GE IS200ICIAH1A motor protector

Description

GE General Electric Technical Specifications: IS200ICIAH1A

As a safeguard, the PHASE CT PRIMARY and Generator Parameters setpoints are defaulted to “——–” (indicating not pro

grammed) when shipped from the factory. The IS200ICIAH1A will indicate that it was never programmed. Once these values are

entered, the IS200ICIAH1A will be in service. The phase CT should be selected such that the maximum fault current does not exceed

20 times the primary rating. When relaying class CTs are purchased, this precaution will help prevent CT saturation under

fault conditions. The secondary value of 1 or 5 A must be specified when ordering so the proper hardware will be installed.

The

PHASE CT PRIMARY setpoint applies to both the neutral end CTs as well as the output CTs.

For high resistance grounded systems, sensitive ground current detection is possible if the 50:0.025 ground CT is used. To

use the 50:0.025 ground CT input, select 50:0.025 for the GROUND CT setpoint. No additional ground CT messages will

appear. On solid or low resistance grounded systems, where fault currents may be quite large, the 489 1 A/5 A secondary

ground CT input should be used. The Ground CT primary should be selected such that potential fault current does not

exceed 20 times the primary rating. When relaying class CTs are purchased, this precaution will ensure that the Ground CT

does not saturate under fault conditions.

The 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 IS200ICIAH1A 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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The maximum number of 8-Channel Analog Current/Voltage Output modules that can be installed

in a system are:

4 in a system using CPU Models 311, 313, or 323

8 in a system using CPU Model 331

32 in a system using CPU Models 340 and 341

64 in a system using CPU Models 350 – 364

Other Configuration Considerations

When planning the module configuration for your application you must also consider the load

capacity of the installed power supply and the total load requirements of all modules that are

installed in the baseplate.

Refer to Chapter 1 in this manual for details on power supply, baseplate, and module load

requirements. The following table lists the specifications for this module. Note that test conditions,

unless otherwise noted, are: VUSER = 24 VDC at an ambient temperature of 25 C (77 F)

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