PowerWalker SKY 3.6KW User manual

PowerWalker

SOLAR INVERTER SKY

(3600-5600VA)

ON-Grid Charger

Version: 1.1

User Manual

Table Of Contents

ABOUT THIS MANUAL ..................................................................................................................................... 1

Purpose............................................................................................................................................................ 1

Scope ............................................................................................................................................................... 1

SAFETY INSTRUCTIONS.................................................................................................................................. 1

INTRODUCTION ............................................................................................................................................... 2

Product Overview............................................................................................................................................. 3

INSTALLATION ................................................................................................................................................. 4

Unpacking and Inspection ............................................................................................................................... 4

Preparation ...................................................................................................................................................... 4

Mounting the Unit............................................................................................................................................. 4

Battery Connection .......................................................................................................................................... 5

AC Input/Output Connection............................................................................................................................ 6

PV Connection ................................................................................................................................................. 7

Final Assembly................................................................................................................................................. 8

Communication Connection............................................................................................................................. 9

Dry Contact Signal ........................................................................................................................................... 9

OPERATION ..................................................................................................................................................... 10

Power ON/OFF .............................................................................................................................................. 10

Operation and Display Panel ......................................................................................................................... 10

LCD Display Icons ......................................................................................................................................... 11

LCD Setting.................................................................................................................................................... 14

Display Setting ............................................................................................................................................... 26

Operating Mode Description .......................................................................................................................... 30

CLEARANCE AND MAINTENANCE FOR ANTI-DUST KIT.......................................................................... 36

Overview ........................................................................................................................................................ 36

Clearance and Maintenance.......................................................................................................................... 36

SPECIFICATIONS ........................................................................................................................................... 37

TROUBLE SHOOTING..................................................................................................................................... 38

Appendix I: Parallel function ...................................................................... Fehler! Textmarke nicht definiert.

Appendix II: BMS Communication Installation ...................................... Fehler! Textmarke nicht definiert.

Appendix III: The Wi-Fi Operation Guide in Remote Panel ................. Fehler! Textmarke nicht definiert.

ABOUT THIS MANUAL

Purpose

This manual describes the assembly, installation, operation and troubleshooting of this unit. Please read

this manual carefully before installations and operations. Keep this manual for future reference.

Scope

This manual provides safety and installation guidelines as well as information on tools and wiring.

SAFETY INSTRUCTIONS

WARNING: This chapter contains important safety and operating instructions. Read and

keep this manual for future reference.

1. Before using the unit, read all instructions and cautionary markings on the unit, the batteries, and all

appropriate sections of this manual.

2. CAUTION --To reduce risk of injury, charge only deep-cycle lead acid type rechargeable batteries.

Other types of batteries may burst, causing personal injury and damage.

3. Do not disassemble the unit. Take it to a qualified service center when service or repair is required.

Incorrect re-assembly may result in a risk of electric shock or fire.

4. To reduce risk of electric shock, disconnect all wirings before attempting any maintenance or cleaning.

Turning off the unit will not reduce this risk.

5. CAUTION – Only qualified personnel can install this device with battery.

6. NEVER charge a frozen battery.

7. For optimum operation of this inverter/charger, please follow required spec to select appropriate cable

size. It’s very important to correctly operate this inverter/charger.

8. Be very cautious when working with metal tools on or around batteries. A potential risk exists to drop

a tool to spark or short circuit batteries or other electrical parts and could cause an explosion.

9. Please strictly follow installation procedure when you want to disconnect AC or DC terminals. Please

refer to INSTALLATION section of this manual for the details.

10. Fuses are provided as over-current protection for the battery supply.

11. GROUNDING INSTRUCTIONS -This inverter/charger should be connected to a permanent grounded

wiring system. Be sure to comply with local requirements and regulation to install this inverter.

12. NEVER cause AC output and DC input short circuited. Do NOT connect to the mains when DC input

short circuits.

13. Warning!! Only qualified service persons are able to service this device. If errors still persist after

following troubleshooting table, please send this inverter/charger back to local dealer or service center

for maintenance.

INTRODUCTION

This hybrid PV inverter can provide power to connected loads by utilizing PV power (DC), utility power (AC) and

battery power (DC).

Figure 1 PV System Overview

Depending on different power situations, this hybrid inverter is designed to generate continuous power from PV

solar modules (solar panels), battery, and the utility. When MPP input voltage of PV modules is within

acceptable range (see specification for the details), this inverter is able to generate power to feed the grid

(utility) and charge battery. Never connect the positive and negative terminals of the solar panel to

the ground. See Figure 1 for a simple diagram of a typical solar system with this hybrid inverter.

Product Overview

NOTE: For parallel installation and operation, please check

Appendix I.

1. RGB LED ring (refer to LCD Setting section for the details)

2. LCD display

3. Function buttons

4. PV connectors

5. AC input connectors

6. AC output connectors (Load connection)

7. Battery connectors

8. Current sharing port

9. Parallel communication port

10. Circuit breaker

11. Power switch

12. Dry contact

13. USB port as USB communication port and USB function port

14. RS-232 communication port

15. BMS communication port: CAN, RS-485 or RS-232

INSTALLATION

Unpacking and Inspection

Before installation, please inspect the unit. Be sure that nothing inside the package is damaged. You should

have received the following items inside of package:

Inverter CD User manual Communication cable

Preparation

Before connecting all wirings, please take off bottom cover by removing two screws as shown below.

Mounting the Unit

Consider the following points before selecting where to install:

Do not mount the inverter on flammable construction

materials.

Mount on a solid surface.

Install this inverter at eye level to allow the LCD display to be

read at all times.

The ambient temperature should be between -10°C and

50°C to ensure optimal operation.

The recommended installation position is to be adhered to

the wall vertically.

Be sure to keep other objects and surfaces as shown in the

right diagram to guarantee sufficient heat dissipation and

to have enough space for removing wires.

SUITABLE FOR MOUNTING ON CONCRETE OR

OTHER NON-COMBUSTIBLE SURFACE ONLY.

Install the unit by screwing three screws. It’s recommended to use M4 or M5 screws.

Battery Connection

CAUTION: For safety operation and regulation compliance, it’s requested to install a separate DC over-current

protector or disconnect device between battery and inverter. It may not be requested to have a disconnect

device in some applications, however, it’s still requested to have over-current protection installed. Please refer

to typical amperage in below table as required fuse or breaker size.

WARNING! All wiring must be performed by qualified personnel.

WARNING! It's very important for system safety and efficient operation to use

appropriate cable for battery connection. To reduce risk of injury, please use the

proper recommended cable and terminal size as below.

Recommended battery cable and terminal size:

Model Typical

Amperage

Battery

Capacity

Wire Size

Ring Terminal

Torque

Value

Cable

mm2

Dimensions

D (mm)

L (mm)

3.6KW 100A 200AH

1*4AWG 22 6.4 33.5 2~3 Nm

5.6KW /

6KW

137A 200AH

1*2AWG or 2*6AWG 28 6.4 42.7 2~3 Nm

Please follow below steps to implement battery connection:

1. Assemble battery ring terminal based on recommended battery cable and terminal size.

2. Insert the ring terminal of battery cable flatly into battery connector of inverter and make sure the nuts are

tightened with torque of 2-3 Nm. Make sure polarity at both the battery and the inverter/charge is correctly

connected and ring terminals are tightly screwed to the battery terminals.

Ring terminal:

WARNING: Shock Hazard

Installation must be performed with care due to high battery voltage in series.

CAUTION!! Do not place anything between the flat part of the inverter terminal and the ring

terminal. Otherwise, overheating may occur.

CAUTION!! Do not apply antioxidant substance on the terminals before terminals are connected

tightly.

CAUTION!! Before making the final DC connection or closing DC breaker/disconnector, be sure

positive (+) must be connected to positive (+) and negative (-) must be connected to negative (-).

AC Input/Output Connection

CAUTION!! Before connecting to AC input power source, please install a separate AC breaker between

inverter and AC input power source. This will ensure the inverter can be securely disconnected during

maintenance and fully protected from over current of AC input.

CAUTION!! There are two terminal blocks with “IN” and “OUT” markings. Please do NOT mis-connect input

and output connectors.

WARNING! All wiring must be performed by qualified personnel.

WARNING! It's very important for system safety and efficient operation to use appropriate cable for AC input

connection. To reduce risk of injury, please use the proper recommended cable size as below.

Suggested cable requirement for AC wires

Model Gauge Torque Value

3.6KW 12 AWG 1.2~ 1.6 Nm

5.6KW / 6KW

10 AWG

1.2~ 1.6 Nm

Please follow below steps to implement AC input/output connection:

1. Before making AC input/output connection, be sure to open DC protector or disconnector first.

2. Remove insulation sleeve 10mm for six conductors. And shorten phase L and neutral conductor N 3 mm.

3. Insert AC input wires according to polarities indicated on terminal block and tighten the terminal screws. Be

sure to connect PE protective conductor ( ) first.

→Ground (yellow-green)

L→LINE (brown or black)

N→Neutral (blue)

WARNING:

Be sure that AC power source is disconnected before attempting to hardwire it to the unit.

4. Then, insert AC output wires according to polarities indicated on terminal block and tighten terminal screws.

Be sure to connect PE protective conductor ( ) first.

→Ground (yellow-green)

L→LINE (brown or black)

N→Neutral (blue)

5. Make sure the wires are securely connected.

PV Connection

CAUTION: Before connecting to PV modules, please install separately a DC circuit breaker between inverter

and PV modules.

WARNING! All wiring must be performed by qualified personnel.

WARNING: Please switch off the inverter before you connect PV modules. Otherwise, it will damage the

inverter.

WARNING! It's very important for system safety and efficient operation to use appropriate cable for PV

module connection. To reduce risk of injury, please use the proper recommended cable size as below.

Model

Typical Amperage

Cable Size

Torque

3.6KW

18A

12AWG

2.0~2.4Nm

5.6KW / 6KW

27A

10AWG

2.0~2.4Nm

PV Module Selection:

When selecting proper PV modules, please be sure to consider below parameters:

1. Open circuit Voltage (Voc) of PV modules do not exceed max. PV array open circuit voltage of inverter.

2. Open circuit Voltage (Voc) of PV modules should be higher than min. battery voltage.

Solar Charging Mode

INVERTER MODEL 3.6KW 5.6KW 6KW

Max. PV Array Open Circuit Voltage

500 Vdc

450 Vdc

500 Vdc

PV Array MPPT Voltage Range 120~430Vdc

MPP Number

CAUTION:Appliances such as air conditioner are required at least 2~3 minutes to restart because it’s required

to have enough time to balance refrigerant gas inside of circuits. If a power shortage occurs and recovers in a

short time, it will cause damage to your connected appliances. To prevent this kind of damage, please check

manufacturer of air conditioner if it’s equipped with time-delay function before installation. Otherwise, this

inverter/charger will trig overload fault and cut off output to protect your appliance but sometimes it still causes

internal damage to the air conditioner.

CAUTION: Important

Be sure to connect AC wires with correct polarity. If L and N wires are connected reversely, it may cause utility

short-circuited when these inverters are worked in parallel operation.

Please follow below steps to implement PV module connection:

1. Remove insulation sleeve 10 mm for positive and negative conductors.

2. Check correct polarity of connection cable from PV modules and PV input

connectors. Then, connect positive pole (+) of connection cable to positive

pole (+) of PV input connector. Connect negative pole (-) of connection

cable to negative pole (-) of PV input connector.

Recommended PV module Configuration

PV Module Spec.

(reference)

- 250Wp

- Vmp: 30.7Vdc

- Imp: 8.15A

- Voc: 37.4Vdc

- Isc: 8.63A

- Cells: 60

Total solar input power

Solar input

Q'ty of modules

1500W 6 pieces in series 6 pcs

2000W 8 pieces in series 8 pcs

2750W 11 pieces in series 11 pcs

3000W 6 pieces in series

2 strings in parallel

12 pcs

4000W 8 pieces in series

2 strings in parallel

16 pcs

5000W 10 pieces in series

2 strings in parallel

20 pcs

6000W 12 pieces in series

2 strings in parallel

24 pcs

Final Assembly

After connecting all wirings, please put bottom cover back by screwing two screws as shown below.

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