Select the "Inverter Start" command on the screen. The inverter will sync with the bypass voltage and seamlessly take over the load. Transferring to Maintenance Bypass
Rectifier control loop malfunction or high ambient temperature.
The static switch will transfer the load from the bypass line to the inverter. Confirm the green "Load on Inverter" LED is illuminated. Shutting Down the UPS to Maintenance Bypass liebert hipulse d ups manual
Maintain an ambient room temperature between 20°C and 25°C (68°F to 77°F). Operating at higher temperatures drastically reduces battery lifespan. Electrical Connections Input Power: Connect the three-phase input cables (
The inverter frequency does not match the bypass utility frequency. Automatic transfer to bypass is temporarily disabled. Select the "Inverter Start" command on the screen
If you change parameters (e.g., output voltage from 400V to 380V), annotate the manual near the parameter table. Future engineers will thank you.
Schedule a comprehensive infrared thermal scan of all electrical connections to detect loose terminations. Clean internal dust accumulations using anti-static vacuums. Perform a controlled battery discharge test to evaluate capacity. Common Alarm Resolutions The static switch will transfer the load from
Typically 0.8 lagging (varies by specific model configuration) IGBT-based PWM control Overload Capacity 110% for 60 mins; 125% for 10 mins; 150% for 1 min 3. Operating Modes