ABB RELION REX640 Technical Manual page 1405

Protection and control

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Table of Contents

1MRS759142 F

Analog channel configuration

DGMGAPC has two analog group inputs which must be properly configured.

Table 1341: Analog inputs

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

Table 1342: Special conditions

U3P connected real meas-

Improper analog channel configuration causes a validation error if the analog

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

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 is enabled and respectively "off" means function is disabled.

The operation of DGMGAPC can be described by using a module diagram (see

Technical Manual

See the preprocessing function blocks in this document for the possible

signal sources.

Operation setting is used to enable or disable the function. When selected "on"

). All the modules in the diagram are explained in the next sections.

Three-phase currents

Three-phase voltages

The function can work with any two voltage channels connec-

ted but it is recommended to connect all three voltage chan-

Condition monitoring functions