Month: January 2026

The AO845/AO845A Analog Output Module for single or redundant

applications has 8 unipolar analog output channels. The module

performs self-diagnostic cyclically. Module diagnostics include:

External Channel Error is reported (only reported on active

channels) if the process power supply that supply voltage to

output circuitry is too low, or the output current is less than the

output set value and the output set value > 1 mA (open circuit).

Internal Channel Error is reported if the output circuit can not

give the right current value. In a redundant pair the module will be

commanded to error state by the ModuleBus master.

Module Error is reported in case of Output Transistor Error, Short

Circuit, Checksum Error, Internal Power Supply Error, Status Link

Error, Watchdog or Wrong OSP behavior.

Features and benefits

• 8 channels of 4…20 mA

• For single or redundant applications

• 1 group of 8 channels isolated from ground

• Analog inputs are short circuit secured to ZP or +24 V

• HART pass-through communication

Application

The combined overcurrent and earth-faultrelay SPAJ 140 C is intended to be used forthe

selective short-circuit and earth-fault pro-tection of radial feeders in solidly earthed,

resistance earthed or impedance earthedpower systems.

The integrated protectionrelay includes an overcurrent unit and anearth-fault unit with flexible tripping and signalling facilities.

The overcurrent and earth-fault relays can also be used for other applica-tions requiring single-,

two-, or three-phase overcurrent protection.

The combined over.current and earth-fault relay includes a cir-cuit-breaker failure protection unit.

The combined overcurrent and earth-faultrelay SPAJ 140 C is pait of ABB’s Distribu-tion Automation concept,

which is a productsegment of Panorama, the complete ABBsolution for the control and management ofelectric power systems.

Features

Three-phase, low-set phase overcurrentunit with definite time or inverse definiteminimum time (lDMT)

characteristic

Three-phase, high-set phase overcurrentunit with instantaneous or defnite timeoperation

Low-set earth-fault unit with definite time o!inverse definite minimum time (lDMT) cha!acteristic

High-set earth-fault unit with instanta-neous or definite time operation

Built-in circuit-breaker failure protection

Two heavy-duty and four signal outputrelays

Output relay matrix allowing start or tripsignals from the protection stages to berouted to the desired

output relay

Local display of measured and set valuesand data recorded at the moment of a fault

Reading and writing of setting values either

via local display and front panel push-but-tons or from higher-level systems over theserial interface and

the fibre-optic bus

Self-supervision system continuously mon.itoring the operation of the electronics andthe microprocessor

Powerful software support for parameter-ization of the relay, for reading measuredand recorded values,

events, etc.. and forstoring readings

Member of the SPAcOM product family,ABB’s Distribution Automation system andABB’s Panorama

concept

CE marking according to the Ec directivefor EMC

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.

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.

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.

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.

Enduring protection

…technology…

The SPAJ 140 Series of Combined Overcurrent and Earth-fault Relays provides your mediumvoltage

network with an optimised composition of protection functions within one relay.

This compact package facilitates combined phase and neutral current relay functions for use

with selective short-circuit and time-overcurrent protection of distribution feeders.

It can also be applied to feeder earth-fault protection in solidly earthed,

resistance earthed and isolated neutral networks.

Completely

…field-proven…

As multi-function solutions, these relays can be flexibly adapted to different kinds of

incoming and outgoing feeders in varying substation environments.You can also use

the SPAJ 140 Series relays for protection of transformers, motors and generators, and as

back-up protection.

Reliable

…through the years…

With numerous years of service in different applications world-wide, the SPAJ 140 Series

Relays serve you with a proven track record of reliability.

The Panel 800 family comprises of user-friendly,

intuitive and ergonomic operator panels that combine slim,

space-saving dimensions with a comprehensive range of advanced functions.

Designed to make process automation easy,

all panels are equipped with advanced functionality for

process and equipment control, maneuvered by just touching the LCD display.

Panel 800 Version 6 is a user-friendly, intuitive and ergonomic

operator panel that combines slim, space saving dimensions

with a comprehensive range of advanced functions.

It is equipped with advanced functionalities for

process and equipment control accessible via touch-screen symbols.