INSTALLATION | Installation of SPLC models
Doc #OI0003 Part #004122 Rev 04 2010
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DC Wiring
The SP PRO contains a 250 A DC circuit breaker and a low current Battery Sense/Pre charge DC switch. It
may be necessary to fit additional fusing or circuit breakers to protect the battery system. Any additional
fuse or circuit breaker must be located in a user accessible position and be in close proximity to the battery
system. The battery system is hazardous and must not be accessible by the user.
DC wiring should be fed through the appropriate gland and terminated to the correct terminals.
Battery B+ and B- connections. Connect the battery negative lead using M8 copper lug to the SP PROs B-
terminal. Tighten the hex screw including load washer with the 6mm Allen key such that load washer flattens.
Repeat the same process with the positive battery lead. The terminal labelled “NC” provides no internal
connection.
Battery Sense/Pre charge B+ and B- and optional MID connections. These connections can be made with
light duty cable (2.5 mm
2
) - cable MUST be double insulated. Connect the battery negative lead with the
insulation stripped back 12 mm to the SP PROs Pre charge negative screw terminal. Repeat the same
process with the positive battery lead and optional mid point lead.
Copper wiring must be used through out.
Multiple Hazardous Energy and Voltage Sources - 120 V Battery
DC wiring is fed from multiple sources including internal capacitors. Care must be taken to
ensure that under no circumstances can the user access or touch wiring even after the operation
of external circuit breakers or fuses assemblies.
AC Wiring
The AC cabling should be sized according to maximum demand through (consumed by the AC Load) and
consumed by the SP PRO (consumed by the charging of batteries). The SP PRO is fitted with terminals which
are suitable for accepting up to 50 mm
2
cables. The fitted 125 A circuit breakers will protect 35 mm
2
cables
but additional external protection must be provided if a lighter duty cable is used.
AC wiring should be fed through the appropriate gland and terminated to the SP PRO.
Connect the AC load wiring to the SP PRO: earth to the load earth terminal (strip length 18 mm), neutral to the
load neutral terminal (strip length 18 mm), and active to the Load Circuit Breaker (strip length 15 mm).
Connect the AC source wiring to the SP PRO.
Copper wiring must be used though out.
Multiple Hazardous Energy and Voltage Sources
AC wiring is fed from multiple sources. Care must be taken to ensure that under no
circumstances can the user access or touch wiring even after the operation of external circuit
breakers.
Earth Wiring
The inverter shall be earthed to the installations Earth system. A minimum copper earthing conductor of
16 mm
2
. For further information see AS3000 Table 5.1 – Earthing conductor size.
Earth the inverter by connecting earth wiring from the switchboard to the inverter Earth terminal. The SP PRO is
suitable for Multiple Earth Neutral (MEN) systems.
Copper wiring must be used through out.
