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2.3 Wiring Installation
2.3.1
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 fuse is rated as follows:
T 3.15A H 250V
Replace with correct rating and specification only.
FUSE
Brown
Grn/Yel
LIVE
EARTH
NEUTRAL
PSU Internal Mains
Wiring
Blue
Field Connections
AC Mains terminations
Connect the ExGo to the mains supply via a
readily accessible, disconnect device
(Isolation Switch) and suitable earth fault
protection incorporated in the building
installation wiring.
The Mains cable should be a minimum cable
size of 0.75mm² 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.
2.3.1.1 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
2.3.2
Battery Wiring
The system is designed to charge 24V
batteries or two 12V batteries connected in
series. Refer to diagram opposite.
Use the short black connection link to
connect the batteries.
Use the Red & Black leads provided to
connect the batteries to the
BAT+ & BAT
–
terminals on the PSE module.
Mount the batteries on the bottom of the
enclosure.
+V DC POWER
0V DC POWER
B
BATTERY
–
OBSERVE POLARITY OF CONNECTIONS!
Must be
earthed
