What Is a Distribution Board?

The power distribution board is a simple power distribution screen in which electrical components such as sockets, switches, and relays are arranged on a bakelite board. Applicable to coastal, ocean and river ship power stations, DC 220V or below, 440V50Hz or 450V60Hz power grid.

Switchboard

Chinese name: Switchboard
Foreign name: switchboards

Use: Coastal, ocean and river ship power stations
Classification: PDJ series marine power distribution board
The main function: Sequential start of important loads, etc.

The power distribution board is a simple power distribution screen in which electrical components such as sockets, switches, and relays are arranged on a bakelite board, wood board, or other materials.

The manufacture of the main switchboard complies with GB / T11634-2000 "General technical requirements for marine AC low-voltage switchboards", China Classification Society "Code for Classification and Construction of Steel Sea-going Ships" 2006), "Steel Inland River

The switchboard is suitable for coastal, ocean and river ship AC and DC power stations, DC below 230V, AC 440V50Hz or 450V60Hz power grid, with a single power of 12kW-900kW. It is used to control and monitor the work of the main generator, and to send the electricity Electrical energy or electricity from shore power is distributed to all marine electrical equipment through the main switchboard.

The distribution board is divided into the main distribution board and

ABBMD190 (HONOR) 'Anya' series low voltage switchgear is tested by TILVA and ASTA, and complies with BS and IEC standards. The module modulus is 190mm. The switchgear structure can be expanded according to user requirements.

PDJ series marine power distribution board is suitable for three-phase AC400V / 50Hz or AC440V / 60Hz, single-phase power from 20kW to 1600kW and below 30V DC AC and DC system, used to control, monitor and protect generators.

1. When the power grid loses power, it can automatically start the diesel generator and automatically close the power supply within 20 seconds.
2. When the diesel generator is supplying power, if the grid load exceeds 90% of the capacity of a single unit, the standby diesel generator set will be automatically started, and the automatic closing and frequency regulation will be implemented to realize dual-unit parallel operation and power supply.
3 When the grid load exceeds 95% of the total capacity of the power station, non-critical loads are automatically unloaded after a 1-minute delay (time is adjustable).
4 When the diesel generators are operated in parallel with two generators, if the load on the power grid is less than 40% of the capacity of the power station, the units connected in parallel will be automatically transferred and automatically decommissioned from the power grid.
5. Reload query function. A heavy load inquiry is required before starting a heavy load, which is calculated by the automatic power station. If the capacity of the power station is allowed to start, a start command is issued; if the capacity of the power station is too small and the unit is running, the standby diesel generator set is automatically started. The heavy load can be started only after the start command is issued by the automatic power station to ensure that the power grid will not cause overload trips due to sudden start of high-power motors.
6. The automatic power station has a self-check function.
7. Automatic power stations have extended alarm functions as specified in the AUTO-O specification.
8. Sequential starting of important loads.

1.Generator overload and short circuit protection

2.Over-voltage, under-voltage and power failure protection 3.Reverse power protection 4.Manual or automatic quasi-synchronization of generators

5.Manual or automatic frequency adjustment of generator

6.Motor voltage, current, frequency and power measurement

7.Parallel synchronization detection

8. Shore power interlocking

9, wind oil remote cut

10. Grid insulation performance monitoring

11.Fault alarm processing

12. Ground fault protection (must be selected)

13. Proportional distribution of active load in parallel operation (selection required)

14. Generator overload and staged unloading (selection required)