ABB TB850 3BSC950193R1 CEX-Bus Terminator

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

Communication interfaces

SYMAP® provides communication ports available with the following

interfaces and protocols:

•  1 x RS 232 on the front panel for programming and data output

•  1 x RS 422/485 port

• 1 x PROFIBUS DP (RS485 or fiber optic port)

•  MODBUS RTU

•  MODBUS TCP (RJ45 or fiber optic port)

•  IEC 60870-5-103 (RS485 or fiber optic port)

•  IEC 61850 (RJ45 or fiber optic port)

•  CANBUS 1 (communication between devices as power management

system, breaker control interlocking)

•  CANBUS 2 (engine control interface: MTU, VOLVO, DEUTZ etc.)

Detailed protection function history

SYMAP® automatically collects and stores all activated events related to

protection functions with a time stamp. A maximum of 1.000 protection

function events can be stored. In case of overflow, overwriting follows

the FIFO principle.

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