ABB DSDO115A 3BSE018298R1 Digital Output Board

All connections to SYMAP® are made with terminal plugs on the back of

the device, allowing the device to be exchanged easily.

Analog input for measurement

SYMAP® provides inputs for analog sensors at the rear of the device. If

terminal plugs for the CTs are disconnected, the circuits will be linked

automatically so there is no disconnection in the CT circuit loops.

A total of 17 analog inputs for current and voltage transformers are used

for protection functions. The following list shows possible connections

for current transformers (CT) and potential transformers (PT):

•  3 x CT inputs for feeder current

•  1 x CT input for ground current

•  3 x PT inputs for feeder voltage

•  3 x PT inputs for 1st bus bar voltage

•  3 x PT inputs for 2nd bus bar voltage

•  1 x PT input for ground voltage

Either way, easy programming is guaranteed

and on-site visits by the manufacturer’s engi

neers during commissioning is not required.

SYMAP® provides four hotkeys placed under

neath the LCD to access four main groups of

values, namely »Meters«, »Alarm«, »Process«

and »Breaker Control«. The user can press the

hotkeys to scroll through pages of information.

The hotkey »Meters« provides detailed infor

mation on electric measurement values,

counters for active and reactive power and working hours.