Thailand has become one of Southeast Asia’s major manufacturing hubs, with industries including automotive, electronics, food processing, petrochemicals, and smart factories continuously expanding. With the increasing adoption of automation equipment, variable frequency drives (VFDs), robotics, UPS systems, and renewable energy systems, industrial power networks are becoming more complex.

For modern factories, stable electricity supply is no longer the only requirement. Power quality has become a key factor affecting production efficiency, equipment lifetime, and operational safety.

Common power quality issues in factories include:

• Voltage fluctuations and voltage dips causing equipment shutdowns
• Harmonic distortion generated by VFDs, UPS, welding machines, and power electronics
• Low power factor increasing electricity costs
• Voltage imbalance affecting motors and production equipment
• Transient events damaging sensitive electronic devices

These problems may lead to unexpected production downtime, equipment overheating, reduced machine efficiency, and increased maintenance costs. Harmonic and voltage quality issues are especially important for factories with advanced automation systems and solar PV installations.

The Acrel APVEIW500 PQA helps factories monitor power quality, ensuring production efficiency, equipment lifespan, and operational safety.

(https://www.acrel.co.th/shop/apview500-series-power-quality-monitor)

Key Functions of APVIEW500
1. Comprehensive Power Quality Measurement
 

• Voltage and current
• Active power, reactive power, apparent power
• Power factor
• Frequency
• Voltage and current harmonics
• Total harmonic distortion (THD)
• Voltage imbalance
• Voltage sag, swell, interruption events

With accurate measurement data, engineers can analyze the causes of power quality problems and optimize the factory electrical system.

2. Harmonic Analysis for Modern Industrial Loads

Modern factories use many nonlinear loads such asVFDs,servo motors can introduce harmonics into the power system, causing transformer overheating, capacitor failures, motor vibration, and equipment malfunction.

APVIEW500 provides detailed harmonic monitoring, helping factories evaluate harmonic levels and take corrective actions such as installing harmonic filters or optimizing system design.

3. Integration with Energy Management Systems

APVIEW500 supports communication with industrial monitoring platforms through standard communication protocols such as Modbus-RTU / Modbus-TCP, enabling integration with SCADA,BMS,etc.

（A temple with solar panels installed an APVIEW500 at a substation to monitor power quality.）