ABB | SACE Emax 2
Electronic accessories | 3 - Ekip Synchrocheck module
171 | © 2013
ABB |
1SDH001000R0002 - L7804
3 - Ekip Synchrocheck module
Description
The Ekip Synchrocheck is an accessory module that, combined with the Ekip Measuring or
Ekip Measuring Pro module serves to recognize whether the synchronism conditions exist
between the internal and external contacts of the circuit-breaker, necessary for closing the
circuit-breaker.
The Ekip Synchrocheck module measures the voltage on the external contacts (external
voltage), while the Ekip Measuring or the Ekip Measuring Pro module measures that on the
internal contacts (internal voltage). With a generator, and the circuit-breaker in "Standard"
configuration, the external voltage is the line voltage, and the internal voltage is that of the
generator.
There are two types of operation:
• With the Bar live, if the external voltage is different to zero.
• With the Bar dead, if one of the voltages is null (external with "Standard" configuration,
internal with "Reversed" configuration).
With Bar live:
• The search for the synchronism is started if the external voltage is greater than or equal
to a minimum (0.5 Un by default), for a minimum time (1 s by default).
• Synchronism is considered to be reached if the differences between the RMS values of
the frequency and the voltage phases are less than or equal to a maximum (0.12 Un, 0.1
Hz and 50 ° by default).
Instead, with the Bar dead, and "Standard" configuration:
• The search for the synchronism is started if the internal voltage is greater than or equal to
a minimum (0.5 Un by default), for a minimum time (1 s by default).
• The synchronism is considered to be reached if the external voltage is less than or equal
to a maximum (0.2 by default) for a minimum time (1 s by default).
With Bar dead, and "Reversed" configuration, the roles of the internal and external voltages
are inverted.
To the above-mentioned synchronism conditions, we can add that of circuit-breaker open (by
enabling the condition “evaluate CB status”, disabled by default).
The frequency and phase controls can be disabled.
IMPORTANT: to be able to disable frequency and phase controls, make sure
that the correspondence of the desired frequency and phase already exists
between external and internal contacts.
The synchronism signal is activated when the synchronism is reached, and is kept active for at
least 200 ms. After 200 ms, it is kept active while the synchronism is present, and deactivated
when the synchronism falls, or the circuit-breaker is open (with condition "Evaluate CB Status"
enabled), or the communication with the release is interrupted.
Lastly, the Ekip Synchrocheck module makes the pins of a contact (K S1 and K S2) available
on the terminal box. Depending on how the module is configured, this contact is either normally
open or closed, and changes status when synchronism is achieved.
IMPORTANT: only one Ekip Synchrocheck module can be installed on the
same circuit-breaker.
Compatibility and power supply
The module can be installed in the presence of Ekip Touch, Hi-Touch, G Touch, and G Hi-Touch
releases, and requires the presence of an Ekip Supply module in the first slot of the circuit-
breaker terminal box.
