Hardware modules

Power supply module (PSM)

The power supply module is used to provide the correct internal voltages and full isolation between the terminal and the battery system. 

An internal fail alarm output is available.

Binary input module (BIM)

The binary input module has 16 optically isolated inputs and is available in two versions, 

one standard and one with enhanced pulse counting capabilities on the inputs to be used with the pulse counter function. 

The binary inputs are freely programmable and can be used for the input of logical signals to any of the functions.

They can also be included in the disturbance recording and event-recording functions. 

This enables extensive monitoring and evaluation of operation of the IED and for all associated electrical circuits.

Binary output modules (BOM)

The binary output module has 24 independent output relays and is used for trip output or any signal ling purpose.

Binary input/output module (IOM)

The binary input/output module is used when only a few input and output channels are needed. 

The ten standard output channels are used for trip output or any signalling purpose. 

The two high speed signal output channels are used for applications where short operating time is essential. 

Eight optically isolated binary inputs cater for required binary input information.

mA input module (MIM)

The milli-ampere input module is used to interface transducer signals in the –20 to +20 mA range

from for example OLTC position, temperature or pressure transducers.

The module has six independent, galvanically separated channels.