invt XN5548 Off Grid Inverter User Manual

User Manual 5.5KW
XN5548 OFF-GRID INVERTER

ABOUT THIS MANUAL

Purpose
“This manual describes the assembly, installation, operation and troubleshooting of this unit. Please read this manual carefuly before installations and operations. Keep this manual for future reference.
Scope
This manual provides safety and installation guidelines as well as information on tools and wiring.

SAFETY INSTRUCTIONS

WARNING: This chapter contains important safety and operating instructions. Read and keep this manual for future reference.

1. Before using the unit, read all instructions and cautionary markings on the unit, the batteries and all appropriate sections of this manual.

2. CAUTION ~To reduce risk of injury, charge only deep-cycle lead acid type rechargeable batteries.
   Other types of batteries may burst, causing personal injury and damage.

3. Do not disassemble the unit. Take it to a qualified service center when service or repair is required.
   Incorrect re-assembly may result in a risk of electric shock or fire.

4. To reduce risk of electric shock, disconnect all wirings before attempting any maintenance or cleaning.
   Turning off the unit will not reduce this risk.

5. CAUTION – Only qualified personnel can install this device with battery.

6. NEVER charge a frozen battery.

7. For optimum operation of this inverter/charger, please follow required spec to select appropriate cable size. It’s very important to correctly operate this inverter/charger.

8. Be very cautious when working with metal tools on or around batteries. A potential risk exists to drop a tool to spark or short circuit batteries or other electrical parts and could cause an explosion.

9. Please strictly follow installation procedure when you want to disconnect AC or DC terminals. Please refer to INSTALLATION section of this manual for the details.

10. Fuses ( 1piece of 2004, 32VDC for 3.5KW, 1piece of 2004, 58VDC for 5.5KW) are provided as over-current protection for the battery supply.

11. GROUNDING INSTRUCTIONS -This inverter/charger should be connected to a permanent grounded wiring system. Be sure to comply with local requirements and regulation to install this inverter.

12. NEVER cause AC output and DC input short circuited. Do NOT connect to the mains when DC input short circuits.

13. Warning!t Only qualified service persons are able to service this device. If errors still persist after following troubleshooting table, please send this inverter/charger back to local dealer or service center for maintenance.

INTRODUCTION

“This is a multi-function inverter/charger, combining functions of inverter, MPPT solar charger and battery charger to offer uninterruptible power support with portable size. Its comprehensive LCD display offers user-configurable and easy-accessible button  operation such as battery charging current, AC/solar charger priority, and acceptable input voltage based on different applications.

Features

• Pure sine wave output
• Output power factor 1.0
• Programmable supply priority for PV ,battery or Grid
• User-adjustable charge current and voltage
• Wide PV input range (120Vdc -500Vdc),110A MPPT SCC
• Working without batteries in sunny day
• WiFi Monitoring Function (optional)
• Anti-dusk kit for harsh environment(optional)
• LCD remote control with 10 meters wire(optional)
• PV and electricity complementary
• Use with lithium batteries

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

• Generator or Utility.
• PV modules (option)

Consult with your system integrator for other possible system architectures depending on your requirements.
This inverter can power all kinds of appliances in home or office environment, including motor-type appliances such as tube light, fan, refrigerator and air conditioner.

Product Overview

1. LCD display
2. Status indicator
3. Charging indicator
4. Fault indicator
5. Function buttons
6. Power on/off switch
7. AC input
8. AC output
9. PV input
10. Battery input
11. Circuit breaker
12. RS485/RS232 communication port

INSTALLATION

Unpacking and Inspection
Before installation, please inspect the unit. Be sure that nothing inside the package is damaged. You should have received the following items inside of package:

• The unitx 1
• User manual x 1
• Communication cable x 1

Preparation
Before connecting all wirings, please take off bottom cover by removing two screws as shown below.

Mounting the Unit
Consider the following points before selecting where to install:

• Do not mount the inverter on flammable construction materials.
• Mount on a solid surface
• Install this inverter at eye level in order to allow the LCD display to be read at all times.
• The ambient temperature should be between 0°C and 55°C to ensure optimal operation.
• The recommended installation position is to be adhered to the wall vertically.
• Be sure to keep other objects and surfaces as shown in the right diagram to guarantee sufficient heat dissipation and to have enough space for removing wires.

SUITABLE FOR MOUNTING ON CONCRETE OR OTHER NON-COMBUSTIBLE SURFACE ONLY.

Install the unit by screwing two screws.

Battery Connection
CAUTION: For safety operation and regulation compliance, it’s requested to install a separate DC over-current protector or disconnect device between battery and inverter. It may not be requested to have a disconnect device in some applications, however, it  still requested to have over-current protection installed. Please refer to typical amperage in below table as required fuse or breaker size.

WARNING! All wiring must be performed by a qualified personnel.
WARNING! It’s very important for system safety and efficient operation to use appropriate cable for battery connection. To reduce risk of injury, please use the proper recommended cable and terminal size as below. Recommended battery cable and terminal size :

Model| Typical Amperage| Battery Capacity| Wire Size| Ring Terminal| Torque Value
---|---|---|---|---|---
Cable
mm?| Dimensions
D(mm)| L(mm)
55KW 48V| 115A| 200AH| 1X4AWG| 22| 6.4| 33.2| 2~ 3Nm
2*8AWG| 14| 6.4| 29.2

Please follow below steps to implement battery connection:

1. Assemble battery ring terminal based on recommended battery cable and terminal size.

2. Connect all battery packs as units requires.
   NOTE: Please only use sealed lead acid battery or sealed GEL/AGM lead- acid battery.

3. Insertthe ring terminal of battery cable flatly into battery connector of inverter and make sure the bolts are tightened with torque of 2-3 Nm. Make sure polarity at both the battery and the inverter/charge is correctly connected and ring terminals are tightly  screwed to the battery terminals.
   WARNING: Shock Hazard
   Installation must be performed with care due to high battery voltage in series.
   CAUTION!! Do not place anything between the flat part of the inverter terminal and the ring terminal, Otherwise, overheating may occur.
   CAUTION! Do not apply anti-oxidant substance on the terminals before terminals are connected tightly.
   CAUTION!! Before making the final DC connection or closing DC breaker/disconnector, be sure positive (+) must be connected to positive (+) and negative (-) must be connected to negative (-).

AC Input/Output Connection
CAUTION!! Before connecting to AC input power source, please install a separate AC breaker between inverter and AC input power source. This will ensure the inverter can be securely disconnected during maintenance and fully protected from over current of  AC input. The recommended spec of AC breaker is for 32A for 3.5KW, 50A for 5.5KW.
CAUTION!! There are two terminal blocks with “IN” and “OUT” markings. Please do NOT mis-connect input and output connectors.
WARNING! All wiring must be performed by a qualified personnel.
‘WARNING! It’s very important for system safety and efficient operation to use appropriate cable for AC input connection. To reduce risk of injury, please use the proper recommended cable size as below.
Suggested cable requirement for AC wires

Please follow below steps to implement AC input/output connection:

1. Before making AC input/output connection, be sure to open DC protector or disconnector first.
2. Remove insulation sleeve 10mm for six conductors. And shorten phase L and neutral conductor N 3 mm.
3. Insert AC input wires according to polarities indicated on terminal block and tighten the terminal screws. Be sure to connect PE protective conductor ( ) first.
   —Ground (yellow-green)
   L—LINE (brown or black)
   N-Neutral (blue)****

WARNING:
Be sure that AC power source is disconnected before attempting to hardwire it to the unit.

4. Then, insert AC output wires according to polarities indicated on terminal block and tighten terminal screws.
   Be sure to connect PE protective conductor ( ) first.
   → Ground (yellow-green)
   L → LINE (brown or black)
   **N → Neutral (blue)

**

5. Make sure the wires are securely connected.

CAUTION: Important
Be sure to connect AC wires with correct polarity. If L and N wires are connected reversely, it may cause utility short-circuited when these inverters are worked in parallel operation.
CAUTION: Appliances such as air conditioner are required at least 2~3 minutes to restart because it’s required to have enough time to balance refrigerant gas inside of circuits. If a power shortage occurs and recovers in a short time, it will cause damage to your  connected appliances. To prevent this kind of damage, please check manufacturer of air conditioner if it’s equipped with time-delay function before installation. Otherwise, this inverter/charger will trig overload fault and cut off output to protect your appliance  but sometimes it still causes internal damage to the air conditioner.

PV Connection
CAUTION: Before connecting to PV modules, please install separately a DC circuit breaker between inverter and PV modules.
WARNING! All wiring must be performed by a qualified personnel.
WARNING! It’s very important for system safety and efficient operation to use appropriate cable for PV module connection. To reduce risk of injury, please use the proper recommended cable size as below.

PV Module Selection:
When selecting proper PV modules, please be sure to consider below parameters:

1. Open circuit Voltage (Vo) of PV modules not exceeds max. PV array open circuit voltage of inverter.
2. Open circuit Voltage (Voc) of PV modules should be higher than min. battery voltage.
   INVERTER MODEL| 5.5KW.
   ---|---
   Max. PV Array Open Circuit Voltage| 500Vdc
   PV Array MPPT Voltage Range| 120Vdc~450vdc

Take 250Wp PV module as an example. After considering above two parameters, the recommended module configurations are listed as below table.

Solar Panel Spec. (reference)
– 250Wp
– Vmp: 30.1Vdc – Imp: 8.3A
– Voc: 37.7Vdc – Iw: 8.4A
– Cells: 60| SOLAR INPUT| Qty of panels| Total input
power
---|---|---|---
(Min in serial: 6 pcs, max. in serial: 13 pcs)
6 pcs in serial| 6 pcs| 1500W
8 pcs in serial| 8 pcs| 2000W
12 pcs in serial| 12 pcs| 3000W
13 pcs in serial| 13 pcs| 3250W
8 pieces in serial and 2 sets in parallel| 16 pcs| 4000W
10 pieces in serial and 2 sets in parallel| 20 pcs| 5000W

Please follow below steps to implement PV module connection:

1. Remove insulation sleeve 10 mm for positive and negative conductors.

2. Check correct polarity of connection cable from PV modules and PV in connectors. Then, connect positive pole (+) of connection cable to positive pole (+) of PV input connector. Connect negative pole (-) of connection cable to negative pole (-) of PV input  connector.
   

3. Make sure the wires are securely connected.

Final Assembly
After connecting all wirings, please put bottom cover back by screwing two screws as shown below.

OPERATION

Power ON/OFF

Once the unit has been properly installed and the batteries are connected well, simply press On/Off switch (located on the button of the case) to turn on the unit.

Operation and Display Panel
The operation and display panel, shown in below chart, is on the front panel of the inverter. It includes three indicators, four function keys and a LCD display, indicating the operating status and input/output power information.

LED Indicator

| Green| Solid On| Output is powered by utility in Line mode.
Flashing|   Output is powered by battery or PV in battery mode.
| Green| Solid Pn| Battery ?s fully ({harged.
Flashing| |Battery is charging.
FAULT| Red| Solid On| Fault occurs in the inverter.
Flashing| Warning condition occurs in the inverter.

Function Keys

LCD Display Icons

Input Source Information
| Input Source Information
| Indicates the PV input
| Indicate input voltage, input frequency, PV voltage, battery voltage and
charger current.
Configuration Program and Fault Information
| Indicates the setting programs.
| Indicates the warning and fault codes.
Warning: flashing with warning code.Fault: lighting with fault code
Output Information
| Indicates battery level by 0-24%, 25-49%, 50-74% and 75-100% in battery mode and charging status in line  mode.
In AC mode, it will present battery charging status.|
Status| Battery voltage.| LCD Display
Constant
Current/ Constant
Voltage mode| < 2Vicel| 4 bars willflash in turns.
2~ 2.083/cell| Bottom bar will be on and the other three bars willflash in turns.
2,083 ~ 2.167V/cell| Bottom two bars will be on and the other two bars will flash in turns.

2.167 V/cell| Bottom three bars will be on and the top
bar will flash.
Floating mode. Batteries are fully charged.| 4 bars will be on.

In battery mode, it will present ba ttery capacity.

Load Information

| Indicates overload.
---|---
| Indicates the load level by 0-24%, 25-50%, 50-74% and 75-100%.
| 25%~50%| 50%~75%| 75%~100%
| | |

Mode Operation Information

| Indicates unit connects to the mains.
---|---
| Indicates unit connects to the PV panel.
| Indicates load s supplied by utility power.
| Indicates the utility charger circuit is working.
| Indicates the DC/AC inverter circuit is working.

Mute Operation

| Indicates unit alarm is disabled.
---|---

LCD Setting
After pressing and holding ENTER button for 3 seconds, the unit will enter setting mode. Press “UP” or “DOWN” button to select setting programs. And then, press “ENTER” button to confirm the selection or ESC button to exit.

Setting Programs :

01| Output source priority: To configure load power source priority| | Solar energy provides power to the loads as frist priority.
If solar energy is out sufficient to power  all connected loads,utility energy will  supply power to the loads at the same  time.
| Solar energy provides power to the loads as first priority.
If solar energy is not sufficient to power all connected loads, battery energy will supply power to the loads at the same time.
Utility provides power to the loads only when battery voltage drops to either low-level warning voltage or the setting point  in program 12.
02| Maximum charging current To configure total charging current for solar and utility chargers.

(Max. charging current = utility charging current + solar charging current)

| |
|
|
|
|
|
03| AC input voltage range| Appliances (default)
| If selected, acceptable AC input voltage range will be within 90-280VAC.
UPS
| If selected, acceptable AC input voltage range will be within 170-280VAC.
04| Power saving mode enable/disable| Saving mode disable (default)
| If disabled, no matter connected load is low or high, the on/off status of inverter output will not be effected.
Saving mode enable
| If enabled, the output of inverter will be off when connected load is pretty low or not detected.
05| Battery type| AGM (default)
| Flooded

User-Defined
| If “User-Defined” is selected, battery charge voltage and low DC cut-off voltage can be set up in program 26, 27 and 29.
06| Auto restart when overload occurs| Restart disable (default)
| Restart enable

07| Auto restart when over temperature occurs| Restart disable (default)
| Restart enable

08| Output voltage| 220V
| 230V (default)

240V
|
09| Output frequency| 50Hz (default)
| 60Hz

11| Maximum utility charging current| 2A
| 10A

20A
| 30A

40A
| 50A

60A
| 70A

80A

12| Setting voltage point back to utility source when selecting “SBU priority”| Available options in 24V models:
22.0V
| 22.5V

23.0V (default)
| 23.5V

24.0V
| 24.5V

25.0V
| 25.5V

Available options in 48V models:
44V
| 45V

46V (default)
| 47V

48V
| 49V

50V
| 51V

13| Setting voltage point back
to battery mode when
selecting “SBU priority”| Available options in 24V models:
---|---|---
Battery fully charged
| 24V

24.5V
| 25V

25.5V
| 26V

26.5V
| 27V (default)

27.5V
| 28v

28.5v
| 29v

Available options in 48V models:
Battery fully charged
| 48V

49v
| 50v

51v
| 52v

53V
| 54V (default)

55v
| 56v

57v
| 58v

16| Charger source priority:

To configure charger source priority

| If this inverter/charger is working in Line, Standby or Fault mode, charger source can be programmed as below:
---|---|---
Solar first
| Solar energy will charge battery as first priority.
Utility will charge battery only when solar energy is not available.
Solar and Utility
| Solar energy and utility will charge battery at the same time.
Only Solar
| Solar energy will be the only charger source no matter utility is available or not.
If this inverter/charger is working in Battery mode or Power saving mode, only solar energy can charge battery. Solar energy will charge battery if it’s available and sufficient.
18| Alarm control| Alarm on (default)
| Alarm off

19| Auto return to default display screen| Return to default display screen (default)
| If selected, no matter how users switch display screen, it will automatically return to default display screen (Input voltage /output voltage) after no button is pressed for 1 minute.
Stay at latest screen
| If selected, the display screen will stay at latest screen user finally switches.
20| Backlight control

(default)

| Backlight on (default)
| Backlight off

22| Beeps while primary source is interrupted| Alarm on (default)
| Alarm off

23| Overload bypass:
When enabled, the unit will  transfer to line mode if  overload occurs in battery  mode.| Bypass disable (default)
| Bypass enable

25| Record Fault code| Record enable
| Record disable (default)

26| Bulk charging voltage (C.V voltage)| 24V model default setting: 28.2V

48V model default setting: 56.4V

If self-defined is selected in program 5, this program can be set up. Setting range is from 24.0V to 29.2V for 24V model and 48.0V to 58.4V for 48V model. Increment of each click is O.1V.
27| Floating charging voltage| 24V model default to 27.0V

48V model default setting: 54.0V

If self-defined is selected in program 5, this program can be set up. Setting range is from 24.0V to 29.2V for 24V model, 48.0V to 58.4V for 48V model. Increment of each click is O.1V.
29| Low DC cut-off voltage| 24V model default setting: 21.0V

48V model default setting: 42.0V

| | If self-defined is selected in program 5, this program can be set up. Setting range is from 20.0V to 24.0V for 24V model, 40.0V to 48.0V for 48V model. Increment of each click is O.1V. Low DC cut-off voltage will be fixed to setting value no matter what percentage of load is connected.
31| Solar power balance:
When enabled, solar input  power will be automatically  adjusted according to connected load power| Solar power balance: enable (Default):
| if selected, solar input power will be automatically adjusted according to the  following formula: Max. input solar power = Max. battery charging power + Connected load power.
33| Battery equalization| |
| If “Flooded” or “User-Defined” is selected in program 05, this program can be set up.
34| Battery equalization voltage| 1KVA default setting:14.6V

Setting range is from 12.5V to 15 V. Increment of each click is 0.1V.
2/3KVA default setting: 29.2V

Setting range is from 25.0V to 29.5V. Increment of each click is 0.1V.
4/5KVA default setting:58.4V

Setting range is from 50 to 59 V.Increment of each click is 0.1V.
35| Battery equalized time| 60min (default)
| Setting range is from 5min to 900min. Increment of each click is 5min.
36| Battery equalized timeout| 120min (default)
| Setting range is from 5min to 900 min. Increment of each click is 5 min.
37| Equalization interval| 30days (default)
| Setting range is from 0 to 90 days. Increment of each click is 1 day
39| Equalization activated immediately| Enable
| Disable (default)

If equalization function is enabled in program 33, this program can be set up. If “Enable” is selected in this program, it’s to activate battery equalization immediately and LCD main page will shows ” “. If “Disable” is selected, it will cancel equalization function until next activated equalization time arrives based  on program 37 setting. At this time  will not be shown in LCD main page.

Display Setting
The LCD display information will be switched in turns by pressing “UP” or “DOWN” key. The selectable information is switched as below order: input voltage, input frequency, PV voltage, MPPT charging current, MPPT charging power, battery voltage, output  voltage, output frequency, load percentage, load in VA, load in Watt, DC discharging current, main CPU Version and second CPU Version.

Input voltage/Output voltage

(Default Display Screen)

| Input Voltage=230V, output voltage=230V

Input frequency| Input frequency=50Hz

PV voltage| PV voltage=360V

MPPT Charging current| Current =10A
Current =10A

MPPT Charging power| MPPT charging power=500W

Battery voltage/ DC discharging current| Battery voltage=25.5V, discharging current=1A

Output frequency| Output frequency=50Hz

Load percentage| Load percent=70%

Load in VA| When connected load is lower than 1kVA, load in VA will  present xxxVA like below chart.

When load is larger than 1KVA, load in VA will
present x.xkVA like below chart.

Load in Watt| When load is lower than 1kW, load in W will present W like below chart.

When load is larger than 1kW, load in W will
present x.xkW like below chart.

Main CPU version checking| Main CPU version 00014.04

Operating Mode Description

Standby mode / Power saving  mode
Note:
Standby mode: The inverter is  not turned on yet but at this time,  the inverter can charge battery  without AC output. Power saving  mode: If enabled, the  output of inverter will be off when  connected load is pretty  low or not detected.| No output is supplied by the unit but it  still can charge batteries.| Charging by utiity and PV energy.

charging by unity

charging by pv energy

No charging.

Fault mode
Note:
*Fault mode: Errors are caused  by inside circuit error or external  reasons such as over temperature,  output short circuited and 5o on.| PV energy and utility can charge  batteries.| Charging by utiity and PV energy.

Charging by utilty.

Charging by PV energy.

No charging.

Line Mode| “The unit will provide output power  from the mains. It will also charge the  battery at line mode.| Charging by utiity and PV energy.

“The unit will provide output power from the mains. It will also charge the battery at line mode.| Charging by utilty.

Tf “SUB ” is selected as output source priority and solar  energy is not sufficient to provide the load, solar energy and  the utiity will provide the loads and charge the battery at the ‘same time.

Tf “SUB ” is selected as output source priority and battery is  not connected, solar energy and the utility will provide the  loads.

Power from utilty.

Battery Mode| The unit will provide output power from  battery and PV power.| Power from battery and PV energy.

PV energy will supply power to the loads and charge battery at  the same time.

Power from battery only.

Power from PV energy only.

Battery Equalization Description
Equalization function is added into charge controller. It reverses the buildup of negative chemical effects like stratification, a condition where acid concentration s greater at the bottom of the battery than at the top.
Equalization also helps to remove sulfate crystals that might have built up on the plates. I left unchecked, this condition, called sulfation, will reduce the overall capacity of the battery. Therefore, it’s recommended to equalize battery periodically.

• How to Apply Equalization Function
  You must enable battery equalization function in monitoring LCD setting program 33 first. Then, you may apply this function in device by either one of following methods:
  1. Setting equalization interval i program 34.
  2. Active equalization immediately in program 39.

• When to Equalize
  In float stage, when the setting equalization interval (battery equalization cycle) is arrived, or equalization is active immediately, the controller will start to enter Equalize stage.
  

• Equalize charging time and timeout
  In Equalize stage, the controller will supply power to charge battery as much as possible until battery voltage raises to battery equalization voltage. Then, constant-voltage regulation is applied to maintain battery voltage at the battery equalization voltage.  The battery will remain in the Equalize stage unti setting battery equalized time is arrived.
  However, in Equalize stage, when battery equalized time is expired and battery voltage doesn’t rise to battery equalization voltage point, the charge controller will extend the battery equalized time until battery voltage achieves battery equalization voltage.  If battery voltage is stil lower than battery equalization voltage when battery equalized timeout setting is over, the charge controller will stop equalization and return to float stage.
  

Fault Reference Code

Warning Indicator

Warning
Code| Warning Event| Audible Alarm| Icon flashing
---|---|---|---
O1| Fan is locked when inverter is on.| Beep three times every second|
03| Battery is over-charged| Beep once every second|
04| Low battery| Beep once every second|
07| Overload| Beep once every 0.5 second|
10| Output power derating| Beep twice every 3 seconds|
12| Solar charger stops due to low battery.| |
13| Solar charger stops due to high PV voltage.| |
14| Solar charger stops due to overload.| |
15| PV is weak| |
19| Battery is not connected| |

SPECIFICATIONS

Table 1 Line Mode Specifications

90Vac±7V (Appliances)
Low Loss Return Voltage| 180Vac±7V (UPS);
100Vac±7V (Appliances)
High Loss Voltage| 280Vac± 7V
High Loss Return Voltage| 270Vac± 7V
Max AC Input Voltage| 300vac
Nominal Input Frequency| 50Hz / 60Hz (Auto detection)
Low Loss Frequency| 40±1Hz
Low Loss Return Frequency| 42±1Hz
High Loss Frequency| 65±1Hz
High Loss Return Frequency| 63±1Hz
Output Short Circuit Protection| Line mode: Circuit Breaker
Battery mode: Electronic Circuits
Efficiency (Line Mode)| >95% ( Rated R load, battery full charged )
Transfer Time| 10ms typical (UPS);
20ms typical (Appliances)
Output power derating:
When AC input voltage drops to 95V or 170V  depending on models, the output power will be derated.| 230Vac model:

Table 2 Inverter Mode Specifications

Low DC Warning Voltage
@ load < 20%
@ 20% 5 load < 50%
@ load ? 50%| 44.0Vdc
42.8Vdc
40.4Vdc
Low DC Warning Return Voltage
@ load < 20%
@ 20% 5 load < 50%
@ load ? 50%| 46.0Vdc
44.8Vdc
42.4Vdc
Low DC Cut-off Voltage
@ load < 20%
@ 20% 5 load < 50%
@ load ? 50%| 42.0Vdc
40.8Vdc
38.4Vdc
High DC Recovery Voltage| 58Vdc
High DC Cut-off Voltage| 62Vdc
No Load Power Consumption| <50W
Saving Mode Power Consumption| <15W

Table 3 Charge Mode Specifications

Utility Charging Mode

INVERTER MODEL| 5.5KW 48V
Charging Current (UPS)
@ Nominal Input Voltage| 80A
Bulk Charging Voltage| Flooded Battery| 58.4
AGM / Gel Batte| 56.4
Floating Charging Voltage| 54Vdc
Charging Algorithm| 3-Step
Charging Curve|
Solar Charging Mode

INVERTER MODEL| 5.5KW 48V
Rated Power| 6000W
PV Charge Current| 110A
Efficiency| 98.0% max.
Max. PV Array Open Circuit Voltage|| 500vdc
PV Array MPPT Voltage Range| 120-450vdc
Min battery voltage for PV charge|
Standby Power Consumption| 2w
Battery Voltage Accuracy| +/-0.3%
PV Voltage Accuracy| +2V
Charging Algorithm| 3-Step

Table 4 General Specifications

TROUBLE SHOOTING

Problem| LCD/LED/Buzzer| Explanation / Possible cause| What to do
---|---|---|---
Unit shuts down automatically during startup  process,| LCD/LEDs and buzzer will be active for 3 seconds and then complete off.| The battery voltage is too low (<1.91V/Cell)| 1.  Re-charge battery.
2.  Replace battery.
No response after power on.| No indication.| 1. The battery voltage is far too low,(<1.4V/Cell)
2.    Battery polarity is connected reversed.| 1. Check if batteries and the wiring are connected well.
2. Re-charge battery.
3. Replace battery.
Mains exist but the unit works in battery mode.| Input voltage is displayed as 0 on the LCD and green LED is flashing.| Input protector is tripped| Check if AC breaker is tripped and AC wiring is connected
Green LED is flashing.| Insufficient quality of AC power. (Shore or Generator)| 1. Check if AC wires are too thin and/or too long.

2. Check if generator (if applied) is working well or if input voltage range setting is correct. (UPS-)Appliance)

Green LED is flashing.| Set “Solar First” as the priority of output source,| Change output source priority to Utility first.
When the unit is turned on, internal relay is switched on and off repeatedly.| LCD display and LEN are flashing| is disconnected. Battery| Check if battery wires are connected well.
Buzzer beeps continuously and red LED is on.| Fault code 07| Overload error. The inverter is overload 110% and time is up.| Reduce the connected load by switching off some equipment.
Fault code 05| Output short circuited.| Check if wiring is connected well and remove abnormal
Temperature of internal converter component is over 120°C.| Check whether the air flow of the unit is blocked or whether the ambient temperature is too high.
Fault code 02| Internal temperature of inverter component is over 100°C.
Fault code 03| Battery is over-charged.| Return to repair center.
The battery voltage is too high,| Check if spec and quantity of batteries are meet requirements.
Fault code 01| Fan fault| Replace the fan.
Fault code 06/58| Output abnormal (Inverter voltage below than 190Vac or is higher than 260Vac)| 1. Reduce the connected load,
2. Return to repair center
Fault code

08/09/53/57

| Internal components failed.| Return to repair center,
Fault code 51| Over current or surge.| Restart the unit, if the error happens again, please return to repair center.
Fault code 52| Bus voltage is too low,
Fault code 55| Output voltage is unbalanced,
Fault code 56| Battery is not connected well or fuse is burnt.| If the battery is connected well, please  return to repair center.

Appendix: Approximate Back-up Time Table

Model| Load (W)|  Backup Time @ 24Vdc 100Ah (min)|  Backup Time @ 24Vdc 200Ah (min)
---|---|---|---
3.5kW| 300| 449| 1100
600| 22| 525
900| 124| 303
1200| 95| 227
1500| 68| 164
1800| 56| 126
2100| 48| 108
2400| 35| 94
2700| 31| 74
3200| 28| 67
Model| Load (W)|  Backup Time @ 48Vdc 100Ah (min)|  Backup Time @ 48Vdc 200Ah (min)
---|---|---|---
3.5kW| 500| 613| 1288
1000| 268| 613
1500| 158| 402
2000| 111| 271
2500| 90| 215
3200| 7| 182
3500| 65| 141
4000| 50| 112
4500| 44| 100
5000| 40| 90

Note: Backup time depends on the quality of the battery, age of battery and type of battery.
Specifications of batteries may vary depending on different manufacturers.
* Product technical specifications are subject to change without notice.

Documents / Resources

| invt XN5548 Off Grid Inverter [pdf] User Manual
XN5548 Off Grid Inverter, XN5548, Off Grid Inverter, Grid Inverter, Inverter
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