Automatic Voltage Regulation
Automatic voltage regulation (AVR) is the auto-transformer-based voltage-compensation feature found on line-interactive UPS units. Instead of using the inverter and battery to ride out sags and surges, the unit switches between transformer taps to boost or buck the output voltage, keeping it within an acceptable window. This preserves battery life (the battery only takes the load on deeper events) and improves full-load efficiency relative to online double-conversion.
The Vision page describes “automatic voltage transformer regulation” as the core mechanism. AVR has a working window (sags and surges within ±15–25% of nominal are typical thresholds) — events outside that window force inverter cut-in.
Implemented by
- Vision — auto-transformer regulation across 800–2000 VA
Connections
- Vision — implements_feature, source: https://standbysystems.co.za/ups_products/vision-800-2000va/
- Line-Interactive — depends_on, source: https://standbysystems.co.za/ups_products/vision-800-2000va/