6
Electrical installation
Installation notes
Operating Instructions – Explosion-Protected MOVI-SWITCH
®
Drives
24
6
Electrical installation
6.1
Installation notes
Observe the following information on electrical installation:
•
Observe the general safety notes.
•
Comply with all instructions referring to the technical data and the permissible con-
ditions where the unit is operated.
•
Use suitable screw fittings for the cables (use reducing adapters if necessary).
With connector plug variants, you must use a suitable mating connector.
•
Seal open cable entries with screw plugs.
•
Use protective caps to seal plug connectors not in use.
6.2
Installation instructions
6.2.1
Cable glands
INFORMATION
The terminal boxes have metric threaded holes according to EN 60079-0 and
EN 60079-31. All bores are equipped with explosion-protected screw plugs upon de-
livery.
•
In order to provide for a correct cable entry, you have to replace the screw plugs
with cable glands with strain relief, that are certified for the use in the respective
explosion-protected zone.
•
Select the cable glands according to the diameter of the respective cable. For fur-
ther information, refer to the documentation from the cable gland manufacturer.
•
The cable glands must comply with the requirements according to EN 60079-0
and EN 60079-31. The degree of protection must be ensured in accordance with
the data on nameplate.
•
For ambient temperatures > 40 °C, you have to use cable glands and cables that
are suited for a temperature > 90 °C.
•
Close all cable entries you do not require with suitable closing plugs.
6.2.2
Connecting supply system cables
•
The rated voltage and frequency of MOVI-SWITCH
®
must correspond to the data
for the power supply system (mains).
•
Install line fuses at the beginning of the power supply cable behind the supply bus
junction, see F11/F12/F13 in chapter "Connection of MOVI-SWITCH
®
".
Use only D, D0 or NH fuses, or circuit breakers for F11/F12/F13. Select the fuse
size according to the cable cross section.
25988670/EN – 04/2020
