Man-1128_K25400_series_Power_Supply_Manual_15
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3.3 Connecting to the mains Input
Do not connect a mains supply unless the supply voltage matches that shown on the rating plate.
A minimum cable size of 0.75mm must be used. Maximum cable size is 4.0mm².
Fit the mains cable via a suitable 94HB flame rated cable gland via a knockout close to the power supply unit. Connect
the Neutral of the mains power supply to the terminal marked N, connect the Live of the mains power supply to the
terminal marked L and connect the earth to the terminal marked E.
The mains wiring should be as short as is practical with no excess lengths or larger loops and be separated from all
extra low voltage wiring such as 24V supply wiring and battery leads. Ensure that all wires are fitted into the terminals
without any exposed lengths or strands which may give rise to exposure to electrical shock.
This equipment is designed to be operated from 230V 50Hz mains supplies and is of class 1 construction. As such it
must
be connected to a protective earthing conductor in the fixed wiring of the installation and a readily accessible
double pole disconnect device meeting the requirements of EN60950/IEC950 which disconnects live and neutral
simultaneously shall be incorporated in the fixed wiring as close to the unit as is practical
.
If the earth terminal is the primary earth of the end use application then apply the earth symbol (IEC415 No.5017)
next to this terminal. Ensure that all screws in the earth terminal block (including those that are not used) are
tightened during installation.
