ABB RELION REX640 Technical Manual page 1332

Protection and control

Hide thumbs Also See for RELION REX640:

Table of Contents

Supervision functions

Analog channel configuration

SEQSPVC has two analog group inputs which all must be properly configured.

Table 1273: Analog inputs

There are a few special conditions which must be noted with the configuration.

Table 1274: Special conditions

U3P connected to real measurements

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

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

The operation of SEQSPVC can be described with a module diagram. All the

modules in the diagram are explained in the next sections.

See the preprocessing function blocks in this document for the possible

signal sources.

Three-phase currents

Three-phase voltages

The function can work with any two voltage

channels connected but it is recommended

to connect all three voltage channels.

Operation setting. The

1MRS759142 F

Technical Manual