E Star HERF-300 Mode d’emploi

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Installation/User Manual

MICROINVERTER

Ver:1.1,2022-07

HERF-300 HERF-400 HERF-500

202207V1.1

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About Microinverter

This system is composed of a group of Microinverters that convert direct current (DC) into alternating current

(AC) and feeds it into the public grid. The system is designed for the incorporation of one Microinverter for

four photovoltaic modules. Each Microinverter works independently that guarantees the maximum power

generation of each photovoltaic module. This setup enables user to control the production of a single

photovoltaic module directly, consequently improving the flexibility and reliability of the system.

About the Manual

This manual contains important instructions for the HERF-300/HERF-400/HERF-490 Microinverter and must be

read in its entirety before installing or commissioning the equipment. For safety, only qualified technician, who

has received training or has demonstrated skills can install and maintain this Microinverter under the guide of

this document.

Other Information

Product information is subject to change without notice. User manual will be updated frequently, please refer

to HERF official website at https://www.estarpower.com/microinverters /for the latest version.

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Table of Contents

1.Important Safety Instructions....................................................................................................................................................3

1.1Safety Instructions........................................................................................................................................................... 3

1.2Radio Interference Statement......................................................................................................................................... 4

1.3The Meaning of Symbols................................................................................................................................................. 5

2.Microinverter System Introduction........................................................................................................................................... 6

2.1About 1 in 1 Unit..............................................................................................................................................................6

2.2Microinverter Highlights.................................................................................................................................................. 6

2.3Terminals Introduction.................................................................................................................................................... 7

3.About Function.......................................................................................................................................................................... 8

3.1Work Mode...................................................................................................................................................................... 8

4.About Installation...................................................................................................................................................................... 9

4.1Accessories.......................................................................................................................................................................9

4.2Installation Precaution...................................................................................................................................................10

4.3Space Distance Required............................................................................................................................................... 10

4.4Preparation.................................................................................................................................................................... 10

4.5Installation Steps............................................................................................................................................................11

5. Troubleshooting...................................................................................................................................................................... 17

5.1Status LED Indicator.......................................................................................................................................................17

5.2On-site Inspection (For qualified installer only)............................................................................................................17

5.3Routine Maintenance.................................................................................................................................................... 18

6.Decommissions........................................................................................................................................................................ 19

6.1Decommissions..............................................................................................................................................................19

6.2Storage and Transportation........................................................................................................................................... 19

6.3Disposal..........................................................................................................................................................................19

7.Technical Data.......................................................................................................................................................................... 21

7.1DC Input......................................................................................................................................................................... 21

7.2AC Output...................................................................................................................................................................... 21

7.3Efficiency, Safety and Protection................................................................................................................................... 21

7.4Mechanical Data............................................................................................................................................................ 22

7.5Features......................................................................................................................................................................... 22

Appendix 1:................................................................................................................................................................................. 23

Installation Map.................................................................................................................................................................. 23

Appendix 2:................................................................................................................................................................................. 24

WIRING DIAGRAM – 230VAC SINGLE PHASE:.................................................................................................................... 24

WIRING DIAGRAM – 230VAC / 400VAC THREE PHASE:..................................................................................................... 25

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1.Important Safety Instructions

This manual contains important instructions to follow during installation and of the Photovoltaic Grid-connected

Inverter (Microinverter). To reduce the risk of electrical shock and ensure the safe installation and operation of

the Microinverter, the following symbols appear throughout this document to indicate dangerous conditions and

important safety instructions.

Specifications subject to change without notice - please ensure you are using the latest manual found at the

manufacturer website.

WARNING: This indicates a situation where failure to follow instructions may cause a serious hardware failure or

personnel danger if not applied appropriately. Use extreme caution when performing this task.

*Note: This indicates information that is important for optimized microinverter operation. Follow these

instructions strictly.

1.1Safety Instructions

DO NOT disconnect the PV module from the Microinverter without disconnecting the AC power.

Only qualified professionals should install and/or replace the Microinverters.

Perform all electrical installations in accordance with local electrical codes.

Before installing or using the Microinverter, please read all instructions and cautionary markings in the

technical documents and on the Microinverter system and the Microinverter solar-array.

Be aware that the body of the Microinverter is the heat sink and can reach a temperature of 80℃ . To reduce

risk of burns, do not touch the body of the Microinverter.

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DO NOT attempt to repair the Microinverter. If it fails, contact technical support to obtain an RMA number and

start the replacement process. Damaging or opening the Microinverter will void the warranty.

Caution!

The external protective earthing conductor is connected to the inverter protective earthing terminal through AC

connector.

When connecting, connect the AC connector first to ensure the inverter earthing then do the DC connections.

When disconnecting, disconnect the AC by opening the branch circuit breaker first but maintain the protective

earthing conductor in the branch circuit breaker connect to the inverter, then disconnect the DC inputs.

In any circumstance, do not connect DC input when AC connector is unplugged.

Please install isolation switching devices on the AC side of the inverter.

1.2Radio Interference Statement

CE EMC Compliance：The equipment can comply with CE EMC, which are designed to protect against harmful

interference in a residential installation. The equipment could radiate radio frequency energy and this might cause

harmful interference to radio communications if not following the instructions when installing

and using the equipment. But there is no guarantee that interference will not occur in a particular installation. If

this equipment causes harmful interference to radio or television reception, the following measures might resolve

the issues:

A) Relocate the receiving antenna and keep it well away from the equipment.

B) Consult the dealer or an experienced radio / TV technical for help. Changes or modifications not expressly

approved by the party responsible for compliance may void the user's authority to operate the equipment.

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1.3The Meaning of Symbols

Symbol

Usage

Treatment

To comply with European Directive 2002/96/EC on waste Electrical and Electronic Equipment and

its implementation as national law, electrical equipment that has reached the end of its life must

be collected separately and returned to an approved recycling facility. Any device no longer

required must be returned to an authorized dealer or approved collection and recycling facility.

Caution

Do not come within 8 inches (20cm) of the microinverter for any length of time while it is in

operation.

Danger of high voltages

Danger to life due to high voltage in the microinverter.

Beware of hot surface

The inverter can become hot during operation. Avoid contact with metal surfaces during

operation.

CE mark

The inverter complies with the requirements of the Low Voltage Directive for the European

Union.

Read manual first

Please read the installation manual first before installation, operation and maintenance.

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2.Microinverter System Introduction

2.1About 1 in 1 Unit

“ 1-in-1 Unit Microinverter ” with ultra-wide DC input operating voltage range (16 V – 60 V) and low

start-up voltage (22 V only).

2.2Microinverter Highlights

Maximum output power up to 300W/400W/490W; Adapted to 60 & 72 cells PV panels.

CEC weighted efficiency 96.50%.

MPPT efficiency 99.5%.

High reliability: NEMA6 (IP67) enclosure; 6000V surge protection.

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2.3Terminals Introduction

Object

Description

AC Connector (Male)

DC Connectors

AC Connector (Female)

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3.About Function

3.1Work Mode

Normal: Under this mode, Microinverter is operating normally and convert DC power into AC power to support

the house loads and feed in to Public Grid.

Zero Export Control: Under this mode Microinverter’s generation is limit base on the current house loads, there

will be no extra power feed in to the Public Grid.

Stand by: There are several circumstances that Microinverter will stay in Standby mode:

The current condition is contradicted with Microinverter operating requirement.

No house loads or the Export control value has been set as “0” on the DCU under the Zero Export Control

mode.

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4.About Installation

4.1Accessories

*Note: All accessories above are not included in the package, and need to be purchased separately.

Please contact our sales representative for the price. (M8 screws need to be prepared by

installer-self.)

Object

Description

AC End Cable (Male), 2m 12AWG Cable

DC Extension Cable, 1m

M8*25 screws

AC Female End Cap, IP68

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