Functions
• Tie breaker close sequence (with synchronisation)
• Load transfer between emergency and main busbar without synchronisation
◦ Uses short blackout, with configurable delay
◦ Tie breaker close sequence and generator breaker close sequence
• Test sequence
• Harbour mode start and stop sequences
Emergency functions
• Blackout start and handling (immediate or delayed), from AUTO or SEMI mode
• Selectively disable protections using the EDG handling blackout inhibit
• Main busbar is OK digital input
Test functions
• Engine test
◦ Emergency genset start (does not synchronise or connect to the busbar)
• Load take-over test
◦ Emergency-load (supplies the emergency busbar, tie breaker opened)
• Parallel test
◦ Base-load (synchronises and connects to the busbar, tie breaker closed)
Harbour operation
• Emergency genset powers the ship
• Economic operation for low loads, for example, in harbour
• Confirm harbour operation from display unit
Regulation
• PID regulators for analogue outputs
• P regulators for relay outputs
◦ Relay period time and Minimum ON time configurable
• Set point selection
◦ Activate external offsets or set points using DI, CustomLogic, or Modbus
• Governor
◦ Frequency regulation
◦ Frequency and phase synchronisation
◦ Load sharing (active power)
◦ Fixed power
• AVR
◦ Voltage regulation
◦ Load sharing (reactive power)
◦ Fixed reactive power
◦ Fixed cos phi
• External set point
◦ From an analogue input
◦ From Modbus
• Configurable: Power ramp up, power ramp down
• Optional inputs: Manual regulation
• Three sets of temperature-dependent power derate settings
Counters
• Display unit counters, to edit or reset
◦ Start attempts
◦ Running hours (total and trip)
◦ Generator breaker operations and trips
◦ Tie breaker operations and trips
◦ Power export (active and reactive)
◦ External breaker operations
• Energy counters with configurable digital outputs (for external counters)
DESIGNER'S HANDBOOK 4189340911K UK Page 322 of 521
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