Zeus Appollo Z21 Series User manual

Phone: [phone]
350-00108-03
Beijing Hua Xin Liu He Investment (Australia) Pty Ltd.
Brisbane Office
32 Cr
Banyo, QLD 4014
ockford Street
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Perth Office
1/87 President Street
Welshpool, WA 6106
Phone: [phone]
Fax: [phone]
Email: [e-mail]
USER MANUAL
Z21 Series

1 Introduction
2 Important Safety Warning
3 Installation
4 Electrical Connection
5 LED Lights Illustration
6 Z21Manage Illustration
7 Work Modes
Error Messages8
9 Technical Parameters
10 Certificates
3.1 Packing List
3.2 Product Overview
3.3 Selecting The Mounting Location
3.4 Mounting
.. .......................... ............ 03
. ......................... ....... 03
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........................................... 05
............................................................... 16
.......................................................................................... 01
..... ......................................................................... ............ 17
......... ..... ............................ ............................ ............ 18
.... ................................................ ............ 19
......... .......................................................................... ............ 21
4.1 AC Output Connection
4.2 PV Connection
4.3 Battery Connection
4.4 RS-485 Connection
4.5 EzMeter Connection
4.6 EzConverter Connection (optional)
4.7 Wi-Fi Connection
4.8 Wi-Fi Reset & Reload
4.9 USB Connection
4.11 Processing method of batteries connect
multiple inverters
4.10 System Connection Diagram
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. ...... ................. . ............ 07
...... ............. ............ 08
...... .............. ............ 09
...... ............ ............ 10
.......... 11
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...... ........... ............ 13
.... .. .......... ....... ............ 14
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2.1 Symbols
2.2 Safety
. ................................ ............ 01
............... ......................... ....... 02
................. 14
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1 Introduction
Before operation, please read all instructions and warnings on the unit and in this manual. Please keep the manual where
it can be accessed easily.
The Z21 series inverter marketed by the Beijing Hua Xing Liu He Investment(Australia)Pty Ltd. (hereinafter referred to as Zeus Appollo
Solar) strictly conforms to all related safety requirements during design and testing phases.
Safety regulations relevant to the installation location shall be followed during installation, operation and maintenance.
Improper operation may result in a risk of electric shock or damage to the equipment and/or property.
01
2 Important Safety Warning
02
Caution!
Failure to observe a warning indicated in
this manual may result in injury.
Danger of high voltage and electric shock!
Danger of hot surface!
Components of the product can be recycled.
This side up; the package must always be
transported, handled and stored in such a way
that the arrows always point upwards.
No more than six (6) identical packages may
be stacked on each other.
Zeus Appollo Solar Z21 series hybrid inverters are bidirectional which enables the PV system to direct excess power to a battery
storage facility.
Energy produced by the PV system is designed to optimize consumption; excess energy is used to charge the batteries, and when
fully charged power is then fed into the public grid.
When PV energy output is insufficient to support the connected loads, the system automatically draws power from the batteries if
they are charged and available. If the battery capacity is insufficient to meet consumption requirements, power will be automatically
sourced from the public grid.
Zeus Appollo Solar Z21 series inverter is designed for both indoor and outdoor use.
Figure 1-1 Basic hybrid PV system overview
2.1 Symbols
Product should not be disposed as
household waste.
CE Mark
Keep dry; the package/product must be
protected from excessive humidity and must be
stored under cover.
Signals danger due to electrical shock and indicates the time (5 minutes) to allow after the
inverter has been turned off and disconnected to ensure safety in any installation operation.
The package/product should be handled
carefully and never be tipped over or slung.
2.2 Safety
● Installation, maintenance and connection of inverters must be performed by qualified personnel, in compliance with local electrical
standards, wiring rules and the requirements of local power authorities and/or companies (for example : AS 4777 and AS/NZS
3000 in Australia).
● To avoid electric shock, DC input and AC output of the inverter must be terminated at least 5 minutes before performing any
installation or maintenance.
● The temperature of some parts of the inverter may exceed 60℃ during operation. To avoid being burnt, do not touch the inverter
during operation. Let it cool before touching it.
● Ensure children are kept away from inverters.
● Do not open the front cover of the inverter. Apart from performing work at the wiring terminal (as instructed in this manual),
touching or changing components without authorization may cause injury to people, damage to inverters and may void the
warranty.
● Static electricity may damage electronic components. Appropriate procedures must be adopted to prevent such damage to the
inverter; otherwise the inverter may be damaged and the warranty will be voided.
● Ensure the output voltage of the proposed PV array is lower than the maximum rated input voltage of the inverter; otherwise the
inverter may be damaged and the warranty will be voided.
● When exposed to sunlight, the PV array generates dangerous high DC voltage. It will cause potential danger to people. Please
strictly follow the instruction provided.
● PV modules should have an IEC61730 class A rating.
● If the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be
impaired.
● To completely isolate the inverter: switch off the DC switch, disconnect the PV terminal, disconnect the battery terminal, and
disconnect the AC terminal.
● Completely isolate the inverter before maintenance. Do not service other areas of the inverter when undertaking maintenance!
● Do NOT insert or extract the AC and DC terminals when the inverter is in operation.
● In Australia, the inverter internal switching does not maintain the neutral integrity, neutral integrity must be addressed by external
connection arrangements like the example proposed in the diagram 4.10.
● In Australia, the output of backup side in switchbox should be labeled 'main switch UPS supply', the output of normal load side in
switchbox should be labeled 'main switch inverter supply'.

03 04
Wall-mounted
Bracket×1
Inverter×1Positive DC Plug×2
or
Negative DC
Plug×2
or
Figure 3.3-1
3.2 Product Overview
1 2 3 4
5
9
6 7
Mounting location should be selected based on the following aspects:
● The installation method and mounting location must be suitable for the inverter's weight and dimensions.
● Mount on a solid surface.
● Select a well-ventilated location sheltered from direct sunlight.
● Install vertically or tilted backward a maximum of 15°. Under no circumstances should the inverter be installed with a sideways
tilt. The connection area must point downwards. Refer to Figure 3.3-1.
Battery cover × 1
EzMeter × 1
EzConverter
(optional) × 1
AC cover × 1 AC terminal × 6 Battery terminal × 2
● To facilitate heat dissipation and convenient dismantling, the minimum clearances around the inverter should be no less than the
following:
Upward ----------300mm
Downward--------500mm
Front-------------300mm
Both sides---------500mm
Figure 3.3-2
300mm
500mm
500mm 500mm 300mm
User Manual×1
User
manual
Quick Installation
Guide×1
Warranty
Card
Wi-Fi Connection
Guide×1
Wi-Fi Connection
Configuration
Warranty card×1
Instruction
of
Fast
Installation
3.3 Selecting The Mounting Location
●
● For the accessibility of monitoring the LED lights and possible maintenance activities, please install the inverter at eye level.
● Inverters should NOT be installed near inflammable and explosive items. Any strong electro-magnetic equipment should be kept
away from installation site.
● The product label and the warning symbol must be visible after installation.
● Please avoid direct sunlight, rain exposure, or snow accumulation when locating the installation point.
In order to achieve optimal performance, the ambient temperature should be less than 45 °C.
Direct Sunlight Rain Exposure Snow Lay up
No direct sunlight No Rain Exposure No Snow Lay up
3.1 Packing List
3 Installation
Before installation, please inspect the unit. Be sure that nothing inside the package is damaged. You should have received the
following items inside of the package:
1. Battery input
2. PV input terminals
3. DC Switch (Optional)
4. Wi-Fi antenna port
5. USB port
6. RS-485 port
7. Back-Up port
8. On-Grid port
9. LED lights
terminals
8
Expansion Bolts×6Hexagon head
screw × 2 Pan head screw × 8
Antenna×1
Max
15°

05 06
Grade Description
A O.D.
B
C Bare Wire Length
Figure 4.1-1
AB
C
AB
C
4 Electrical Connection
4.1 AC Output Connection
Conductor Material
Sectional Area
Value
11~12mm
2
6mm
10mm around
Before connecting to the grid and the load, please install a separate AC breaker (250VAC/30A) between the inverter and
the grid. This will ensure the inverter can be securely disconnected during maintenance.
It's very important for system safety and efficient operation to use appropriate cable for the AC connection. To reduce risk
of injury, please use the suitable recommended cable size. Refer to Figure 4.1-1.
Please adhere to the following steps when making an AC connection:
(1) Check the grid voltage and frequency at the connection point of the inverter. It should meet the Zeus Appollo Solar products'
specification.
(2) Measure the impedance between neutral cable and earth cable, make sure it does not exceed 10 ohms.
(3) Disconnect AC breaker between the inverter and the Grid.
(4) Disconnect the screw cap from the insulator.
(5) Disconnect waterproof ring from insulator.
(6) Feed the cable through the components in this order: screw cap,waterproof ring, insulator, AC cover and AC terminal.
Refer to Figure 4.1-2.
(7) Compress the terminal head using an appropriate tool and screw down the screw cap slightly. Refer to Figure 4.1-3, Figure 4.1-4.
(8) Insert AC terminals into the corresponding holes and fasten them by a screwdriver (Suggestion: diameter of the cutter bar is 4mm,
torsion:8~12Kg-f.cm), then fasten the AC cover with pan head screws in the accessory bag. Refer to Figure 4.1-5, Figure 4.1-6,
Figure 4.1-7.
(9) Screw down the screw cap again.
Figure 4.1-2 Figure 4.1-3
Cable Waterproof ring AC cover AC terminal
Screw cap Insulator Crimp
Figure 4.1-4
Cable core section after crimp
Figure 4.1-7
Figure 4.1-5
L----line N----neutral PE----earth
back-up terminal grid terminal
Figure 4.1-6
Figure 3.4-3 Figure 3.4-4
a
detail a
detail b
Figure 3.4-1 Figure 3.4-2
457mm
229mm
117mm
105mm
400mm
Remember that this inverter is heavy! Please be careful when removing from the packaging.
1. Use the wall-mounted bracket as a template and drill 6 holes on the wall, 10mm in diameter and 80mm deep.
Refer to Figure 3.4-1.
2. Fix the wall-mounted bracket on the wall with six expansion bolts in the accessory bag.
3. Carry the inverter by holding the heat-sink two sides. Refer to Figure 3.4-2.
4. Place the inverter on the wall-mounted bracket. Refer to Figure 3.4-3, Figure 3.4-4.
3.4 Mounting
b
Pan head screw
AC terminal should be clamped properly,
this is very important！

Grade Description
A O.D.
B
C Bare Wire Length
Conductor Material
Sectional Area
Value
10~12mm
2
20~25mm
10mm around
0807
Figure 4.2-3
The installation instruction of SUNCLIX please refer to Figure 4.2-2.
Installation instruction of MC4 and H4 please refer to Figure 4.2-3.
Negative plug
Positive plug
Figure 4.2-2
Figure 4.3-1
AB
C
Compress by professional tool
Inverter side
4.3 Battery Connection
Before connecting to a battery, please install a separate DC breaker (120A) between the inverter and the battery. This will ensure the
inverter can be securely disconnected during maintenance.
● Be aware of electric shock and chemical hazards!
● It is a normal phenomenon that an electric arc occurs when connecting a battery to the inverter without the use of a DC breaker.
● It's very important for system safety and efficient operation to use an appropriate cable for the battery connection. To reduce the
risk of injury, please use the correct recommended cable size. Refer to Figure 4.3-1.
●
● Suggestion: The battery should be installed with the correct distance between each battery unit, for details please refer to the
battery manufacturer's user manual.
● The number of battery cells used will be determined by the customer depending on the required capacity, however the choice will
be limited to a total series voltage array of 48 V.
Please follow the steps below to implement battery connection:
(1) Check the nominal voltage of batteries. The nominal output voltage should meet Zeus Appollo Solar product Spec.
(2) Disconnect DC breaker between the inverter and the battery.
(3) Disconnect the screw cap from the insulator.
(4) Disconnect the waterproof ring from the insulator.
(5) Put the cable through the components in this order: screw cap, waterproof ring, insulator, battery cover and battery terminal.
Refer to Figure 4.3-2.
(6) Compress the terminal head using an appropriate tool and screw down the screw cap slightly. Refer to Figure 4.3-3, Figure 4.3-4.
(7) Insert the battery terminals into the corresponding apertures and fasten them with a screwdriver and a spanner, then fasten the
battery cover with the pan head screws provided in the accessory bag. Refer to Figure 4.3-5, Figure 4.3-6, Figure 4.3-7.
(8) Screw down the screw cap again.
(9) An earth wire terminal is set on the left side of the inverter. If necessary, it can be connected to earth wire. Refer to Figure 4.3-8
Suggestion: If the battery is to be installed internally, please refer to the battery manufacturer's user manual.
Positive plug
Negative plug
Inverter side
7mm
7mm
2
2.5~4mm
2
2.5~4mm
Figure 4.3-3
Crimp
Cable
Figure 4.3-2
Waterproof ring
Battery cover
Battery terminal
Screw cap
Insulator
SUNCLIX Series
Figure 4.2-1
There are two types of DC plugs, SUNCLIX and MC4 or H4 series. Please refer to Figure 4.2-1.
●
permanently damage the inverter.
·● Check the short-circuit current of the PV string. The total short-circuit current must not exceed the inverter’s maximum PV current.
·● The PV array should not be connected to the grounding conductor.
·● Please use the PV plugs provided in the accessory bag.
·● The minimum insulation resistance to the ground of the PV panels must exceed 19.33kΩ, There is a risk of electrical shock if
the total minimum resistance requirement is not met.
Before connecting the PV panels, ensure the plug connectors have the correct polarity. Incorrect polarity could
4.2 PV Connection
● Reversed polarity will damage the inverter!
or H4 Series
M
C4

09 10
The RS-485 interfaces are used for EzConverter and EzMeter communication. The cable length should not exceed 100m.
connection procedures for the RS485 please refer to chapter 4.5, chapter 4.6.
Please follow the steps below to implement the RS485 connection on the inverter side:
● Remove the RS-485 waterproof assembly from the inverter.
● Disconnect the screw cap from the insulator.
● Disconnect the waterproof ring from the insulator.
● Feed the cable through the components in this order: screw cap,waterproof ring, insulator, RS485 cover. Refer to Figure 4.4-1.
● Insert the cable wire into the corresponding slots in the crystal head and compress using an appropriate tool, then screw down the
cap slightly. Refer to Figure 4.4-1.
● Put the crystal head insert into the corresponding inner slots of the inverter.
● Fasten the RS-485 waterproof assembly to the inverter.
● Screw down the screw cap again.
For the
4.4 RS-485 Connection
Figure 4.3-4 Figure 4.3-5
Cable core section after crimp
+ ----red cable - ----black cable
Positive
terminal
Negative
terminal
Figure 4.3-6 Figure 4.3-7
Hexagon head screw Pan head screw
4.5 EzMeter Connection
The EzMeter may detect the current magnitude and direction, to control the working condition of the inverter. The
communication between the inverter and EzMeter is via an RS485. The cable length should not exceed 100m.
For the connection method of a single phase EzMeter, please refer to Figure 4.5-1.
Cable Waterproof ring RS-485 cover Crystal head
Screw cap Insulator
Figure 4.4-1
PIN
1
2
3
4
5
6
7
8
Colour
Orange/white
Orange
Green white/
Blue
Blue white/
Green
Brown white/
Brown
RS-485 waterproof assembly
RESERVED
RX RS-485B_
RX_RS-485A
TX RS-485B_
TX RS-485A_
Function
RESERVED
RESERVED
RESERVED
Figure 4.5-1
(red) (black)
earth wire terminal
Figure 4.3-8
PIN
1
2
3
4
5
6
7
8
RESERVED
RX RS-485B_
RX_RS-485A
TX RS-485B_
TX RS-485A_
Function
Colour
Orange white/
Orange
Green white/
Blue
Blue white/
Green
Brown white/
Brown
RESERVED
RESERVED
RESERVED
T568B
Load
Connection illustration of type 1 EzMeter
Grid
If constant blink,
connection ok.
EzMeter
(type 1)
NC
EzMeter port No.
Colour
Orange/white
Orange
Green white/
Blue
Blue white/
Green
Brown white/
Brown
5
5
6
6
NC
NC
NC
SET

PIN
1
2
3
4
5
6
7
8
RESERVED
RX RS-485B_
RX_RS-485A
TX RS-485B_
TX RS-485A_
Function
Colour
Orange white/
Orange
Green white/
Blue
Blue white/
Green
Brown white/
Brown
RESERVED
RESERVED
RESERVED
PIN
1
2
3
4
5
6
7
8
RESERVED
RX RS-485B_
RX_RS-485A
TX RS-485B_
TX RS-485A_
Function
Colour
Orange white/
Orange
Green white/
Blue
Blue white/
Green
Brown white/
Brown
RESERVED
RESERVED
RESERVED
RS-485
Figure 4.6-1
Battery
Li-Ion
T568B
PIN
1
2
3
4
5
6
7
8
RESERVED
RX RS-485B_
RX_RS-485A
TX RS-485B_
TX RS-485A_
Function
Colour
Orange white/
Orange
Green white/
Blue
Blue white/
Green
Brown white/
Brown
RESERVED
RESERVED
RESERVED
PIN
1
2
3
4
5
6
7
8
RESERVED
RX RS-485B_
RX_RS-485A
TX RS-485B_
TX RS-485A_
Function
Colour
Orange white/
Orange
Green white/
Blue
Blue white/
Green
Brown white/
Brown
RESERVED
RESERVED
RESERVED
T568B
Switch State Function
Switch 1
Switch 2 Switch 3 Switch 4 Switch 5
OFF OFF OFF OFF OFF Reserved
OFF ON ON ON ON BMS communication protocol f Alpha
lithium battery
or
11 12
The connection method of a three phase EzMeter, refer to Figure 4.5-2.
Figure 4 5-2.
4.6 EzConverter Connection (optional)
It will be required to configure the EzConverter if a lithium battery is used in the system, to enable communication with
the battery BMS.
Communication between the inverter and the EzConverter is via an RS-485. Communication between the lithium battery
and the EzConverter can be via an RS-485 or CAN or an RS-232 (depending on the Li-Ion battery communication type). The
cable length should not exceed 2m.
Choose a corresponding switch circuit for the lithium battery, according to the switch protocol comparison table of the
lithium battery in the user manual.
● Lithium battery communication connects to an EzConverter via RS-485 interface if the protocol is RS-485.Refer to Figure 4.6-1.
● Lithium battery communication connects to an EzConverter via CAN interface if the protocol is CAN. Refer to Figure 4.6-2.
● Lithium battery communication connects to an EzConverter via RS-232 interface if the protocol is RS-232.Refer to Figure 4.6-3.
CAN
Figure 4.6-2
Battery
Li-Ion
T568B
RS-232
Figure 4.6-3
Battery
Li-Ion
T568B
Table . 4 6-1
Load
Connection illustration of type 2 EzMeter
if constant blink,
connection ok.
EzMeter
(type 2)
NC
EzMeter port No.
Colour
Orange/white
Orange
Green white/
Blue
Blue white/
Green
Brown white/
Brown
7
7
8
8
NC
NC
NC
Users don't need to operate EzMeter, make sure It can be used after the connection.
Grid

13 14
Figure 4.7-1
4.7 Wi-Fi Connection
Installing a connection between the antenna and the inverter. Refer to Figure 4.7-1.
4.8 Wi-Fi Reset & Reload
The Wi-Fi reload function is used to change the Wi-Fi configuration to a default value. Please reset the Wi-Fi according to
the Wi-Fi configuration illustration after using the function.
● Hold the touch switch for more than 5s and less than 8s until the LED Wi-Fi displays"Blink 0.5s on 0.5s off", then release it, and
the Wi-Fi reset process is finished. Refer to Figure 4.8-1.
● Hold the touch switch more than 20s and less than 30s until the LED Wi-Fi displays"Blink 0.5s on 0.5s off" twice, then release it
and the Wi-Fi reload process is finished. Refer to Figure 4.8-1.
Figure 4.8-1
Open USB cover
Touch switch
4.10 System Connection Diagram
Note: Not all overcurrent protection devices are included in diagram. this diagram is for Australia.
Switch Board
Grid
Back-Up
Zeus Z21 series
Hybrid Inverter
L
N
Solar
array
48V
Battery
L
N
PE
RCD
RCD
L
Main
Switch
E-N
Link
Normal Loads
LN
PE
E
L
N
PE
Grid
Ezmeter
RS-485
Back-Up
Loads
PE
N
4.9 USB Connection
The USB communication is used for firmware update only！
Please follow below Figure 4.9-1 to implement USB connection:
Figure 4.9-1
Open USB cover
Insert USB data cable
Working status of the EzConverter as below table 4.6-1.
TABLE4.6-1
Silk-Screen
Power
Inverter
RS-485
CAN
RCR
RS-232
LED Colour
Green
Yellow
Yellow
Yellow
Yellow
Yellow
EzCoverter Status Note
Powered on
Communicate with Inverter
Communication OK
Communication OK
Received command from RCR
Communication OK
LED Display Status
Constant on
Blink
Blink
Blink
Blink
Blink

15 16
6 Z21Manage Illustration
The Z21 Series inverter has no LCD screen, it can be controlled via mobile device with the APP software (Z21Manage).For IOS System,
please go to AppStore to search for ”Z21Manage”, then download and install it. For Android System, please go to google paly to
search for ”Z21Manage”, then download and install it. Besides, it can be also installed by scanning the QR code on the back cover.
When Z21 hybrid inverter is working, please use mobile devices to select the SSID of inverter (Factory defaults is Solar - WiFi, and
initial password is 12345678. If any questions, please refer to Wi-Fi Connection Guide). After accessing inverter’s Wi-Fi network, you
can open the App and operate the inverter.
5 LED Lights Illustration
SYSTEM BACK-UP SOLAR BATTERY GRID ENERGY Wi- FAULTFi
ON = SYSTEM IS READY
BLINK = SYSTEM IS STARTING UP
OFF = SYSTEM IS NOT OPERATING
ON = BACK-UP IS READY / POWER AVAILABLE
OFF = BACK-UP IS OFF / NO POWER AVAILABLE
ON = SOLAR INPUTS #1 AND #2 ARE ACTIVE
BLINK 1 = SOLAR INPUT #1 IS ACTIVE / #2 IS NOT ACTIVE
BLINK 2 = SOLAR INPUT #2 IS ACTIVE / #1 IS NOT ACTIVE
OFF = SOLAR INPUT #1 AND #2 ARE NOT ACTIVE
ON = BATTERY IS CHARGING
BLINK 1 = BATTERY IS DISCHARGING
BLINK 2 = BATTERY IS LOW / SOC IS LOW
OFF = BATTERY IS DISCONNECTED / NOT ACTIVE
ON = GRID IS ACTIVE AND CONNECTED
BLINK = GRID IS ACTIVE BUT NOT CONNECTED
OFF = GRID IS NOT ACTIVE
ON = CONSUMING ENERGY FROM GRID / BUYING
BLINK 1 = SUPPLYING ENERGY TO GRID / ZEROING
BLINK 2 = SUPPLYING ENERGY TO GRID / SELLING
OFF = GRID NOT CONNECTED OR SYSTEM NOT OPERATING
ON = Wi-Fi CONNECTED / ACTIVE
BLINK 1 = Wi-Fi SYSTEM RESETTING
BLINK 2 = Wi-Fi ROUTER PROBLEM
BLINK 4 = Wi-Fi SERVER PROBLEM
OFF = Wi-Fi NOT ACTIVE
ON = FAULT HAS OCCURRED
BLINK = OVERLOAD OF BACK-UP OUTPUT / REDUCE LOAD
OFF = NO FAULT
SYSTEM
BACK UP-
SOLAR
BATTERY
GRID
ENERGY
Wi-Fi
FAULT
INDICATOR EXPLANATION
STATUS
Load (n)
Load (2)Load (1)
battery
Grid
BreakerBreakerBreaker
Figure 4.11-1
4.11 Processing method of battery connect multiple invertersone
One single battery with large capacity connect multiple inverters
Advantages: when unbalance of demand and supply appears between loads and PV in a system, the more energy from the PV side will
be used in other loads, which achieves more energy for self-use.
Attention: Set the capacity of the battery as 1/n through Z21Manage, detail refer to 6.2(4) Battery Setting. For example, the Battery
capacity is 1000Ah, connect 4 inverters,each inverter should be setted 250Ah.
Suggestion: Put a breaker in every wire respectively when connect to the battery.
In any case, 2 inverters Back-Up port can not parallel, otherwise it will damage the inverter.
Ezmeter Ezmeter
Ezmeter
Green Blue Yellow RedGreen Blue Blue Yellow

17 18
7. Working Modes
The Z21 series inverters have the following main operating modes providing for different conditions:
Mode1：
Energy produced by the PV system is first used for the
local load, the excess energy is then used for charging
batteries, and then finally feeding into the grid.
Mode2：
If there are no PV panels, battery energy is used for the
local load first, the grid also can supply power when the
battery capacity is insufficient.
Mode3：
If the grid is faulty or there is no grid, the system can still
operate, PV panels and batteries supply energy for the
local load. There is a BACKUP port on the inverter for
emergency power supply.
Mode4：
The battery can be charged by the grid, charging time
and power can be set up adaptably.
An error message will be displayed on the APP if a fault occurs.
Table 8-1 is the Description of Error Message
Error message
Utility Loss
Fac Failure
PV Over Voltage
Over Temperature
Isolation Failure
Ground I Failure
Relay-Check Failure
DC Injection High
EEPROM R/W Failure
SPI Failure
DC Bus High
AC HCT Failure
GFCI Failure
Vac Failure
Battery Over Temperature
Battery Under Temperature
Battery Cell Voltage Differences
Battery Over Total Voltage
Battery Discharge Over Current
Battery Charge Over Current
Battery Under SOC
Battery Under Total Voltage
Battery Communication Fail
Battery Output Short
Description
Grid disconnected
Grid frequency no longer within permissible range
Overvoltage at DC input
Over temperature on the case
Ground insulation impedance is too low
Too high ground leakage current
Relay self-checking failure
Too high DC injection
Memory chip failure
Internal communication failure
Too high BUS voltage
Output current sensor failure
Detection circuit of ground leakage current failure
Grid voltage no longer within permissible range
Battery Over Temperature
Battery Under Temperature
Li-Ion Battery Cell Voltage Differences
Li-Ion Battery Over Total Voltage
Battery Discharge Over Current
Battery Charge Over Current
Battery Capacity Low
Battery Under Total Voltage
Battery Communication Fail
Battery Output Short
8 Error Messages
Table 8-1

19 20
9 Technical Parameters
Model
Category Ⅱ
SUNCLIX / MC4 (Optional)
Z21I4K8D48
5400
580
125~550
125
15/15
0
20
2
2(can parallel)
Lead-acid or Li-Ion
48
4600
2300, programmable
>=100 (depending requirement)
3-stage adaptive with maintenance
57V,programmable
included(Li-Ion)
integrated
integrated
4600
4600
1.5x Pnom, 10sec
20
30
Z21I3K6D48
4200
580
125~550
125
15/15
0
20
2
2(can parallel)
Lead-acid or Li-Ion
48
3600
2300, programmable
>=100 (depending requirement)
3-stage adaptive with maintenance
57V,programmable
included(Li-Ion)
integrated
integrated
3600
3600
1.5x Pnom, 10sec
16
24
99.9%
50/60Hz; 230Vac
45~55Hz/55~65Hz; 180~270Vac
230Vac ±2%, 50Hz (60Hz Optional)±0.2%, THDv<3%(linear load)
<1.5%
0.9 leading~0.9 lagging
Single phase
Category Ⅲ
97.6%
97.0%
97.6%
97.0%
*
Solar
Max. DC power(W)
Max. DC voltage (V)
MPPT voltage range (V)
Starting voltage (V)
Max. DC current (A)
DC overcurrent protection(A)
No. of DC connectors
No. of MPPTs
DC overvoltage category
DC connector
Battery
Battery Type
Norminal Voltage (V)
MAX Discharge power (W)
MAX Charge power (W)
Battery capacity (Ah)
Charging curve
Charging voltage
Battery temperature compensation
Battery voltage sense
Current shunt
AC Output Data
Norminal AC power(W)
Max. AC power(W)
Peak power (Back-up)(W)
Max. AC current(A)
AC overcurrent protection(A)
Norminal AC output
AC output range
AC output (Back-up)
THDi
Power factor
Grid connection
AC overvoltage category
Efficiency
Max. efficiency
Euro efficiency
MPPT adaptation efficiency
**
Max inverter backfeed current to
the array(A)
IEC62109-1&-2, AS3100, IEC62040-1
30 28
516*440*184mm 516*440*184mm
Protection
Residual current monitoring unit
Anti-islanding protection
DC switch(PV)
AC over current protection
Insulation monitoring
Certifications&Standards
Grid regulation
Safety
EMC
General Data
Dimensions (WxHxD)
Weight (kg)
Mounting
Ambient temperature range
Relative humidity
Moisture location category
Max. operating altitude
Protection degree
Environment category
External environment pollution degree
Topology
Standby losses(W)
Cooling
Noise emision(dB)
Display
Communication
Integrated
Integrated
Integrated (optional)
Integrated
Integrated
Wall-mounted
-25~60°C (>45°C derating)
0~95%
4K4H
2000m
IP65
Outdoor & indoor
Grade1, 2, 3
Transformerless
<8
Natural convention
<25
LED light & APP
USB2.0; RS485; Wi-Fi
Bracket
Model Z21I4K6D48 Z21I3K6D48
*
listed in the table.
**BACK-UP Load configure specification：
Inductive load: Single inductive load max power ≤1.5kW,Total inductive load power≤2.5kW;
For example :Such as Air conditioner、Washer、Electric motor etc is inductive load;
Capacitive Load :Total capacitive load power ≤3.0kVA;
For example :Such as computer、Switch power etc is capacitive load;
It is recommended that the total peak power of PV strings should not exceed 130% of maximum DC power of inverter
VDE4105, VDE 0126-1-1/A1,
G59/3, AS4777.2/.3
VDE4105, VDE 0126-1-1/A1,
G83/2, AS4777.2/.3
EN61000-6-1, EN61000-6-2, EN61000-6-3,
EN61000-6-4, EN61000-3-11, EN61000-3-12
EN61000-6-1, EN61000-6-2, EN61000-6-3,
EN61000-6-4, EN61000-3-2, EN61000-3-3

21
10 Certificates
Note
Overvoltage category definition
Category I : applies to equipment connected to a circuit where measures have been taken to reduce transient overvoltage to a
low level.
Category II : applies to equipment not permanently connected to the installation. Examples are appliances, portable tools and
other plug-connected equipment;
Category III: applies to fixed equipment downstream of and including, the main distribution board. Examples are switchgear
and other equipment in an industrial installation;
Category IV: applies to equipment permanently connected at the origin of an installation (upstream of the main distribution
board). Example are electricity meters, primary overcurrent protection equipment and other equipment connected
directly to outdoor open lines.
Environment category definition
Outdoor : the ambient air temperature is -20~50°C, relative humidity range is 4 % to 100 %, applied to PD3
Indoor unconditioned: the ambient air temperature is -20~50°C, relative humidity range is 5 % to 95%,applied to PD3
Indoor conditioned: the ambient air temperature is 0~40°C, relative humidity range is 5 % to 85%,applied to PD2
Pollution degree definition
Pollution degree 1: No pollution or only dry, non-conductive pollution occurs. The pollution has no influence.
Pollution degree 2: Normally only non-conductive pollution occurs. Occasionally, however, a temporary conductivity caused by
condensation must be expected.
Pollution degree 3: Conductive pollution occurs, or, dry, non-conductive pollution occurs which becomes conductive due to
condensation which is expected.
Pollution degree 4: Persistent conductive pollution occurs, for example, the pollution cause by conductive dust, rain and snow.
Moisture
parameters
Level
Temperature Range
Humidity Range
3K3
0~+40℃
5%~85%
4K2
-33~+40℃
15%~100%
4K4H
-20~ +55°C
4%~100%
Moisture location category definition
E932