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Specification are subject to change without notice. Copyright 2005 Eaton Power Quality Pty Ltd 

Technical Specification –SPD120i/A 

Tvss Doc# 510077 

Page 1 of 2 

 

Web: 

http://www.powerware.com.au

 Phone: 1300 UPS UPS

 

SPD120i/A S

URGE 

D

IVERTER

 

(Single mode, 220-277V (380-480V), 100kA) 

INSTALLATION INSTRUCTIONS 

FEATURES 

• 

1 mode protection (L-N or L-E) 

• 

Compact solution for primary protection 

• 

DIN43880 case, 35 mm DIN-rail mountable 

• 

All MOVs thermally protected 

• 

Includes dry-contact alarm

 

Applications 

• 

Mains point-of-entry /Main SWB 

• 

Telecommunication Systems / Rectifiers 

• 

Process and Control Systems / Factories & Units 

• 

Computer Systems / Medical Systems 

• 

All sensitive Electronic Equipment

 

FUNCTIONAL DESCRIPTION  

The SPD120i is designed to protect single and 3-
phase power systems against damage from surges 
and spikes caused by lightning and other electrical 
sources. The unit is intended for point-of-entry or 
main-board protection and is connected in parallel 
with the power system via HRC fuses. This unit is 
available in various models for different voltages and 
applications. Check that the model you have 
purchased is rated correctly for your power system. 

This model (SPD120i/A) is designed for single 
and 3-phase power systems, with a grounded 
neutral, 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 a suitable model to 
suit your application. 

 
OPERATION 

Two lamps on the front panel indicate the operation 
status of the unit. The ‘OK’ lamp indicates that power 
is applied to the unit and the ‘FAULT’ lamp indicates 
reduced protection. If the ‘FAULT’ lamp is lit it is likely 
that the unit is damaged and must be replaced. If the 
breaker/fuse is intact and power is definitely being 
supplied through the unit (check with meter) but the 
‘OK’ lamp doesn’t light then the unit is faulty and 
must be replaced.

  

 

WARRANTY

  

Eaton Power Quality warrants this unit against faulty 
parts and workmanship for a period of 12 months 
from the date of purchase. If this product fails to 
operate correctly, please contact your Eaton 
representative. This warranty doesn’t cover neglect 
or intentional misuse. As this product is intended for 
use in electrically harsh environments no claim is 
made of suitability for purpose. This unit is designed 
to reduce the likelihood of damage, not prevent it. 
Please also note that an excessive surge, such as 
from a direct lightning strike to the site or a power 
system fault, may cause damage to the unit and 
render it inoperable. A unit that has been damaged in 
this way is not warrantable. 

 

 

 
 

For installation details,  

see over page. 

SPECIFICATIONS

 

Manufacturers name and model 

Eaton Powerware 
SPD120i/A 

Method of mounting 

Fixed. DIN Rail mount 

Input voltage 

220-277VAC (380-480V) 
40-70Hz 

Maximum continuous operating 
voltage - MCOV 

320VAC 

Temporary over-voltage – TOV 

350VAC, 15 mins 

Service type 

TN-C and TN C-S (3-phase 
with grounded neutral) 

Test classification  

Class II 

Supply current 

50mA 

Initial clamp voltage 

560V 

Maximum rated surge current - 
Ismax 8/20us  

100kA 

Nominal surge current - In 
8/20us 

50kA 

Residual voltage (Vpl) @  
3kA, 8/20uS 

1.0kV 

Residual voltage (Vpl) @  
40kA, 8/20uS 

1.65kV 

Residual voltage (Vpl) @ Ismax 
100kA, 8/20uS 

2.5KV 

Energy absorbtion (2ms) 

2130j 

Nominal surge lifetime (In) 

50kA (8/20uS), 20 times 

Internal protection (fusing) 

MOV thermal fuses 135

°

External disconnector 
requirements 

Gg/Gl HRC fuses, 1 per 
phase, 125A maximum.

 

Terminations 

Power terminals 16mm

2

 , 

Alarm terminals 1.5mm

2

 

Alarms/indicators 

5 indicators, dry contact 
alarm relay  – 
250VAC/32VDC, 5A 

Location Category 

Indoor 

Enclosure rating 

IP20 

Applicable standards. 

IEC61643-1, IEC610006, 
ANSI/IEEE C62.41, 
AS1768-2003, AS3100  

Dimensions 

DIN43880, 4 units (70mm) 

Weight 

200g 

Environment 

-10 to 60C, 0-90%RH 

Warranty 

12 months, workmanship 
and materials 

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