The VAAS( voltage automatic adjustment system ) is a kind of voltage sag corrector/active voltage conditioner which use different solution developed by Enrely company. It can prevent cost loss due to voltage sag in semiconductor, pharmaceutical and other power-critical manufacturing applications.
The VAAS can cut off voltage sag power source for short time, typically 1~3s, and supply power to load during the voltage sag moment. It can support power supply, adjust the voltage sag, adjust and the voltage raise, eliminate the load reference and provide real time monitoring of fault arc.
![Voltage Automatic Adjustment System]( "Voltage Automatic Adjustment System")
The effects of voltage sag
If voltage drop to 60% and keep the sag for more than 12 waveforms, the computer system will lost data and inner program will be disorder.
If the work voltage was lower than 85% of system rated voltage, the chip tester will stop work.
If the work voltage was lower than 50-80% of system rated voltage. The PLC program will stop work.
If the voltage drop to 70% or 90% of rated system voltage, and keep more than 6 waveforms, the speed controller will be switch out for safety.
For some high accuracy equipment, if the voltage drop to lower than 90% of rated voltage, and keep 2-3 waveform. The contact will release.
For motor contactor, if the voltage drop to lower 50%, and keep more than 1 waveform, the contactor will release.
If the voltage drop to lower than 80% of system rated voltage, the cooling motor will stop work.
The voltage sag will caused
![Voltage Automatic Adjustment System]( "Voltage Automatic Adjustment System")
Features
Respond time is less than 2ms.
Maximum Output duration time is 3s (others upon request).
Voltage accuracy is 1%.
Parallel installation.
Easy extend.