System Epo; Hard Fault - ABB SureWave SFC User Manual

74/78 SUREWAVE SFC USER MANUAL
The load may be transferred from either machine by setting the unload command on the SFC or
unloading the Generator.
11.6.3 External voltage sense board calibration
If the SFC has an output transformer, the transformers' output voltage and the voltage phase
angle will be different to inverter output (transformer input). When the external voltage sense
board is used for remote synchronization, these differences will need to be trimmed out. Please
refer to the SureWave commissioning manual for a complete detailed transfer procedure de-
scription.
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System EPO

The system Emergency Power Off (EPO) is a digital input linked to the site EPO and use to in-
hibit the SureWave SFC operation in case of emergency shut down. For larger systems > 750kVA
the emergency inhibit action will not open the CBs located inside the termination enclosures.
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Hard fault

Hard faults are extremely rare situations where multiple failures occur at the same time, and the
system is not capable of keeping the correct operation any longer. In the case of hard fault the
SureWave will stop operation and report accordingly. For larger systems > 750kVA a hard fault
scenario will not open the CBs located inside the termination enclosures.