Main Switchboard

The main switchboard is used to control the power station. It can operate, protect and monitor the diesel generator set, distribute power to the ship's power system, safely and reliably transmit power to related load equipment, realize manual, semi-automatic and automatic control of the power station, implement overload, undervoltage, reverse power, winding high temperature and other protections for the generator, and effectively, quickly and accurately remove the fault when the power supply system fails to ensure the minimum loss. When moored, it also plays the role of inputting shore power to users on board.

Technical Parameters	Model meaning
● Rated voltage: ≤AC690V/DC750V;
● Rated frequency: 50/60Hz;
● Rated short-time withstand current ≤100kA/s, rated peak short-time withstand current ≤235kA;
● The maximum current of the main bus is 6300A;
● Protection grade: IP23, IP44;
● Installation method: floor-standing.

Main functions and features

■ The main switchboard is used to control the power station. It can operate, protect and monitor the diesel generator set, distribute power to the ship's power system, safely and reliably transmit power to related load equipment, realize manual, semi-automatic and automatic control of the power station, implement overload, undervoltage, reverse power, winding high temperature and other protections for the generator, and effectively, quickly and accurately remove the fault when the power supply system fails to ensure the minimum loss. When moored, it also plays the role of inputting shore power to users on board.

■ The main switchboard can be equipped with an automatic power station management system to manage power station equipment efficiently, safely and reliably. The specific functions are as follows:

● Three control modes: manual, semi-automatic and automatic;

● Capable of power management of up to 16 generators, the system performs generator set control, power generation detection and generator set protection functions to achieve optimal control of the ship's power system;

● With heavy load inquiry function, before the high-power load equipment starts running, the power station management system can provide the most optimized power supply plan according to the real-time working conditions;

● The power supply function can be automatically restored after power failure;

● With self-checking function;

● Priority setting of standby units: The priority order of standby units can be determined arbitrarily without affecting the operating status of the units running on the grid.

● Communication function: with RS485 or RS232 communication interface;

■ The main switchboard can be equipped with an insulation monitoring system, with the following specific functions:

● System insulation display function: It can monitor the insulation condition of the busbar and each load branch of the distribution network in real time, and display the resistance value of each branch load.

● Insulation fault alarm and positioning function: When an insulation fault occurs in the power grid, the insulation resistance value of the faulty branch and the branch number and name where the fault is located can be automatically displayed and stored.

● Communication function: With Ethernet, RS485, RS422 and other communication interfaces;

■ The cabinet type of the main switchboard is independently developed and designed by the company, and has successfully passed the environmental tests of impact, vibration, tilt and swing, damp heat, mildew, salt spray, etc. in the environmental test of military equipment in GJB150.18-86 and GJB150A-2009. The main switchboard can work continuously and effectively in the ship environment conditions with relative air humidity ≤95%, condensation, salt spray, oil mist, mildew, impact, vibration, and the vibration environment conditions specified in GJB4000-2000.

■ Products can apply for and obtain marine product inspection certificates from classification societies such as CCS, ABS, GL, BV, KR, RINA, and DNV.

Product appearance

Note: The dimensions can be customized according to customer requirements.