Sofar solar HYD 3K~6K-ES User manual

Shenzhen SOFARSOLAR Co., Ltd.
Energy storage integrated inverter
Product Model: HYD 3K~6K-ES
User manual

Contents
Preface............................................................................................................... II
1. HYD-ES inverter Introduction.................................................................. - 1 -
2. Safety Notes...............................................................................................- 2 -
2.1. Safety Notes....................................................................................- 2 -
2.2. Installation and Maintenance Notes................................................- 2 -
2.3. Signs on the inverter....................................................................... - 4 -
3. Installation................................................................................................. - 5 -
3.1. Product Overview........................................................................... - 5 -
3.2. Packing List.................................................................................... - 5 -
3.3. Installation Environment................................................................ - 8 -
3.4. Installation Tools.............................................................................- 8 -
3.5. Installation Position........................................................................ - 9 -
3.6. Mount HYD-ES inverter...............................................................- 10 -
4. Electrical Connection...............................................................................- 12 -
4.1. Battery Connection....................................................................... - 12 -
4.2. PV Connection.............................................................................. - 13 -
4.3. Inverter logic interface connection............................................... - 14 -
4.4. CT / CAN / RS485 / NTC connection.......................................... - 17 -
4.5. Grid Connection............................................................................- 19 -
4.6. Critical Load Connection (EPS function).....................................- 20 -
4.7. WiFi/GPRS/Ethernet module........................................................- 21 -
5. Buttons and indicator lights..................................................................... - 23 -
5.1. Buttons.......................................................................................... - 23 -
5.2. Indicator lights and status............................................................. - 23 -
6. Operation................................................................................................. - 24 -
6.1. Double Check............................................................................... - 24 -
6.2. First Time Setup (IMPORTANT!)................................................- 24 -
6.3. Commissioning............................................................................. - 28 -
6.4. Menu............................................................................................. - 28 -
7. Troubleshooting.......................................................................................- 46 -
8. Technical Data......................................................................................... - 54 -
9. Quality Assurance....................................................................................- 57 -

HYD 3K~6K-ES User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
I
Notice
This manual contains important safety instructions that must be followed
during installation and maintenance of the equipment.
Save these instructions!
This manual must be considered as an integral part of the equipment. The
manual must always accompany the equipment,even when it is transferred to
another user or field.
Copyright Declaration
The copyright of this manual belongs to Shenzhen SOFARSOLAR
Co.,Ltd.Any corporation or individual should not plagiarize, partially copy or fully
copy it (including software, ect .),and no reproduction or distribution of it in any
form or by any means.All right reserved.
SOFARSOLAR reserves the right of final interpretation.This manual is subject
to change according to user’s or customer’s feedback.Please check our website at
http://www.sofarsolar.com for latest version.
The current Version updated at 20210303.

HYD 3K~6K-ES User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
II
Preface
If you have any question or problem when you read the following
information, please contact Shenzhen SOFARSOLAR Co., Ltd.
Note
Outline
Please read the product manual carefully before installation,operation or
maintenance.This manual contains important safety instructions and installation
instructions that must be followed during installation and maintenance of the
equipment.
Scope
This product manual describes the installation,electrical connections,
commissioning,maintenance and troubleshooting of HYD 3K-6K-ES inverters:
HYD 3000-ES HYD 3600-ES HYD 4000-ES
HYD 4600-ES HYD 5000-ES HYD 6000-ES
Keep this manual where it will be accessible at all times.
Target Group
This manual is intended for qualified electrical technical personnel who are
responsible for inverter installation and commissioning in the PV power system and
PV plant operator.
Symbols Used
This manual is provides safety operation information and uses the symbol in
order to ensure personal and property security and property security and use
inverter efficiently when operating the inverter. You must understand these
emphasized information to avoid the personal injury and property loss.Please read
the following symbols used in this manual carefully.

HYD 3K~6K-ES User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
III
Danger indicates a hazardous situation which, if not
avoided, will result in death or serious injury.
Danger
Warning indicates a hazardous situation which, if not
avoided, could result in death or serious injury.
Warning
Caution indicates a hazardous situation which, if not
avoided, could result in minor or moderate injury.
Caution
Attention indicates potential risks which, if not
avoided, may lead to equipment fault or property damage.
Attention
Note provides tips that are valuable for the optimal
operation of the product.
Note

HYD 3K~6K-ES User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
- 1 -
1. HYD-ES inverter Introduction
The HYD-ES hybrid inverter is used in PV system with battery storage.
Energy produced by the PV system will be optimized for maximum
self-consumption.
The HYD-ES inverter can work in auto or time-of-use (TOU) mode, charge /
discharge the battery when needed. In auto mode, the HYD-ES inverter will charge
surplus PV energy into the battery & discharge battery to supply power to local
load when PV energy is not enough.
In case of blackout, HYD-ES inverter can work in Emergency Power Supply
(EPS) mode. HYD-ES inverter will utilize power from PV panels & energy stored
in the battery to supply power to critical load.
Fig.1-1 HYD-ES inverter schematic diagram

HYD 3K~6K-ES User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
- 2 -
2. Safety Notes
Before installation, please make sure you read & understand this manual. The
HYD-ES inverter strictly comply with safety rules of design and testing. During the
installation, operation and maintenance, operators should abide by local safety
regulations. Improper operation may cause an electric shock or damage the
equipment and properties.
2.1. Safety Notes
Electrical installation and maintenance must be carried out by competent
electricians according to local regulations.
HYD-ES inverter can only be installed by qualified electrician, and only those
who have appropriate accreditation, as required by local authority.
Do NOT put explosives or flammable materials, e.g. gasoline, kerosene, diesel,
oil, wood slab, cotton, or rag close to batteries or HYD-ES inverter.
Disconnect AC connection first, then disconnect battery & PV(PV1&PV2),
then wait at least 5 minutes (discharge capacitors) before maintenance to
prevent electric shock.
HYD-ES inverter shall be disconnected completely (BAT, PV & AC) while
being maintained.
HYD-ES inverter can be very hot during working. Switch off HYD-ES
inverter & wait HYD-ES inverter to cool down before maintenance.
Keep children away from batteries & HYD-ES inverter.
It’s NOT allowed to open the front cover of HYD-ES inverter. This will void
the product warranty.
HYD-ES inverter damaged by improper installation/operation is NOT covered
by the product warranty.
2.2. Installation and Maintenance Notes
The battery has been charged more than 60% before being delivered and shall
be prevented from short circuit during transportation and installation.
HYD-ES inverter/batteries shall be placed in a well-ventilated place. Do not

HYD 3K~6K-ES User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
- 3 -
put the HYD-ES inverter/batteries in an airtight or badly ventilated place or
cabinet. This can be very harmful to system performance & service life.
Keep HYD-ES inverter/batteries away from direct sunshine. Don’t put
HYD-ES inverter/batteries close to a furnace or fire. The can lead battery to
leak even explode.
The current capacity of DC power cables (from battery to inverter) should be
at least 90A. Use short DC power cables to avoid high voltage drop & power
loss.
Use a multimeter to check the batter voltage & polarity before switching ON
batteries. Make sure connections are correct according to this manual.
Use a multimeter to check the PV voltage & polarity before switching ON PV
isolator. Make sure connections are correct according to this manual.
If you want to store the batteries without using them, they should be
disconnected from HYD-ES inverter, and be kept in a cool, dry, and ventilated
environment.
Battery maintenance operators shall have the knowledge and technical skill
for battery maintenance;
All batteries connected in parallel should be of the same model and have same
firmware version. This is a design issue needs to be considered by
designer/installer, particularly when replacing batteries or modifying an
existing energy storage system.
HYD-ES inverter is transformer-less, therefore the positive pole and negative
pole of the PV array are NOT grounded. Otherwise it will cause inverter
failure. In the PV system, all non-current carrying metal parts (such as: PV
module frame, PV rack, combiner box enclosure, inverter enclosure) should
be connected to earth.
Warning: Do not disassemble or break the battery. Its electrolyte can be toxic
and damage your skin and eyes.
Warning: follow the following rules during battery installation/maintenance.
a. Take off your watch, ring, and other metal objects.
b. Only use tools with insulated handles.
c. Wear rubber gloves and shoes.
d. Do not put tools or metals above the battery.
e. Switch off HYD-ES inverter & batteries before connecting / disconnecting
battery terminals.

HYD 3K~6K-ES User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
- 4 -
f. Battery positive/negative poles should be isolated from ground.
2.3. Signs on the inverter
There are some symbols which are related to security on the inverter. Please
read and understand the content of the symbols before system installation.
This symbol indicates a hazardous situation which could result
in injuries, if not avoided.
Risk of Electric Shock and wait at least 5 mins after switching
OFF HYD-ES inverter.
Be careful of high voltage and electric shock.
Be careful of hot surface.
Comply with the Conformity Europeanness (CE) certification.
Earth terminal.
Please read this manual before installing HYD-ES inverter.
This indicates the degree of protection of the equipment
according to IEC standard 70-1 (EN 60529 June 1997).
Positive pole and negative pole of the DC voltage (PV &
Battery).
This side up, HYD-ES inverter must always be transported,
handled and stored in such a way that the arrows always point
upwards.
RCM (Regulatory Compliance Mark)
The product complies with the requirements of the applicable
Australian standards.

HYD 3K~6K-ES User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
- 5 -
3. Installation
3.1. Product Overview
HYD-ES inverter is 100% strictly inspected before package and delivery. It is
forbidden to put the HYD-ES inverter upside down during delivery.
Please check the product package and fittings carefully before
installation.
Caution
Fig.3-1 HYD-ES inverter overview
1
DC switch
7
Load connection port
2
Battery input terminals
8
Grid connection port
3
PV input terminals
9
LCD
4
Wi-Fi/GPRS stick
10
Breather valve
5
BMS communication port
11*
DC switch lock（For Australian
models）
6
Current transformer port
*Note: Lock the screw to limit the torque of the DC switch, making it
impossible to twist the DC switch from OFF to ON, or ON to OFF.Remove the
screw before turning the DC switch from OFF to ON or ON to OFF.
3.2. Packing List
Inspect the package and fittings carefully before installation. You should have
the following fittings:

HYD 3K~6K-ES User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
- 6 -
Table3-1 Components and mechanical parts that should be delivered
NO.
Picture
Description
Quantity
1
Inverter
1pcs
2
Mounting Bracket
1pcs
3
AC terminal
6pcs
4
M5 screw
2pcs
5
Battery terminal
2pcs
6
M6 flat washer
10pcs
7
Self-tapping screw
8pcs
8
Expansion bolts
8pcs
8
Terminal cap
2pcs
9
CT terminal
3pcs
10
CT
1pcs

HYD 3K~6K-ES User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
- 7 -
11
Communication cable
1pcs
12
NTC×1 (Long-3M)
1pcs
13
PV+ input terminal
2pcs
14
PV- input terminal
2pcs
15
Metal terminals secured
to PV+ input power
cables
2pcs
16
Metal terminals secured
to PV- input power
cables
2pcs
17
User Manual
2pcs
18
Warranty card
1pcs
19
Quality Certificate
1pcs

HYD 3K~6K-ES User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
- 8 -
20
Outgoing inspection
report
1pcs
18
M4X14 Cross round
head triple set screw（Only for
DC switch lock）
1pcs
3.3. Installation Environment
Choose a dry, clean, and tidy place, convenient for installation
Ambient temperature range: -25℃ ~ 60℃
Relative humidity: 0 ~ 100% (non-condensed)
HYD-ES inverter shall be installed in a well-ventilated place
No flammable or explosive materials close to HYD-ES inverter
The AC overvoltage category of HYD-ES inverter is category III
Maximum altitude: 2000m
3.4. Installation Tools
The following tools shall be prepared before installation:
No.
Tool
Model
Function
1
Hammer drill
Recommend
drill dia.6mm
Used to drill holes on the wall
2
Screwdriver
wiring
3
Wire stripper
Strip wire
4
4mm Allen Key
Turn the screw to connect rear panel with
inverter

HYD 3K~6K-ES User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
- 9 -
5
Crimping tools
Used to crimp power cables
6
Multi-meter
Used to check grounding
7
Marker pen
Used to mark signs
8
Measuring tape
Used to measure distances
9
Level
Used to ensure that the rear panel is properly
installed
10
ESD gloves
Operators wear
11
Safety goggles
Operators wear
12
Anti-dust
respirator
Operators wear
3.5. Installation Position
HYD-ES inverter should be vertically mounted (to ensure fast heat
dissipation), please choose a position without direct sunlight / snow accumulation
to install HYD-ES inverter. Please the installation position is well-ventilated.
Fig. 3-2 Installation Position of HYD-ES inverter

HYD 3K~6K-ES User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
- 10 -
3.6. Mount HYD-ES inverter
Fig. 3-3 Mount HYD-ES inverter

HYD 3K~6K-ES User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
- 11 -
Step 1: Put the mounting bracket properly on the wall, mark these 8 drill
holes using a marker pen. Drill 8 holes (drill bit 6mm) on the wall.
Step 2: Insert the expansion screw vertically into the hole, note the insertion
depth. (not too shallow or too deep)
Step 3: Fix the mounting bracket on the wall using bolts & flat washers.
Step 4: Put HYD-ES inverter on the mounting bracket.
Step 5: Earth HYD-ES inverter using the grounding hole on the heat sink.
Step 6: OPTIONAL: you can lock HYD-ES inverter to the mounting bracket.

HYD 3K~6K-ES User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
- 12 -
4. Electrical Connection
High voltages in power conversion circuits. Lethal hazard of electric
shock or serious burns.
All work on the PV modules, inverters, and battery systems must be
carried out by qualified personnel only.
Wear rubber gloves and protective clothing (protective glasses and
boots) when working on high voltage/high current systems such as
INVERTER and battery systems.
Caution
HYD-ES inverter is intended to be used in PV system with battery
storage. If not used as intended, the protection provided by the equipment
may be impaired.
Caution
Fig. 4-1 Electrical connections
4.1. Battery Connection
Fig. 4-2 Battery connection (Measure battery wires polarity/voltage before connection)

HYD 3K~6K-ES User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
- 13 -
Step 1: Loosen 4 screws (A) using a screwdriver (Fig. 4-2);
Step 2: Remove the waterproof cover (B), loosen the cable gland (C), and
then remove the stopper (G);
Step 3: Route the battery wires (F) through the cable gland, then connect
battery wires using OT terminal (E);
Step 4: Fasten the waterproof cover using 4 screws.
4.2. PV Connection
Table4-1 Recommended DC input cable specifications
Cross-Sectional Area (mm2)
External Cable Diameter(mm2)
Range
Recommended Value
4.0~6.0
4.0
4.5~7.8
Procedure:
Step 1 Prepare PV positive and negative power cables.
Step 2 Insert crimped PV positive and negative power cables into
corresponding PV connectors.
Step 3 Make sure the DC voltage of each PV string is less than 600V DC and
polarities of PV power cables are correct. Insert the positive and negative
connectors into HYD-ES inverter until you hear a "click" sound, as shown in
Fig.4-3③.
Fig.4-3 Connect Battery&PV connectors

HYD 3K~6K-ES User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
- 14 -
1. Positive metal contact
2. Negative metal contact ①
②
3. Positive connector
4. Negative connector ③
④
⑤
⑥
Disconnect PV connectors
⑦
Before removing the PV positive and negative connectors, ensure
that the DC SWITCH is OFF.
Caution
4.3. Inverter logic interface connection
Step 1: Loosen 4 screws (A) using a screwdriver (fig. 4-4①);
Step 2: Remove the waterproof cover (B),Loosen the cable gland (C), and
then remove the stopper (G);
Step 3: Press the wire terminals in color sequence;

HYD 3K~6K-ES User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
- 15 -
Step 4: Route Cable terminal through the cable gland, Insert the
communication cable into the RJ45 connector;
Step 5: Fasten the waterproof cover using 4 screws.
Fig.4-4 Logic interface
①
②
③
1.White and orange
2.Orange
3.White and green
4.Blue
5.White and blue
6.Green
7.White and brown
8.Brown
④
The logic interface pin definitions and circuit connections are as follows:
Logic interface pin are defined according to different standard requirements
（a）Logic interface for AS/NZS 4777.2:2015, also known as inverter demand
response modes (DRMs).
The inverter will detect and initiate a response to all supported demand
response commands within 2 s. The inverter will continue to respond while the
mode remains asserted.
Table 4-2 Function description of the DRMs terminal
Pin NO.
Color
Function
1
White and orange
DRM1/5
2
Orange
DRM2/6
3
White and green
DRM3/7
4
Blue
DRM4/8