Huawei SUN2000-375W-USP0 User manual

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Issue: 03
Part Number: 31509514
Date: 2018-06-11
SUN2000-375W-USP0 Smart PV
Optimizer Quick Guide
Copyright © Huawei Technologies Co., Ltd. 2018. All rights reserved.
Secure the optimizer to a PV module support or PV module frame. The fittings required depend on the
installation position.
1Overview
2Installing the Optimizer
Installing the Optimizer on the Extruded Aluminum Profile of a PV Module Support
Install the optimizer on
the extruded aluminum
profile.
Assemble the flange
nut and optimizer. Tighten the nut.
–SUN2000: PV product series name
–375W: maximum input power 375 W
–US: U.S. edition
–P: smart PV optimizer identifier
–0: serial number
SUN2000-375W-USP0
Mounting
ear
OUT+OUT–IN+IN–
Model Naming Conventions
Port Definition
Item
Description
Grounding
mode
Grounding the
mounting ears
Protection level
6P
Label
Name
Electric
shock
warning
Burn
warning
Grounding
Direct
current

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Installing the Optimizer (Front Outwards) on a PV Module Frame
PV module
Assemble the
optimizer and the
frame mounting
bracket.
Install the frame
mounting bracket
on the back of the
PV module frame.
Secure the frame mounting bracket.
Rooftop
The front of the optimizer should be at least 20
mm away from the rooftop.
Do not press the optimizer mounting ear against
the positioning pole of the frame mounting
bracket.
Positioning pole
NOTE
Installing the Optimizer (Back Outwards) on a PV Module Frame
Assemble the
optimizer and the
frame mounting
bracket.
Install the frame
mounting bracket
on the back of the
PV module frame.
Secure the frame mounting bracket.
PV module
The front of the optimizer should be at least
10 mm away from the back of the PV module.
The frame mounting bracket should be at
least 20 mm away from the rooftop.
Rooftop
NOTE

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3Installing the Optimizer Cable
1.Connect the IN+ port and IN–port on the first optimizer respectively to the positive and negative
wiring terminals in the PV module connection box.
2.Connect the OUT–port on the first optimizer to the OUT+ port on the next optimizer.
3.Connect other optimizer cables in turn by following steps 1 and 2.
4.Connect the OUT–port on the last optimizer to the PV–port on the inverter.
5.Connect the OUT+ port on the first optimizer to the PV+ port on the inverter.
1.Check that all mounting brackets are securely installed and all screws are tightened.
2.Check that all cables are reliably connected with correct polarity and no short circuit.
For details, see the description about inverter power-on.
Install optimizer cables as shown in the following figure. Failing to do so may damage the optimizer
or PV module.
If an optimizer does not connect to any other device, connect the OUT+ and OUT- ports of the
optimizer respectively to the IN+ and IN–ports to protect the terminals from water.
The optimizers in the same PV string can be installed in various orientations and tilts, and on
various types of PV modules. The following figure shows how optimizers are installed on the same
side of PV module frames.
An optimizer should be less than 0.8 meter away from the connection box, and less than 2 meters
away from the next optimizer.
An optimizer should be 1–350 meters away from the inverter.
The Photovoltaic System Grounding shall be installed per the requirements of Sections 690.41
through 690.47 of the National Electrical Code, ANSI/NFPA 70 and is the responsibility of the
installer.
The National Electrical Code, ANSI/NFPA 70 wiring mode must be used in onsite installation.
Cable terminals from different manufacturers cannot be interconnected.
Inverter
PV module connection box
4Verifying the Installation
5Powering On the System
NOTE
It is recommended that the positive and negative cables (PV+ and PV-) between the optimizer and
inverter be pulled straight and placed in parallel to avoid tangling.
NOTE

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Huawei Technologies Co., Ltd.
Huawei Industrial Base, Bantian, Longgang
Shenzhen 518129 People's Republic of China
www.huawei.com