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Installation
Hazard due to electric shock
Before installation or maintenance work can begin, the system's main switch must be
switched off and measures taken to prevent it being switched on again. If this instruction is
not observed, touching live parts can result in death or serious injury.
5.1
Line-side connection
The SITOP PSU300M/300B power supply is designed for connection to a 3-phase AC line
supply (TN or TT system according to VDE 0100 T 300/IEC 364-3) with a rated voltage of
3-phase 400-500 V AC, 50/-60 Hz, IT system with rated voltages 3-phase 400-480 V AC.
Figure 5-1
The line supply is connected using terminals L1, L2, L3 and PE (see Figure 5-1 Line
connection (example: 6EP1456-3BA00) (Page 35)), and must be implemented according to
IEC 60364 and EN 50178 . A protective device (miniature circuit breaker or circuit breaker)
and a disconnection unit for the power supply must be provided. A ground-fault circuit
interrupter is not permissible against indirect contact as the only protective measure. This
applies for the complete line supply protected by the ground-fault circuit interrupter.
SITOP PSU300M/300B
Manual, 11.2014, C98130-A7574-A2-2-7629
WARNING
Line connection (example: 6EP1456-3BA00)
5
35
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