ABB REX 521 Technical Reference Manual, Standard Configurations page 16

REX 521
16
Protection Relay
Technical Reference Manual, Standard Configurations
Table 2.-4 Measurement functions available in the different standard
configurations of the REX 521
Function Description
f System frequency measurement
PQE Three-phase power and energy measurement
Table 2.-5 Condition monitoring functions available in the different standard
configurations of the REX 521
Function Description
CB wear Circuit breaker electric wear 1
TCS1 Trip-circuit supervision 1
MCS 3I Supervision function of the energizing current input circuit
MCS 3U Supervision function of the energizing voltage input circuit
Table 2.-6 Power quality monitoring function available in the different
standard configurations of the REX 521
Function Description
PQ 3Inf Current waveform distortion measurement
PQ 3Unf Voltage waveform distortion measurement
1MRS 751802-MUM