ABB ETL600 Instruction Manual page 28

ABB Switzerland Ltd
Electrical Installation
DANGER
DANGER
DANGER
DANGER
DANGER
Caution
Caution
Back cover
DANGER
Work on the sys
DANGER
2-4
1KHW001489-EN
This is a Class Ι equipment as specified in
IEC60950. The equipment and the cabinet must be
earthed.
The equipment must be supplied over the "circuit
breaker for the power supply", type B9AS.
The circuit breaker for the power supply (B9AS) of
the equipment must be switch OFF.
The circuit breakers for optional equipment in the
cabinet must be switch OFF.
Do not connect or disconnect energized cables to or
from the equipment.
The isolating terminals from the external cables
must be kept open during installation, maintenance
and before storage, decommissioning and disposal.
Faston plugs on the cables connected to the rack
P7LA must be covered with an isolation sleeve.
Unused faston connectors have to be covered.
Connecting a load between terminals NO (normal
open) and NC (normally closed) is no
Use only one contact set NO or NC.
Power supplies connected to alarm relay contacts
must be short circuit and over current protected.
Hazardous voltages and/or hazardous energy level
behind the back cover. Before removing the back
cover, the isolating terminals of the external cables
must be opened or the cables to the terminals must
be di sconnected.
tem
Do not work on the system or connect or disconnect
cables during periods of lightning activities.
November 2005
ETL600
ly
t allowed.
Safety Instructions