Charge Characteristic/Output Power Diagram; Figure 6) - Psr312/24-50 Output Power Diagram - Eltek PSR312 User Manual

Rectifier
PSR312
User Manual
Page 12 (20)

4.3 Charge Characteristic/Output Power Diagram

The charge characteristic of the PSR312 is a power limited IV characteristic curve in accordance with
DIN 41772/DIN 41773.
For modules in parallel operation mode a load sharing of about ±10 % is attained due to a sloping output
voltage line (-1 % at 100 % Inom).
The module is continuous short circuit proof.

Figure 6) - PSR312/24-50 Output Power Diagram

Calculation of the output current (Io) at different output voltage values:
The PSR312 rectifier provides an output power of Vonom x Ionom= Ponom (24 V x 50 A= 1200 W)
As shown with the output power diagram (see figure 6), the nominal output current (50 A) is available at
nominal output voltage (24.0 V).
At other output voltage values (e.g. float and boost charge voltage as well), the output current is
corresponding to the following formula: Io= Ponom : Vo
Example 1):
Float charge voltage for lead acid batteries (12 cells)= 27.24 V; Io= 1200 W : 27.24 V= 44 A
Example 2):
Boost charge voltage for lead acid batteries (12 cells)= 28.8 V; Io= 1200 W : 28.8 V= 41.7 A
©2011. ELTEK DEUTSCHLAND GmbH. Eltek_UM_PSR312_21TE_ E_R6.0