»With the PTO mode, we’re able to optimise the efficiency of the main engine, reducing both fuel consumption and service intervals.«
Jon Sigurd Samuelsen, Chief Engineer, Gitte Henning
Variable shaft generator frequency reduces fuel usage
Smooth sailing
Denmark's biggest fishing vessel Gitte Henning is equipped with a 5,220 kW main engine, a 3,000 kW shaft generator, two auxiliary generators (2,470 and 790 kW) and a small 140 kW emergency generator.
In cooperation with Scantechnic, DEIF delivered a complete Delomatic 4 PMS featuring one-touch operation for all six standard operation modes as well as custom-designed Power Take In (PTI) and shaft boost modes that are selectable only from the controller pitch propeller. Utilising the Power Take Out (PTO) mode split function of DEIF’s Delomatic PMS system, however, the shaft generator frequency becomes variable between 50-60 Hz without triggering any busbar alarms. This allows for a wide variation in main engine speed without affecting constant voltage and frequency for the ship’s electrical network.
“With the PTO mode, we’re able to optimise the efficiency of the main engine, reducing both fuel consumption and service intervals” says Jon Sigurd Samuelsen. “It also makes for a smoother trip since it reduces vibrations in the vessel.”
Scantechnic
Scantechnic is a recognised supplier of electrical switchboards on the small and medium-sized ships market. The company builds main switchboards with generator control, synchronisation and load sharing using DEIF’s Delomatic 4 Marine PMS.
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Integrated systems DM-4 marine
- Internal system supervision
- Engine control, monitoring and protection
- 3-phase generator protections
- Automatic synchronisation
- Load sharing
- Dual ARCnet bus communication lines for redundancy
- Multiple display units and multiple Advanced Operator Panels
- Interface to the DEIF advanced graphical touch screen AGI
- 2 × Integrated RS-485 Modbus communication port
- 2 × CAN bus port for J1939 engine supervision, CANopen
- USB port for service software
- Up to 690 V AC direct AC inputs
- Alarm and event log
- Advanced load-dependent start/stop calculations
- Blackout prevention and recovery
- Priority selection
- Heavy consumer handling
- Base load function
- Trip of non essential load groups (preferential trip)
- Advanced fuel optimisation features
- One-touch auto sequences
- Dynamic positioning (DP-2) operation with closed bus tie breaker
- Fast dynamic load-share deviation protection
- Fast thruster load reduction
- Optimised load sharing
- 1 × Modbus TCP/IP
- Service software via ethernet for remote access
Generator protection unit GPU 300
- Comprehensive generator/busbar protection
- Smart synchronization check
- Supervision
- High resolution 5" colour graphic display with push-buttons
- Flexible and modular input/output with metal rack
- Plug & play, auto-configure I/O modules and network
- Integrated 5 × RJ45 ports with auto-detected multi-function
- Access to all connected units in one point
- Context-sensitive help in the controller display unit
- Event and alarm log, with real-time clock
- Pre-defined control settings
- User-friendly logic configuration tool, based on ladder logic and function blocks with monitor operation
- Password-protected, with customisable permission levels
- 3-phase AC measurement, up to 690 V AC directly, class 0.5
- Easy-to-use PC tool (PICUS)
- Advanced alarm handling with latch and shelve possible
Alarm panel AL8-2
- Compact Q96 design
- Extremely easy push-button programming
- Individual programming of each input: N/O or N/C, time delay, alarm inhibit, output and cable supervision
- Up to five units in main/extension configuration
- Clear identification of first alarm received in case of successive alarms
- Approved by classification societies
Insulation monitor, AC networks AAL-2
The insulation monitor AAL-2 - the features
The insulation monitor, AAL-2, from DEIF has a high number of features:
- Insulation monitoring of AC networks of up to 440 V AC
- 10 M or 1 M ranges
- Adjustable warning set point
- Delay to prevent unwanted warnings
Protection & power management PPM 300 PPM 300
- Synchronization
- Marine certified Power Management - ABP: Advanced blackout prevention (32dg)
- PLC logic
- Engine and Generator protection
- Engine CANbus
- Rear mount
- Flexible Hardware
- Additional I/O racks (9 racks)
- Ethernet Ring connection for Power management
- Redundant breaker feedback
- Colour Display
- Emulation
- Marine approval
- Heavy consumer
- Fast load reduction
- Fuel optimisation