LG Chem 6.4 EX User 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guration concepts 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 PackageItems ............................. 5
Mainbatterypack........................... 5
Expansion battery pack . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 LEDIndicators............................. 7
Mainbatterypack........................... 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 SafetyGear............................... 12
2.4 WarningLabels ............................ 13
Mainbatterypack........................... 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 MainBatteryPack........................... 32
4.2 Expansion Battery Pack . . . . . . . . . . . . . . . . . . . . . . . . 33
5 Emergency Situations 34
5.1 LeakingBatteries ........................... 34
5.2 Fire ................................... 34
5.3 WetBatteries.............................. 35
5.4 DamagedBatteries .......................... 35
6 Warranty 36
6.1 WarrantyCoverage .......................... 36
6.2 Limitation of Liability . . . . . . . . . . . . . . . . . . . . . . . . 36
6.3 Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . 36
A Technical Information 37
A.1 MainBatteryPack........................... 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

1Introduction
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 mounting1)
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
Status 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
StatusCharge/ Discharge
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 current1) 42 A
Nominal discharge current2) 42 A
Maximum discharge current3) 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 area1) 33 mm2to 50 mm2
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 temperature1) 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