Envertech EVT248 Manuale utente
Microinverter EVT248
User manual
Microinverter EVT248
HIGHLIGHTS
High-quality energy harvest with high MPPT accuracy
Concentrated reliability and stability
No single-point failure
Improved safety with integrated complete set of protec on func ons
Life me free remote monitoring at solar pane l ’ s level
Flexibly adapted to almost all 60-cell or 72-cell panels
Easy installa on
Long life me
The EVT248 Microinverter as a cu ng-edge spokesman for the microinverters in the new era, has
full sincerity and devo on to stability, details and more advanced tech. EVT248 seeks to enable best
improved solar energy harvest, highest possible reliability, much simplifi ed installa on and most effi cient
management of solar power systems.
Each EVT248 is individually connected to one solar panel with every MPPT(Maximum Power Point
Tracking) respec vely for every panel. This unique confi gura on minimizes the nega ve impact from
environment such as shading, dust, orienta on or panel aging and eliminates the possibility of
single-point failure, thus improving the system’s harvest to largest extent.
1. Important Safety Informa on
1.1 READ IT FIRST
This manual contains important instruc ons for installa on and maintenance of the EVT248
microinverter.
To reduce the risk of electrical shock, and to ensure safe installa on and opera on of the microinverter,
the following safety symbols appear throughout this document to indicate dangerous condi ons and
important safety instruc ons.
DANGER
DANGER indicates a hazardous situa on which, if not avoided,
will result in death or serious injury.
WARNING
WARNING indicates a hazardous situa on which, if not avoided,
can result in death or serious injury or moderate injury.
NOTICE
NOTICE indicates a situa on that can result in property damage,
if not avoided.
1.2 SAFETY INSTRUCTIONS
• Do not use Envertech equipment in a manner not specifi ed by the manufacturer. Doing so may cause
death or injury to persons, or damage to equipment.
• Be aware that only qualifi ed personnel should install or replace the Envertech microinverters and the
Cable and accessories.
• Do not a empt to repair the Envertech microinverter; it contains no user-serviceable parts. If it fails,
contact Envertech customer service to start the replacement process. Tampering with or opening the
Envertech microinverter will void the warranty.
• If the AC cable on the microinverter is damaged or broken, do not install the unit.
• Before installing or using the Envertech microinverter, read all instruc ons and cau onary markings in
the technical descrip on and on the Envertech microinverter system and the PV equipment.
• Connect the Envertech Microinverter to the u lity grid only a er you have completed all installa on
procedures and a er receiving prior approval from the electrical u lity company.
• Be aware that the body of the Envertech microinverter itself is aheat sink. Under normal opera ng
condi ons, the temperature is 20°C above ambient, but under extreme condi ons the microinverter
can reach a temperature of 65°C (176°F). To reduce risk of burns, use cau on when working with
microinverters.
• Do not disconnect the PV module from the Envertech microinverter without fi rst removing AC power.
• Be aware that the EVT248 has the ability to auto adjust voltage and frequency according to the se ngs
based on local standards. Only an authorized installer who has got permission from local electrical
u lity and meets with the following requirements shall be allowed to set the Envertech microinverter.
2. Envertech Microinverter System
The Envertech microinverter system is an on-grid microinverter system with world top-class technology.
This manual gave details about safe installa on and opera on of the Envertech Microinverter.
The three key elements of an Envertech microinverter system include:
EVT248 microinverter EnverBridge: monitoring
and communica on device.
EnverPortal: data display
and analysis web pla orm.
This integrated system maximizes energy harvest, increases system reliability, and simplifi es design,
installa on and management.
2.1 HOW IT WORKS
The Envertech microinverter maximizes energy produc on from your photovoltaic (PV) array. Each
Envertech microinverter is individually connected to one PV module in your array. This unique
confi gura on means that an individual Maximum Peak Power Point Tracker (MPPT) controls each PV
module. This ensures that the maximum power available from each PV module is exported to the u lity
grid regardless of the performance of the other PV modules in the array. That is, although individual
PV modules in the array may be aff ected by shading, soiling, orienta on, or PV module mismatch, the
Envertech microinverter ensures top performance for its associated PV module. The result is maximum
energy produc on from your PV system.
2.2 MONITORING DEVICE: ENVERBRIDGE
Once you install EnverBridge and provide an ethernet connec on to your broadband router or modem,
the Envertech microinverter automa cally begin repor ng to the Envertech EnverBridge web server.
The EnverBridge so ware presents current and historical system.
Performance trends, and it informs you of PV system status.
2.3 OPTIMAL RELIABILITY
Microinverter systems are inherently more reliable than tradi onalinverters. The distributed nature
of a Microinverter system ensures that there is no single point failure in the PV system. Envertech
Microinverters are designed to operate at full power at ambient temperatures as high as +65°C (150°F).
The Microinverter casing is designed for outdoor installa on and complies with the IP65 protec on level.
IP65 ra ng defi ni on: IP stands for ‚Ingress Protec on‘. An IP number is used to specify the
environmental protec on of enclosures around electronic equipment. It is composed of two numbers,
the fi rst referring to the protec on against solid objects and the second against liquids. The higher the
number, the be er the protec on. 6 means totally protected against dust.5 means protected against low
pressure water jets from any direc on.
NOTE: To ensure op mal reliability and to meet warranty requirements, the Envertech microinverter
must be installed according to the instruc ons in this manual.
2.4 SIMPLE DESIGN
PV systems using Envertech microinverters are very simple to design and install. You can install
a combina on of PV modules of any type, at any orienta on and in any quan ty. You won’t need to
install cumbersome tradi onal inverters. Each microinverter can be quickly mounted on the PV racking,
directly beneath each PV module. Low voltage DC wires connect from the PV module directly to the
co-located microinverter, elimina ng the risk of personnel exposure to dangerously high DC voltage.
Model EVT248
Input Data (DC)
Recommended maximum input 300 W
Maximum input DC voltage 54 V
Start voltage 24 V
Peak power tracking range 28V ~ 42 V
Opera ng range 18V ~ 54 V
Maximum DC short circuit
current 15 A
Maximum input current 9.5 A
Output Data (AC)
Rated output power 248 W
Maximum output current 1.07 A
Nominal voltage 220 V / 230 V / 240 V
Nominal frequency 50 Hz / 60 Hz
Power factor > 0.99
Total Harmonic Distor on < 3%
Maximum units per branch 15
Effi ciency
Peak inverter effi ciency 95.6%
EURO weighted effi ciency 95% (according
to the EN50530)
Nigh me power consump on 100 mW
Mechanical Data
Enclosure environmental ra ng IP65
Ambient temperature range -40°C ~ +85°C
Opera ng temperature range -40°C ~ +65°C
Dimensions (WxHxD) 163 mm x 163 mm
x 27 mm
Weight 1.5 kg
Features
Communica on PLCC
Warranty 25 Years
3. Product Informa on
3.1 OVERVIEW 3.3 DATASHEET
3.2 MAJOR CHARACTERISTICS
Envertech microinverter has the following
characteris cs which make Envertech
microinverter “High Effi cient, High Reliable,
High Cost Eff ecient”.
Wide DC input voltage range and current range.
Wide MPPT voltage range ensures high yield
under various weather condi ons.
High MPPT accuracy, ensures the minimum
power loss during conver ng.
Complete set of protec on func ons.
Also,the following protec on func ons are
integrated in Envertech microinverter:
• Internal overvoltage/undervoltage
• Faulty Grounding protec on
• Grid monitoring
• Ground overcurrent monitoring
• DC current monitoring
4. Packing checklist
4.1 ACCESSORIES
A er you receive the Envertech microinverter, please check if there is any damage on the carton,
and then check the inside completeness for any visible external damage on the microinverter and
accessories. Contact your dealer if anything is damaged or missing.
4.2 PRODUCT DESCRIPTION
4.3 FURTHER INFORMATION
If you have any further ques ons concerning accessories or installa on, please check our website
www.envertec.com or send an email to info@envertec.com
4.3 FURTHER INFORMATION
AC connector
Wall bracket hole
Grounding hole
LED light
DC connectors
5. Planning of Microinverter Installa on
5.1 EXPLANATIONS OF SYMBOLS ON INVERTER
Symbol Descrip on
Dangerous electrical voltage
This device is directly connected to public grid, thus all work related to
theinverter shall only be carried out by qualifi ed personnel.
NOTICE, danger!
This device directly connected with electricity generators and public grid.
Danger of hot surface
The components inside the inverter will release a log of heat during
opera on. DO NOT touch aluminum casing during opera ng.
An error has occurred
Please go to Chapter 10 “Trouble Shoo ng” to repair the error.
This device SHALL NOT be disposed of in residen al wastePlease go to
Chapter 9 “Recycling and Disposal” for proper treatments.
No unauthorized perfora ons or modifi ca ons
Any unauthorized perfora ons or modifi ca ons are strictly forbidden.
If any defect or damage (device/person) is occurred, Envertech shall
not take any responsibility for it.
5.2 LIGHTNING AND SURGE SUPPRESSION
Envertech microinverters have integral surge protec on. However, if the surge has excess energy, the
protec on built into the microinverter can be exceeded, and the equipment can be damaged. For this
reason, Envertech recommends that you protect your system with lightning and/or surge suppression
devices. In addi on to having some level of surge suppression, it is important to have insurance that
protects against lightning and electrical surges.
6. Microinverter Installa on
6.1 TOOL REQUIRED
6.2 NECESSARY PARTS FOR INSTALLATION
01 PV module
02 Microinverter
03 Moun ng racking
04 AC BUS Cable
05 AC Extension Cable
06 AC Trunk Plug Tag
07 AC Trunk End Cap
08 AC Trunk Unlock Tool
05
04
03
06
07
01
02
09
08
12
11 08
13
10
DANGER
DO NOT connect or disconnect the PV module and Envertech Microinverter
without fi rst removing AC power from the PV system.
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