Connections; Electrical Connections - DAB AD x.x AC series Installations- Und Wartungsanleitungen

2.2 Connections

All the electrical connections are accessible by removing the screw on the cover, as shown in Figure 3.
Before performing any installation or maintenance operation, disconnect the inverter from the
electrical mains and wait for at least 15 minutes before touching internal parts.
Ensure that the voltage and frequency values on the inverter data plate correspond to those of the
power mains.
2.2.1

Electrical connections

To improve the immunity to any noise radiated towards other equipment we recommend using separate ducts
for the inverter supply cables.
It is recommended to carry out installation as indicated in the manual, in compliance with the laws, directives
and standards in force in the place of use and depending on the application.
The product contains an inverter inside which there are continuous voltages and currents with high-frequency
components (see table 1a)
Type of possible fault currents to earth
Inverter with single-phase power
supply
Inverter with three-phase power
supply
If a differential switch is used with an inverter with three-phase power supply, in compatibility with the above
indications and with the requirements of system protection, it is advised to use a switch that is protected against
sudden tripping..
Figure 3: Removing the cover to access the connections
Alternating
Table 2a: Type of possible fault currents to eart
ENGLISH
Unipolar
pulsed
 
 
77
With high-
Direct frequency
components

 