HT MPP300 User manual

Copyright HT ITALIA 2012 Version EN 2.00 - xx/xx/2012
ENGLISH
User manual
中国总代理:Nano电子商城
Tel: [phone]
E-mail:[email protected]
http://www.19mro.com

MPP300
EN - 1
Table of contents:
1.PRECAUTIONS AND SAFETY MEASURES ...............................................................2
1.1.Preliminary instructions..................................................................................................... 2
1.2.During use......................................................................................................................... 3
1.3.After use............................................................................................................................ 3
1.4.Definition of measurement (overvoltage) category............................................................ 3
2.GENERAL DESCRIPTION...........................................................................................4
2.1.Introduction........................................................................................................................ 4
2.2.Instrument functions.......................................................................................................... 4
3.PREPARATION FOR USE...........................................................................................5
3.1.Initial checks...................................................................................................................... 5
3.2.Instrument power supply................................................................................................... 5
3.3.Calibration......................................................................................................................... 5
3.4.Storage.............................................................................................................................. 5
4.OVERVIEW ..................................................................................................................6
4.1.Instrument description....................................................................................................... 6
4.2.Description of the indication LEDs .................................................................................... 6
4.3.MASTER instrument.......................................................................................................... 6
4.3.1.Displaying the status of MPP300 by means of MASTER instruments of Type 1.................... 7
4.3.2.Displaying the status of MPP300 by means of MASTER instruments of Type 2.................... 7
5.SETTINGS ON MASTER INSTRUMENTS...................................................................8
5.1.MASTER instruments OF type 1 - Remote unit settings.................................................. 8
5.2.MASTER instruments OF type 2 – Remote unit settings.................................................. 8
6.OPERATING INSTRUCTIONS.....................................................................................9
6.1.PV system testing for instruments of Type 1 (SOLAR I-V)................................................ 9
6.1.1.TestingofPVsystemswithsingle/multi-MPPTinverter-single/three-phaseACoutput.......................... 9
6.2.PV system testing for instruments of Type 1 (SOLAR 300N).......................................... 15
6.2.1.TestingofPVsystemswithsingle/multi-MPPTinverter-single/three-phaseACoutput........................ 15
7.MAINTENANCE..........................................................................................................21
7.1.General information......................................................................................................... 21
7.2.Status of the internal rechargeable batteries................................................................... 21
7.3.Cleaning the instrument .................................................................................................. 21
7.4.End of life ........................................................................................................................ 21
8.TECHNICAL SPECIFICATIONS.................................................................................22
8.1.Technical specifications for test on PV systems ............................................................. 22
8.2.Reference standards....................................................................................................... 23
8.3.General characteristics.................................................................................................... 23
8.4.Environmental conditions for use.................................................................................... 23
8.5.Accessories..................................................................................................................... 23
9.APPENDIX – THEORETICAL OUTLINE....................................................................24
9.1.Testing photovoltaic systems.......................................................................................... 24
9.2.NOTES on MPPT (Maximum Power Point Tracker)........................................................ 25
10.SERVICE....................................................................................................................26
10.1.Warranty conditions......................................................................................................... 26
10.2.Service ............................................................................................................................ 26

MPP300
EN - 2
1. PRECAUTIONS AND SAFETY MEASURES
The instrument has been designed in compliance with directive IEC/EN61010-1 relevant to
electronic measuring instruments. Before and while carrying out measurements, observe
the following indications and read all notes preceded by the symbol with the utmost
attention
CAUTION
In case the instrument is used in a way different from the one described in this
user manual, this could result in a failure of the protections the instrument is
provided with
Do not carry out any voltage or current measurement in humid environments
Do not carry out any measurements in case gas, explosive materials or flammables are
present, or in dusty environments
Avoid contact with the circuit being measured if no measurements are being carried out
Avoid contact with exposed metal parts, with unused measuring probes, circuits, etc
Do not carry out any measurement in case you find anomalies in the instrument such as
deformation, breaks, substance leaks, absence of display on the screen, etc
Pay special attention when measuring voltages higher than 20V, since a risk of
electrical shock exists
Only use original accessories
In this manual, and on the instrument, the following symbols are used:
CAUTION: observe the instructions given in this manual; an improper use could
damage the instrument or its components
High voltage danger: electrical shock hazard
Double insulation
DC voltage or current
AC voltage or current
Connection to earth
1.1. PRELIMINARY INSTRUCTIONS
This instrument has been designed for use in an environment with pollution level 2 and
in the environmental conditions specified in § 8.4. Do not use in different environmental
conditions
We recommend following the normal safety rules devised to protect the user from
dangerous currents and the instrument from an incorrect use
The instrument may be used for measuring VOLTAGE in CAT III 1000V DC or CAT IV
300V AC to earth. Do not use on systems exceeding the limit values specified in § 8
The instrument may be used for measuring CURRENT by means of external clamp
transducers
Only original HT accessories guarantee safety standards. They must be in good
conditions and replaced with identical models, when necessary
Before connecting the measuring cables to the circuit being measured, check that the
instrument has been correctly set

MPP300
EN - 3
1.2. DURING USE
Please carefully read the following recommendations and instructions:
CAUTION
Failure to comply with the notes and/or instructions may damage the
instrument and/or its components or be a source of danger for the
operator
The red flashing “POWER” LED indicates that the internal rechargeable
batteries are almost flat. In this case, connect the external power supply
as described in § 7.2
The IDC1, IDC2, IDC3 input connectors are type 4-pole type. Use only
clamps with 4-pin output connector or interpose adapter ACON3F4M
between the clamp output connector and the instrument input.
The instrument maintains the data stored also in case of flat battery
The instrument is particularly sensitive to ESD nearby and on the USB
port while it is operating; we recommend connecting the cables to the USB
port when the instrument is off
1.3. AFTER USE
When measurements are completed, turn off the instrument by pressing and holding the
ON/OFF key for some seconds. If the instrument is not to be used for a long time, please
follow the instructions given in § 3.4
1.4. DEFINITION OF MEASUREMENT (OVERVOLTAGE) CATEGORY
Standard “IEC/EN61010-1: Safety requirements for electrical equipment for measurement,
control and laboratory use, Part 1: General requirements” defines what measurement
category, commonly called overvoltage category, is. § 6.7.4: Measured circuits, reads:
Circuits are divided into the following measurement categories:
Measurement category IV is for measurements performed at the source of the low-
voltage installation
Examples are electricity meters and measurements on primary overcurrent protection
devices and ripple control units
Measurement category III is for measurements performed on installations inside
buildings
Examples are measurements on distribution boards, circuit breakers, wiring, including
cables, bus-bars, junction boxes, switches, socket-outlets in the fixed installation, and
equipment for industrial use and some other equipment, for example, stationary motors
with permanent connection to fixed installation
Measurement category II is for measurements performed on circuits directly
connected to the low-voltage installation
Examples are measurements on household appliances, portable tools and similar
equipment
Measurement category I is for measurements performed on circuits not directly
connected to MAINS
Examples are measurements on circuits not derived from MAINS, and specially
protected (internal) MAINS-derived circuits. In the latter case, transient stresses are
variable; for that reason, the standard requires that the transient withstand capability of
the equipment is made known to the user

MPP300
EN - 4
2. GENERAL DESCRIPTION
2.1. INTRODUCTION
Dear Customer, thank you for choosing one of the instruments in our range. If used
according to the instructions given in this manual, the instrument you have just purchased
will guarantee accurate and reliable measures. The instrument is designed to guarantee
maximum safety, thanks to a newly conceived development, which ensures double
insulation and enables the instrument to reach overvoltage category CAT III 1000V DC
and CAT IV 300V AC (to earth)
The instrument has been designed as an accessory for an instrument, hereafter called the
MASTER instrument (see par. 4.3), for the purpose of carrying out testing operations on
single-phase and three-phase PV systems.
Together with a MASTER instrument, MPP300 is the ideal solution for testing and
analyzing the possible problems linked to possible low efficiency values of photovoltaic
systems
2.2. INSTRUMENT FUNCTIONS
The instrument has the following features:
Measurement of 3 DC voltages and currents
Measurement of DC string power and total DC power
Measurement of 3 AC TRMS voltages and currents
Measurement of total AC power
Measurement of irradiation [W/m2] by means of a reference cell connected to unit
SOLAR-02
Measurement of panel and environmental temperature by means of probe PT300N
connected to SOLAR-02
Testing of PV systems with single/multi-MPPT inverter - single/three-phase AC output
Parameter recording of a PV system with 5s to 60min programmable IP
Internal memory for data saving
RF/USB interface for transferring the data to the MASTER instrument

MPP300
EN - 5
3. PREPARATION FOR USE
3.1. INITIAL CHECKS
Before shipping, the instrument has been checked from an electric as well as mechanical
point of view. All possible precautions have been taken so that the instrument is delivered
undamaged. However, we recommend checking it to detect any damage possibly suffered
during transport. In case anomalies are found, immediately contact the dealer.
We also recommend checking that the packaging contains all components indicated in
§ 8.5. In case of discrepancy, please contact the Dealer. In case the instrument should be
returned, please follow the instructions given in § 10.
3.2. INSTRUMENT POWER SUPPLY
The instrument only operates with a Li-ION rechargeable battery (3.7V, 1900mAh) housed
inside the instrument itself. Use the external power supply A0055 provided to recharge the
battery. For indications on the status of the battery, please refer to § 7.2
The instrument maintains the data stored also in case of completely flat battery.
3.3. CALIBRATION
The instrument has the technical specifications described in this manual. Its performance
is guaranteed for 12 months from the date of purchase.
3.4. STORAGE
In order to guarantee precise measurement, after a long storage time under extreme
environmental conditions, wait for the instrument to come back to normal condition (see
the environmental specifications contained in § 8.4).

MPP300
EN - 6
4. OVERVIEW
4.1. INSTRUMENT DESCRIPTION
CAPTION:
1. DC voltage inputs
2. DC current inputs
3. AC voltage inputs
4. AC current inputs
5. Indication LEDs
6. USB connector (only for
MASTER instruments of Type
2, see § 4.3)
7. ON/OFF key
8. Connector for external supply
Fig. 1: Description of the instrument’s front panel
4.2. DESCRIPTION OF THE INDICATION LEDS
LED name Status Description
POWER GREEN steady
GREEN flashing
RED flashing
MPP300 supplied by external power supply
MPP330 supplied by internal batteries
Batteries of MPP300 almost flat
STATUS
GREEN steady
GREEN flashing
RED flashing
RED steady
MPP300 in synchronization phase before starting recording
MPP300 in recording phase
MPP300 memory full
Internal error of MPP300 (see § 4.3.1 and Message table in the
User Manual of the MASTER instrument)
MASTER GREEN flashing
OFF MPP300 is connecting to the MASTER unit MPP300 is NOT connecting to the MASTER unit
REMOTE GREEN flashing
OFF MPP300 is connecting to unit SOLAR-02 MPP300 is NOT connecting to unit SOLAR-02
Table 1: Description of the indication LEDs on MPP300
4.3. MASTER INSTRUMENT
MPP300 may be controlled only by the following MASTER instruments:
MASTER instrument Instrument type Firmware Fw update
SOLAR I-V 1 (RF connection) 5.02 or higher Canbe carriedoutbytheuser
SOLAR 300N 2 (USB connection) 1.27 or higher Canbe carriedoutbytheuser
Table 2: Characteristics of the MASTER instruments
CAUTION
All controls are sent to the instrument via RF communication (MASTER
instrument of Type 1) or via USB port (MASTER instrument Type 2)
We recommend the user verifies that the software version (Firmware) in
the MASTER instrument to which MPP300 should be connected is
consistent with the indications given in Table 2. This information is present
in the initial screen shown when switching on the MASTER instrument.
The results of the measurements carried out by MPP300 are sent to the
MASTER instrument to which it is connected and shown on the master
instrument’s display. All measures stored in the MASTER instrument’s
memory can be subsequently displayed and can be transferred to a PC

MPP300
EN - 7
4.3.1. Displaying the status of MPP300 by means of MASTER instruments of Type 1
In case the MASTER instrument is near MPP300, it is possible to display the general
parameters and obtain information about a possible error state of MPP300 (STATUS LED
red steady). For a description of the error conditions, please refer to the Message table in
the User Manual of the MASTER instrument
1. Position the cursor onto EFF by using the arrow keys
(,) and confirm with ENTER. The display shows the
screen here to the side, which contains the global
parameters of the system
15/05/10 15:34:26
PRp - - -
Irr - - - W/m2
Pnom 150.0 kW
Tc - - - °C
Te - - - °C
Pdc - - - kW
Pac - - - kW
ndc - - -
nac - - -

GO – start rec
Select
MPP
2. Press the ENTER key. The instrument shows the
following options: MPP300 status, Set PV Plant and Set
Instrument
3. Use the arrow keys (,) to select “MPP300 status” and
confirm with ENTER. The instrument shows the screen
here to the side, which indicates the main general
parameters of the instrument
15/05/10 15:34:26
Power supply Batt
Battery In use
Charge 99%
SOLAR-02 detected SI
Version 1.01
SN 11010030
MPP300 Status
Set .PV plant
Set Instrument
Select
MENU
4.3.2. Displaying the status of MPP300 by means of MASTER instruments of Type 2
In case the MASTER instrument is connected to MPP300 though USB cable, it is possible
to display the general parameters and obtain information about a possible error state of
MPP300 (STATUS LED red steady). For a description of the error conditions, please refer
to the Message table in the User Manual of the MASTER instrument
In GENERAL MENU select the “Instrument informations” icon and press ENTER key. The
herewith screen is shown by the instrument:
12/09/2006 – 16:55:10
INSTRUMENT INFORMATIONS
Model: MPP300
SN: xxxxxxxx
Hw: xx
Fw: 1.xx
Press ESC key (or smart icon ) to back to GENERAL MENU screen.

MPP300
EN - 8
5. SETTINGS ON MASTER INSTRUMENTS
Instructions are given according to the Type of instruments, classified according to Table 2.
Further in this manual, a brief description is provided of the settings of the MASTER
instrument for use together with MPP300. For an exhaustive description of the controls
and functions of the MASTER instrument, please refer to the User Manual of the
instrument itself.
5.1. MASTER INSTRUMENTS OF TYPE 1 - REMOTE UNIT SETTINGS
Turn on the instrument, press the MENU key, position the cursor onto SET by using the
arrow keys (,) and confirm with ENTER. The display shows the screen which lists the
different settings of the instrument
1. Position the cursor onto Remote Unit by using the arrow
keys (,) and confirm with ENTER
2. In parameter “Remote U EFF”, set MPP300
3. Press SAVE to confirm
15/05/10 15:34:26
Remote U EFF MPP300
Remote U I-V NO
Sens. :31.0mV/kW/m2
Al
p
ha : 0.060 %/°C
SAVE to save
SET
5.2. MASTER INSTRUMENTS OF TYPE 2 – REMOTE UNIT SETTINGS
In the GENERAL MENU select ANALYZER SETTINGS, press the F2 key or touch the
“ADVANCED” item on the display. The herewith screens are shown by the meter:
Selection of rem. U. SOLAR-01 Selection of rem. U. SOLAR-02 Selection of rem. U. MPP300
1. By means of the F3 or F4 key (or items MOD(+) or MOD(-) on the display), select the
desired unit SOLAR01 or SOLAR02, MPP300
CAUTION
The selection of remote unit MPP300 automatically disables the “Pyranometer”
field as the sensitivity of the used irradiance probe (pyranometer or reference
cell) should be set inside the internal menu of SOLAR-02 (see user manual of
SOLAR-02). The selection of the type of system MPP-1 or MPP-3 shall
automatically force MPP300 as remote unit type.
2. Press the SAVE or ENTER key (or the smart icon ) to save the selected setting by
confirming with “Ok”. In this way, the settings made will remain valid also after turning
off the instrument.
3. To quit the settings made or to exit without saving, press the ESC key (or the smart
icon ).

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

MPP300
EN - 10
Fig. 3: Connection of MPP300 for testing a three-phase PV system
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 the User
Manual of SOLAR I-V)
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)

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
Nto 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

MPP300
EN - 12
17.The display of SOLAR I-V will show the values of the
general electrical parameters of the system being
measured
In particular, in this screen:
Pdc = General dc power (sum of the string powers)
Pac = ac power (if single-phase) or sum of the ac powers (if
three-phase)
We recommend checking that the values of the electrical
parameters (Pnom, Pdc, Pac) and of the ac performance
(ac) are consistent with the system being measured (e.g.:
ac > 1 is not physically acceptable)
15/05/10 15:34:26
PRp - - -
Irr - - - W/m2
Pnom 3.500 kW
Tc - - - °C
Te - - - °C
Pdc 3.125 kW
Pac 2.960 kW
ndc - - -
nac
0
.
9
5

GO – start rec
Select
MPP
18.On SOLAR I-V, press key () to access the second
screen which contains the values of the output DC
parameters of the strings according to the number of DC
inputs set (see the User Manual of SOLAR I-V)
In particular, in this screen:
Vdcx = dc voltage of string x.
Idcx = dc current of string x.
Pdx = dc power of string x.
We recommend checking that the values of the electrical
parameters (Vdc, Idc, Pdc) are consistent with the system
being measured
15/05/10 15:34:26

Vdc1 460.1 kW
Vdc2 461.4 V
Vdc3 462.5 A
Idc1 2.25 A
Idc2 2.31 A
Idc3 2.21 A
Pdc1 1.035 kW
Pdc2 1.066 kW
Pdc3 1.024 kW

GO – start rec
Select
MPP
19.On SOLAR I-V, press key () to access the third screen
which contains the values of the electrical parameters on
the AC side of the inverter, consistently with the settings
made (see – SOLAR I-V user’s manual, single-phase,
three-phase 4 wires).
In particular, in this screen:
Vacxy = ac voltage between Phase and Neutral (if single-
phase) or between Phases x and y (if three-phase)
Iacx = ac current of phase x
Pacx = ac power of phase x
We recommend checking that the values of the electrical
parameters (Vac, Iac, Pac) are consistent with the system
being measured
15/05/10 15:34:26

Vac12 401.4 V
Vac23 401.1 V
Vac31 400.1 V
Iac1 4.26 A
Iac2 4.26 A
Iac3 4.27 A
Pac1 987 W
Pac2 986 W
Pac3 985 W

GO – start rec
Select
MPP
Example of a screen for
PV systems with three-
phase output
20.Keeping the three instruments near each other (max distance
approx. 1m), press the GO/STOP key on SOLAR I-V to start
testing. Consequently:
The display of SOLAR I-V shows the message “Rec. start
waiting”
The display of SOLAR-02 shows the message “HOLD” and
the time, expressed in seconds, remaining before the
recording is started
On MPP300, the STATUS LED turns on green (not flashing)
15/05/10 15:34:26
PRp - - -
Irr - - - W/m2
Pnom 3.500 kW
Tc - - - °C
Te - - - °C
Pdc 3.125 kW
Pac 2.960 kW
ndc - - -
nac
0
.
9
5

Rec.Start Waiting
Select
MPP

MPP300
EN - 13
21.Upon reaching the instant “00” after pressing the GO/STOP
key, the test is started and the three units are
synchronized with each other. In these conditions:
The display of SOLAR I-V shows the message “rec.
running”
The display of SOLAR-02 shows the message
“Recording…”
On MPP300, the STATUS LED flashes green
15/05/10 15:35:00
PRp - - -
Irr - - - W/m2
Pnom 3.500 kW
Tc - - - °C
Te - - - °C
Pdc 3.125 kW
Pac 2.960 kW
ndc - - -
nac
0
.
9
5
Rec. running
Select
MPP
22.At any time it will be possible to analyze the current
recording status by pressing the MENU key. The following
information will be shown:
starting date and time of recording
the value set for the integration period
the number of periods elapsed from the beginning of the
recording
the remaining memory capacity for recording
Press the ESC key to exit the screen
15/05/10 15:35:00
Start
14/02/00 17:18:00
Period: 5s
IP Number 61
Rec. time 0d 1h
Reg. in corso
Rec running
Select
MPP
23.Now it is possible to bring the unit SOLAR-02 near the PV strings to measure irradiation and
temperature by means of the relevant probes. When the distance between unit SOLAR-02
and MPP300 does not allow the RF connection, on the display of SOLAR-02 the symbol
“” flashes for approx 30s and then disappears. Unit MPP300 steadily searches for the
RF connection with unit SOLAR-02
24.Position the reference cell onto the surface of the PV modules. Please refer to the relevant
User Manual for a correct assembly
25.Put the temperature sensor in contact with the rear side of the panel and fasten it with some
tape; prevent touching it with your fingers (as this could alter the measure)
26.Wait for a few seconds to allow the probes to reach a steady measure and then connect the
irradiation probe to input PYRA/CELL and the temperature probe to input TEMP of unit
SOLAR-02
27.Wait for the message “READY” to appear on the display of SOLAR-02 to indicate that the
unit has detected the data with solar irradiation > minimum threshold set (see the User
Manual of SOLAR I-V)
28.With the message “READY” shown on the display, wait for approximately 1 minute in
order to take a certain number of samples
29.Disconnect the irradiation and temperature probes from unit SOLAR-02 and bring the unit
near unit MPP300. Bring the main unit SOLAR I-V near MPP300 too. The three units
must be near each other (max distance 1m)
30.The main unit SOLAR I-V must be in EFF mode; if no flashing symbol “ ” appears,
press key to activate the RF connection search again
31.Press key on SOLAR-02 to activate the RF connection again. Consequently, the main
unit will show the message “radio connection activated”

MPP300
EN - 14
32.To stop testing, press the GO/STOP key on instrument
SOLAR I-V and confirm with ENTER that you want to stop
recording
33.The display of SOLAR I-V will show the message “DATA
DOWNLOAD” to indicate that the data will be transferred to
the main unit during its various phases
34.After the automatic data transfer phase, the instrument:
Do not show any results if do not exist on the PV
installation a “stable irradiance” condition more than the
minimum irradiance threshold (see see user’s manual of
MASTER instrument) or all PRp values are not valid (PRp
> 1.15).
Display the best performance values if during the
recording, the Irradiance values reached the “stable”
condition and its values were higher than the minimum
irradiance threshold (see user’s manual of MASTER
instrument).
35.Press SAVE to save the results or ESC to exit the screen of
the results and go back to the initial screen
15/05/10 15:35:00

PRp
0
.
82
Irr
9
7
1
W/m2
Pnom 3.500 kW
Tc 45.
1
°C
Te
30
.5 °C
Pdc 3.125 kW
Pac 2.960 kW
ndc 0.86
nac
0
.
9
5
Analysis Result
Select
MPP

MPP300
EN - 15
6.2. PV SYSTEM TESTING FOR INSTRUMENTS OF TYPE 1 (SOLAR 300N)
6.2.1. Testing of PV systems with single/multi-MPPT inverter - single/three-phase AC output
The instrument SOLAR300N, used together with remote units SOLAR-02 and MPP300
(optional), allows carrying out long recordings on PV systems characterized by 1 or more
PV fields (with the same direction and inclination), each connected to an MPPT of the
inverter (see § 9.1) and single-phase or three-phase output. The remote unit MPP300 is
capable of communicating with SOLAR300N via USB cable (to manage data
synchronization and 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. 4: Connection of MPP300 for testing a single-phase PV system
Fig. 5: Connection of MPP300 for testing a three-phase PV system

MPP300
EN - 16
CAUTION
When SOLAR300N 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. SOLAR300N 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 SOLAR300N, 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 parameters of the system being measured and to the value of the
integration period (see SOLAR300N user’s manual).
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. Connect SOLAR300N to the MPP300 unit via the USB cable and bring SOLAR-02 and
MPP300 nearer (max distance approx. 1 m). All instruments must be switched on
(see the User Manuals of SOLAR-2 and MPP300 for further details). The display of
SOLAR300N must show (for 5 seconds) the message “MPP300 connected”.
6. On SOLAR300N, access the GENERAL MENU, select the function View Measures
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:
a. Symbol steady (not flashing) on the display of SOLAR-02
b. MASTER and REMOTE LEDs flashing green on unit MPP300
7. Connect the VDC1(+) and VDC1(-) inputs of the MPP300 unit to the output terminals of
the string, paying attention to the polarity and the colours indicated in Fig. 4 or Fig. 5.
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 SOLAR300N user’s manual).

MPP300
EN - 17
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 SOLAR300N 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 Fig. 4 or Fig. 5.
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 SOLAR300N user’s manual).
12.Connect the VAC1 and Ninputs of unit MPP300 to the Phase and Neutral conductors
respectively, respecting the polarities and the colours indicated in in Fig. 4 or Fig. 5. In
case of three-phase systems in which no Neutral conductor is available, connect input
Nto earth.
13.In case of inverter with three-phase output (see SOLAR300N user’s manual), 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. 4 or Fig. 5. 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 SOLAR300N user’s manual), 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.
17.The display of SOLAR300N will show the values
of the general electrical parameters of the system
being measured.
In particular, in this screen:
Pdc = General dc power (sum of the string powers)
Pac = ac power (if single-phase) or sum of the ac
powers (if three-phase)
We recommend checking that the values of the
electrical parameters (Pnom, Pdc, Pac) and of the ac
performance (ac) are consistent with the system
being measured (e.g.: ac > 1 is not physically
acceptable).

MPP300
EN - 18
18.On SOLAR300N, press key F3 to access the
second screen which contains the values of the
output DC parameters of the strings according to
the number of DC inputs set (see SOLAR300N
user’s manual).
In particular, in this screen:
Vdcx = dc voltage of string x.
Idcx = dc current of string x.
Pdx = dc power of string x.
We recommend checking that the values of the
electrical parameters (Vdc, Idc, Pdc) are consistent
with the system being measured.
Example of a DC screen for PV
systems with 3 MPPTs
19.On SOLAR300N, press key F4 to access the third
screen which contains the values of the electrical
parameters on the AC side of the inverter,
consistently with the settings made (see
SOLAR300N user’s manual - single-phase, three-
phase 4 wires).
In particular, in this screen:
Vacxy = ac voltage between Phase and Neutral (if
single-phase) or between Phases x and y (if three-
phase)
Iacx = ac current of phase x
Pacx = ac power of phase x
We recommend checking that the values of the
electrical parameters (Vac, Iac, Pac) are consistent
with the system being measured.
Example of an AC screen for PV
systems with three-phase
output
20.Keeping the three instruments connected, press the
F1 key on SOLAR300N to start recording.
Consequently:
a. The display of SOLAR300N shows the icon .
The display of SOLAR-02 shows the message
“HOLD” and the time, expressed in seconds,
remaining before the recording is started
b. On MPP300, the STATUS LED turns on green (not
flashing)
21.Upon reaching the instant “00” after pressing the F1
key, the test is started and the three units are
synchronized with each other. In these conditions:
a. The display of SOLAR300N shows the icon .
b. The display of SOLAR-02 shows the message
“Recording…”
c. On MPP300, the STATUS LED flashes green