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6.2
Output connection
SITOP PSU8400 power supplies provide an isolated (= non-grounded) SELV (ES1) output
voltage (Safety Extra Low Voltage (Electrical energy source class 1)). The power supply
output is isolated and is short-circuit and no-load proof. If an overload occurs, the electronic
current limiting function limits the output current to a maximum value (see Chapter
Technical data (Page 79)).
Figure 6-2
The output voltage is connected via the "+" and "-" terminals at the output of the power
supply (see Figure Output voltage connection (Page 53)). Ensure that the output cables are
dimensioned correctly for the maximum output current rms value and fused accordingly.
The subsequent digit, e.g.: "+1" designates the unique terminal connection, therefore
simplifying correct wiring.
Note
If the safety concept of the plant or system specifies that the DC output circuit should be
grounded (PELV), then it is permissible that the output voltage of the SITOP power supply is
grounded. In this case, ideally, the grounding at the output should be directly connected
from terminal "-" of the power supply to a suitable connection point of the protective
conductor system (PE) of the plant or system.
SITOP PSU8400
Equipment Manual, 04.2024, A5E52642642-1-76
Output voltage connection
Installation
6.2 Output connection
53
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