EPS PSB 10000 4U, Руководство по эксплуатации

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© EPS Stromversorgung in 2022, this information is subject to change without notice 86 30000800_manual_psb_10000_4u_30kw_en_04
► How to load an IU table from a USB stick:
1.
While the DC terminal is switched off, open the function selection menu by tapping on , then select group
XY table .
2.
In the right-hand part select to run the function in either sink mode with IU table (EL) or select IU table (PS) to run the
function in source mode.
3.
Insert the USB stick, if not already done, then tap on Import table and in the file selector coming up select the table you
want to load and confirm with . In case the file is not accepted for any of the above listed reasons, correct the
file format and content, then try again.
4.
Tap to proceed to the next screen where you can adjust the global set values.
5.
Finally proceed to the main function screen with , to start and control the function (also see “3.11.4.1.
Function selection and control”).
3.11.13 Simple PV (photovoltaics) function
3.11.13.1 Preface
This function runs exclusively in source mode (PS) and uses the
integrated XY generator to have the power supply simulate solar
panels or cells with certain characteristics by calculating an IU
table from four typical parameters.
While the function is running, the user can adjust a 5
th
parame-
ter called Irradiance to simulate different light situations.
The most important characteristics of a solar cell are:
• the short-circuit current (I
SC
), the maximum current at almost
0 V
• the open circuit voltage (U
OC
), which almost reaches its max-
imum value even in low light situations
• the maximum power point (MPP), at which the solar panel can provide the maximum output power, defined by U
MPP
and
I
MPP
The voltage of the MPP (here: U
MPP
) lies typically 20% below U
OC
, the current of the MPP (here: I
MPP
) lies typically 10% below
I
SC
. In case there are no definite values for the simulated solar cell available, Impp and Umpp can be set to these typical val-
ues. The device limits the I
MPP
value to I
SC
as upper limit, the same applies to U
MPP
and U
OC
.
3.11.13.2 Safety notices
Due to high capacitance on the DC terminal of some models, not every available solar inverter can be
operated without problems. Check the technical specifications of the solar inverter and probably con -
tact the inverter’s manufacturer for an evaluation.
3.11.13.3 Usage
In the PV function, which is based upon the XY generator and an IU table, the MPP (maximum power point) is defined by the
two adjustable parameters Umpp and Impp (also see diagram below). These parameters are usually stated in data sheets of
solar panels and have to be entered here.
The following parameters can be set for the PV function:
Parameter Range Description
Uoc Umpp ...rated device voltage Open circuit voltage at no load
Isc Impp ...rated device current Short-circuit current at max. load and low voltage
Umpp 0 V...Uoc DC output voltage of the MPP
Impp 0 A...Isc DC output current of the MPP