ABB SYMAP Digital Protection Relays Event history

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.

Event history

SYMAP® automatically collects and stores all activated events with their

number, title, appearing and disappearing status and a time stamp. A

maximum of 5.000 events can be stored. In case of overflow, overwriting

follows the FIFO principle. The event history can be transferred to a PC

and evaluated by a PC tool. Regardless of power supply, the data store is permanent.

Data recorder (optional)

The data recorder can log analog inputs, digital inputs, and digital out

puts. The recorder has the following settings:

•  number of samples (6-72)

•  recording period (5-60 sec)

•  pre-trigger (0-100%)

•  trigger event (start for recorder)

•  trigger event (stop for recorder)

The recording period depends on the number of samples. The recorder

can be set with the pre-trigger to record event data even before the

event happens.

Stopping the recorder can be triggered by either an event or a preset

time. For easier management and trouble-shooting, event data can be

transferred and analyzed. The data transfer is made by a link through a

plug on the front panel of the SYMAP® device.

Diagnostics and monitoring

SYMAP® provides various diagnostic and monitoring functions:

•  all memories (ROMs, RAMs, EEPROMs)

•  all analog reference voltages

•  automated test sequences

•  control power ON/OFF

•  binary input and output for control logic

The following supervising systems are offered by SYMAP®:

•  self-diagnostics

•  inputs of analog data (auxiliary circuit)

•  status and position of switching device and motor’s on-off status

•  supervising supply of trip coil

•  gas pressure

• temperature inside panel

•  each operating life of breaker (hours)