HT instruments SOLAR I-V - Manual (Page 30)

I-V400 - SOLAR I-V
EN - 28
CAUTION
 When SOLAR I-V 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-V 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-V, 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-V, 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-V, 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-V
 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).