Analog Input Configuration - ABB RELION REX640 Technical Manual

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1MRS759142 C

Technical Manual

SRCPTOC contains a blocking functionality. It is possible to block function outputs,

timers or the function itself.

Analog input configuration

SRCPTOC has one analog group input which must be properly configured.

Analog inputs

See the preprocessing function blocks in this document for the

possible signal sources.

Improper analog channel configuration causes a validation error if the analog

channels are not completely configured or they do not match with certain settings. For

troubleshooting, check the contents of this chapter and also the preprocessing blocks

in this document. The configuration can be written to the protection relay once the

mismatch is corrected.

Operation principle

The function can be enabled and disabled with the Operation setting. The

corresponding parameter values are "On" and "Off".

The operation of SRCPTOC can be described by using a module diagram. All the

modules in the diagram are explained in the next sections.

GUID-02932E2B-FF44-463F-916C-9E8B0D997636 V1 EN

Functional module diagram

Resonance current calculation

This module calculates the resonance current per phase set as per setting Tuning

harmonic Num. The resonance current for phase A is calculated with the equation.

Three-phase currents

Protection functions

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