Specifications are subject to change without notice. Copyright 2015 Eaton Industries, Mascot. NSW.
Technical Specification SPD150i
Doc# 5100SPD150i Rev1
Page 2 of 2
INSTALLATION
Refer to the following procedure to connect the
SPD150i.
1. CHECK
Always work safely-disconnect power before
making connections.
All wiring must be carried out by suitably
qualified personnel according to applicable
standards.
For installation adjacent to an M.E.N. link,
use the L-N mode. Insert insulated link as
shown.
For installation remote from the M.E.N. link,
use the L-E mode. Remove link. A separate
N-E protector may be required.
Always use correct size HRC fuses.
For services >125A use 125A HRC fuses.
For services <125A use 1 step below service
size. DO NOT USE AN MCB.
Always use Gg or Gl rated fuses. Do not use
delay types or semiconductor fuses.
2. INSTALL
Locate fuse position as close as possible to
the Main Switch.
Install fuse holders or fuse switch.
Locate suitable position for SPD ensuring
adequate space for cables. Do not install
above heat generating objects or any
position exposed to weather.
3. CONNECT
Connect wiring-refer to connection diagram
on this page. Always use bootlace wire
ferrules for lowest resistance to prevent
damage to wire.
Use suitably rated cable for power
connections. Cable should be rated for
operation at system voltage and be 4mm to
16mm sq.
Use shortest possible cables for all
connections or protection will be reduced.
For alarm cables use cable rated at system
voltage at between 0.5-1.5mm
2
.
3. NOTES
125A fuses are rated for maximum surge
rating.
Wiring from fuse to SPD carries surge
currents only. This means lower size cables
can be used than service size rating.
If using undersize cables we recommend
double insulating same.
It is recommended NOT to connect alarm
contacts to AC mains circuits if possible, to
prevent flashover from surges on AC line.
Connect to a BMS or PLC if possible.
Do not perform an insulation resistance test
on this unit as it contains voltage limiting
components which may be damaged during
testing.
3. EARTHING
The main earth wire (from earth link on
switchboard to ground rod or system ) MUST
be at least 6mm dia or larger.
Earth connections from the unit to neutral or
earth link MUST be as short as possible.
Failure to comply with the above points
can result in improper operation of the
unit and possible damage to the
installation.
L-N mode connections
L-E mode connections
