Testing The Battery Condition; Measurement Of Open-Circuit Voltage And Short-Circuit Current Of The Pv Generator; Measured Value Memory; Storing Measured Values - Benning PV 3 Bedienungsanleitung

- Press the key 6 to select a date / time field.
- As soon as the field is flashing, the value for that field can be set.
- Press the keys
Every change resets the field for the seconds to zero.
- Switch the device off by simultaneously pressing the the keys
Note:
If the BENNING PV 3 has established a radio connection to the BENNING SUN 2, the date/ time of the
BENNING PV 3 will be synchronized automatically after 10 seconds to the date/ time of the BENNING
SUN 2, if the device detects a deviation of more than 1 minute. BENNING SUN 2 (master) → BENNING
PV 3 (slave).
8.1.5

Testing the battery condition

During switch-on and operation, the BENNING PV 3 carries out an automatic battery test. Discharged bat-
teries are indicated by a battery symbol I on the LC display 1 . As soon as the battery symbol is flashing,
the batteries have to be recharged immediately. (see chapter 9.4, "Battery replacement").

8.2 Measurement of open-circuit voltage and short-circuit current of the PV generator

The PV module/ PV string must not exceed the maximum opencircuit voltage of 1500 V
DC, the maximum short-circuit current of 40 A and the maximum DC power (P = U x I)
c
of 45 kW.
Measuring at PV strings connected in parallel might involve damages of the BENNING
PV 3!
The PV generator must be isolated from the electric power supply (PV inverter)! Neither
c
the positive nor the negative pole of the PV generator must be earthed!
Do not disconnect any measuring lines from the PV generator as long as the test is
c
being carried out. Failure to do so might result in a dangerous electric arc or damage
to the BENNING PV 3!
Only use the included PV measuring lines or the measuring lines with attached alligator
c
clips for safe contacting of the PV generator.
In case DC polarity is wrong or DC voltage is within the range of < 5 V or > 1500 V, it is

not possible to make an automatic PV measurement.
- Connect the BENNING PV 3 to the PV generator using the included PV measuring leads or the meas-
uring leads with attached alligator clips.
- Measurement of the PV open-circuit voltage is made automatically, if a DC voltage is applied.
- In case of reversed polarity of the DC voltage, the polarity indication „
is displayed. Automatic measurement will be blocked until the polarity of the DC voltage is correct.
- As soon as a voltage of > 30 V is applied to the PV measuring leads, the
(Attention, dangerous voltage) is flashing.
- Press the key 6 to start short-circuit current measurement.
- The measured values will be shown on the display 1 for approx. 20 seconds or until a key is pressed.
See figure 3: Measurement on the PV generator

8.3 Measured value memory

8.3.1

Storing measured values

The BENNING PV 3 can store up to 999 display indications. For each memory location, the open-circuit
voltage and the short-circuit current are stored with a date/time stamp. If there is a radio connection to the
BENNING SUN 2, the insolation and the PV module/ambient temperature are additionally stored for each
storage location.
- Press the key 2 to store the displayed measured values to the first free storage location. Successful
storage will be confirmed by the "STORE" symbol F on the LC display 1 .
8.3.2

Calling measured values

- Press the key 3 to recall the stored measured values with the corresponding storage location
01/ 2019
2 and 3 to increase or decrease the value.
BENNING PV 3
2 and 3 to store the setting.
" B is flashing and the symbol
c
warning symbol C

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