ABB XT7, Руководство по эксплуатации и обслуживанию

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ABB | SACE Tmax XT
External electronic accessories | 12 - Ekip Synchrocheck 177 | © 2020 ABB | 1SDH001821A1002 - ECN000135670
Continued from the previous page
Parameter Description Default
Secondary voltage
Secondary voltage of the transformer; the value is given as absolute value
(Volts) and can be set within the range: 100 V to 120 V in variable steps.
100 V
Concatenated Ref
Line-to-line voltage entering the module among the 3 installation voltages U12
Contact Type
Defines the rest status of the contact with synchronism not present
between: open (NO) and closed (NC)
NO
(1)
parameter not available with busbar active and Auto deadbar detect= Manual
(2)
with dead busbar and configuration: Reversed, the roles of the internal and external voltages are reversed
(3)
10% hysteresis is applied to the minimum voltage condition: once reached, the condition is lost if the
voltage drops below 90% of the set limit
(4)
parameter not available with dead busbar and Auto deadbar detect= Manual
NOTE:
all the thresholds have ±10% tolerance with the exception of:
• Voltage Delta; the tolerance is the higher value between: ±10% of the set threshold and 0.5%
Un (with Un > 220 V) or 1% Un (with Un
≤
220V)
• Frequency Delta; the tolerance is the higher value between ±10% of the set threshold and 0.02
Hz
Remote configurations
Additional parameters can be accessed via the service connector (via Ekip Connect) or via a system bus
communication:
Parameter Description Default
Frequency
check Activates (ON) or deactivates (OFF) frequency control for synchronism
assessment
ON
Phase check Activates (ON) or deactivates (OFF) phase control for synchronism assessment ON
Evaluate CB
status
Activates (YES) or deactivates (NO) circuit-breaker open status control for
synchronism assessment
NOTE : fourth synchronism condition with busbar active; second
synchronism condition with dead busbar
NO
Minimum
matching time
With active busbar, minimum time within which the Delta Phase condition must
be obtained
The value is given in seconds and can be set within the range: 100 ms to 3 s,
in 10 ms steps
NOTE : this is not a synchronism condition, but a parameter allowing a
discrimination to be made between correct and incorrect combinations of
the Delta Frequency and Delta Phase conditions. Owing to worst case
latencies, the time that effectively elapses before synchronism is
recognized may be longer than the set time (approx. 20 ms)
100 ms