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GEH-6385 Reference and Troubleshooting, 2300 V Drives Chapter 3 Paramters/Functions
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3-65
Transformer Overtemperature Detection
Those Innovation Series products that are part of a system containing a transformer
provide the capability to detect transformer overtemperature condition. The Xfrmr
over temp trip fault and the Xfrmr temp hot alarm trigger on a signal that is a digital
input from the transformer overtemperature fault circuit. Either the fault or alarm
occurs when the transformer overtemperature circuit is open.
Function inputs
The following table specifies the input parameters of the Transformer
Overtemperature Detection function.
Parameter Description
Xfrmr OT fault sel
Selects the source of the transformer overtemperature
circuit.
Function configuration
The following table specifies the configuration parameters of the Transformer
Overtemperature Detection function.
Parameter Description
Xfrmr OT fault mode
Specifies whether the overtemperature condition triggers
a fault or an alarm.
Faults and alarms
The following table specifies the faults and alarms that the Transformer
Overtemperature Detection function declares.
Fault/Alarm Description
Xfrmr over temp Occurs when the state of the transformer
overtemperature circuit is False, indicating that the circuit
is open, and parameter Xfrmr OT fault mode is set to Trip
flt.
Xfrmr temp hot
Occurs when the state of the transformer
overtemperature circuit is False, indicating that the circuit
is open, and parameter Xfrmr OT fault mode is set to
Alarm fault.
Function description
The parameter Xfrmr OT fault sel generally selects digital inputs (Digital input 1, …,
Digital input 6). The Transformer Overtemperature Detection may be disabled by
setting Xfrmr OT fault sel equal to Unused.