ABB SACE Tmax XT2 User Manual page 108

Counters - The main function counters are available in the Measurements - Network Analyzer menu (page
preface 29), distributed across several sections.
The extended list of all measurements is available via Ekip Connect or with system bus
connection.
The Sequence V and Sequence V 3s submenus have the following counters:
Sequence V and
Sequence V 3s
Menu
V sequence
V 3s
sequence
Supplemental list
Counters (Sequences)
Last time stamp
Counters (Unbalance)
Last value
Actual unbalance value
Last time stamp
Actual number of U.
Actual [day -1 ... day -7]
number of U.
Cumulative number of
U.
The THD Current and THD Voltages sub-menus have the following counters:
THD Current and
THD Voltages
Menu
THD Current
THD Voltage
1SDH002031A1002 ECN000092998
NOTE: in the following paragraphs, the Supplemental List item shows the additional
counters present only via Ekip Connect. The counter type of reference is shown in the
header of the supplementary tables
Counters Description
V seq pos Positive sequence relative to the current period [V]
V seq neg Negative sequence relative to the current period [V]
Last V pos Positive sequence relative to the previous period [V]
Last V neg Negative sequence relative to the previous period [V]
V seq pos Positive sequence calculated in the last three seconds [V]
V seq neg Negative sequence calculated in the last three seconds [V]
Unbalanced Voltage imbalance calculated in the last three seconds [%]
Description
Date and time referred to the last record of the sequences
Description
Voltage imbalance related to the current period [%]
Voltage imbalance related to the previous period [%]
Date and time referred to the last record of imbalances
Counts the times when the mean value of the ratio of positive to negative
sequences (with the sense of rotation 3-2-1) and negative to positive
sequences (1-2-3) exceeds the threshold Unbalance V Th. The count refers
to the current day.
Counters referred to the number of imbalances detected in the last seven
days of activity, calculated using the unit's internal clock
Cumulative counter of all imbalances detected by the unit (sum of the other
counters or also added to the previous days?)
NOTE: all imbalance measurements (not balanced and Unbalance value) saturate
when it reaches 200%
Counters
L1, L2, L3, Ne
U12, U23, U31
Rev. B
Description
Real-time value of the harmonic distortion of each current phase
Real-time value of the harmonic distortion of each line-to-line
voltage
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