HT instruments MPP300 - Manual (Page 11)

MPP300
EN - 9
6. OPERATING INSTRUCTIONS
Further in this manual, a brief description is provided of the use of MPP300 together with
the MASTER instrument. For an exhaustive description of the controls and functions of the
MASTER instrument, please refer to the User Manual of the instrument itself.
For the sake of simplicity, further in this manual, the word “string” will be used, although
often the term “photovoltaic field” would be more correct. From the point of view of the
instrument, the management of a single string or of more parallel strings (photovoltaic field)
is identical. Furthermore, the acronym MPPT (Multiple Power Point Tracker) shall indicate
the characteristic of the DC/AC converter (inverter), capable of maximizing the DC power
which can be taken from the photovoltaic field, the acronym PRp shall indicated the
Performance ratio (evaluated on active powers). See § 9.1 for further details
ATTENTION
For the evaluation of the PRP only, the measurement of the DC (voltage and
current) is not strictly necessary. Conversely it is necessary if you want to
evaluate the performance of the photovoltaic section (ndc) and DC / AC
conversion (nac)
6.1.
PV SYSTEM TESTING FOR INSTRUMENTS OF TYPE 1 (SOLAR I-V)
6.1.1. Testing of PV systems with single/multi-MPPT inverter - single/three-phase AC output
The instrument SOLAR I-V, used together with remote units SOLAR-02 and MPP300,
allows testing PV systems characterized by 1 or more strings (with the same direction and
inclination) and single-phase or three-phase output
The remote unit MPP300 is capable of communicating with SOLAR I-V (to manage
synchronization and data download) and with the remote unit SOLAR-02 (for recording
irradiation and temperature values) via a wireless radiofrequency (RF) connection, which
is active up to a maximum distance of 1m between the units
Fig. 2: Connection of MPP300 for testing a single-phase PV system