![background image](http://html1.mh-extra.com/html/ht/i-v400w/i-v400w_user-manual_2178116030.webp)
I-V400w - I-V500w - SOLAR I-Vw - SOLAR I-Ve
EN - 28
Fig. 6: Connection of MPP300 for testing a three-phase PV system
CAUTION
When SOLAR I-Vw or SOLAR I-Ve is set in order to use MPP300 as a
remote unit, ALL connections relevant to electrical quantities (voltages and
currents) must be carried out on unit
MPP300
. SOLAR I-Vw or SOLAR I-
Ve must have
no voltage nor current
connected to its inputs.
The maximum voltage for the inputs of
MPP300
is
1000VDC
between
inputs VDC1, VDC2, VDC3 and
600VAC
between inputs VAC1, VAC2,
VAC3. Do not measure voltages exceeding the limits given in this manual.
Exceeding these limits could result in electrical shocks to the user and
damage to the instrument.
In order to guarantee the operator’s safety, while making the connections,
disable the system being measured by means of the switches/breakers
upstream and downstream of the DC/AC converter (inverter).
1. Check and, if necessary, set the sensitivity of the reference cell on SOLAR-02 consistently
with the type of PV modules which will be measured (please refer to the User Manual of
SOLAR-02).
2. We recommend making a preliminary evaluation of the value of irradiation on the surface of
the PV modules being tested by means of unit SOLAR-02 (operating independently) and the
reference cell
3. Switch on SOLAR I-Vw or SOLAR I-Ve, check and, if necessary, change the settings
relevant to the type of remote unit, to the minimum irradiation threshold, to the full scale of
the AC and DC clamps, to the integration period and to the parameters of the system being
measured (see § 5.1.4, § 5.1.5, § 5.1.6, § 5.2.2).
4. In order to guarantee the operator’s safety, disable the system being measured by means of
the switches/breakers upstream and downstream of the DC/AC converter (inverter).
5. Bring SOLAR I-Vw or SOLAR I-Ve, SOLAR-02 and unit MPP300 nearer (maximum
distance of 1m between them).
All instruments must be switched on
(see the User
Manuals of SOLAR-2 and MPP300 for further details).
6. On SOLAR I-Vw or SOLAR I-Ve, press the
MENU
key, select the function
EFF
and press
ENTER
; wait for the three units to start communicating with each other. This condition is
highlighted by the contemporary presence of the following indicators:
Symbol
steady (not flashing) on the display of SOLAR I-Vw or SOLAR I-Ve
Symbol
steady (not flashing) on the display of SOLAR-02
MASTER and REMOTE LEDs flashing green on unit MPP300
7. Connect the
VDC1(+)
and
VDC1(-)
inputs of unit
MPP300
to the output terminals of the
string, respecting the polarities and the colours indicated in Fig. 5 or Fig. 6
8. Repeat the operation described in the step above for other possible DC power trackers
to be monitored by using the
VDC2
and
VDC3
inputs according to the number of DC
inputs set (see § 5.2.1.1).