The ZXD3000 V5.0 rectifier automatically adjusts its operational status according to the AC input voltage. The input features include the under-voltage protection, over-voltage protection, and power limit. 48V 3000W rectifier input and output Features: 1) Under-Voltage Protection When the AC input voltage is lower than the under-voltage threshold, the rectifier automatically shuts down and provides no output. Meanwhile, the alarm indicator is on. After the AC input voltage reaches the under-voltage recovery threshold, the rectifier automatically recovers. The under-voltage recovery threshold = the AC input under-voltage threshold + the return difference. The AC input under-voltage threshold is (85 ± 5) V and the return difference ranges from 8 V to 12 V. 2) Over-Voltage Protection When the AC input voltage is higher than the over-voltage threshold, the rectifier automatically shuts down and provides no output. Meanwhile,ZTE ZXD3000 the alarm indicator is on. After the AC input voltage falls to the over-voltage recovery threshold, the rectifier automatically recovers. The over-voltage recovery threshold = the AC input over-voltage threshold - the return difference. The AC input over-voltage threshold is (295 ± 5) V and the return difference ranges from 5 V to 10 V.es Wide temperature operating range -40°C / -40 °F to +75°C / 167°F -meets the harshest climatic 3) Power Limit The rectifier limits its output power according to the input voltage.