If the overload clears, manually reset the alarm via the control panel.
The inverter fails to synchronize with the bypass supply, or the system remains stuck in "Static Bypass" mode.
: If internal hardware repair is required, all AC and DC sources (including batteries) must be disconnected and de-energized. System Reset liebert hipulse d ups manual fix
The (2 to 160 kVA) is an industrial-grade, online double-conversion UPS designed to provide clean, reliable power to critical loads. However, even robust systems can encounter faults, such as input failures, inverter issues, or battery problems. When the system shuts down or goes into bypass mode, a manual fix or reset is often required to restore normal operations .
Disclaimer: This article is for informational purposes. Only certified electrical personnel should work on UPS systems. Always refer to the specific corresponding to your unit's serial number. If the overload clears, manually reset the alarm
Look at the current demand on the display screen. If it exceeds 100%, immediately identify and disconnect non-critical equipment downstream to reduce the load.
Ensure the battery bank is providing the correct voltage (e.g., ~400V - 500V DC for a standard 400V nominal bank). System Reset The (2 to 160 kVA) is
: "Input Single Phasing" or "Phase Reversal" often indicates a problem with the utility source or improper cable connections.
. Below is a guide on common faults and manual troubleshooting steps based on available technical documentation. Safety Critical Precautions