Specification are subject to change without notice. Copyright 2005 Eaton Power Quality Pty Ltd
Technical Specification –SPD120i/A
Tvss Doc# 510077
Page 2 of 2
Web:
http://www.powerware.com.au
Phone: 1300 UPS UPS
INSTALLATION
Refer to the procedure and diagram shown to connect the
SPD120i/A.
PROCEDURE:
1. CHECK
•
Always work safely – disconnect power before making
connections.
•
All wiring must be carried out by suitably qualified
personnel according to the applicable standards.
•
Check for correct operating voltage and power system.
This model (SPD120i/A) is designed for power systems
in the range of 220-277V(380-480V).
If your power
system is “delta” (i.e. ungrounded), or of a different
voltage, this model is not suitable
. Please contact
your supplier.
•
** For installation adjacent to an M.E.N. link, use the L-N
mode. Insert insulated link as shown.
•
** For installations remote from the M.E.N., use the L-E
mode. Remove link. A separate N-E protector is required
Contact your distributor for information.
•
Always use the correct size HRC fuses.
•
For services >125A, use 125A fuses. For services
<125A, use one step below service fuses (i.e. 80A
service =63A fuses). DO NOT USE AN MCB.
•
Always use Gg or Gl-rated fuses. Do not use delay types
or ‘semiconductor’ fuses.
•
Consider fitting a fuse-switch or a separate isolation
switch to facilitate safe maintenance in the future.
2. INSTALL
•
Locate a fuse position as close as possible to the Main
Switch.
•
Install fuseholders or fuse-switch.
•
Locate a suitable position for the SPD, ensuring
adequate space for cables. Do not install above heat-
generating objects or in any position that is exposed to
weather.
•
Install unit to DIN-rail in switchboard or cabinet.
3. CONNECT
•
Connect wiring - refer to connection diagrams. If using
stranded cable, always use wire ferrules for lowest
resistance and to prevent damage to the wire.
•
Use a suitably-rated cable for power connections. Cable
should be rated for operation at the system voltage and
should be 4mm
2
to 16mm
2
.
•
Use short cables for phase, neutral and earth
connections or protection will be reduced.
•
Use a suitably-rated cable for alarm connections. Cable
should be rated for operation at the system voltage and
should be 0.5mm
2
to 1.5mm
2
.
4. NOTES:
•
125A fuses are rated such for maximum surge rating.
On services below125A, use the correspondingly lower
sized fuse (i.e.80A service = 63A fuse).
•
Wiring from fuse to SPD is carrying surge currents only,
not load current. This means that smaller cables may be
used than is normal for the current rating.
•
If using under-sized cables, some energy authorities
require double insulation (i.e. sleeving) of the cables.
•
Maximum alarm relay resistive load is 5A.
•
It is recommended not to connect the alarm contacts to
AC mains circuits if possible, to prevent flashover from
surges on the AC line. Connect to a PLC or BMS if
available.
•
Do not Megger test cabling with unit connected – unit
may be damaged.
EARTHING
For proper operation, all surge diverters rely upon a good earth
connection:
•
The main earth wire (from earth link on switchboard to ground
rod or system) MUST be at least 6mm diameter (preferably
larger) and should be as short as possible.
•
Earth connections from the unit to neutral or earth link MUST
be as short as possible.
Failure to consider the above points can result in improper
operation of the unit and possible damage to the installation.
L-E mode
connections:
L-N mode
connections:
