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Applications:
PDJ marine switchboard is applicable to
three-phase AC400V/50Hz or AC440V/60Hz ship AC system with
unit power ranging from 20KW to 1600KW and ship DC system
lower than DC30V for controlling, monitoring and
protecting the generator. Switchboard is divided into main
switchboard and emergency switchboard. The main
switchboard directly connects with the main generator to
distribute the power from the main generator or from the
shore power station to the secondary distributing device
or directly to the power load. If the main switchboard
fails, the emergency switchboard supplies power for
important equipment such as emergency lighting, steering
devices, navigation and radio equipment, etc.
The switchboard complies with requirements
of GB11634-88 Marine AC Low Voltage Switchboard-General
Specification and GB11803-89 Marine AC Low Voltage
Switchboard-Construction and Basic Dimension as well as
classification societies.
Structural features:
ABB MD 190 (HONOR) LOW VOLTAGE SWITCHBOARD is tested
in accordance with TILVA and ASTA
requirements and built to BS and IEC Standards. The design
is based on 190mm modular system and is therefore
suitable for extension, rearrangement of the system
at your own will.
Main functions of the automatic power station:
1. If the power network fails, the station will
automatically starts the diesel generator in 20 seconds to
provide power.
2. If the load of the power network is higher than 90% of
the unit capacity, the station automatically starts the
standby diesel generation set to provide power together
through frequency and load adjustment.
3. If the load of the power network is higher than 95% of
the unit capacity, the less important loads will be
automatically powered off after one minute (adjustable)
delay.
4. When the diesel generators run in parallel, if the load
of the power network is lower than 40% of the capacity of
the station, then the generator set connected later will
automatically remove its load and disengage from the power
network.
5. Heavy load prompt. When heavy load is applied, it will
be prompted and calculated by the automatic generation
station. If the capacity of the station allows, it will
give starting instruction. If the capacity is less
sufficient and the generator runs alone, the station will
start the standby diesel generation set automatically.
Heavy can only be started when the starting instruction is
given by the station to prevent overload trip due to
sudden starting of high power machines.
6. The station has self checking function.
7. The station also has the extension alarm function
required by AUTO-O specification.
8. Sequential start-up of the important load.
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 Main
functions:
1. Overload and short-circuit protection of the generator.
2. Over-voltage, under-voltage and power-loss protection.
3. Reverse power protection.
4. Manual or automatic quasi synchronous parallel
operation of the generators.
5. Manual or automatic frequency adjustment of the
generators.
6. Voltage, current, frequency and power measurement of
the machines.
7. Synchronous inspection of the parallel operation.
8. Shore power interlock
9. Air-fuel remote shift
10. Insulation performance monitoring of the power network
11. Failure alarm handling
12. Grounding failure protection (to be selected)
13. Power load allocation of the parallel operation (to be
selected)
14. Overload and load shedding of the generators ( to be
selected)
15. Automatic start-up and shutdown of the emergency
generator (YK emergency generator automatic start-up
device is required) |
