Each Fluke product is warranted to be free from defects in material and workmanship under normal use
and service. The warranty period is 3 years and begins on the date of shipment. Parts, product repairs,
and services are warranted for 90 days. This warranty extends only to the original buyer or end-user
customer of a Fluke authorized reseller, and does not apply to fuses, disposable batteries, or to any
product which, in Fluke's opinion, has been misused, altered, neglected, contaminated, or damaged by
accident or abnormal conditions of operation or handling. Fluke warrants that software will operate
substantially in accordance with its functional specifications for 90 days and that it has been properly
recorded on non-defective media. Fluke does not warrant that software will be error free or operate
without interruption.
Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers
only but have no authority to extend a greater or different warranty on behalf of Fluke. Warranty support is
available only if product is purchased through a Fluke authorized sales outlet or Buyer has paid the
applicable international price. Fluke reserves the right to invoice Buyer for importation costs of repair/
replacement parts when product purchased in one country is submitted for repair in another country.
Fluke's warranty obligation is limited, at Fluke's option, to refund of the purchase price, free of charge
repair, or replacement of a defective product which is returned to a Fluke authorized service center within
the warranty period.
To obtain warranty service, contact your nearest Fluke authorized service center to obtain return
authorization information, then send the product to that service center, with a description of the difficulty,
postage and insurance prepaid (FOB Destination). Fluke assumes no risk for damage in transit. Following
warranty repair, the product will be returned to Buyer, transportation prepaid (FOB Destination). If Fluke
determines that failure was caused by neglect, misuse, contamination, alteration, accident, or abnormal
condition of operation or handling, including overvoltage failures caused by use outside the product’s
specified rating, or normal wear and tear of mechanical components, Fluke will provide an estimate of
repair costs and obtain authorization before commencing the work. Following repair, the product will be
returned to the Buyer transportation prepaid and the Buyer will be billed for the repair and return
transportation charges (FOB Shipping Point).
THIS WARRANTY IS BUYER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. FLUKE SHALL NOT BE LIABLE FOR ANY
SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF
DATA, ARISING FROM ANY CAUSE OR THEORY.
Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or
limitation of incidental or consequential damages, the limitations and exclusions of this warranty may not
apply to every buyer. If any provision of this Warranty is held invalid or unenforceable by a court or other
decision-maker of competent jurisdiction, such holding will not affect the validity or enforceability of any
other provision.
The Fluke SMFT-1000 Multifunction PV Analyzer (the PV Analyzer or the Product) is a batteryoperated analyzer for installation testing and periodic inspection of mains-coupled
photovoltaic (PV) systems. Ta b l e 1 is a list of the main functions.
Tab l e 1 . Fu n ct i on s
FunctionIncludes
Visual inspection checklist
Category 1 test
regime
Functional test
Protective conductor resistance (R
) measurement with a testing
LO
current ≥200 mA (@2 Ω)
Polarity check with automatic display of the voltage polarity and
acoustic/visual warning for wrong polarity
Open-circuit voltage (V
) measurement at the PV model/string with
OC
up to 1000 V dc
Short-circuit (I
) current measurement at the PV model/string with up
SC
to 20 A dc
Insulating resistance (R
) measurement with a testing voltage of
INS
50 V, 100 V, 250 V, 500 V, 1000 V
Blocking diode measurement (V
) with Method 1 and Method 2
BD
(IEC 62446-1)
Bypass diode measurement of panel when covered or in darkness
Surge protection device (SPD)
Power measurements on DC and AC side to check efficiency
Voltage DC/AC measurement
Current DC/AC measurement with clamp adapter i100
Functional test checklist
Category 2 test
regime
Solar panel string I-V curve test that includes Solar PV I-V curve
tracing and associated software for analysis, reporting, and
certification and includes I-V curve analysis and reporting features
Long-term monitoring of insulation errors (non-direct wet insulation test) and 24-hour
periodical measurement of R
(adjustable time period)
INS
Computer software - download, upload, review, analyze, and print test results
Communication with remote sensor (solar irradiation, inclination, temperature)
identifies hazardous conditions and procedures that are dangerous to the user. A
Caution identifies conditions and procedures that can cause damage to the Product or the
equipment under test.
Specifications
Maximum voltage between any Terminal
and Earth Ground............................................ 1000 V dc
Maximum differential voltage between Red
and Blue terminals.......................................... 700 V ac
Size (L x W x H) ................................................. 10.0 cm x 25.0 cm x 12.5 cm (3.8 in x 9.8 in x 4.9 in)
Weight with batteries.................................... 1.4 kg (3.09 lb)
Battery................................................................. 6 x AA Alkaline IEC LR6
Battery Life........................................................ up to 1000 measurements
Fuse ...................................................................... F2: FF 630 mA, 1000 V, IR 30 kA
6.3 x 32 mm
F1: gPV DC 1000 V, 20 A, IR 30 kA (L/R= 2 ms), 10 mm x 38 mm
Te m p e r a t u r e
Operating ......................................................... 0 °C to 50 °C (32 °F to 122 °F)
Storage ............................................................. -30 °C to 60 °C (-22 °F to 140 °F)
batteries removed
Relative Humidity............................................ up to 80 %
Altitude
Operating ......................................................... 2000 m
Storage ............................................................. 12 000 m
0.00 MΩ to 99.99 MΩ0.20 MΩ to 99.99 MΩ0.01 MΩ± (5 % + 5 Digit)
100.0 MΩ to 199.9 MΩ100.0 MΩ to 199.9 MΩ0.1 MΩ± (10 % + 5 Digit)
200 MΩ to 999 MΩ200 MΩ to 999 MΩ1 MΩ± (20 % + 5 Digit)
Test voltage @ no load
Te s t vo lt ag e @ ≥1 mA
Te s ti n g c u rre nt
Live circuit detection
Maximum capacitive
load
The number of insulation tests with a new set of batteries is >900 at 1000V / 1 MΩ.
INS
50 V / 100 V / 250 V up to 199.9 MΩ
500 V / 1000 V up to 999 MΩ
250 V @ 250 kΩ
1000 V @ 1 MΩ
Min. 1 mA (@ 250 kΩ / 500 kΩ / 1 MΩ)
Max. 1.5 mA (short circuit)
Inhibits test if terminal voltage >15 V ac (typical) detected prior to initiation of
test.
Operable with up to 2 μF at 1MΩ
Note
1 V0 % to + 20 %
1 V0 % to + 10 %500 V @ 500 kΩ
Blocking Diode Check (VBD)
Display RangeMeasurement RangeResolutionAccuracy
0.00 V dc to 6.00 V dc0.50 V dc to 6.00 V dc0.01 V dc± (5 % + 10 Digit)
Live circuit detection
Inhibits test if terminal voltage >50 V ac/dc (typical) detected prior to initiation
of test.
Surge Protection Devices (SPD)
Display RangeMeasurement RangeResolutionAccuracy
0 V dc to 1000 V dc50 V dc to 1000 V dc1 V dc± (10 % + 5 Digit)
Live circuit detection
Inhibits test if terminal voltage >50 V ac/dc (typical) detected prior to initiation
of test.
True-rms AC V, DC V, AC A, DC A
The PV Analyzer measures both ac and dc signal components (voltage or current) and displays AC+DC
(rms) value combined. The display of ac or dc unit is dependent on if there is zero crossing of the signal.
International .................................................... IEC 61326-1: Portable Electromagnetic Environment,
CISPR 11: Group 1, Class A
Group 1: Equipment has intentionally generated and/or uses conductively-coupled radio
frequency energy that is necessary for the internal function of the equipment itself.
Class A: Equipment is suitable for use in all establishments other than domestic and those directly
connected to a low-voltage power supply network that supplies buildings used for domestic
purposes. There may be potential difficulties in ensuring electromagnetic compatibility in other
environments due to conducted and radiated disturbances.
Caution: This equipment is not intended for use in residential environments and may not provide
adequate protection to radio reception in such environments.
Korea (KCC) ..................................................... Class A Equipment (Industrial Broadcasting & Communication
Equipment)
Class A: Equipment meets requirements for industrial electromagnetic wave equipment and the
seller or user should take notice of it. This equipment is intended for use in business
environments and not to be used in homes.
USA (FCC)......................................................... 47 CFR 15 subpart B.
Intentional Radiators: This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) This device may not cause harmful interference, and (2) this
device must accept any interference received, including interference that may cause undesired
operation. (15.19). Changes or modifications not expressly approved by Fluke could void the
user's authority to operate the equipment. (15.21)
Wireless Radio Module
Frequency Range .......................................... 2.402 GHz to 2.480 GHz
Hereby, Fluke declares that the radio equipment contained in this Product is in compliance with Directive
2014/53/EU. The full text of the EU declaration is available
Test leads are connected and stay in place (Keep the Leads) throughout the test. Ta b l e 6
shows the input terminals.
XW Warning
To prevent possible electrical shock, fire, or personal injury, do not use test leads
in CAT III or CAT IV environments without the protective cap installed. The
protective cap decreases the exposed probe metal to <4 mm. This decreases the
possibility of arc flash from short circuits.
Tab le 6 . Ter m in a ls
2
1
4
2
ItemDescription
The IR (infrared) port allows you to connect the Tester to a computer and download the test
data with TruTest™ Data Management Software documentation. With this software, you can
collect, organize, and display the test data. See Download Test Results for additional
information on using the IR port.
When the Analyzer detects error conditions, the display shows W and an error code. See
Ta b l e 7 . These error conditions disable or stop the test.
Tip: Push INFO for instructions about the error message.
Tab le 7 . E r ror C od e s
Error
Code
1.1
1.2
1.3
1.4
1.5
1.6
1.7
2.1
Test TypeDescription
Pre-test
Automatic
Pre-test
Automatic
Pre-test
Automatic
Pre-test
Automatic
Pre-test
Automatic
Pre-test
Automatic
Pre-test
Automatic
Automatic
Te s t
Irregular voltage detected between inputs green and yellow
V ≥50.0 V
Irregular voltage detected between inputs red and blue
V ≥1020 V, V
Irregular voltage detected between inputs blue and yellow
V ≥30.0 V
Short circuit current overload
≥20.5 A
I
SC
Irregular voltage detected between inputs red and green (or blue and
green)
V ≥50.0 V
Irregular voltage detected between inputs red and blue
V ≥1020 V DC, ≥720 V AC, MINUS (when V ≥5.0 V)
Irregular voltage detected between inputs green and yellow
V ≥720.0 V
Overheating (over-temperature)
Polarity: MINUS or AC (when V ≥5.0 V)
AB
3.1
4.1
4.2
4.3
Automatic
Te s t
Te s t
Post-test
Te s t
Post-test
Te s t
Post-test
Memory overload
Fuse F1 Failed
Internal test indicates that the safety fuse (20 A) is open. F1 fuse
replacement must be done by a qualified technician.
Fuse F2 Failed
Internal test indicates that the safety fuse (0.63 A) is open and needs
to be replaced to do this measurement. See Fuse Replacement.
Fuse F1 and F2 Failed
Internal test indicates that both safety fuses (20 A and 0.63 A) are
open and need to be replaced to do this measurement. F1 fuse
replacement must be done by a qualified technician.
To prevent possible electrical shock, fire, or personal injury, do not use in CAT III
or CAT IV environments without the protective cap installed. The protective cap
decreases the exposed probe metal to <4 mm. This decreases the possibility of
arc flash from short circuits.
When you measure the Continuity (R
) of equipotential bonding conductors and lightning
LO
protection conductor wiring, the test leads have a small amount of inherent resistance that can
affect a measurement. Before you do a continuity test, use the zero adapter to compensate
for, or zero, the test leads. See Figure 1.
Use this kit for safety and performance analysis of solar systems according to IEC 62446-1.
The kit contains the SMFT-1000 PV Analyzer (PV Analyzer) and the IRR2-BT Irradiance Meter
(Irradiance Meter).
The PV Analyzer provides safety and performance measurements of the solar system.
The Irradiance Meter provides auxiliary data of sun irradiance and solar panel temperature.
This data complements the IV Curve Solar Panel performance measurements on the PV
Analyzer. The IRR2-BT sends the data to the PV Analyzer wirelessly. If wireless connection is
interrupted for any reason, the Irradiance Meter automatically records the data that is later
transferred when the connection is reestablished. Both devices have synchronized clocks to
properly match the data.
Note
Before taking IV Curve performance measurements, synchronize the PV Analyzer and
Irradiance Meter via wireless connection. See Pair PV Analyzer to the Irradiance Meter.
To power on the PV Analyzer:
1. Push
2. Push
for 1 s. to turn on the PV Analyzer.
The displays shows a startup screen with the firmware version.
for 2 s. to turn off the PV Analyzer.
Pair PV Analyzer to the Irradiance Meter
For first time use, you must pair the PV Analyzer Analyzer with the Irradiance Meter:
1. Turn on the PV Analyzer and the Irradiance Meter.
2. Make sure the PV Analyzer and the Irradiance Meter are within the wireless range (<50 m) of
each other.
3. Turn the rotary dial to MENU.
4. Use
5. Push
6. Use
7. Push
8. Follow the on-screen directions on the PV Analyzer to pair the devices.
to highlight Device Settings.
to open the Device Settings menu.
to highlight Irradiance Meter Pairing.
.
shows on the PV Analyzer display to indicate that the PV Analyzer and Irradiance Meter
are connected.
After the initial setup, the PV Analyzer pairs with the IRR2-BT when you turn on both
devices and are within the wireless range (<50 m).
For IV Curve measurements, synchronize the PV Analyzer with the IRR2-BT at the start of the
work day:
1. Turn on the PV Analyzer and the Irradiance Meter.
2. Make sure the PV Analyzer and the Irradiance Meter are within the wireless range (<50 m) of
each other.
3. On the PV Analyzer, turn the rotary switch to I-V CURVE.
4. Press
5. Follow the on-screen directions on the PV Analyzer to synchronize both devices.
.
shows on the PV Analyzer display to indicate that the PV Analyzer and the Irradiance
Meter are connected.
During synchronization, the PV Analyzer matches all the data from the Irradiance Meter to the
recordings on the PV Analyzer from the previous sessions. The real-time clocks on both
devices synchronize and the Irradiance Meter clears its memory. The Irradiance Meter
continuously records data for up to 17 hours.
An option to manually enter irradiance and temperature measurements is available. For more
information, see I-V Curve Test.
Note
If the Irradiance Meter is installed on the panel, move the PV Analyzer within the
wireless range.
IEC 62446-1 Category 1 Tests
Visual Inspection
IEC regulations require a visual inspection of the Solar System. The PV Analyzer provides a
checklist with each task and then records and saves the results of the visual inspection to the
internal memory. All results can be downloaded to the PC software and used for final reports.
To d o a v i su a l in sp e c t io n:
1. Turn on the PV Analyzer.
2. Turn the rotary switch to VISUAL and follow the on-screen prompts.
3. If a scroll bar shows on the right side of the display, use
the checklist.
The PV Analyzer measures protective conductor resistance () with a test current ≥200 mA
(@2 Ω) for:
Earthing and Equipotential Bonding Conductors to IEC 62446-1 Clause 6.1
Lightning Protection System (LPS)
Grounding System
Resistance of Earthing and Equipotential Bonding Conductors
To measure the resistance of earthing and equipotential bonding conductors:
1. Turn the rotary switch to
2. Use
3. Push
4. Connect the green test lead to the central PE connector / ground.
5. Connect the yellow test lead to the measurement point.
6. Push
to select Equipotential Bonding.
to select One Shot (default mode) and follow the on-screen prompts.
This could be the metal frame of the module or the rails of the solar mounting system.
ether on the PV Analyzer or on the Remote Probe.
In this mode the PV Analyzer does a short measurement (R
measurement (R
The PV Analyzer shows both results when the measurement is complete and selects the
highest measurement (worst) as the main result. Based on the chosen limit, all three results
are determined as PASS or FAIL.
The PV Analyzer also shows the value of the test current applied during the resistance test
).
(I
RLO
-) with reversed polarity.
LO
.
+) followed by a second short
LO
Lightning Protection Conductor Wiring
To measure resistance in Lightning Protection System (LPS):
to select One Shot (default mode) and follow the on-screen prompts.
In this mode the PV Analyzer does a short measurement (R
measurement (R
measurement is complete and selects the highest measurement (worst) as the main result.
Based on the chosen limit, all three results are determined as PASS or FAIL.
) with reversed polarity. The PV Analyzer shows both results when the
LO-
www.GlobalTestSupply.com
) followed by a second short
LO+
Grounding System
To troubleshoot the grounding system with the R
Multifunction PV Analyzer
Continuous Measurement method:
LO
Te s t S et u p
1. Push
for R+ Positive or for R- Negative and follow the on-screen prompts.
Polarity Test
The polarity test verifies to IEC 62446-1 Clause 6.2 that the positive and negative wires are
correctly connected to the solar system combiner box, inverter, or switch gear.
XW Warning
To prevent personal injury or damage to the system, all connections must use the
correct polarity.
To t es t p o l a ri t y :
1. Turn the rotary switch to -/+ POLARITY.
2. Connect the red test lead to the positive connector of the PV string and the blue test lead
to the negative connector of the PV string.
Tip: Push
3. Follow the on-screen prompts.
The upper display shows the actual voltage connected to the test leads. For voltages >5 V
the PV Analyzer determines the measurements as
PAS S and all negative voltages as FAIL.
to see the connection diagram.
or . All positive voltage show as
If ac voltage is detected, a warning shows on the display.
PV String Combiner Box
This test procedure verifies to IEC 62446-1 Clause 6.3. Do this test before any string fuses or
connectors are connected for the first time:
Connect all negative fuses or connectors so strings share a common negative bus.
Do not connect any positive fuses or connectors.
Measure the open circuit voltage of the first string, positive (red test lead) to negative (blue
test lead), and assure that it is an expected value.
Continue with subsequent strings, positive to negative, and assure that it is the expected
value and do not differ more than ±15 V from the strings previously measured.
Open circuit voltage measurement and circuit current test (short circuit test or operational).
Open circuit voltage measurement (VOC)
Open circuit voltage (VOC) measurement to IEC 62446-1 Clause 6.4. This test checks that
module strings are correctly wired and that the expected number of modules are connected in
series within the string. For strings connected in series, the measured voltage should be a sum
of the voltages of individual solar panels in the string. This test can also be also used to verify
open voltage of the individual panel.
Circuit current test - short circuit test (ISC)
The PV string circuit current test to IEC 62446-1 Clause 6.5.2 is a short-current measurement
test to verify the correct operational characteristics of the system and that no major faults are
within the PV array wiring. These tests are not to be taken as a measure of module / array
performance. Compare the results of the short-current measurement with solar panel
specifications. The PV Analyzer does all calculations automatically if solar panel specifications
are linked and Irradiance/Temperature measurements are transferred from the Irradiance
Meter.
Operational test method
Alternative test method for ISC (see IEC 62446-1 Clause 6.5.3).
To t es t :
1. Download the panel specifications.
2. Select PV model.
3. Enter the number of modules for each string.
4. Install Irradiance Meter at the solar panel to test.
5. Turn the rotary switch to V
6. Connect the red test lead to positive connector of string and the blue test lead to negative
connector of string.
Tip: Push
7. Follow the on-screen prompts.
The PV Analyzer determines the results for open circuit voltage measurement and short
circuit test as PASS or FAIL based on the chosen PV model panel data and number of
modules.
The VOC is a test to IEC 62446-1 Clause 6.4 for the maximum voltage that the solar panel
produces in standard test conditions. The I
maximum current that the solar panel produces in standard test conditions.
To t es t:
1. Install the Irradiance Meter at the solar panel to test.
is a test to IEC 62446-1 Clause 6.5.2 for the
SC
2. Turn the rotary switch on the PV Analyzer to the V
3. Set the limit for V
based on data from Irradiance Meter and PV model.
OC
OC/ISC
position.
STC calculation limits: calculated from irradiance and nominal values.
4. Set the limit for I
based on data from Irradiance Meter and PV model.
SC
STC calculation limits: calculated from irradiance and nominal values.
Irr & Tcell data from the Irradiance Meter shows on the display.
5. Connect the red test lead to positive connector of string and the blue test lead to negative
connector of string.
Tip: Push
The V
to see a connection diagram.
measurement shows on the display after you connect the test leads.
OC
Note
If the PV Analyzer detects reverse polarity, you will hear an audible beep and the
display shows a warning for a failed test due to a negative measurement.
6. Push
to start the I
measurement.
SC
The V
and ISC results show on the display with a Pass/Fail icon based on the limit from the
OC
Irradiance Meter.
7. Push
to save the results to memory.
A confirmation message with ID number shows on the display and then returns to the test
screen.
When the Irradiance Meter is not connected, no limits are available and no irradiance or
temperature data shows on the display.
To take a measurement:
1. Connect the test leads from the PV Analyzer to the solar panel.
Tip: Push
The VOC measurement shows on the display after you connect the test leads. The Pass/Fail
icons do not show in this configuration.
2. Push
The V
3. Push
A confirmation message with ID number shows on the display and then returns to the test
screen.
to see a connection diagram.
to start the I
and ISC results show on the display.
OC
measurement.
SC
to save the results to memory.
Paired with Irradiance Meter Only
When the Irradiance Meter is connected and a PV model is not selected, no limits are available.
The irradiance and temperature data from the Irradiance Meter shows on the display.
To take a measurement:
1. Connect the test leads from the PV Analyzer to the solar panel. The V
automatically shows on the display.
Tip: Push
to see a connection diagram.
measurement
OC
The V
data from the Irradiance Meter shows on the display. The Pass/Fail icons do not show in
this configuration.
2. Push
The V
3. Push
A confirmation message with ID number shows on the display and then returns to the test
screen.
22
measurement shows on the display after you connect the test leads. Irr & Tcell
Yo u c a n ta ke a q u i ck VOC/ISC measurement without connecting the Irradiance Meter or
PV model. Pass/Fail limits or Irradiance data do not show with this type of measurement.
To take a measurement:
1. Turn the rotary switch on the PV Analyzer to V
OC/ISC
.
2. Connect the test leads to the solar panel. The V
measurement automatically shows on
OC
the display.
Tip: Push
to see a connection diagram.
Voltage symbol is on when voltage is ≥50 V.
3. Push
to start the I
The V
and ISC results show on the display. The Pass/Fail icons do not show in this
OC
measurement.
SC
configuration.
4. Push
to save the results to memory.
A confirmation message with ID number shows on the display and then returns to the test
screen.
VOC/Operational Current Measurement
Operational current as alternative method for ISC as required by IEC 62446-1 Clause 6.5.3.
To take a measurement:
1. Connect the PV string to the inverter and switch the system to on and normal operation
mode (inverter must be at maximum power point).
It is useful to connect two Y-connectors in between so you can measure the string voltage
in parallel.
5. Connect the Clamp and make sure the current flow/polarity matches with the arrow on the
6. Push
to start the V
The V
Meter is connected, the Pass/Fail icons show on the display. The Measure V
are grayed-out with a checkmark to indicate that the measurement is done. The Measure
Operational Current instructions become enabled/brighter.
Clamp.
Tip: Push
measurement shows on the display. If the PV model is selected and the Irradiance
OC
to see a connection diagram.
to start the Operational Current measurement.
measurement.
OC
instructions
OC
Power AC/DC and Function Tests
Tests the power output from the PV system to make sure that the dc power produced by the
panels is inverted properly into ac power as required by IEC 62446-1 Clause 6.6.
Single Phase Inverter Performance Check
Measure the dc power, then ac power, then compare efficiency.
To make a dc measurement:
1. Turn the rotary switch on the PV Analyzer to FUNC./P
AC/DC
.
The display shows power in the blank state and is ready to compare the dc and ac
measurements.
2. Push
3. Connect the PV string to the inverter and switch the system to on and normal operation
4. Connect the red test lead in parallel to the positive connector of the PV string and the blue
5. Connect the Clamp and make sure the current flow/polarity matches with the arrow on the
6. Push
7. Push
to set the Efficiency Factor Limit.
mode (the inverter has to be at maximum power point).
test lead in parallel to the negative connector of the PV string to the solar panel.
Clamp.
Tip: Push
to see a connection diagram.
.
to hold the dc measurements.
The blue column header indicates that the dc measurements are on hold.
Mode is a test for the resistance of the insulation between the ground and the PV
INS
INS
)
Array as required by IEC 62446-1 Clause 6.7. Repeat this test, as a minimum, for each PV array
or sub-array. You can also test individual strings if required.
Test Method 1 (Keep the Leads)
This test is between the PV Array negative and earth followed by a test between the PV Array
positive and earth. For this test, the connections do not change (Keep the Leads option).
To t es t :
1. Turn the rotary switch on the PV Analyzer to R
2. Connect the test leads to the solar panel.
Tip: Push
to see a connection diagram.
If ground-point and frames are bonded to earth point on site:
a. Connect the green test lead to ground.
b. Connect the red test lead to positive terminal on the PV Array.
c. Connect the blue test lead to negative terminal on the PV Array.
OR
INS
.
If ground-point and frames are not bonded to earth point on site (protection class II of
installation):
a. Connect the green test lead to PV Array frame.
b. Connect the red test lead to positive terminal on the PV Array.
c. Connect the blue test lead to negative terminal on the PV Array.
3. Use the
to select the nominal test voltage (V
selection=50/100/250/500/1000 V).
N
This value will trigger the limit values.
4. After leads are configured, push
>1 s. to start the R
(1) measurement.
INS
The dashes blink during the measurement calculation and then the test results show on the
display:
R
R
R
V
V
: lowest number of R
INS
+: insulation resistance PV+ to ground
INS
-: insulation resistance PV- to ground
INS
+: applied test voltage during the insulation test (PV+ to ground)
INS
-: applied test voltage during the insulation test (PV- to ground)
A confirmation message with ID number shows on the display and then returns to the test
screen.
If the resistance is outside an acceptable threshold from the R
Continuous test to find the exact location on the insulation where the resistance is
failing. See Continuous Measurement.
and a short beep noise indicates the test passed when the results are greater
and multiple beeps indicates the test failed when the results are less than the
to save the results to memory.
Note
test (1 or 2), use the
INS
Test Method 2 (Default)
The default Test Method 2 is a test between earth and the short-circuited array for a positive
and then negative measurement. This method also uses the Keep the Leads option.
1. Turn the rotary switch on the PV Analyzer to R
2. Use
to select the nominal test voltage (V
.
INS
selection=50/100/250/500/1000 V).
N
This value will trigger the limit setting.
3. Connect the test leads to the PV Array.
Tip: Push
If ground-point and frames are bonded to earth point on site:
a. Connect the green test lead from green socket to ground.
b. Connect the red test lead from red socket to positive terminal on the PV Array.
c. Connect the blue test lead from blue socket to negative terminal on the PV Array.
OR
If ground-point and frames are not bonded to earth point on site (protection class II of
installation):
a. Connect the green test lead from green socket to PV Array frame.
b. Connect the red test lead from red socket to positive terminal on the PV Array.
c. Connect the blue test lead from blue socket to negative terminal on the PV Array.
The dashes show during the measurement calculation and then the test results show on
the display:
Live Results: measurement results refresh every second.
Green check mark appears when result is under the limit.
5. Push
6. Push
7. Move test leads up and down the cable until you find the resistance issue:
8. Push
OR
9. Connect to the next test point (not necessary to clear if you do not save) or proceed to the
>1 s. at any time to pause and hold the measurement on the screen.
>1 s. again to resume measurement.
shows on the display next to measured resistance that is below the limit.
multiple beeps indicate the test failed.
to save the results to memory.
A confirmation message with ID number shows on the display and then returns to the test
screen.
next test.
Wet Insulation Resistance Test
The wet insulation resistance test meets IEC 62446-1 Clause 8.3 requirements and is best
used as a fault-finding exercise. This resistance test evaluates the PV Array electrical
insulation in wet operating conditions. The test simulates rain or dew on the array and wiring
and then verifies that moisture will not enter active portions of the array electrical circuitry
where it may enhance corrosion, cause ground faults, or pose an electrical safety hazard to
personnel or equipment. This test is especially effective for finding above ground defects such
as wiring damage, inadequately secured junction box covers, and other similar installation
issues. It also may be used to detect manufacturing and design flaws including polymer
substrate punctures, cracked junction boxes, inadequately sealed diode cases, and improper
(indoor rated) connectors.
A wet insulation test would be implemented when the results of a dry test are questionable or
where insulation faults due to installation or manufacturing defects are suspected.
The test is applied to a whole array or on larger systems to select parts such as components or
sub-sections of the array. Where only parts of the array are being tested, these are selected
due to a known or suspected problem identified during other tests. In some circumstances, the
wet insulation test may be requested on a sample portion of the array.
Use the same test sequence in Test Method 1 (Keep the Leads) or Te st M e tho d 2 (De fa u l t) .
VOC is a test for the maximum voltage that the solar panel can produce under standard test
conditions as required by IEC 62446-1 Clause 7.2. I
the solar panels can produce under standard test conditions.
To m ea s ur e:
1. Turn the rotary switch on the PV Analyzer to I-V Curve.
The I-V Curve Table shows on the display and indicates if the PV Analyzer is connected to
the Irradiance Meter or PV model.
If not connected:
is a test for the maximum current that
SC
a. Push
b. Push
When connected, the I-V Curve Table shows:
Irradiance live reading from the Irradiance Meter
Cell Temperature live reading from the Irradiance Meter
Nominal Values based on the PV model
2. Push
The I-V Curve Graph shows:
Nominal Curve based on data from the PV model
Area Curve shows the range of the min-to-max values of the Nominal Curve based on
3. Connect the red test lead to the positive connector of the PV Array and the blue test lead
to the negative connector of the PV Array.
Tip: Push
IRR Meter to pair the Irradiance Meter with the PV Analyzer. For more
information, see Pair PV Analyzer to the Irradiance Meter.
PV Model to select the PV model from the database.
to view the I-V Curve Graph.
the Nominal values
±5 % (Pass Criteria = 5 %)
to see a connection diagram.
4. Attach the Irradiance Meter to the panel with the bracket.
to start the measurement and create an I-V curve.
The display shows a progress bar.
to cancel the test.
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Multifunction PV Analyzer
Te s t S et u p
Note
A warning shows on the display if the PV Analyzer detects reverse polarity at the start
of the test. Push
When the test is complete, the test results show in the I-V Curve Table:
STC column shows values
Pass/Fail indicators show for each row
MEAS (measured) column shows values
to see a connection diagram.
7. Push
8. Use
9. Push
to view a Graph display the of measured curve and STC curve on top of the NOM
area curve.
to toggle between the two table and graph views:
Advanced Table View with an additional column that shows the measured values
Advanced Graph View shows the measured values as the black line
to save the results to memory.
A confirmation message with ID number shows on the display and then returns to the test
screen with blank STC and MEAS data.
Note
A question-mark shows on the PV model tab as a reminder to update the PV model
data if necessary.
Additional Tests
Diode tests are available to meet IEC 62446-1 Clause 8.2 requirements.
Bypass Diode Test
Bypass Diodes prevent the current flowing from good, well-exposed-to-sunlight solar cells
overheating and burning out weaker or partially shaded solar cells by providing a current path
around the bad cell.
To s et :
1. Turn the rotary switch on the PV Analyzer to .
The display shows the Bypass Diode test mode. Push
does not show.
to set the pass/fail limit for the bypass diode voltage measurement.
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if the Bypass Diode test mode
33
SMFT-1000
Users Manual
To set limit:
a. Use to highlight the options.
b. Push
c.Push
d. Push
e.Use
f.Use
g. Push
3. Connect the test leads from the PV Analyzer to the bypass diode.
Tip: Push
a. Connect green test lead from the green socket to the positive anode.
b. Connect yellow test lead from the yellow socket to the negative cathode.
For this test the modules should not generate any voltage or power. The solar
panel (DUT) must be completely shaded or in darkness.
to select the highlighted option and edit on new screen.
to save the limit and return to the previous Diode Test.
to manually enter a bypass diode limit.
and to select the digit to edit.
to change the value.
(Back) to return to the Set Limit display.
to see a connection diagram.
W Caution
4. Push
to start the measurement.
When the measurement is complete, the display shows:
measured voltage of bypass diode
measured current of bypass diode
Passed:
Failed:
preset limits.
This test checks that the voltage drop of the diode is within the expected range (limit).
If the voltage drop is too low the diode is shorted, if the voltage is “OL” then the diode
is open.
and a short beep indicates the test passed when greater than the preset limits.
and multiple beeps (at a lower frequency) indicates the test failed according to
A confirmation message with ID number shows on the display and then returns to the test
screen.
Tr ou b l es h oo t: If the voltage is not within an acceptable range, use the continuous test to
find the diode that fails. See Continuous Diode Test.
Blocking Diode Test
Blocking diodes ensure that the electrical current only flows in one direction “OUT” of the
series array to the inverter, external load, controller, or batteries to prevent the current
generated by the other parallel connected PV panels in the same array flowing back through a
weaker (shaded) network and also to prevent the fully charged batteries from discharging or
draining back through the array at night.
Blocking diodes can fail in both open and short circuit states. This test is important for
installations where blocking diodes are fitted.
To s et :
1. Turn the rotary switch on the PV Analyzer to .
The display shows the default Bypass Diode test mode.
2. Push
3. Connect the test leads from the PV Analyzer to the blocking diode.
4. Use
for the Blocking Diode test mode.
Tip: Push
a. Connect green test lead to positive anode.
b. Connect yellow test lead to negative cathode.
Blocking diodes can be measured in operational systems. There is no need to
disconnect the modules or switch off the voltage/power.
to see a connection diagram.
Note
to set the pass/fail limit for the blocking diode voltage measurement.
To s et li mi t :
a. Use
b. Use
c.Push
and to select the digit to edit.
to change the value.
(Back) to return to the blocking diode test screen.
When the measurement is complete, the display shows:
measured voltage of blocking diode
measured current of blocking diode
Passed:
than the preset limits.
Failed:
preset limits.
This test checks that the voltage drop of the diode is within the expected range (limit).
If the voltage drop is too low the diode is shorted, if the voltage is “OL” then the diode
is open.
and a short beep noise indicate the test passed when the results are greater
and multiple beeps indicate the test failed when the results are less than the
Note
to save the results to memory.
A confirmation message with ID number shows on the display and then returns to the test
screen.
Tr ou b l es h oo t: If the voltage is not within an acceptable range, use the continuous test to
find the diode that fails. See Continuous Diode Test.
Continuous Diode Test
Use the continuous diode test to test each diode of a PV cell and find the diode that fails.
To s et :
1. Turn the rotary switch on the PV Analyzer to .
The display shows the default Bypass Diode test mode.
2. Push
3. Connect the test leads from the PV Analyzer to a diode inside the panel junction box or
4. Connect green test lead to positive anode.
5. Connect yellow test lead to negative cathode.
for the Diode test mode.
disconnected diode.
Tip: Push
For this test the diodes must not be powered or operational.
to set the pass/fail limit for the diode voltage measurement.
To s et li mi t :
a. Use
b. Use
c.Push
and to select the digit to edit.
to change the value.
(Back) to return to the blocking diode test screen.
to start the measurement.
When the measurement is complete, the display shows:
measured voltage of diode
measured current of diode
Passed:
than the preset limits.
Failed:
preset limits.
Measurement results refresh every second.
and a short beep noise indicate the test passed when the results are greater
and multiple beeps indicate the test failed when the results are less than the
Note
This test is a test that the voltage drop of the diode is within the expected range (limit).
If the voltage drop is too low the diode is shorted, if the voltage is “OL” then the diode
is open.
Tip: Fluke recommends that you repeat the test with reversed polarity (connect yellow test
lead to positive anode and connect green test lead to negative cathode. The reading
should be always “OL”.
8. Push
9. Push
10. Push
to pause on-screen measurement.
again to resume on-screen measurement.
to save the results to memory.
A confirmation message with ID number shows on the display and then returns to the test
screen.
Periodically wipe the case with a damp cloth and mild detergent. Do not use abrasives or
solvents. Dirt or moisture in the terminals can affect readings.
To clean the terminals:
1. Turn off the PV Analyzer and remove all test leads.
2. Shake out any dirt that may be in the terminals.
3. Moisten a clean cotton swab with alcohol and clean the inside of each terminal.
Ta b l e 8 is a list of replaceable parts for the Tester.
Table 8. Replacement Parts
DescriptionPart Number
W Fuse, FF 630 mA 1000 V IR 30 kA for PV Analyzer5335526
Battery Holder1676850
Battery Access Door5330087
Fuse Replacement
To replace the fuse (see Figure 3):
1. Push
2. Remove the test leads from the terminals.
3. To remove the battery door, use a standard-blade screwdriver to turn the battery door
4. Replace the fuse.
5. Replace the battery door.
6. Turn the battery door screws one-quarter turn clockwise to fasten the door.
7. The battery voltage shows in the secondary display.
to turn off the PV Analyzer.
screws (x3) one-quarter turn counterclockwise.
XW Warning
To prevent possible electric shock or personal injury due to false readings:
Replace the batteries as soon as the empty battery icon appears.
Be sure that the battery polarity is correct. A reversed battery can cause leakage.