2026.07.30Q&A
Voltage drop protector - the strongest protection against voltage drop-induced process abnormalities and equipment damag
Q1: What is a voltage drop (VPS)?
A1: A voltage drop (VPS) refers to a sudden decrease in the voltage of a power supply system over a short period of time, after which it returns to normal.
Q2: Can a voltage drop cause equipment shutdown?
A2: Possibly, and it is often one of the main causes of unexpected shutdowns. Many high-precision devices (such as semiconductor exposure machines, etching machines, electroplating equipment, PLC controllers, frequency converters, and servo motors) are extremely sensitive to power quality. When a voltage drop of only tens of milliseconds (ms) occurs, the internal protection mechanism of the equipment will be triggered.
Q3: What is a "voltage drop protector"? How is it different from a traditional UPS (Uninterruptible Power Supply)?
A3: A voltage drop protector (VSP) is a high-efficiency power compensation device specifically designed to address voltage drops. Compared to traditional UPS systems, VSPs have three significant advantages:
Q4: Why do equipment manufacturers need to incorporate voltage drop protectors into their equipment?
A4: The semiconductor industry has stringent SEMI 47 specifications and certifications. Voltage drop protectors have the fastest switching speed in the industry (0.5ms), effectively protecting equipment and preventing certification failure due to instantaneous voltage drop tests.
Q5: Why use supercapacitors?
A5: Compared to traditional batteries, supercapacitors have characteristics such as rapid charging and discharging, and long cycle life, making them suitable for applications requiring rapid energy release and compensation in situations with instantaneous voltage anomalies.
Q6: Does TGV process equipment require voltage drop protectors?
A6: Yes, it does. An assessment should be made based on the importance of the equipment and the risk of downtime. For example, laser drilling equipment, WET (Welding Electroplating), and electroplating processes may experience inconsistencies in process conditions if the equipment is interrupted. Therefore, assessments should be focused on critical equipment.
Q7: Which FOPLP (Factory-Operated-Plumbing) equipment is suitable for voltage drop protector evaluation?
A7: Yes, for FOPLP production lines, priority should be given to evaluating equipment such as coaters, developers, lamps, ETCH (Electrical Electroplating), and electroplating machines.
Q8: Where should voltage drop protectors be installed?
A8: Precise protection should be provided for equipment that truly needs it, rather than requiring large-scale power backup for the entire plant. The actual installation location should still be assessed based on site conditions after a site survey and power confirmation.
Q9: Which industries are suitable for voltage drop protectors?
A9: Semiconductors, wafer manufacturing, packaging and testing, LCD, OLED, Mini LED, Micro LED, advanced packaging, PCB, HDI, substrate, SMT, EMS, PCBA, electronic manufacturing, AI Server, CNC. High equipment downtime costs, long restart times, high capacity loading, or long spare parts repair lead times.
Q10: If the factory already has a UPS, is a VSP still needed?
A10: Not necessarily. It's recommended to first confirm whether voltage drop still occurs at the equipment end, or if voltage drop has previously caused equipment downtime, etc. Further evaluation is needed.
Q11: Does the SMT production line need a voltage drop protector?
A11: Not necessarily. It's recommended to evaluate key bottleneck equipment in the SMT production line, such as printers, solder paste printers, pick-and-place machines, and reflow ovens.
Q12: Which equipment in a PCB factory might need a voltage drop protector?
A12: Yes, prioritize evaluating equipment with long restart times after downtime. It's recommended to evaluate exposure machines, electroplating machines, etching machines, and drilling machines.
Q13: Which CoPoS devices might require a voltage drop protector?
A13: Yes, for high-value, high-precision, and high-availability equipment, a voltage drop protector is needed to mitigate the risk of equipment downtime due to sudden voltage drops. Examples include: Bonding, Coating, Developer, and Etch.
Q14: How can I determine the appropriate voltage drop protector capacity for my equipment?
A14: The capacity of the voltage drop protector needs to be assessed based on the actual power requirements and power specifications of the equipment. You can provide the equipment's rated power, voltage, current, number of phases, etc., and the MegaSun professional team will assist you in conducting a preliminary assessment and providing suitable VSP capacity and configuration recommendations. Please provide your equipment specifications to MegaSun's official email address, and a specialist will contact you.
A1: A voltage drop (VPS) refers to a sudden decrease in the voltage of a power supply system over a short period of time, after which it returns to normal.
Q2: Can a voltage drop cause equipment shutdown?
A2: Possibly, and it is often one of the main causes of unexpected shutdowns. Many high-precision devices (such as semiconductor exposure machines, etching machines, electroplating equipment, PLC controllers, frequency converters, and servo motors) are extremely sensitive to power quality. When a voltage drop of only tens of milliseconds (ms) occurs, the internal protection mechanism of the equipment will be triggered.
Q3: What is a "voltage drop protector"? How is it different from a traditional UPS (Uninterruptible Power Supply)?
A3: A voltage drop protector (VSP) is a high-efficiency power compensation device specifically designed to address voltage drops. Compared to traditional UPS systems, VSPs have three significant advantages:
| Comparison Items | Voltage Drop Protector (VSP) | UPS Uninterruptible Power Supply System |
| Main Application | Instantaneous voltage drop, voltage anomalies | prolonged power outages |
| Response Time | Approx. 0.5ms | Approx. 4ms ~ 10ms |
| Energy Storage | Supercapacitor | Commonly Battery |
| Size and Lifespan | Small size, long lifespan (semi-permanent product) | Large size, occupies cleanroom space, short battery life |
| Monitoring | Can be integrated with monitoring systems | NA |
A4: The semiconductor industry has stringent SEMI 47 specifications and certifications. Voltage drop protectors have the fastest switching speed in the industry (0.5ms), effectively protecting equipment and preventing certification failure due to instantaneous voltage drop tests.
Q5: Why use supercapacitors?
A5: Compared to traditional batteries, supercapacitors have characteristics such as rapid charging and discharging, and long cycle life, making them suitable for applications requiring rapid energy release and compensation in situations with instantaneous voltage anomalies.
Q6: Does TGV process equipment require voltage drop protectors?
A6: Yes, it does. An assessment should be made based on the importance of the equipment and the risk of downtime. For example, laser drilling equipment, WET (Welding Electroplating), and electroplating processes may experience inconsistencies in process conditions if the equipment is interrupted. Therefore, assessments should be focused on critical equipment.
Q7: Which FOPLP (Factory-Operated-Plumbing) equipment is suitable for voltage drop protector evaluation?
A7: Yes, for FOPLP production lines, priority should be given to evaluating equipment such as coaters, developers, lamps, ETCH (Electrical Electroplating), and electroplating machines.
Q8: Where should voltage drop protectors be installed?
A8: Precise protection should be provided for equipment that truly needs it, rather than requiring large-scale power backup for the entire plant. The actual installation location should still be assessed based on site conditions after a site survey and power confirmation.
Q9: Which industries are suitable for voltage drop protectors?
A9: Semiconductors, wafer manufacturing, packaging and testing, LCD, OLED, Mini LED, Micro LED, advanced packaging, PCB, HDI, substrate, SMT, EMS, PCBA, electronic manufacturing, AI Server, CNC. High equipment downtime costs, long restart times, high capacity loading, or long spare parts repair lead times.
Q10: If the factory already has a UPS, is a VSP still needed?
A10: Not necessarily. It's recommended to first confirm whether voltage drop still occurs at the equipment end, or if voltage drop has previously caused equipment downtime, etc. Further evaluation is needed.
Q11: Does the SMT production line need a voltage drop protector?
A11: Not necessarily. It's recommended to evaluate key bottleneck equipment in the SMT production line, such as printers, solder paste printers, pick-and-place machines, and reflow ovens.
Q12: Which equipment in a PCB factory might need a voltage drop protector?
A12: Yes, prioritize evaluating equipment with long restart times after downtime. It's recommended to evaluate exposure machines, electroplating machines, etching machines, and drilling machines.
Q13: Which CoPoS devices might require a voltage drop protector?
A13: Yes, for high-value, high-precision, and high-availability equipment, a voltage drop protector is needed to mitigate the risk of equipment downtime due to sudden voltage drops. Examples include: Bonding, Coating, Developer, and Etch.
Q14: How can I determine the appropriate voltage drop protector capacity for my equipment?
A14: The capacity of the voltage drop protector needs to be assessed based on the actual power requirements and power specifications of the equipment. You can provide the equipment's rated power, voltage, current, number of phases, etc., and the MegaSun professional team will assist you in conducting a preliminary assessment and providing suitable VSP capacity and configuration recommendations. Please provide your equipment specifications to MegaSun's official email address, and a specialist will contact you.
Top