ABB RELION REX640, Техническое руководство, Страница: 1471 / 1960

8.1.11.2 Function block
Figure 813: Function block
8.1.11.3 Functionality
The sequence current measurement function CSMSQI provides limit
value supervision outputs (
I2_HIGH_AL, I2_HIGH_WARN, I1_HIGH_AL,
I1_HIGH_WARN, I1_LOW_WRN, I1_LOW_AL, I0_HIGH_AL, I0_HIGH_WARN
).
Setting parameters
Ps Seq A on delay time, Ps Seq A off delay time, Ng Seq A
on delay time, Ng Seq A off delay time, Zro Seq A on delay time, Zro Seq A off
delay time are used for controlling the activation and the deactivation of alarm and
warning outputs.
Instantaneous sequence currents in amperes are available for application
configurations through outputs
I2_INST, I1_INST
and
I0_INST
.
8.1.11.4 Analog channel configuration
CSMSQI has one analog group input which must be properly configured.
Table 1414: Analog inputs
Input Description
I3P Three-phase currents
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.
8.1.11.5 Signals
1MRS759142 F Measurement functions
REX640
Technical Manual
1471