Page 124 - Sace Emax 2 Manual for design engineers

ABB | SACE Emax 2
Counters - introduction The main counters of the function are available in the Measurements – Network Analyzer menu, distributed
among several sections (page 45).
The extended list of all the measurements is available via Ekip Connect or by connecting to the bus system

NOTE: the Additional List item in the following paragraphs contains the additional counters
that are only present via Ekip Connect; the type of reference counter is given in the
heading of the additional tables

V Sequences and V 3s Submenus V Sequences and V 3s Sequences have the following counters:
Sequences
Menu Parameter Description
V seq pos Positive sequence of period in progress [V]
V seq neg Negative sequence of period in progress [V]
V Sequences
Last V pos seq Positive sequence of period preceding the one in progress [V]
Last V neg seq Negative sequence of period preceding the one in progress [V]
V seq pos Positive sequence calculated during the last three seconds [V]
V 3s Sequence V seq neg Negative sequence calculated during the last three seconds [V]
Unbalance Voltage unbalance calculated during the last three seconds [%]

Additional List
Counters (Sequences) Description
Last time stamp Date and time of last recording of the sequences
Counters (Sequences) Description
Last value Voltage unbalance relating to the period in progress [%]
Voltage unbalance relating to the period preceding the one in progress
Actual unbalance value
[%]
Last time stamp Date and time of last recording of the unbalances
Counts the number of times that the average value of the ratio
between the positive on negative sequence (with direction of rotation
Actual number of U.
3-2-1) and negative on positive sequence (1-2-3) exceeds the
Unbalance V Th threshold; the count refers to the actual day
Actual [day -1 ... day -7] Counters relating to the number of unbalances detected in the last
number of U. seven days of activity, calculated using the internal clock of the unit
Cumulative counter of all the unbalances detected by the unit (sum of
Cumulative number of U.
the other counters or to be increased also for the previous days?)

NOTE: all measurements of unbalances (Not balanced and Unbalance value) saturate at
200%

THD Current and THD Voltages The THD Current and THD Voltages submenus have the following counters:
Menu Counters Description
THD Current L1, L2, L3, Ne Instantaneous harmonic distortion value of each current phase
THD Voltages U12, U23, U31 Instantaneous harmonic distortion value of each line-to-line voltage

122 | © 2020 ABB | 1SDH001330R1002 - ECN000134959 - Rev. A Ekip Touch - Measurements | 5 - Network Analyzer