Advanced PSU EN54-4, Руководство пользователя, Страница: 9 / 16

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3.2 Wiring Installation
3.2.1 AC Mains Wiring
The power supply is classified as Class1 equipment
construction and must be earthed in accordance to
EN60950 recommendations.
Route the high voltage mains AC wiring into the
enclosure using a suitable knockout and keeping the AC
wiring away from any circuit boards and all other wiring.
The panel must be connected to the supply
earth through the power cable.
The mains input connector is shown in the
diagram opposite. Note the positions of the
earth, neutral and live terminal connections.
These are clearly marked on the label next
to the connector. The connector block
contains an integral fuse holder for a 20mm fuse.
Secure the mains input wiring using a tie wrap as close
to the terminal block as possible.
The fuses are rated as follows:
T 3.15A H 250V (for all models)
Replace with correct rating and specification only.
Connect the PSE to the mains supply via a readily
accessible, disconnect device (Isolation Switch) and
suitable earth fault protection incorporated in the building
installation wiring.
FUSE
Brown
Grn/Yel
LIVE
EARTH
NEUTRAL
PSU Internal Mains
Wiring
Blue
Field Connections
AC Mains terminations
–
Mxp-049
The Mains cable should be a minimum cable size
of 0.5mm² for the 1.5A PSE & 0.75mm² for the
3.0A/5.0A PSE rated at 250V and fused via a 5A
anti-surge fuse. Maximum cable size is limited to
4mm².
Keep all mains wiring separate from the Extra Low
Voltage (ELV) battery cables and power supply
output cables.
3.2.1.1 Cable Gland
The cable gland and any cord clamp bushings used in routing the Mains cable
through the 20mm knockout must have a minimum flame-retardant rating of 94HB.
Suggested glands and bushings are: -
Type
Gland IP65
– Brass M20, EExd / Eexe
Gland IP68
– Nylon 66 M20 Black, UL94V2
Bushing
– Nylon 66 M20 Black, UL94V2
Manufacturer
Lappcable
Multicomp
Multipcomp
Must be
earthed