ABB SPAJ 140 C Series A world-class relay collection for optimised protection functions

A world-class relay collection for optimised protection functions

The SPAJ 140 C Series relays serve your network with reliable and versatile technical features:

- The SPAJ 140 C relay comprises a reliable basic relay solution for non-directional overcurrent and

earth-fault protection.

- The SPAJ 141 C relay includes a very sensitive earth-fault input circuit.

- The SPAJ 142 C is a version of SPAJ 140 C with more sensitive earth-fault protection.

- The SPAJ 144 C is the newest member of SPAJ 140 C Series with enhanced protection functionality

and even more protective stages.

The external control input in SPAJ 140 C Series relays enables you to build busbar protection and other

special applications based on blocked overcurrent relays.

The legendary SP ACOM family: More than 300,000 relays in use world-wide

The SPAJ 140 Series relays belong to the SPACOM product family –

already a legend in its field. These products were the first in the worldin intro ducing a substation automation

concept based on a genuine communicating microprocessorcontrolled relay solution.

Today, these products still keep pace with the same enduring protection power.

SPAJ 140 C Series Technology summary Integrated solution

Three-phase overcurrent unit and sensitive non-directional earth-fault unit with flexible

tripping and signalling facilities and an integrated circuit-breaker failure protection.

Standard or specific

Four standard inverse definite minimum time (IDMT) time-current curves as per

IEC and BS. Two specific inverse-time characteristics called RI and RXIDG.

Recorded memory for measured fault parameters.

Local and/or remote access to parameters, fault register, events and diagnostic data through local

man-machine interface or remote serial port.

Two or three operation stages in each protection relay module.

Freely configurable output relays for tripping and signalling.

Direct numerical readout display for a full set of measured and recorded values,

indications and status information.

Data communication capabilities

Serial interface to connect the relay with the data collection, recording and analysis functions

of local or remote monitoring and control systems or other host.

High Immunity to electrical and electromagnetic interface.

Also for off-shore applications IP54 class water- and dustproof aluminium

case endures mechanical stress.

All in one No external auxiliary relays for tripping are needed.

Wide auxiliary voltage ranges 18-80 V DC and 80-265 V AC/DC

Improved reliability and availability supported by built-in self-supervision

system with auto-diagnosis.

Long life-time MTBF higher than 200 years based on delivery and fault statistics.

CE marking according to the EC directive for EMC.