Y H SUNT-3.6KW-H Sunt Hybrid Inverter Installation Guide

Y H SUNT-3.6KW-H Sunt Hybrid Inverter

Specifications

Grid tie model (with limit function)
AC grid rated voltage(Vac)| 220/230/240
AC grid voltage range| (170Vac ~ 265Vac) ±2%
AC grid frequency(Hz)| 45 – 55
Maximum grid tie power(W)| 3600| 5500
Overload/short circuit protection| | Yes
Maximum efficiency| >95%
THD| <3%
Conversion time (bypass and inverter)| | 10ms (Typical value)
Maximum bypass current(A)| 40
Limit function| Yes
On grid model
Rated input voltage(Vac)| 220/230/240
Input voltage range(Vac)| (170Vac ~ 265) ±2%
Input frequency(Hz)| 45 ~ 55
Overload/short circuit protection| | Yes
Conversion time (bypass and inverter)| | 10ms (Typical value)
Maximum bypass current(A)| | 40
Backup mode(Inverter)
Output voltage waveform| Pure sine wave
THD| <3%
Maximum output power(VA)| 3600| 5500
Maximum output power(W)| 3600| 5500
Max. Power factor| 1
Rated output voltage (Vac)| 230Vac
Output frequency range (Hz)| | 50Hz ± 0.2Hz
Efficiency| >93%
Overload protection| (102%<load<125%) ±10%: reporting error and turning o ff the output after 5 minutes;

(125%<load<150%) ±10%: reporting error and turning o ff the output after 10 seconds;

Peak power(VA)| 7200| 11000
Output short-circuit protection| | Yes
Battery voltage| 48V
Battery input voltage range| | 40.0Vdc ~ 60Vdc
AC charge
Battery type| Lead acid or lithium battery
Maximum charge current(A)| 50| 80
Charge voltage range| 40Vdc ~ 60Vdc
Overcharge protection| Yes
Solar charge|
Maximum PV open-circuit voltage| | 500Vdc
PV operation voltage range| 120-500Vdc
MPPT voltage range| 120 ~ 450Vdc
MPPT Efficiency| 99.9%
Battery voltage range| 40 ~ 60Vdc
Maximum PV power(W)| 4000| 6000
Maximum charge current(A)| 50| | 80
Charge short-circuit protection| | Yes
PV input reverse protection| Yes

SAFETY INSTRUCTIONS

WARNING! Life-Threatening Risks DUE TO FIRE OR ELECTROCUTION The SUNT Hybrid Inverter can only be installed by a qualified licensed electrical contractor. This is not DIY product.

• Be sure to read this manual thoroughly before installation
• Do not attempt to install the inverter by yourself. Installation work must be performed following national wiring standards by authorized personnel only. Do not turn on the power until all the installation work is completed
• Always use an individual power supply line protected by a circuit breaker and operating on all wires with a distance between contacts of at least 3mm for this unit.
• The unit must be correctly grounded and the supply line must be equipped with a suitable breaker and RCD for the protection of the operator.
• The unit is not explosion-proof, do not install the product in an explosive atmosphere. Never touch electrical components immediately after the power supply has been turned off since the system can still have residual energy, which may cause electric shock. Therefore after turning o the power, always wait for at least 5 minutes before touching electrical components.
• This unit contains no user-serviceable parts. Always consult an authorized contractor for repairs.

System Overview

Product Overview
The SUNT Hybrid Inverter is a highly efficient power management equipment that allows the user to hit those ‘parity’ targets by managing power flow from multiple sources such as solar, main electrical grids, generator, and effectively storing and releasing electric power to meet the demand of utility usage.

1. PV connectors
2. Battery input connectors
3. Power ON/OFF Switch
4. Inverter LED indicators
5. LCD display
6. Function buttons
7. AC output
8. AC input
9. Ground connection
10. WIFI port
11. Gen. connector
12. Circuit breaker
13. CAN bus port/ RS485 port
14. CT connector
15. GND

Basic System Architecture
The following illustration shows the basic application for this inverter/charger. It also includes the following devices to have a complete running system:

INTERAC TIVE

• Easy and simple-to-understand display
• Supporting Wi-Fi and Bluetooth
• Visual power flow screen
• Built-in MPPT Charger and AC Charger
• Smart settable 3-stage charging for optimized battery performance

3.4 COMPATIBLE

• Compatible with main electrical grid voltages or power generators
• On-grid, and off-grid pure sinewave inverter
• Auto restart while AC is recovering

CONFIGURABLE

• Fully programmable controller

• Programmable multiple operation modes: LIMIT function mode(Economic mode)
  No limit function mode( UPS mode)

• Configurable battery charging – current/voltage based on applications

• Charger and discharge work time control.

SECURE

• Overload/over-temperature/short-circuit protection
• Smart battery charger design for optimized battery protection /Battery overcharge and discharge protection.
• Limiting function installed to prevent excess power overflow to grid (“Zero export”)

APPLICATIONS

• Marine (vessel power management)
• Power shedding (home/office/factory)
• UPS (Uninterrupted Power Supply)
• Remote locations with solar and wind generators
• Building sites
• Military locations
• Telecommunication

Work Mode explanation:

1. Limit function mode(Economic mode)
   (Using peak cutting and valley filling to save money)
   According to the time coordinate, in the time period from “xx mains charge start time” to “ xx mains charge end time”, manis will charge the battery pack until the battery voltage reaches to “ mains charge target voltage”. This time period should be in low electric price time.
   From”xx battery discharge start time” to “ xx battery discharge end time”, the inverter will feed power to home load and the load connected to the AC output, the limit function should be available in this time period to limit the feed power never higher than total home load(after C T), to keep “Zero export”. This time period should be in high electric price time.
   The M P P T solar charger will work all time when the solar energy is available, in the
   “Solar power available period”, the solar energy will charge the battery pack in “mains charge“ period and will feed power to home grid in “the battery discharge” period. If the battery voltage is higher than the “ main charge target voltage”, then the solar energy will feed power to home grid arbitrarily, but the limit function will still be available. If the solar power is higher than the home load, the extra solar power will charge the battery pack too.

   • About the voltage of the battery pack:
   • Section “1”, “5” : Mains charge section. In these sections, the battery pack voltage will increase until reaches to “mains charge target voltage”.
   • Section “10”, Mains charge section. If the battery voltage is lower than the “battery discharge target voltage” after U P S function, it will be charged to “battey discharge target voltage” arbitrily. Section “2”, “4”, “8” and “11” : Keeping voltage section.
   • Section “6”: Solar energy feeds power to home grid and charges the battery pack. Section “3” and “7”: “battery discharge” section. In these sections, the battery pack voltage will decrease until reaches to “battery discharge target voltage”.
   • Section “9”: U P S function enabled section.
     The battery pack volume from “battery discharge target voltage” to “Low protect voltage” is for essential loads like Computers, or refrigerators that the AC power can’t be interrupted when the home grid is not available. If you have no essential loads, then you can set the “battery discharge target voltage” near to “Low protect voltage” to get more usable battery volume for charge and discharge. If you want to keep more battery volume for essential loads when the home grid is not available,you can set the “battery discharge target voltage” much higher. When the home grid is available, the AC output terminal is bypassed and connected to the home grid.

2. NO limit function mode(UPS mode)
   In this work mode, the inverter can only be discharged via AC output, and can’t feed the home grid, Under UPS, the inverter is only capable of powering essential loads that are connected with the AC output terminal.
   According to the time coordinate, in the time period from “xx mains charge start time” to “xx mains charge end time”, the home gird will charge the battery pack until the battery pack is fully charged, you also can set the 2nd mains charge time period, if you want to save electric charge money, the time periods should be in low electric price time.
   The MPPT solar charger will work all time when the solar energy is available, in the “Solar power available period”, the solar energy will charge the battery pack, If the battery pack is full, then the solar energy will power the essential loads connected with AC output terminal.

   • About the voltage of the battery pack:
   • Section “1”: Mains charge section.
   • Section “2” and “7”: keeping voltage section.
   • Section “3” and “6”: The battery pack is charged by solar energy.
   • Section “4”: Extrasolar energy powers the essential loads.
   • Section “5”: UPS function enabled section, the essential loads are powered by AC output.
     When the home gird is available, the AC output terminal is bypassed and connected to the home grid.

INSTALLATION

Parts List

DO NOT install the inverter in the following areas:

• Areas with high salt content, like the marine environment, will deteriorate metal parts, causing the parts to fail or the unit to leak water
• Areas filled with mineral oil or containing a large amount of splashed oil or steam, such as a kitchen. It will deteriorate plastic parts, causing the parts to fail or the unit to leak water.
• Areas that generate substances that adversely affect the equipment, such as sulfuric gas, chlorine gas, acid, or alkali. It will cause the copper pipes and brazed joints to corrode, which can cause refrigerant leakage.
• Areas that can cause combustible gas to leak, Contain suspended carbon-fiber or flammable dust, or volatile inflammable such as paint thinner or gasoline.
• Areas where there may be gas leaks and settles around the unit. It can cause fires.
• Areas where animals may urinate on the unit or ammonia may be generated.
• High altitude areas above 4000 meters above sea level.
• Environments where precipitation or humidity are above 95%
• Areas where the air circulation is too low.

Please be advised:

• Install the indoor unit, outdoor unit, power supply cable, transmission cable, and remote control cable at least 1 meter（3.3 feet）away from a television or radio receivers. This will prevent TV reception interference or radio noise. Even if they are installed more than 1m apart, it is still possible to receive noise under some signal conditions.
• If children under 10 years old may approach the unit, take Precautions against the children from reaching the unit
• Install the indoor unit on the wall At a height of 160 cm (5.3 feet) from the floor.

Considering the following points before selecting where to install:

• Please select a vertical wall with load-bearing capacity for installation, Concrete or other non-flammable surfaces, Installation steps are shown below.
  Install this inverter at eye level in order to allow the LCD display to be read at all times.

• For proper air circulation to dissipate heat, allow a clearance of approx.50cm to the side and approx 50cm above and below the unit, and 100cm to the front.

Mounting the inverter
Note: Before connecting all wires, please take o ffthe bottom cover by removing two screws as shown below.

Connecting the Batteries
Insert the terminal of the battery cable flatly into the battery connector of the inverter and make sure the bolts are tightened with a torque of 2-3Nm, Make sure polarity at both the battery and the inverter/charge is correctly connected and terminals are tightly screwed to the battery terminals.

Connecting the AC
WARNING! All wiring and cable sizing must follow the wiring regulations and code of practices of whichever country you live in. There are two terminal blocks with “AC Input”, “AC Output”, markings, Please DO NOT mix-connect input and output connectors. Be sure to connect AC wires with The correct polarity.

• Before making AC input/output connection, be sure to disconnect the utility grid first
• Remove the insulation sleeve 10mm for the six conductors.
• Insert AC input wires according to the polarities indicated on terminal block and tighten the terminal screws. Be sure to connect PE protective conductor first.
• Make sure the wires are securely connected.

Connecting the PV
WARNING! All wiring must be performed by a qualified personnel. It’s very important for system safety and efficient operation to use appropriate cable for PV module connection. To avoid any malfunction, do not connect any PV modules with possible current leakage to the inverter. For example, grounded PV modules will cause current leakage to the inverter. When using PV modules, please be sure NO grounding. It is Required to use PV junction box with surge protection. Otherwise,it will cause damage on The inverter when lightning occurs on PV modules.

• Insert PV wires according to the polarities indicated on The terminal block and tighten the terminal screws.Be sure to connect PE protective conductor first.
• Make sure the wires are securely connected.

Connecting the Generator
WARNING! All wiring must be performed by a qualified personnel. It’s very important for system safety and efficient operation to use appropriate cable for Gen. module connection.

• Insert GEN.wires according to polarities indicated on terminal block and tighten the terminal screws. Be sure to connect PE protective conduct or first.
• Make sure the wires are securely connected.

Connecting the Ground
WARNING! All wiring must be performed by a qualified personnel. It’s very important for system safety and efficient operation to use appropriate cable for the Ground connection.

Connecting the WiFi
For the configuration of Wi-Fi Plug, please refer to illustrations of the Wi-Fi Plug.

Installing the CT Coil to get LIMIT function
The CT coil is one of the most important parts of the SUNT inverter. This device reduces the power of the inverter to prevent feeding power to the grid. This feature is also known as “Zero Export”.

• Fit the coil (sensor) around the live cable on the main fuse feeding the building and run the cable back to the inverter. This cable can be extended up to an extra 10m using a similar cable.
• Connect the other end of the CT coil into the inverter terminals marked as CT coil
  IMPORTANT If the CT coil is clamped to the live cable in the wrong way then this variable will have negative instead of positive values when the power is flowing into the house/inverter. Also, the inverter export limiting function will not work properly.

OPERATION

Switching on
Once the SUNT hybrid inverter has been fixed into a suitable location,solar panels wired, batteries connected,and AC wired to a fuse board or power block,it is time to turn on the device.

Buttons
There are four buttons on the panel, Configuration ,Up ,Down and Home , from left to right.

LCD screen
LCD screen can display the relevant information about the operation of the machine ,and display the Settings of the machine.

1. This area displays the real-time and the number of settings displayed during the setting process.

2. This area displays information about the batteries and solar modules connected to the unit as well as the Thermometer reading inside the unit.
   Include:

3. The working voltage and current of the solar module;

4. Battery operating voltage,capacity,charging current,discharge current;

5. Internal temperature of the machine;
   Operation to change display contents;
   The display content of this part can be switched by pressing the two buttons and on the left.

6. This area displays information about ac input and output while the machine is working. Includes:

7. AC output voltage of the inverter;

8. AC output current of the inverter;

9. AC output power(KW) of the inverter;

10. AC output power(KVA) of the inverter;

11. AC input(home grid or generator) voltage;

12. A C input(home grid or generator) current;

13. AC input(home grid or generator) power;

14. AC input(home grid or generator) frequency；
    The display content of this part can be switched by pressing the two buttons and on the left.

15. This area displays the total power of the load.The greater the load power,the more the number of bars displayed ,and vice versa.

16. This area displays the battery capacity.The larger the battery capacity,the more bars are displayed ,and vice versa.

17. This area shows whether the machine is connected to Bluetooth , WIFI,and whether it has PayGo function.Each models of the machine display different contents in this part.Display icon,that there is a corresponding function,otherwise do not display.

18. This area shows the operating status of the machine.The corresponding arrows indicate the direction of energy flow.When the corresponding arrow flashes,it means that the energy in this part is flowing in the direction of the arrow.

ICONS

The ICONS above from left to right represent:

1. Utility grid.

2. connected solar module.

3. AC output.

4. Batteries connected.

5. DC load.

6. The internal AC charging module of the machine, that is, charging the battery through the power grid.

7. The DC-DC module, connected to the solar module represents the MPPT charging module inside the machine.

8. The DC-DC module adjacent to the DC load is the DC output module inside the machine.
   ( Note: This feature is customizable and not standard.)

9. Represents the internal inverter module of the machine, which converts the input DC into ac output.

10. the AC bypass module.

Machine function and parameter setting:
When you press for about 3 seconds,It will enter the configuration interface, you can build all configurations by using these four buttons. Short press ,you can select the configuration page that you want to set up. Short press ,you can select the number that you want to change on the same page. Short press and , you can change the content that you selected. Press longer than 2S, then the configuration page will return back to the previous page. When you finish the configurations, then you can press for about 3 seconds to quit, or you just stop pressing any button, then the configuration procedure will quit automatically in about 10 seconds.

There are many configurations that you can set up:

Remarks:

1. If overload protection restart is set to Enable mode, the AC output will be automatically restored in 5 minutes after the device enters overload protection. If it is set to Disable, the system Will not restart.
2. If the overtemperature protection restart Setting is set to Enable mode, when the device is in overtemperature protection mode, the AC output automatically recovers after the device cools down to normal temperature. If It is set to Disable, the system Will not restart.

Fault Code

some AC loads from AC output.

2.  Set the “maximum discharge current” setting much high in the battery settings page if it is possible.

E15| AC output has shortcircuited or has been connected with very big load.| 1. Check the AC output.

2. Don’t connect too big load to AC output.

E18| AC over current fault of hardware| 1.  Please check whether the backup load power is within the range or not;

2.  Restart and check whether it is in Normal state;

3.Seek help from us, If it can not go back to normal state

E20| DC over current fault of the hardware| 1.  Check PV module connect and battery connect;

2.  Turn off the DC switch and AC switch and then wait one minute,then turn on the DC/AC switch again;

3. Seek help from us, If it can not go back to normal state.

E34| AC_OVER_LOAD| Check the connected AC loads, if total loads power is higher than rated power, reduce the loads
E55| DC busbar voltage is too high| Check the battery voltage

If too many PCS battery packs were connected in series, you need to remove some of them.

E56| DC busbar voltage is too low| Check the battery voltage

1. If the battery voltage is too low, using PV or grid to charge the battery;

2. If too few battery packs were connected in series, you need to add some battery packs.

E64| Heat sink high temperature failure| Heat sink temperature is too high

1.  Check whether the work environment temperature is too high;

2. Turn o ffthe inverter for 10mins and restart;

3.  Seek help from us, If it can not go back to normal state.

Maintenance of the System
The inverter is low maintenance, however, It is important to clean all the cooling fans and air ducts to maintain a dust-free condition. Check if there are no fault codes and if Lithium battery communication is Stable. Weekly cleaning statement: Suggest micromesh filters as an available option. Microants here are a real problem.

Weight and Dimension of the Hybrid Inverter

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