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
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