Publicité
Les langues disponibles
Les langues disponibles
EN
4-1-1. Battery charging function description
The Gemini SC series is equipped with a PFC (Power Factor Corrected) and PI (Proportional-Integral)
multistage battery charger. The PFC feature controls the amount of power used to charge the batteries to
obtain a power factor as close as possible to 1 (or unity). This causes the battery charger to look like a resistor
to the line (forces the charge current wave shape to mirror the voltage wave shape). The PI feature allows the
charger voltage and current to change independently. These two features maximize the real power available
from the AC power source (i.e., utility or generator), which translates into less power wasted and greater
charging capabilities than most chargers today. When an AC source is connected to the AC input, the inverter
begins monitoring for acceptable AC voltage. Once the AC voltage is accepted, the AC transfer relay closes the
charge mode begins. After the charge mode begins, the inverter's battery voltage is monitored to determine the
charging stage. The charger will skip the Bulk and Absorb charge stages and go directly to Final charging.
However, if the incoming AC power is lost and returns within 2 minutes the charge mode returns to the charge
stage it was in prior to losing AC input—regardless of the battery voltage.
The three stages include an automatic 3-stage charging process: Bulk, Absorb, and Float Charge; and a
manual Equalization (EQ) charge stage. The automatic 3-stage charge process provides complete recharging
and monitoring of the batteries without damage due to overcharging. The EQ stage (requires a remote display
to enable) is used to stir up stratified electrolyte and to reverse any battery plate sulfation that may have
occurred. The AC input voltage falls below 90 VAC @1xx series / 180 VAC @2xx series– the charger will stop
charging to help stabilize the incoming AC voltage. The Charge mode provides up to three separate charging
stages: Bulk Charging, Absorb charging and Float Charge.
：
Fig. 14
Three step charge system
29
Publicité
