L10US-IB20, L10US-IB40, L10US-IB60 L10US-IB00, L15US-IB40, L15US-IB60 L15US-
IB00, L20US-IB60, L20US-IB00 UPS
4.3.6.7. Bypass settings
Bypass Volt Prot. Lower Limit: When the difference between the bypass voltage and the
rated voltage exceeds the lower threshold for the bypass voltage, the system determines that
the bypass voltage is abnormal and that the bypass is unavailable. The value can be –10%, –
15%, –20%, –30%, –40%, The default value is –30%.
Bypass Volt Prot. Limit: When the difference between the bypass voltage and the rated
voltage exceeds the upper threshold for the bypass voltage, the system determines that the
bypass voltage is not normal and that the bypass is unavailable.
• When the voltage level is 120V, the value range is 10%, 15%, 20%, 25%,
and 25% (default).
• When the voltage level is 127 V, the value range is 10%, 15%, and 20%
(default).
Bypass Freq Tracking Range: When the difference between the bypass input frequency and
the rated frequency is greater than this value, the system determines that the bypass
frequency is not normal, and that the bypass is unavailable. The value range is ±1%, ±2%,
±4%, ± 5%, ±10%(default).
Bypass Rate Tracking Rate: Inverter frequency tracking to bypass frequency rate. The value
range is 0.5~2Hz/s and is 1 by default.
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