoided.
All electrical installation and maintenance work on the thyristor
power converter must be carried out by properly qualified staff
who have been thoroughly trained in electrical engineering.
The thyristor power converter and its adjacent units must be
properly earthed by qualified professionals.
You must NEVER perform any work on the thyristor power con-
verter while it is still switched on. First switch the unit off, use a
measuring instrument to make absolutely sure that the power
converter has really been de-energized, and only then you may
start with the work concerned.
Due to external control circuits, there may be dangerously high
voltages present at the thyristor power converter even after the
line voltage has been switched off. So always work at the unit
with appropriate caution! Non-compliance with these instructions
may result in injury (or even death!).
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Safety Instructions

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