GE IS200ICIAH1AAB board

Description

GE General Electric Technical Specifications: IS200ICIAH1AAB

The active group can be selected using the ACTIVATE SETPOINT GROUP setpoint or the assigned digital input (shorting that

input will activate the alternate set of IS200ICIAH1AAB protection setpoints, Group 2). In the event of a conflict between the ACTIVATE SET

POINT GROUP setpoint or the assigned digital input, Group 2 will be activated. The LED indicator on the faceplate of the 489

will indicate when the alternate setpoints are active in the protection scheme. Changing the active setpoint group will be

logged as an event. Independently, the setpoints IS200ICIAH1AAB in either group can be viewed and/or edited using the EDIT SETPOINT

GROUP setpoint. Headers for each setpoint message subgroup that has dual settings will be denoted by a superscript num

ber indicating which setpoint group is being viewed or edited. Also, when a setpoint that has dual settings is stored, the

flash message that appears will indicate which setpoint group setting has been changed.

The IS200ICIAH1AAB seven General Input functions are flexible enough to meet most of the desired digital input requirements. The asserted

state and the name of the digital inputs are programmable. To disable the input functions when the generator is offline, until

some time after the generator is brought online, a block time should be set. The input functions will be enabled once the

block delay has expired. A value of zero for the block time indicates that the input functions are always enabled.

Inputs may be configured for control, alarm, or trip. If the control feature is enabled, the assigned output relay(s) operate

when the input is asserted. If the PULSED CONTROL RELAY DWELL TIME is set to 0, the output relay(s) operate only while the

input is asserted. However, if a dwell time is assigned, the output relay(s) operate as soon as the input is asserted for a

period of time specified by the setpoint. If an alarm or trip is enabled and the input is asserted, an alarm or trip will occur

after the specified delay

Once the IS200ICIAH1AAB is in service, it may be tested from time to time as part of a regular maintenance schedule. The unit will have

accumulated statistical information relating historically to generator and breaker operation. This information includes: last

trip data, peak demand data, MWh and Mvarh metering, parameter averages, RTD maximums, analog input minimums and

maximums, number of trips, number of trips by type, number of breaker operations, the number of thermal resets, total gen

erator running hours, and the event record. When the unit is under test and one of the inputs is assigned to the Test Input

function, shorting that input will prevent all of this data from being corrupted or updated.

If an input is assigned to the tachometer function, it may not be used here.

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