In China, the main imported printing machine brands include Heidelberg, Manroland, Koenig & Bauer, Komori, etc. The installation of voltage stabilizers on printing machines is primarily to protect the circuit boards of the printing machines. The working voltage of Heidelberg, Manroland, and Koenig & Bauer printing machines is three-phase 400V, while the domestic three-phase voltage in China is 380V. Generally, a voltage stabilizer is used to raise the voltage to 400V to ensure that the circuit boards of the printing machines do not burn out.
Compared with other types of stabilizers, printing equipment-specific voltage stabilizers have the advantages of large capacity, high efficiency, no waveform distortion, smooth voltage regulation, wide load adaptability, ability to withstand transient overloads, continuous long-term operation, manual/automatic switching, with overvoltage protection, phase loss, phase sequence protection, and automatic mechanical fault protection. The machine operates reliably, has a small size, light weight, and easy installation and use (displayed in fractions and instrument indicators). It has the following typical characteristics:
• High voltage stabilization accuracy: using RMS effective value sampling control board, voltage stabilization accuracy adjustable from 1% to 5%.
• Fast response speed: less than or equal to 0.05S.
• Wide range of load types: suitable for all types of loads including inductive, capacitive, and resistive.
• Full protection functions: equipped with overvoltage, undervoltage, overcurrent, short circuit, overheating, phase loss protection, etc.
• Wide voltage stabilization range: standard ±20%, customizable range from ±30% to ±50%.
• High overall efficiency: stabilizer efficiency ≥98%.
• Excellent output waveform: no distortion or harmonics in the output voltage waveform.
• High degree of self-control: full automatic voltage stabilization, automatic start delay, automatic fault recovery function.
• Large load capacity: stabilizer capacity available from 1KVA to 2500KVA.
• Full communication functionality: RS485+RS232+GRPS three communication methods optional, compliant with Modbus-RTU protocol.
• Strong purification capability: high-pass flow surge suppressor configured at the input end of the printing stabilizer, solving the impact of lightning induction and interference pulse spikes on equipment.