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SunSynk 8kW User Manual

SunSynk 8kW
63 pages
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10/26/2020
TRAINING MANUAL
Global Tech China Ltd, 3 Floor, Wai Yip Industrial Building.171 Wai Yip Street,
Kwun Tong, Kowloon, Hong Kong.
Tel: +852 2884 4318 Fax: +8522884 4816
www.sunsynk.com / sales@globaltech-china.com / www.globaltechhk.com
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Table of Contents

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SunSynk 8kW Specifications

General IconGeneral
Rated Power8kW
Max. DC Voltage500V
Number of MPPTs2
Max Output Current35A
Max Efficiency97.6%
Battery Voltage48V
Max Charging Current190A
Max Discharging Current190A
Frequency50/60Hz
Max PV Input10400W
Operating Temperature-25°C to 60°C
Protection RatingIP65
Max DC Input Voltage500V
Max Input Current22A
Nominal AC Voltage230V
CommunicationRS485
ProtectionOverload Protection
CoolingFan

Summary

1. INTRODUCTION

1.1. WHAT IS A HYBRID INVERTER

Explains the term 'hybrid' in electrical engineering and its application.

1.2. A SIMPLE HYBRID INVERTER

Describes a basic hybrid inverter setup using an off-grid inverter and changeover switch.

1.3. TYPES OF HYBRID INVERTERS

Classifies hybrid inverters into low-frequency and high-frequency categories.

1.3.1. BASIC HIGH-FREQUENCY CHANGEOVER INVERTERS

Details high-frequency inverters with changeover switches, common in car audio.

1.3.2. BASIC HIGH-FREQUENCY CHARGER INVERTERS

Describes high-frequency inverters with an added small battery charger function.

1.3.3. MULTI-MODE HYBRID INVERTERS

Covers multi-mode inverters, larger versions of charger inverters with more features.

1.3.4. AC COUPLED HYBRID INVERTERS

Highlights AC coupled inverters, which operate similarly to On-Grid Inverters.

1.3.5. BI-DIRECTIONAL DRIVER HYBRID INVERTERS

Discusses 'super inverters' that offer high power reverse/charge capability and reliability.

2. SUNSYNK PARITY BI-DIRECTIONAL DRIVER TYPE HYBRID INVERTER

2.1. THE HEART OF SUNSYNK IS A 8.8KW BI-DIRECTIONAL INVERTER

Identifies the 8.8kW bi-directional inverter as the central component of the Sunsynk system.

2.2. THE INVERTER CAN SWITCH CIRCUITS IN AND OUT BY CONTROLLING RELAYS

Explains how the inverter switches circuits using relays, with an important note on operation.

2.3. UNDERSTANDING HOW THE INVERTER OPERATES IS ESSENTIAL WHEN SELECTING THE CORRECT WIRING CONFIGURATIONS

Emphasizes understanding inverter operation for correct wiring configurations and mentions the display's system flow.

2.3.1. SYSTEM FLOW

Illustrates the system flow with combined MPPTs and explains prioritization options for load or battery.

3. INSTALLING THE SUNSYNK INVERTER

3.1. MOUNTING THE INVERTER

Provides guidance on mounting the inverter securely and considerations for placement.

3.2. BATTERY CONNECTION

Discusses battery types, C-rating, and provides a guide for connection and safety.

4. MAXIMUM POWER POINT TRACKERS (MPPTS)

5. THE DISPLAY

5.1. HOME SCREEN

Describes the initial screen displayed upon system boot, providing essential information.

5.2. STATUS PAGE

Details various parameters like solar power, grid status, inverter performance, and load.

5.2. SYSTEM FLOW PAGE

Provides a visual representation of the system's power flow, battery status, and distribution.

5.2. SET UP / PROGRAMMING PAGE

Allows selection of language, system settings, and configuration of battery type for the inverter.

6. OPERATION MODES

6.1. ON-GRID WITH NO PV

Explains the 'On-Grid with no PV' mode for low-sunshine areas, focusing on energy storage.

6.2. ON-GRID WITH UPS

Details the 'On-Grid with UPS' mode, covering single or dual inverter configurations and grid failure handling.

6.3. USING A GENERATOR – WIRING / COMMON ISSUES / PROGRAMMING

Guides on wiring generators, common issues, and programming for hybrid inverter systems.

6.5. AUXILIARY / SMART LOAD

Explains the auxiliary load function for diverting power to devices like water heaters or air conditioners.

6.6. PEAK SHAVING

Describes Peak Shaving as a technique to reduce power consumption during peak demand, saving money.

6.7. WIND TURBINES

Discusses connecting and using wind turbines with the Sunsynk inverter, including necessary components.

6.4. EARTH CONNECTION (MANDATORY)

6.4.1. EARTH BOND RELAY

Explains the necessity of earth bond for hybrid systems and how to connect the AC output to A/T/S.

7. PARALLELING INVERTERS

7.1. SINGLE-PHASE CONFIGURATION

Details connecting up to 16 inverters in a single-phase setup, emphasizing master/slave roles.

7.2. THREE-PHASE CONFIGURATION

Explains paralleling inverters in a three-phase system, requiring three masters for phase rotation.

Fault Codes

F13 - Working mode change

Describes the F13 fault related to changing system status while running, requiring load isolation.

F18 AC - over current fault of the hardware

Explains the F18 fault due to overload on the 'Load' terminal, often caused by many loads switching simultaneously.

F20 - DC over current fault of the hardware

Addresses F20 fault caused by battery issues or startup overloads, focusing on C-rating and connections.

F23 - AC leakage current or transient over current

Details F23 fault indicating earth leakage or transient issues on the AC side, requiring checks of cables and PV ground.

F24 - DC insulation impedance failure

Explains F24 fault due to earth fault on solar panels or arrays, requiring isolation of the faulty component.

F26 - The DC busbar is unbalanced

Describes F26 fault occurring in split-phase mode when L1 and L2 loads differ, potentially damaging IGBT.

F29 - Parallel communication cable fault

Covers F29 fault indicating communication issues with parallel inverters, suggesting cable checks and resistor settings.

F35 - No AC grid

Details F35 error for the absence of AC grid power, requiring investigation into the AC supply.

F42 - AC line low voltage

Addresses F42 fault related to AC line low voltage, suggesting adjustments to grid voltage settings.

F47 AC over frequency / F48 AC lower frequency

Discusses frequency-related faults (F47/F48) and recommends adjusting inverter frequency settings to match the grid.

F56 - DC busbar voltage is too low

Explains F56 fault related to low DC busbar voltage, indicating battery issues and recommending cable checks.

F63 - ARC fault

Details F63 fault caused by loose solar panel connections, posing a fire hazard, and requiring system shutdown.

F64 - Heat sink high-temperature failure

Explains F64 fault due to IGBT over-temperature from blocked fans or poor ventilation, potentially damaging the inverter.

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