HopEwind HSNV Series String Inverter

Thank you for purchasing products developed and manufactured by Shenzhen Hopewind Electric Co., Ltd. (hereinafter referred to as “Hopewind”). We sincerely hope that our products and this manual can meet your demands. Any suggestion for improvement shall be appreciated. Shenzhen Hopewind Electric Co., Ltd. (or its affiliated subsidiaries) owns the patents, copyrights and other intellectual property rights of this product and its related software. No part of this manual can be extracted or reproduced without prior written consent of Hopewind.

For Readers
This manual is helpful for technicians who install, debug, operate and maintain string inverters of Hopewind. Please read this manual carefully before operating the product. Readers are required to know the basic knowledge about electric components, wiring, signs and mechanical drawings.

Safety Precautions

In this chapter, it describes the safety precautions that must be observed when installing, operating and maintaining the inverter. Please read them carefully before operation and follow them in operation process; otherwise it might cause damage to the inverter, the generator and related equipment or cause serious injury or loss of life. When you use and operate the inverter, please take special attention to the following issues.

DANGER

1. Only the qualified personnel are allowed to install, operate and maintain the inverters.
2. Do not incline or collide the product in transportation.
3. Do not make any liquid, sundries or rubbishes enter inside as they might cause short circuit inside theinverter.
4. Inverter must be disconnected with AC grid before completion of installation and maintenance.
5. Related protective measures are required to avoid electric shock or fire accident.

WARNING
Please do not place inflammables and explosives around the inverter to ensure environmental safety.

Storage

WARNING
The storage environment of the string inverter must meet the corresponding requirements. Please refer to 2.10 Ambient Requirements.

About long-term storage
Before or after the installation and commissioning, if the string inverter is in the no-power supply state for more than three weeks, it is regarded as long-term storage. Long-term storage of string inverters requires attention to the following issues:

• When storing equipment, pay attention to ventilation and moisture. Stagnant water is strictly forbidden in
  the storage environment. Pay attention to the harsh environment, such as quenching, sudden heat, collision, dust, etc., to avoid damage to the string inverter.
• Regular inspections are required, usually not less than once a week. Check whether the packaging is intact to avoid pest bites. If it is damaged, it needs to be replaced immediately.
• It is strictly forbidden to store the device without packaging.

Installation

DANGER

1. Before operating the internals of the string inverter, it must be confirmed that the input switch DC Switch of the string inverter and the circuit breaker corresponding to the AC side of the inverter are in the off state, and the housing of the inverter is reliably guaranteed.
2. The string inverter must be grounded according to the specifications. The size of the grounding conductor must meet the requirements of safety regulations to ensure the safety of personnel.

WARNING

1. During installation, it is necessary to ensure that the string inverter’s installation environment is well ventilated and heat-dissipating, and the device should not be directly exposed to sunlight.
2. The fixing of the string inverter is recommended by two people working together to avoid mechanical damage. During the installation process, safety measures should be taken to prevent bruises.
3. During installation and maintenance, it is necessary to prevent liquid, dust or debris from entering the inside of the string inverter. Conductive liquids and debris may cause internal short circuit of the string inverter, resulting in equipment damage.
4. When connecting the wiring of the external cable to the string inverter, the installation torque of the power able must be ensured. Excessive torque may cause fatigue damage of the screw while too small torque may cause the contact resistance to become large, resulting in overheating.
5. The power cable terminals connected to the string inverter must comply with national standards. If the terminals are not in accordance with the standards, the power cable may be overheated. In severe cases,
   a fire may occur.
6. The installation site must meet the requirements of the operating environment. Please refer to 2.10

Ambient Requirements

Product Introduction
The HSNV series is three-phase grid-connected PV inverter independently researched and developed by Hopewind. Its main function is to convert the DC power generated by the PV string into AC power and feed it into the power grid.
Models described in this manual include HSNV100K-G01 and HSNV110K-G01. They have 20 input strings and are suitable for low-voltage grid-connected scenarios.
2.1.1 Schematic Diagram

2.1.2 Working Mode
The HSNV series three-phase string inverter has three working modes: standby mode, operating mode, and shutdown mode. The switching conditions of the three modes are shown as follows.

System Configuration and Networking Application
2.2.1 Networking Application
Figure 2-3 shows the networking application of the string inverter, and Figure 2-4 shows the networking design scheme of the distributed PV power station.

Supported Power Grid Types
The power grid types supported by HSNV100K-G01 and HSNV110K-G01 include TN-S, TN-C, TN-C-S,
TT and IT.

Naming Rules

Nameplate

Receiving Inspection
After confirming that the outer packaging is intact, please carry out the unpacking inspection. Unpack the packaging box and check whether the appearance of the string inverter is in good condition. When opening the package, be careful to use the tool to avoid scratching the string inverter. Although the inverter has been strictly tested and inspected before leaving factory, accidental damage might happen during transportation. Please inspect and check the product as soon as you receive it. If there is any damage or omission, please contact us and we will help you as soon as possible. 3.2 Installation Tools Preparation Please prepare installation tools including but not limited to the following recommended ones.

Installation Environment Requirements

• The environmental requirements for the installation of string inverter are shown in 1 Safety Precautions.
• The installation mode and position must be suitable for the weight and dimension of the string
  inverter. See 2.9 Mechanical Parameters.
• The string inverter should be installed in a well ventilated environment to ensure good heat dissipation. Avoiding inverter direct sunlight, rain and snow can prolong the life of inverter. It is recommended to choose sheltered installation sites. If that cannot be satisfied, please set up a sun shading shelter.
• During the operation of the string inverter, the temperature of the housing and the radiator will be relatively high. Do not install the inverter in the position which will be touched unintentionally.

Installation Clearance Requirements
When installing the string inverter, the space around the string inverter must be reserved for heat
dissipation and maintenance.

Documents / Resources

HopEwind HSNV Series String Inverter [pdf] User Guide HSNV Series String Inverter, HSNV Series, String Inverter, Inverter

References

• User Manual