HT instruments MPP300 - Manual (Page 13)

MPP300
EN - 11
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 colors indicated in Fig. 2 or Fig. 3.
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 the user manual of SOLAR I-V)
9. Connect the output connector of the DC clamp to the IDC1 input of unit MPP300
CAUTION
BEFORE CONNECTING THE DC CLAMPS TO THE CONDUCTORS
Switch on the clamp, check the LED indicating the status of the clamp’s
internal batteries (if present), select the correct range, press the ZERO key
on the DC clamp and check on the display of SOLAR I-V the actual zeroing
of the corresponding Idc value (values up to 0.02A are acceptable)
10. Insert the DC current clamp onto the positive output conductor of the string, respecting
the direction of the arrow found on the clamp itself as indicated in in Fig. 2 or Fig. 3.
Position the clamp toroid as far as possible from the inverter and from the negative
output conductor of the string itself
11. Repeat the operations described in the two steps above for other possible DC power
trackers to be monitored by using the IDC2 and IDC3 inputs according to the number of
DC inputs set (see the User Manual of SOLAR I-V)
12. Connect the VAC1 and N inputs of unit MPP300 to the Phase and Neutral conductors
respectively, respecting the polarities and the colours indicated in Fig. 2 or Fig. 3. In
case of three-phase systems in which no Neutral conductor is available, connect input
N to earth
13. In case of inverter with three-phase output (see the User Manual of SOLAR I-V), repeat
the operation described in the step above for the remaining phases by using the VAC2
and VAC3 inputs of MPP300
14. Connect the AC clamp to the Phase L1 conductor, respecting the direction of the
arrow found on the clamp itself as indicated in Fig. 2 or Fig. 3. Position the clamp
toroid as far as possible from the inverter and from the Neutral conductor. Connect the
clamp output to the IAC1 input of MPP300
15. In case of inverter with three-phase output (see the User Manual of SOLAR I-V), repeat
the operation described in the step above for the remaining phases by using the IAC2
and IAC3 inputs of MPP300
16. Restore the operation of the electrical system being measured