Rectifier Cabinet LYKG of Plasma Ignition System
Rectifier module LYKG2-20 adopts high frequency switching power transformation and isolation technology to complete AC to DC transformation function.
Centralized control unit LYKG2-20A-C, as the interface between PLC control unit and rectifier module, realizes constant current output control, current and voltage analog quantity collection, fault alarm collection, module start and stop control and other functions.
PLC control unit mainly realizes logical control during system operation and external signal collection, provides comprehensive online analog quantity and switching value information, as well as remote data transmission and communication interface functions.
Figure 1.2 and figure 1.3 are the external view of LYKG-4-120 rectifier cabinet and LYKG-6-180 rectifier cabinet with basic configurations respectively. For specific screen configuration, wiring terminal definition, external view, structure and dimensions, please refer to technical documents and drawings delivered with the product.
Figure 1.1 System composition
①DC voltmeter ②DC ammeter ③Operation indication ④Fault indication ⑤Touch control screen ⑥Emergency stop button ⑦PLC control unit ⑧Rectifier module ⑨Centralized control unit
Figure 1.2 Composition of LYKG-4-120
①DC voltmeter ② DC ammeter ③ Operation indication④ Fault indication ⑤ Touch control screen
⑥ Emergency stop button ⑦ PLC control unit ⑧ rectifier module ⑨ Centralized control unit
Figure 1.3 Composition of LYKG-6-180
High frequency switch power conversion and isolation technology.
High frequency inversion secondary rectification, high frequency transformer input and output isolation.
Small size and high efficiency.
Small space required for equipment and high density of power.
Wide power regulation range.
The output current is continuously adjustable, and the working current of the plasma generator is adjustable in a even wider range.
Modular redundant parallel operation with high reliability.
The modules are independent of each other and run in parallel. The maximum power output of the system can be changed by changing the number of rectifier modules.
Plugging technology at module input and output terminal, convenient for maintenance.
Plug type terminals are used for power input, output and control signals.
Perfect protection and alarm function against input overvoltage / undervoltage, over temperature, output overcurrent, etc.
Comprehensive supply of system switching value and analog quantity information about output current/voltage, system air/water signal, and operation condition, etc.
See the table below for main technical parameters of rectifier cabinet LYKG-4-120 and LYKG-6-180 with standard configuration.
|1||Input AC voltage||three phase 380Vac（+20%，-10%）|
|3||Input AC current||240A AC（MAX）||350A AC（MAX）|
|4||Rated output DC current||300A DC|
|5||Output current range||75—300A Continuous||120—300A Continuous|
|6||Generator voltage range||0-400V DC||0-650V DC|
|9||Power factor||≥0.95（rated input, full load）|
|11||Cooling Pattern||Forced air cooling|
|12||Maximum heat loss||≤6 kW||≤10 kW|
|13||Rectifier module model||LYKG2-20A||LYKG2-20C|
|others||No corrosive or explosive gas; No exposure to rain or sunshine.|