Arcteq Generator Commander, Instruction Manual

Page: 329 / 561

Event block name Event names
CIN6 Close
CIN6 Bad
CIN7 Intermediate
CIN7 Open
CIN7 Close
CIN7 Bad
CIN8 Intermediate
CIN8 Open
CIN8 Close
CIN8 Bad
CIN9 Intermediate
CIN9 Open
CIN9 Close
CIN9 Bad
CIN10 Intermediate
CIN10 Open
CIN10 Close
CIN10 Bad
5.5.5 Synchrocheck (ΔV/Δa/Δf; 25)
Checking the synchronization is important to ensure the safe closing of the circuit breaker between two
systems. Closing the circuit breaker when the systems are not synchronized can cause several
problems such as current surges which damage the interconnecting elements. The synchrocheck
function has three stages: SYN1, SYN2 and SYN3. Their function and availability of these
stages depend on which voltage channels are set to "SS" mode or not. Voltage measurement settings
are located at Measurements
→
Transformers
→
VT module. SYN1 also includes synchroswitching.
When synchroswitching is used, the function automatically closes the breaker when both sides of the
breaker are synchronized.
When only U3 or U4 voltage measurement channel has been set to "SS" mode:
• SYN1 – Supervises the synchronization condition between the channel set to "SS" mode and
the selected system voltage (UL1, UL2, UL3, UL12, UL23 or UL31). Synchroswitch is
available.
• SYN2 – Not active and not visible.
• SYN3 – Not active and not visible.
When both U3 and U4 have been set to "SS" mode:
• SYN1 – Supervises the synchronization condition between the U3 channel and the selected
system voltage (UL12, UL23 or UL31). Synchroswitch is available.
• SYN2 – Supervises the synchronization condition between the U4 channel and the selected
system voltage (UL12, UL23 or UL31).
• SYN3 – Supervises the synchronization condition between the channels U3 and U4.
The seven images below present three different example connections and four example applications of
the synchrocheck function.
Genera Generattor Commander or Commander
Instruction manual
Version: 2.07
© Arcteq Relays Ltd
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