BNT100KTL On Grid PV Inverter

Specifications

Manufacturer: Afore New Energy
Model: Three-Phase BNT070KTL, BNT075KTL, BNT080KTL, BNT090KTL, BNT100KTL, BNT110KTL

 Installation

Pre-installation
Before starting the installation process, unpack the product and
check the package list to ensure all components are present. Familiarize yourself with the product overview and select a suitable mounting location according to the guidelines provided.

Mounting
Follow the mounting instructions provided in the manual to securely install the PV inverter in the chosen location.

 Electrical Connection
Connection
Connect the PV panels to the inverter following the specified guidelines in section 4.1 of the manual.

About This Manual

Scope of Validity
This manual describes the installation, commissioning, operation and maintenance of the following on-grid PV inverters produced by Afore New Energy:

Three-Phase
BNT070KTL BNT075KTL BNT080KTL BNT090KTL BNT100KTL BNT110KTL
Please keep this manual available all the time in case of any emergency.

Target Group
This manual is for qualified personnel. The tasks described in this manual must only be performed by qualified personnel.

System Diagram
The typical on-grid PV system connection diagram.
BNT070-110KTL

Circuit Breaker Recommendation

Type	Max AC Current (A)	Rated current of AC breaker (A)
BNT070KTL	111	160
BNT075KTL	120	160
BNT080KTL	127	160
BNT090KTL	143	250
BNT100KTL	158	250
BNT110KTL	158	250

Surge Protector Recommendation

• AC side, nominal discharge current 20KA, second grade lightning protection, protection voltage 2.5KV.
• DC side, nominal discharge current 20KA, second grade lightning protection, protection voltage 3.2KV.

Note:
The Inverter can be only connected to low-voltage grid. (230/400Vac, 50/60Hz).

Safety & Symbols

Safety Precautions

1.  All work on the inverter must be carried out by qualified electricians.
2. The device may only be operated with PV panels.
3. The PV panels and inverter must be connected to the ground.
4. Do not touch the inverter cover until 5 minutes after disconnecting both DC and AC power supply.
5.  Do not touch the inverter enclosure when operating, keep away from materials that may be affected by high temperatures.
6. Please ensure that the used device and any relevant accessories are disposed
7. in accordance with applicable regulations.
8.  Afore inverter should be placed upwards and handled with care in delivery. Pay attention to waterproof. Do not expose the inverter directly to water, rain, snow or spray.
9. Alternative uses, modifications to the inverter not recommended. The warranty can become void if the inverter was tampered with or if the installation is not in accordance with the relevant installation instructions.

Explanations of Symbols
Afore inverter strictly comply with relevant safety standards. Please read and follow all the instructions and cautions during installation, operation and maintenance.

Installation

Pre-installation

 Unpacking & Package List

Unpacking
On receiving the inverter, please check to make sure the packing and all components are not missing or damaged. Please contact your dealer directly for supports if there is any damage or missing components.

Package List
Open the package, please check the packing list shown as below.

Product Overview

Mounting Location
The inverters are designed for indoor and outdoor installation (IP65), to increase the safety, performance and lifespan of the inverter, please select
the mounting location carefully based on the following rules:

• The inverter should be installed on a solid surface, far from flammable or corrosion materials, where is suitable for inverter’s weight and dimensions.
• The ambient temperature should be within -25℃ ~ 60℃ (between -13 °F and 140°F).
• The installation of inverter should be protected under shelter. Do not expose the inverter to direct sunlight, water, rain, snow, spray lightning, etc.

•  The inverter should be installed vertically on the wall, or lean back on plane with a limited tilted angle. Please refer to below picture.
•  Leave the enough space around inverter, easy for accessing to the inverter, connection points and maintenance.

 Mounting

Electrical Connection

PV Connection

110kW three phase inverters have6 MPPT channels, each channel includes two PV string input;
For the best results, make sure that each MPPT channel is correctly connected with PV string. Otherwise, the inverter will activate voltage or current protection automatically.
Please make sure below requirements are followed:

• The open-circuit voltage and short-circuit current of PV string should not exceed the reasonable range of the inverters.
• The isolation resistance between PV string and ground must exceed 10 kΩ.
• The polarity of PV strings are correct.
• Use the DC plugs in the accessory.
• The lightning protector should be equipped between PV string and inverter.
• Disconnect all of the PV (DC) switch during wiring.

Warning:
The fatal high voltage may on the DC side, please comply with electric safety when connecting.
Please make sure the correct polarity of the cable connected with inverter, otherwise inverter could be damaged.

Note:
PV cable suggestion Cross-section 4mm²

 

Note:
Please use PV connector crimper to pinch the point of the arrow.

Note:
You’ll hear click sound when the connector assembly is correct.

Note:
PV string suggestion:

Correct Installation:
Channel A, B, C and D,E,F connected with PV strings separately

Wrong Installation:
Do not connect more than two PV strings into one channel

 Grid Connection
The external AC switch should be installed between inverter and grid to isolate from grid. Please make sure below requirements are followed before connecting AC cable to the inverter.

• The AC (grid) voltage should not exceed the reasonable range of the inverters.
• The phase-line from AC distribution box are correctly connected.
• Use the AC plugs in the accessory.
• The surge protector should be equipped between grid and inverter.
• Disconnect the AC (grid) switch during wiring.

Warning:
The fatal high voltage may on the AC side, please comply with electric safety when connecting.
Please make sure the right line of AC grid connected with inverter, otherwise inverter could be damaged.

1. Use a hex wrench to remove the two screws of the AC connector cover plate.
2. Cut off the appropriate sealing ring according to the outer diameter of the cable.

1. Use a wrench to remove the fastening nut of the AC terminal.

Note:
The wiring terminals should be wrapped with insulation tape, otherwise it will cause a short circuit and damage the inverter.

1. Thread the wire through the sealing ring.
2. After the terminals are crimpped, wrap the joint position with insulation tape.
3. Connect the wire to the corresponding terminal and tighten the fastening nut to check for the risk of short circuit.

The user must connect a protective earth (PE) terminal to prevent electric shock. And make sure this PE terminal is properly grounded.

1. Connect the wire to the corresponding terminal and tighten the fastening nut to check for the risk of short circuit.

1. Press outward from the inside of the inverter and completely seal the surrounding area of the wire with a sealant block.

1. Use a hex wrench to tighten the loosened screws again.

Communication Connection
The monitoring module could transmit the data to the cloud server, and display the data on the PC, tablet and smart-phone.

Install the WIFI / Ethernet / GPRS / RS485 Communication
WIFI / Ethernet / GPRS / RS485 communication is applicable to the inverter. Please refer to “Communication Configuration Instruction” for detailed instruction.

Note:
The DC switch requires both to be open, not one to be opened and the other to be closed.

Turn on the DC switch and AC circuit breaker, and wait until the LED indicator  on the monitoring module flashes, indicating that the monitoring module is successfully connected.

4.5 Zero-injection Smart Meter (Optional)

1. Step 1
   Smart meter is an intelligent control equipment which is used for on-grid inverters. Its main function is to measure the forward and reverse power on the grid-connected side, and transmit data to the inverter through RS485 communication to ensure that the power of the inverter is less than or equal to the user’s home load, and no current flows into the grid
   Note:
   • please follow below pin order
   • RS485B (Pin 1/2) to three-phase meter (Pin 25)
   • RS485A (Pin 3/4) to three-phase meter (Pin 24)
2. 

Note:
When multiple inverters are connected in parallel, the total output power could not exceed the reasonable range of the smart meter.

Note:
The Inverter could be connected in parallel with Smart Meter, make sure the total load power not exceed Smart Mater’s limitation.

Operation

Control Panel

Menu Structure

Explanation of LCD Display Content

Setting

Frequency Range

Note:
The parameters setting only works after the inverter is restarted.

Commissioning

Before starting up commissioning at site, please make sure below procedures and requirements are fully meet.

• Mounting location is meet the requirements.
• All of the electrical wiring is firmly connected, including PV wiring, Grid wiring and Earth wiring.

Commissioning Procedures

• Turn on the AC switch between inverter output and the public grid;
• Turn on the DC switch on the inverter;
• Turn on the PV switch of the system.

Start-up & Shut Down

Shut down

• Turn off the DC switch on the inverter.
• Turn off the DC switch between PV panels and the inverter (if any).
• Close the AC switch between the inverter and the public grid.

Note:
The inverter will be operable after minimum 5 minutes.

Restart

• Shut down the inverter according to Chapter 7.1.
• Start-up the inverter according to Chapter 6.

 Maintenance&Trouble Shooting

Maintenance
Periodically maintenance are necessary, please follow steps as below. PV connection: twice a year
AC connection : twice a year
Earth connection: twice a year
Heat sink: clean with dry towel once a year.

Trouble Shooting
Fault messages will be displayed when fault occurs, please according to the troubleshooting table find related solutions.

Trouble-Shooting List

Type of Fault	Code	Name	Description	Recommend Solution
PV Fault	A01	PvConnectFault	The actual PV connection type (independent, parallel) different from setup.	Set PV connection type according to the actual PV connection type.
	A02	IsoFault	ISO check among PV panels/ the wires to the ground is abnormal.	Check whether the PV modules and its wiring are immersed in water and whether the insulation is damaged, and then make corrections. If the fault occurs continuously and frequently, contact the local distributors for help.
	A03	PvAfciFault	PV current arcing	Check whether the PV cables and wiring terminals are broken or connection abnormal, and correct them. If the fault occurs continuously and frequently, contact the local distributors for help.
	A04	Pvs1OverVoltFault	PV Voltage over, beyond the reasonable range.	Reconfiguration of PV strings, reduce the PV number of a PV string to reducing inverter PV input voltage. Contact local distributors for suggestion.
	A05	PVs2OverVoltFault
	A16	PVs1ReverseFault	PV(+) and PV(-) reversed Connection	•    Check whether PV(+) and PV(-) connection reversed or not. If reversed, make correction.
	A17	PVs1ReverseFault
	A33	Pv1AbnormalFault	Compared with previous voltage and other PV voltages, this PV voltage suddenly becomes higher or lower.	Check if PV modules are partially blocked or cells are damaged. Check if PV cables and terminals broken or loose connection, then repair it.
	A34	Pv2AbnormalFault
DC Fault	E01	Pv1HwOverCurrFault	PV current over, triggered the hardware protection circuit	Power off, then restart If fault still occurs continuously and frequently, please ask help for local distributors.
	E02	Pvs2HwOverCurrFault
	E13	PVs1SwOverCurrFault	PV current over, triggered the software protection circuit	Power off, then restart If fault still occurs continuously and frequently, please ask help for local distributors.
	E14	PVs2SwOverCurrFault

Type of Fault	Code	Name	Description	Recommend Solution
DC Fault	E33	Boost1SelfCheckFault	PV boost circuit abnormal when self checking	•  Power off, then restart. •   If fault still occurs continuously and frequently, please ask help for local distributors.
	E34	Boost2SelfCheckFault
	E45	BusHwOverVoltFault	Bus voltage over	Power off, then restart. If fault still occurs continuously and frequently, please ask help for local distributors.
	E46	BusHwOverHalfVoltFault
	E47	BusSwOverVoltFault
	E48	BusSwOverHalfVoltFault
	E49	BusSwUnderVoltFault	Bus voltage under as running
	E50	BusUnbalancedFault	DC Bus voltage unbalanced
AC Fault	F01	HwOverFault	Hardware detected that current over / BUS voltage over	Power off, then restart. If fault still occurs continuously and frequently, please ask help for local distributors.
	F02	InvHwOverCurrFault	Hardware detected that inverter current over
	F03	InvROverCurrFault	R phase /Split phase L1 current over
	F04	InvSOverCurrFault	S phase /Split phase L2 current over
	F05	InvTOverCurrFault	T phase current over
	F06	GridUnbalanCurrFault	3 phase current effective value has big difference
	F07	DcInjOverCurrFault	DC injection current over
	F08	AcOverLeakCurrFault	Ac side leakage current over	Check if PV panels has good ground insulation and ground wires are connected well ground is well, then repair it. Power off, then restart. If fault still occurs continuously and frequently, please ask help for local distributors.
	F09	PLLFault	The phase-locked loop is operating abnormally, and it does not stably track the grid voltage phase.	Power off, then restart. If fault still occurs continuously and frequently, please ask help for local distributors.
	F10	GridRelay1Fault	It is detected that the relay group 1 cannot be opened or closed normally.

Type of Fault	Code	Name	Description	Recommend Solution
DC Fault	E33	Boost1SelfCheckFault	PV boost circuit abnormal when self checking	Power off, then restart. If fault still occurs continuously and frequently, please ask help for local distributors.
	E34	Boost2SelfCheckFault
	E45	BusHwOverVoltFault	Bus voltage over	Power off, then restart. If fault still occurs continuously and frequently, please ask help for local distributors.
	E46	BusHwOverHalfVoltFault
	E47	BusSwOverVoltFault
	E48	BusSwOverHalfVoltFault
	E49	BusSwUnderVoltFault	Bus voltage under as running
	E50	BusUnbalancedFault	DC Bus voltage unbalanced
AC Fault	F01	HwOverFault	Hardware detected that current over / BUS voltage over	Power off, then restart. If fault still occurs continuously and frequently, please ask help for local distributors.
	F02	InvHwOverCurrFault	Hardware detected that inverter current over
	F03	InvROverCurrFault	R phase /Split phase L1 current over
	F04	InvSOverCurrFault	S phase /Split phase L2 current over
	F05	InvTOverCurrFault	T phase current over
	F06	GridUnbalanCurrFault	3 phase current effective value has big difference
	F07	DcInjOverCurrFault	DC injection current over
	F08	AcOverLeakCurrFault	Ac side leakage current over	Check if PV panels has good ground insulation and ground wires are connected well ground is well, then repair it. Power off, then restart. If fault still occurs continuously and frequently, please ask help for local distributors.
	F09	PLLFault	The phase-locked loop is operating abnormally, and it does not stably track the grid voltage phase.	Power off, then restart. If fault still occurs continuously and frequently, please ask help for local distributors.
	F10	GridRelay1Fault	It is detected that the relay group 1 cannot be opened or closed normally.

Specifications

PV Input Data	BNT070KTL	BNT075KTL	BNT080KTL	BNT090KTL	BNT100KTL	BNT110KTL
Max. DC Power ( W )	105000	112500	120000	135000	150000	165000
Max. DC Voltage ( V )	1100
MPPT Voltage Range ( V )	200 – 1000
MPPT Full Power Voltage Range ( V )	500 – 850
Rated Input Voltage ( V )	620
Start-up Voltage ( V )	200
Max. Input Current ( A )	38 x 6
Max. Short Current ( A )	48 x 6
No. of MPP Tracker / No. of PV String	6/12
Input Connector Type	MC4

Documents / Resources

Afore BNT100KTL On Grid PV Inverter [pdf] Instruction Manual BNT100KTL On Grid PV Inverter, BNT100KTL, On Grid PV Inverter, Grid PV Inverter, PV Inverter, Inverter

References

• User Manual