SPD3Ni/A SURGE DIVERTER FUNCTIONAL DESCRIPTION

(3 Phase, 380-440V, 50kA per mode) The SPD3i is designed to protect 3-phase power
systems against damage from surges and spikes
INSTALLATION INSTRUCTIONS caused by lightning and other electrical sources. The
FEATURES unit is intended for point-of-entry or sub-board
• 2 mode protection (L-N, N-E) protection and is connected in parallel with the power
• Compact solution for 3-phase protection system via HRC fuses. This unit is available in
• DIN43880 case, 35 mm DIN-rail mountable various models for different voltages and
• All MOVs thermally protected applications. Check that the model you have
• Includes dry-contact alarm purchased is rated correctly for your power system.
Applications .
• Secondary power circuits / Sub-boards
This model (SPD3Ni/A) is designed for TN-C and
• Telecommunication Systems / Rectifiers TN C-S power systems in the range of 220-
• Process and Control Systems / Homes & Units 277V(380-440V). If your power system is TN-S, TT
• Computer Systems / Medical Systems or IT, or of a different voltage, this model is NOT
• All sensitive Electronic Equipment suitable.

Please contact your supplier for a suitable model to

suit your application.
SPECIFICATIONS
Manufacturers name and model Eaton Powerware
OPERATION
SPD3Ni/A Two lamps on the front panel indicate the operation
Method of mounting Fixed. DIN Rail mount status of the unit. The ‘OK’ lamp indicates that power
Input voltage 220-277VAC (380-440V) is applied to the unit and the ‘FAULT’ lamp indicates
40-70Hz reduced protection. If the ‘FAULT’ lamp is lit it is likely
Maximum continuous operating
voltage - MCOV
320VAC that the unit is damaged and must be replaced. If the
Temporary over-voltage – TOV 350VAC, 15 mins breaker/fuse is intact and power is definitely being
Service type TN-C and TN C-S (3-wire supplied through the unit (check with meter) but the
with grounded neutral) ‘OK’ lamp doesn’t light then the unit is faulty and
Test classification Class II
must be replaced.
Supply current 50mA
Initial clamp voltage 560V
Maximum rated surge current - 50kA L-N, 50kA N-E
Ismax 8/20us WARRANTY
Nominal surge current - In 20kA L-N, 20kA N-E Eaton Power Quality warrants this unit against faulty
8/20us
Residual voltage (Vpl) @ ≤1.2kV L-N, 900V N-E
parts and workmanship for a period of 12 months
3kA, 8/20uS from the date of purchase. If this product fails to
Residual voltage (Vpl) @ Ismax ≤2.1kV L-N, 1.6kV N-E operate correctly, please contact your Eaton
40kA, 8/20uS representative. This warranty doesn’t cover neglect
Energy absorbtion (2ms) 2130j
Nominal surge lifetime (In) 20kA (8/20uS), 20 times
or intentional misuse. As this product is intended for
Internal protection (fusing) MOV thermal fuses 135°C use in electrically harsh environments no claim is
External disconnector Gg/Gl HRC fuses, 1 per made of suitability for purpose. This unit is designed
requirements phase, 125A maximum.
2
to reduce the likelihood of damage, not prevent it.
Terminations Power terminals 16mm , Please also note that an excessive surge, such as
2
Alarm terminals 1.5mm
Alarms/indicators 5 indicators, dry contact from a direct lightning strike to the site or a power
alarm relay – system fault, may cause damage to the unit and
250VAC/32VDC, 5A render it inoperable. A unit that has been damaged in
Location Category Indoor this way is not warrantable.
Enclosure rating IP20
Applicable standards. IEC61643-11, IEC610006,
ANSI/IEEE C62.41 CATA&B,
AS1768-2007 CATA&B,
UL1449ed3 type 4
Dimensions DIN43880, 4 units (70mm) For installation details,
Weight 200g
Environment -10 to 60C, 0-90%RH see over page.
Warranty 12 months, workmanship
and materials

Specification are subject to change without notice. Copyright 2005 Eaton Power Quality Pty Ltd
Technical Specification – SPD3Ni/A
Tvss Doc# 510073
Page 1 of 2
Web: http://www.powerware.com.au Phone: 1300 UPS UPS
INSTALLATION
EARTHING
Refer to the procedure and diagram shown to connect the
SPD3Ni/A. For proper operation, all surge diverters rely upon a good earth
connection. In some installations the existing earth system may
PROCEDURE: require upgrading. Important things to look for are:
• The main earth wire (from earth link on switchboard to ground
1. CHECK
rod or system) MUST be at least 6mm diameter (preferably
• Always work safely – disconnect power before making
connections. larger) and should be as short as possible.
• All wiring must be carried out by suitably qualified • Earth connections from the unit to earth link MUST be as short
personnel according to the applicable standards.
as possible.
• Check for correct operating voltage and power system.
Failure to consider the above points can result in improper
This model (SPD3Ni/A) is designed for TN-C and TN C-
operation of the unit and possible damage to the installation.
S power systems in the range of 220-277V(380-440V). If
your power system is TN-S, TT or IT, or of a different
voltage, this model is not suitable. Please contact
your supplier for a suitable model to suit your
application.
• 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 A 3-PHASE 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 SPD3, 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 diagram. 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
2 2
should be 4mm to 16mm .
• 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
2 2
should be 0.5mm to 1.5mm .
4. NOTES:
• 125A fuses are rated such for maximum surge rating.
On services below 150A, 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 WARNING – OBSERVE THE SUPPLY VOLTAGE LIMITATIONS
OF THIS UNIT. FAILURE TO OBSERVE THIS WARNING WILL
require double insulation (i.e. sleeving) of the cables.
RESULT IN DAMAGE TO THE UNIT. DAMAGE FROM
• Maximum alarm relay resistive load is 5A. EXCESSIVE SUPPLY VOLTAGE IS NOT WARRANTABLE.
• 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. If you experience any problems with the
• Do not Megger test cabling with unit connected – unit installation or commissioning, contact your
may be damaged. Eaton representative for guidance.

Specification are subject to change without notice. Copyright 2005 Eaton Power Quality Pty Ltd
Technical Specification – SPD3Ni/A
Tvss Doc# 510073
Page 2 of 2
Web: http://www.powerware.com.au Phone: 1300 UPS UPS