Xantrex Technology SW Plus 4024 - Manual (Page 194)

Advanced Setup
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20D Must Float Time Min
This menu item sets the minimum amount of time after the 20A Refloat
High Volts DC and 20B Refloat Low Volts DC settings have been
reached that the inverter will maintain the float voltage level on the
batteries before it reaches the 20C Float Done Amps AC setting and
returns to the Silent mode.
21 Grid (AC1) Usage Menu
This menu sets the conditions that determine how and when the inverter’s
AC1 (grid) input will be used.
To program grid usage parameters, the Advanced Setup Menu Headings
21 Grid (AC1) Usage Menu and 22 Battery Xfer Menu are used.
Table 7-4 Calculating the Float Done Amps for a 24-volt,
700 amp-hour Battery
Step Instruction Equation
1 Multiply the total battery amp
hours by 1% 700 x 1% = 7
(DC Max Charge Rate)
2 Divide the DC Max Charge Rate
by 4 7 ÷ 4 = 1
3 Set the 20C Float Done Amps
AC parameter. 1 amps AC
Table 7-5 Calculating the Float Done Amps for a 48-volt,
350 amp-hour Battery
Step Instruction Equation
1 Multiply the total battery amp
hours by 1% 350 x 1% = 3.5
(DC Max Charge Rate)
2 Divide the DC Max Charge Rate
by 2 3.5 ÷ 2 = 1
3 Set the 20C Float Done Amps
AC parameter. 1 amps AC
20D Must Float
Time Min
21 Grid AC1 Usage
Menu