User Manuals & Tech Notes

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AC Output Power De-Rating in Off-Grid
Mode
If the AC output load power is higher
than the power in the diagram to the
right, the AC output voltage will be
decreased until the AC output power
reaches the de-rated power specified to
conserve battery. The lower limit of the
AC output voltage de-rating is -20 /
-40 Vac for 120 Vac models and 230 Vac
models, respectively, compared to the
nominal AC output voltage setting. For
the PSW-H-6.5KW-120/48V the lower
limit of the AC output de-rating is 95% x
the nominal AC output voltage setting.
12.3 Battery Charging
Charging from AC Source
Model
PSW-H-5KW-
230/48V
PSW-H-3KW-
230/24V
PSW-H-5KW-
120/48V
PSW-H-6.5KW-
120/48V
PSW-H-8KW-
230/48V
PSW-H-3KW-
120/24V
Max. Battery Charging
Current at Nominal AC
Input Voltage
80 Adc
120 Adc
80 Adc
Boost
Charging
Voltage
Flooded Battery
58.4 Vdc
29.2 Vdc
58.4 Vdc
29.2 Vdc
AGM / Gel
Battery
57.6 Vdc
28.8 Vdc
57.6 Vdc
28.8 Vdc
Floating Charging Voltage
55.2 Vdc
27.6 Vdc
55.2 Vdc
27.6 Vdc
Overcharge Protection
66 Vdc
33 Vdc
66 Vdc
33 Vdc
Charging Algorithm
4-Stage with equalization
Charging Curve
If battery type “User-
defined” is set in chapter
“Device Operation
Settings” → “Settings
menu 05”, the charging
parameters are set with the
following settings menus:
Charge current limit: 11
Boost voltage: 26
Boost duration: 32
Float voltage: 27
Equalization: 33, 34, 35, 36,
37
Battery Voltage & Current
Bulk: phase 1
(charge current limited)
Absorption or
Equalization: phase 2/3
(boost or equalization
voltage limited)
Floating: phase 4
(float voltage limited)
Time
Voltage
Current
Battery voltage for
24 Vdc / 48 Vdc
model
AC Output Power
Nominal Power
Nominal Power x 0.8
18.8 / 37.5 Vdc 25 / 50 Vdc*
*48 Vdc for PSW-H-6.5KW-120/48V