ABB XT7, Руководство по эксплуатации и обслуживанию

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ABB | SACE Tmax XT
Ekip Touch - Measurements | 5 - Network Analyzer 121 | © 2020 ABB | 1SDH001821A1002 - ECN000135670
Counters - introduction The main counters of the function are available in the Measurements – Network Analyzer menu, distributed
among several sections (page 36).
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
Sequences
Submenus V Sequences and V 3s Sequences have the following counters:
Menu Parameter Description
V Sequences
V seq pos Positive sequence of period in progress [V]
V seq neg Negative sequence of period in progress [V]
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 3s Sequence
V seq pos Positive sequence calculated during the last three seconds [V]
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 [%]
Actual unbalance value
Voltage unbalance relating to the period preceding the one in progress
[%]
Last time stamp Date and time of last recording of the unbalances
Actual number of U.
Counts the number of times that the average value of the ratio between
the positive on negative sequence (with direction of rotation 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]
number of U. Counters relating to the number of unbalances detected in the last
seven days of activity, calculated using the internal clock of the unit
Cumulative number of U.
Cumulative counter of all the unbalances detected by the unit (sum of
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