FSP Technology 1KVA-5KVA User manual

1KVA-5KVA
INVERTER / CHARGER
Version: 1.5
User Manual

Table Of Contents
ABOUT THIS MANUAL ..................................................................................................................................... 1
Purpose............................................................................................................................................................ 1
Scope ............................................................................................................................................................... 1
SAFETY INSTRUCTIONS.................................................................................................................................. 1
INTRODUCTION ............................................................................................................................................... 2
Features........................................................................................................................................................... 2
Basic System Architecture ............................................................................................................................... 2
Product Overview............................................................................................................................................. 3
INSTALLATION ................................................................................................................................................. 4
Unpacking and Inspection................................................................................................................................ 4
Preparation ...................................................................................................................................................... 4
Mounting the Unit............................................................................................................................................. 4
Battery Connection .......................................................................................................................................... 5
AC Input/Output Connection ............................................................................................................................ 7
PV Connection ................................................................................................................................................. 8
Final Assembly................................................................................................................................................. 9
Communication Connection........................................................................................................................... 10
Dry Contact Signal ......................................................................................................................................... 10
OPERATION ..................................................................................................................................................... 11
Power ON/OFF .............................................................................................................................................. 11
Operation and Display Panel ......................................................................................................................... 11
LCD Display Icons ......................................................................................................................................... 12
LCD Setting.................................................................................................................................................... 14
Display Setting ............................................................................................................................................... 21
Operating Mode Description .......................................................................................................................... 24
Fault Reference Code.................................................................................................................................... 25
Warning Indicator ........................................................................................................................................... 26
SPECIFICATIONS ........................................................................................................................................... 27
Table 1 Line Mode Specifications ................................................................................................................... 27
Table 2 Inverter Mode Specifications ............................................................................................................. 28
Table 3 Charge Mode Specifications .............................................................................................................. 29
Table 4 General Specifications ....................................................................................................................... 30
TROUBLE SHOOTING..................................................................................................................................... 31
Appendix: Approximate Back-up Time Table ........................................................................................... 32

1
ABOUT THIS MANUAL
Purpose
This manual describes the assembly, installation, operation and troubleshooting of this unit. Please read
this manual carefully 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 (3 pieces of 40A, 32VDC for 1KVA, 4 pieces of 40A, 32VDC for 2KVA and 6 pieces for 3KVA, 1
piece of 200A, 58VDC for 4KVA and 5KVA) 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!! 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.

2
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 inverter
Built-in MPPT solar charge controller
Configurable input voltage range for home appliances and personal computers via LCD setting
Configurable battery charging current based on applications via LCD setting
Configurable AC/Solar Charger priority via LCD setting
Compatible to mains voltage or generator power
Auto restart while AC is recovering
Overload/ Over temperature/ short circuit protection
Smart battery charger design for optimized battery performance
Cold start function
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.
Figure 1 Hybrid Power System

3
Product Overview
1-3KVA model
NOTE: For parallel model installation and operation,
please check separate parallel installation guide for
the details.
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. RS232 communication port
13. Parallel communication cable (only for parallel model)
14. Current sharing cable (only for parallel model)
15. Dry contact
4KVA/5KVA single model
4KVA/5KVA parallel model

4
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 unit x 1
User manual x 1
Communication cable x 1
Software CD 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.

5
Install the unit by screwing three screws. It’s recommended to use M4 or M5 screws.
1-3KVA 24V, 1KVA/3KVA 48V model 2-3KVA 24V/48V Plus, 4-5KVA 48V model
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’s 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
mm2
Dimensions
D (mm)
L (mm)
1KVA 48V
20A
100AH
1*14AWG
2
6.4
21.8
2~ 3 Nm
1KVA 24V, 2KVA 48V
33A
100AH
1*10AWG
5
6.4
22.5
2~ 3 Nm
3KVA 48V
50A
100AH
1*8AWG
8
6.4
23.8
2~ 3 Nm
2KVA 24V
66A
100AH
1*6AWG
14
6.4
29.2
2~ 3 Nm
200AH
2*10AWG
8
6.4
23.8
3KVA 24V
100A
100AH
1*4AWG
22
6.4
33.2
2~ 3 Nm
200AH
2*8AWG
14
6.4
29.2
4KVA
66A
200AH
1*4AWG
22
6.4
33.2
2~ 3 Nm
2*8AWG
14
6.4
29.2
5KVA
87A
200AH
1*4AWG
22
6.4
33.2
2~ 3 Nm
2*8AWG
14
6.4
29.2
Ring terminal:

6
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. It’s suggested to connect at least 100Ah capacity battery for
1-3KVA model and at least 200Ah capacity battery for 4KVA/5KVA model.
NOTE: Please only use sealed lead acid battery or sealed GEL/AGM lead-acid battery.
3. Insert the 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
(-).

7
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 10A
for 1KVA, 20A for 2KVA, 32A for 3KVA, 40A for 4KVA and 50A for 5KVA.
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
Model
Gauge
Torque Value
1KVA
16 AWG
0.5~ 0.6 Nm
2KVA 230VAC
14 AWG
0.8~ 1.0 Nm
2KVA 120VAC
3KVA
12 AWG
1.2~ 1.6 Nm
4KVA
10 AWG
1.4~ 1.6Nm
5KVA
8 AWG
1.4~ 1.6Nm
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)

8
5. Make sure the wires are securely connected.
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.
Model
Typical Amperage
Cable Size
Torque
1KVA 24V / 2KVA 24V/
3KVA 24V
25A
12 AWG
1.2~1.6 Nm
1KVA 48V / 3KVA 48V
18A
14 AWG
1.2~1.6 Nm
2KVA 24V Plus
3KVA 24V Plus
2KVA 48V Plus
3KVA 48V Plus
4KVA / 5KVA
60A
8 AWG
1.4~1.6 Nm
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.