APsystems QT2 Bedienungsanleitung
APsystems Microinverter Quick Installation Guide
APsystems QT2 Microinverter
(For EMEA)
ALTENERGY POWER SYSTEM Inc.
emea.APsystems.com
APsystems
Karspeldreef 8, 1101 CJ, Amsterdam, The Netherlands
Tel: +31 (0)85 3018499 EMAIL: info.emea@APsystems.com
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2
2022/08/19 Rev 3.0 Quick Installation Guide
QT2 Microinverter Quick Installation Guide
Step 1. Verify that grid voltage matches microinverter rating
Step 2. Y3 AC Bus Cable distribution
a. Each connector drop of the AC Bus cable matches the position of the microinverter.
b. One end of the AC bus cable is used to access the junction box into the power grid.
c. Wire the conductors of the AC bus: L1 - BROWN; L2 - BLACK; L3 - GRAY (European
Standard); or L1 - BLACK; L2 - RED; L3 - BLUE (American Standard).
NOTE: Wiring color code can be different according to the local regulation. Check all the wires of
the installation before connecting to the AC bus to be sure they match. Wrong cabling can damage
irreparably the microinverters: such damage is not covered by the warranty.
Step 3. Attach the APsystems Microinverters to the Racking
NOTE: Install the microinverters (including DC and AC connectors) under the PV modules to avoid
direct exposure to rain, UV or other harmful weather events. Allow a minimum of 1.5 cm (3/4’’)
below and above the casing of the microinverter to allow proper air flow. The racking must be
properly grounded as per local electrical code.
ATTENTION: Do NOT carry the
microinverter by the AC cable. This
may cause the AC cable to partially
or fully disconnect from the unit,
resulting in no or poor operation.
a. Mark the location of the microinverter on the rack, with respect to the PV module junction box or
any other obstructions.
b. Mount one microinverter at each of these locations using hardware recommended by your module
racking vendor, make sure the grounding washer is facing the racking.
Step 4. Ground the system
There’re 2 ways to ground the QT2 series microinverters.
1. By grounding washer attached.
After the microinverters and racking are reliably installed, the microinverter’s grounding washer can
connect to the racking to ensure proper earthing.
M8
(Not supplied by APsystems)
2. By grounding copper wire.
Fix the grounding copper wire by the grounding lug.
grounding
lug
grounding washer
Warning injure hand
3
2022/08/19 Rev 3.0 Quick Installation Guide
Step 5. Connect the APsystems microinverter to AC bus cable
Insert the microinverter AC connector into the trunk cable connector. Make sure to hear the “click” as a
proof of robust connection.
Step 6. Install a Bus Cable End Cap at the end of AC bus cable
Step 7. Place the PV modules and connect each QT2 to the PV modules
NOTE: When plugging in the DC cables, the microinverter should immediately blink green ten times.
This will happen as soon as the DC cables are plugged in and will show that the microinverter is
functioning correctly. This entire check function will start and end within 10 seconds of plugging in
the unit, so pay careful attention to these lights when connecting the DC cables.
WARNING! Double check to make sure all of the AC and DC wiring has been correctly installed.
Ensure that none of the AC and/or DC wires are pinched or damaged. Make sure that all of the
junction boxes are properly closed.
WARNING! Each pv panel must be carefully connected to the same channel.
Never split positive and negative cables into two different channels, otherwise the inverter will be
damaged and warranty will not apply.
NOTE: No neutral wire output from inverter. Compatible with both Delta and Wye 3-phase
grid.
Click
NOTE: AC connector interface as
from left to right. NOTE: Cover any unused connectors with Bus Cable Y-
CONN Cap to protect the unused connectors.
Best Practice: Use the Bus Cable Unlock Tool of AC Bus
to disconnect the connectors.
25mm-30mm
Nut
Seal
Body
3.3
N·
m
X
4
2022/08/19 Rev 3.0 Quick Installation Guide
Step 8. Complete the APsystems installation map
a. Each APsystems Microinverter has 2 removable serial number labels.
b. Complete installation map by sticking ID label of each microinverter at the right location.
c. The second serial number label, could be stuck on the solar module frame, which could help
later to confirm the position of the microinverter without dismantling the PV module.
NOTE: . The layout of the microinverters’
serial numbers installation map is only suitable for
typical Installation.
. Installation Map is available in the last page appendix of this manual.
.
Use ECU_APP (available in the EMA Manager) to scan the serial numbers on the map
when setting up the E
CU (see ECU instruction manual for more info)
.
Produce: information is subject to change without notice. (Please download manuals at www.APsystems.com).
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5
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