Ekip Synchrocheck Module; Description; Compatibility And Power Supply - ABB SACE Emax E1.2 Operating Instructions For The Design Engineer

4 - Ekip Synchrocheck module

Description The Ekip Synchrocheck is an accessory module that, combined with the Ekip Measuring or Ekip Measuring
Compatibility and power supply The module can be installed combined with Ekip Touch, Hi-Touch, G Touch, and G Hi-Touch trip units, and
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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.
Ekip Synchrocheck measures the voltage on the external contacts (external voltage) while Ekip Measuring or
Ekip Measuring Pro measures it on the internal contacts (internal voltage). With a generator, and the circuit-
breaker in "Standard" configuration, the external voltage is that of the grid while the internal voltage is that
of the generator.
There are two types of operation:
• With busbar live, if the external voltage is other than zero.
• With a dead bus, if one of the voltages is nil (external with "Standard" configuration, internal with "Reverse"
configuration).
With live busbar:
• 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 a dead bus and "Normal" 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 achieved 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 a dead bus and "Reverse" configuration, the roles of the internal and external voltages are reversed.
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 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 achieved 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
trip unit 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 the synchronism is achieved.
IMPORTANT: only one Ekip Synchrocheck can be installed on each circuit-breaker.
Functionality is guaranteed with the circuit-breaker in the racked-in position.
requires the presence of an Ekip Supply module in the first slot of the circuit-breaker terminal box.
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Electronic accessories | 4 - Ekip Synchrocheck module