Ac/ Dc Voltage Measurement; Measured Value Memory; Storing Measured Values; Calling Measured Values - Benning PV 1 Bedienungsanleitung

Preset limiting values:

8.4 AC/ DC voltage measurement

- Disconnect the PV safety measuring leads from the PV test sockets 8 and 9 .
- Connect the red and black safety measuring lead to the corresponding 4 mm test sockets 
and K.
- Connect the measuring probes to the voltage source to be measured.
- The BENNING PV 1 automatically measures the voltage at the measuring probes.
- The polarity of the DC voltage is displayed by "+ / –" A. In case of AC voltage, "+ / –" A will
be displayed alternately.
See figure 7: Voltage measurement via 4 mm test sockets
8.5 Current measurement by means of optional AC/ DC current clamp adapter
BENNING CC 3 (part no. 044038)
By means of the optional AC/ DC current clamp adapter BENNING CC 3, the BENNING PV 1
can be used to measure the operating current of a PV system. The determined current values
can be stored in the internal memory of the BENNING PV 1 and can be recalled.
- Disconnect all measuring leads from the BENNING PV 1.
- Connect the BENNING CC 3 current clamp adapter to the 4 mm test sockets  and K of
the BENNING PV 1.
- Switch on the BENNING CC 3 current clamp adapter and select the 40 A range.
- Switch on the BENNING PV 1 and press the
clamp measurement is displayed.
- For direct current (DC) measurements, press the null balance key (ZERO) of the BENNING
CC 3 until a current value of approx. 0 A is displayed.
- Enclose the single-wire live conductor by means of the current clamp adapter.
- The measured current will be shown on the display 1 .
See figure 8: A C/ DC current measurement by means of optional current clamp adapter
BENNING CC 3
8.6 Measurement on several identical PV modules/ PV strings
For PV systems with several identical PV strings, the open-circuit voltages and short-circuit cur-
rents must be compared with each other at stable radiation conditions. The values should be
identical and should have a maximum deviation of 5 % (at stable radiation conditions). Moreover,
the measured values have to be compared with the values to be expected.
- At the beginning of the series of measurements, press and hold the
-key 6 in order to delete the measured value memory.
- Connect the first PV string of the PV generator to the BENNING PV 1.
- Press the -key 3 to start the automatic measurement of the first PV string.
Auto
- Press the -key 7 to store the measured values.
- Connect the next PV string to the BENNING PV 1 and press the
automatic measurement.
- Press the -key 7 to store the measured values.
- Repeat this procedure for all identical PV strings at stable radiation conditions.
- After measurement, the stored measured values can be recalled pressing the
soon as a measured value deviates by more than 5 % from the average value of all stored
measured values regarding the open-circuit voltage or short-circuit current, the ">5%" sym-
bol O starts flashing.
- To call the average values, press the
displayed. The average values of the open-circuit voltage and of the short-circuit current are
shown on the display 1 .
See figure 6: A utomatic solar panel measurement, ISO measurement via earthing conductor

8.7 Measured value memory

8.7.1

Storing measured values

The BENNING PV 1 can store up to 50 display indications. Depending on the measurements
carried out, the values for protective conductor resistance, open-circuit voltage, short-circuit
current, insulating resistance with testing voltage and even the measured AC/DC current
( BENNING CC 3) are stored for each storage location.
- Press the -key 7 to store the displayed measured values to the first free storage location.
Successful storage will be confirmed by the "STORE" symbol L on the LC display 1 .
8.7.2

Calling measured values

- Press the -key 6 to recall the stored measured values with the corresponding storage
location number N. The symbol "RECALL" M is displayed 1 . The storage location number
N is shown on the display 1 .
09/ 2011
V
ISO
250 V
500 V
1000 V
BENNING PV 1
Limiting value of insulating resistance
-key 3 until the
Auto
-key 6 repeatedly until the storage location 0 is
0.5 MΩ
1.0 MΩ
1.0 MΩ
symbol B for current
-key 7 and the
-key 3 to start the
Auto
-key 6 . As

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