LG Chem 6.4 EX Installation Manual

Residential Energy Storage Unit

6.4 EX Battery Pack

For Photovoltaic Systems

Installation Manual

September 2015 | Edition 2

This manual describes how to safely install the RESU®6.4 EX battery pack

from LG Chem.

Read this manual thoroughly before you attempt to install the product, and

follow the instructions carefully throughout the installation process.

If you are uncertain about any of the requirements, recommendations, or

safety procedures described in this manual, contact LG Chem immediately

for advice and clarication.

NOTE

The information included in this document is accurate at the time of publi-

cation. However, this product is subject to change without prior notice. In

addition, the illustrations in this document are meant only to help explain

system congurationconcepts and installation instructions. The illustrated

items may dier from the actual items at the installation location.

Contents

1 Introduction 5

1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2 Package Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Main battery pack . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Expansion battery pack . . . . . . . . . . . . . . . . . . . . . . . . 6

1.3 LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Main battery pack . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Expansion battery pack . . . . . . . . . . . . . . . . . . . . . . . . 7

1.4 Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2 Safety 11

2.1 General Precautions for the Battery Pack . . . . . . . . . . . . . . 11

2.2 Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.3 Safety Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.4 Warning Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Main battery pack . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Expansion battery pack . . . . . . . . . . . . . . . . . . . . . . . . 14

3 Installation 15

3.1 Installation Location . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.2 Installing the Main Battery Pack . . . . . . . . . . . . . . . . . . . 16

Securing the battery pack to a wall . . . . . . . . . . . . . . . . . 16

Connecting the battery pack to the inverter . . . . . . . . . . . . 18

3.3 Installing the Expansion Battery Pack . . . . . . . . . . . . . . . 22

Connecting an expansion pack to the main pack . . . . . . . . . 22

Securing the expansion pack to a wall . . . . . . . . . . . . . . . 27

3.4 Checking Before Operation . . . . . . . . . . . . . . . . . . . . . 29

Circuit breaker switch . . . . . . . . . . . . . . . . . . . . . . . . 29

Circuit breaker’s trip button . . . . . . . . . . . . . . . . . . . . . 29

Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

3.5 Starting the Battery Pack . . . . . . . . . . . . . . . . . . . . . . . 31

3.6 Shutting Down the Battery Pack . . . . . . . . . . . . . . . . . . . 31

4 Troubleshooting 32

3

Contents

4.1 Main Battery Pack . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

4.2 Expansion Battery Pack . . . . . . . . . . . . . . . . . . . . . . . . 33

5 Emergency Situations 34

5.1 Leaking Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

5.2 Fire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

5.3 Wet Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

5.4 Damaged Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . 35

6 Warranty 36

6.1 Warranty Coverage . . . . . . . . . . . . . . . . . . . . . . . . . . 36

6.2 Limitation of Liability . . . . . . . . . . . . . . . . . . . . . . . . 36

6.3 Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . 36

A Technical Information 37

A.1 Main Battery Pack . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

A.2 Expansion Battery Pack . . . . . . . . . . . . . . . . . . . . . . . . 39

A.3 Main Pack plus 1 Expansion Pack . . . . . . . . . . . . . . . . . . 39

A.4 Main Pack plus 2 Expansion Packs . . . . . . . . . . . . . . . . . 39

A.5 Compatible Inverters . . . . . . . . . . . . . . . . . . . . . . . . . 40

4

1 Introduction

1.1 Features

The RESU®6.4 EX battery pack has the following features:

Photovoltaic system: This battery pack is designed for photovoltaic system

compatibility.

Battery management system (BMS): The battery pack’s built-in BMS moni-

tors its operation and prevents the battery from operating outside design

limitations. See Troubleshooting on page 32.

Expandability: The battery capacity can be increased by adding expansion

battery packs. Up to two expansion battery packs can be added. An ex-

pansion battery pack can be purchased either with the main battery pack

or as a separate unit. See Installing the Expansion Battery Pack on page

22.

1.2 Package Items

Main battery pack

Items other than those listed below, such as a power cable, may be provided

separately.

Status

Charge / Discharge

RESU 6.4

R

Main battery pack Communication cable

adapter

Mounting brackets

For details on how these items are used, see Installation on page 15.

5

Introduction

NOTE

A tag is attached to the gender changer side of the provided communi-

cation cable adapter. The tag is labeled as TYPE-S or TYPE-N. TYPE-S

adapters are used with most inverters, including SMA inverters, whereas

TYPE-N adapters are supposed to be used only with Nedap inverters. If

the wrong cable adapter is identied, contact LG Chem or your distributor.

Expansion battery pack

Expansion battery pack Fuse Connecting brackets

Anchor bolt for mounting

1)

1)

When an expansion battery pack is later installed, if it is dicult to reuse the anchor bolt and

mounting bolt used on the right side of the main battery pack, use these bolts.

For details on how these items are used, see Installing the Expansion Battery

Pack on page 22.

6

Introduction

1.3 LED Indicators

Main battery pack

Sta

tus

Charge / Discharge

RESU 6.4

R

Status Charge / Discharge

RESU 6.4 EX

R

The LED indicators on the front of the main battery pack show its operational

state as follows:

Initializing : While the main pack is initializing itself, the Status indica-

tor is lit orange.

Normal operation : When the main pack is in normal operation, the Sta-

tus indicator is lit green.

Charge in progress : While the main pack is charging, the Charge / Dis-

charge indicator is lit red.

Discharge in progress : While the main pack is discharging, the Charge

/ Discharge indicator is lit green.

Alarm : When the main pack is in a warning or fault state, the Status

indicator alternately ashes green and orange. See Troubleshooting on

page 32.

Expansion battery pack

Status Charge / Discharge

RESU 6.4 EX

R

7

Introduction

The LED indicators on the front of the expansion battery pack show its oper-

ational state as follows:

Initializing : While the expansion pack is initializing itself, the Status in-

dicator is lit red.

Normal operation : When the expansion pack is in normal operation, the

Status indicator is lit green.

Standby : When the expansion pack is in the standby state, the Status

indicator ashes green. See Starting the Battery Pack on page 31.

Charge in progress : While the expansion pack is charging, the Charge /

Discharge indicator is lit red.

Discharge in progress : While the expansion pack is discharging, the

Charge / Discharge indicator is lit green.

Alarm : When the expansion pack is in a fault state, the Status in-

dicator alternately ashes green and red. See Troubleshooting on page

32.

1.4 Specications

Main battery pack’s dimensions and weight

Length 406 mm

Width 165 mm

Height 664 mm

Weight 60 kg

Expansion battery pack’s dimensions and weight

Length 230 mm

Width 165 mm

Height 664 mm

Weight 32 kg

8

Introduction

Statu

s

Charge / Di

s
c

harge

RESU 6.4

R

664

165

406

165

230

664

Performance

Nominal voltage 51.8 V

Operating voltage 45.2 V to 58.1 V

Nominal capacity with no expansion pack 126 A·h

Nominal capacity with 1 expansion pack 189 A·h

Nominal capacity with 2 expansion packs 252 A·h

Nominal energy with no expansion pack 6.4 kW·h

Nominal energy with 1 expansion pack 9.6 kW·h

Nominal energy with 2 expansion packs 12.8 kW·h

Nominal charge current

1)

42 A

Nominal discharge current

2)

42 A

Maximum discharge current

3)

110 A

1)

in constant-current/constant-voltage charging mode

2)

in constant-current discharging mode

3)

If the temperature inside the battery pack rises, the charging and discharging current may

be derated to keep the battery safety and lifetime.

9

Introduction

Power cable requirements

Conductor cross-sectional area

1)

33 mm2to 50 mm

2

Cable outer diameter 12 mm to 18 mm

Cable lug hole size M8

Cable lug width 21 mm

Maximum cable length 5 m per cable

1)

The external resistance of the power cable between the battery pack and the inverter must be

below 10 mΩ.

If these requirements cannot be met, contact LG Chem or your distributor.

Environmental requirements

Available operating temperature

1)

0°C to 40°C

Optimal operating temperature 15°C to 30°C

Operating relative humidity 25% to 95%

Storage temperature −30°C to 50°C

Storage relative humidity 25% to 95%

1)

When the ambient temperature is below 10°C, charging and discharging current may be de-

rated to keep the battery safety and lifetime.

Communication interface

Protocol CAN 2.0B

Channel 1

Fuse for the expansion pack

Model PV14 63A gG

Length 51 mm

Diameter 14 mm

Rated current 63 A DC

Rated voltage 250 V DC

Standards IEC 60269, EN 60269

10

2 Safety

2.1 General Precautions for the Battery Pack

WARNING

Failure to observe the precautions described in this section can cause seri-

ous injury to persons or damage to property.

Observe the following precautions:

• Risks of explosion

– Do not subject the battery pack to strong impacts.

– Do not crush or puncture the battery pack.

– Do not dispose of the battery pack in a re.

• Risks of re

– Do not expose the battery pack to temperatures in excess of 50°C.

– Do not place the battery pack near a heat source such as a replace.

– Do not expose the battery pack to direct sunlight.

– Do not allow the battery connectors to touch conductive objects such as

wires.

• Risks of electric shock

– Do not disassemble the battery pack.

– Do not touch the battery pack with wet hands.

– Do not expose the battery pack to moisture or liquids.

– Keep the battery pack away from children and animals.

• Risks of damage to the battery pack

– Do not allow the battery pack to come in contact with liquids.

– Do not subject the battery pack to high pressures.

– Do not place any objects on top of the battery pack.

11

Safety

2.2 Tools

The following tools are required to install the battery pack:

Torque screwdriver Phillips-screwdriver bit Hex-key bit

Phillips-head screwdriver Wire cutter Voltmeter

Tape measure

Use properly insulated tools to prevent accidental electric shock or short cir-

cuits. It is highly recommended to use adjustable tools and measuring instru-

ments that are certied for precision and accuracy.

2.3 Safety Gear

It is recommended to wear the following safety gear when dealing with the

battery pack.

Insulated gloves Safety goggles Safety shoes

12

Safety

2.4 Warning Labels

Main battery pack

The nameplate is attached to the right side of the main battery pack, and warn-

ing labels are attached to the top and left side.

Status

C
harge / Discharge

RESU 6.4

R

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Status

Charg

e /

Discharg

e

RE

SU 6.4

R

13