Electrical Connections; Access To Terminals; Wall-Mounted Instruments; Panel-Mounted Instruments - ABB 9438 User Manual

3 ELECTRICAL CONNECTIONS

Warning.
• Before making any connections, ensure that the power supply, any high voltage-operated control circuits and high common
mode voltage are switched off.
• Although certain instruments are fitted with internal fuse protection, a suitably rated external protection device, e.g. fuse or
miniature circuit breaker (m.c.b.), must also be fitted by the installer.

3.1 Access to Terminals

3.1.1 Wall-mounted Instruments – Fig. 3.1
1
slide
down
2
Pull out
slightly. . .
2
Fig. 3.1 Access to Terminals –
Wall-mounted Instrument
6
Remove
protection
cover
4
3
Slacken
captive
Earth Studs
screws
. . . and
slide off
3.1.2 Panel-mounted Instruments – Fig. 3.2
1
Remove nuts and
protection cover
Fig. 3.2 Access to Terminals – Panel-mounted
Instrument (Rear View)
Earth Stud
Mains
Cover
Remove
2
mains cover