KStar KSG-20K User Manual

KSG-10K/12K/15K/17K/20KKSG-10K/12K/15K/17K/20K
201803 Ver 1.1
Solar InverterSolar Inverter
User Manual

KStar KSG-20K Specifications

General

Brand	KStar
Model	KSG-20K
Category	Inverter
Language	English

Summary

Introduction for Signs

Warning and Instruction Symbols

Explains warning and instruction symbols used in the manual for safety and operation.

Introduction to the Solar Inverter

Preface

Welcomes users and solicits suggestions for the photovoltaic grid-connected inverter.

PV Grid-connected Generating System Overview

Describes the composition and function of a photovoltaic grid-connected generating system.

How to Use This Manual

Provides guidance on reading the manual for installation, use, and maintenance of the inverter.

Safety Instructions

General Safety Precautions

Lists general safety rules for installation, operation, and maintenance of the inverter.

High Voltage Warning

Warns about exceeding 1000V DC input voltage, which can cause permanent damage.

Overall Introduction

Circuit Structure Overview

Explains the main circuit of the inverter and the adoption of MPPT algorithm.

External Interface Description

Details the DC input, communication interfaces (RS232, RS485), AC output, and DC switch.

System Operation

System Operating Modes

Describes modes like initialization, waiting, self-checking, grid-connected, and error modes.

Grid-connected Operation

Explains the process and prerequisites for connecting the inverter to the grid.

System Shutdown Procedure

Explains how the inverter shuts down automatically when power is low or faults occur.

Error and Alarm Information

Provides a table of working conditions, fault messages, and their descriptions.

System Fault and Troubleshooting Guide

Details common system faults, alarm messages, and their troubleshooting solutions.

Human-machine Interface

LCD Control Panel Overview

Describes the buttons and LEDs on the inverter's LCD control panel.

Networking for Monitoring

Explains design schemes for monitoring the photovoltaic power generation system.

Dry Contact Interface

Describes the optional dry contact interface for the inverter.

Remote Control Capabilities

Explains the inverter's remote shutdown, ON, and power limit functions via monitoring software.

LCD Operation Menu and Settings

Initialization and Menu Navigation

Covers inverter initialization, major cycle menu, and user interface navigation.

Setup Interface and Password Entry

Introduces the setup interface, password entry, and main setting categories.

Input, Grid, and Remote Control Configuration

Configures PV input mode, electric network standards, and remote control options.

Working Parameters: Voltage, Frequency, and Power

Sets starting voltage/delay, grid voltage/frequency limits, and power parameters.

Reactive Power, Derating, Communication, and Display Settings

Configures reactive power, power factor, derating, RS485, display language, and backlight.

System Maintenance, Reset, and Data Inquiry

Manages date/time, history, password, factory reset, and data inquiry functions.

Statistics and Generation Data

Displays time, paralleling, power peak, and energy generation statistics.

Installation Guide

Mechanical Installation and Requirements

Covers installation overview, safety, dimensions, and location guidelines.

Installation Procedure and Ambient Conditions

Details mounting steps, location, and environmental requirements.

Electrical Connection Requirements

Outlines requirements for PV array voltage, grid connection, wiring, and tools.

AC and DC Wiring Instructions

Provides instructions for connecting AC output and DC input wires.

Communication Wiring

Explains how to connect the inverter for communication monitoring via RS485/RS232.

Starting and Closing Procedures

Inverter Starting Process

Details the sequence of steps for starting the inverter and connecting to the grid.

Normal and Emergency Closing Procedures

Explains normal automatic closing and emergency shutdown procedures.

Technical Data Specifications

Appendix and Quality Assurance

Quality Assurance Policy

Details the company's quality assurance policy, conditions, and exclusions.