SECTION-III

TECHNICAL SPECIFICATIONS
The proposed projects shall be commissioned as per the latest technical specifications
given by MNRE & as per NEC 690 & IEEE-1547 standard. Any shortcomings will lead
to cancelation of work orders in full or part as decided by BREDA & Competent
Authority’s decision will be final and binding on the bidder. All items supplied under
this project shall maintain all relevant MNRE/GoI guidelines and standards (ALMM
norms shall be taken into account while quoting of project).

14. DEFINITION
A Grid Connected Solar Rooftop Photo Voltaic (SPV) power plant consists of SPV array,
Module Mounting Structure, Power Conditioning Unit (PCU) consisting of Maximum
Power Point Tracker (MPPT), Inverter, and Controls & Protections, interconnect cables and
switches. PV Array is mounted on a suitable structure. Grid tied SPV system is without
battery and should be designed with necessary features to supplement the grid power during
day time. Components and parts used in the SPV power plants including the PV modules,
metallic structures, cables, junction box, switches, PCUs etc., should conform to the BIS or
IEC or international specifications, wherever such specifications are available and
applicable.
Solar PV system shall consist of following equipment’s /components.

 Solar PV modules consisting of required number of Crystalline PV modules.

 Grid interactive Power Conditioning Unit with Remote Monitoring System
 Mounting structures
 Junction Boxes.
 Earthing and lightening protections.
 IR/UV protected PVC Cables, pipes and accessories

14.1 SOLAR PHOTOVOLTAIC MODULES:

14.1.1. The PV modules used should be indigenous and as per the latest prevailing guidelines of
ALMM issued by the GoI.
14.1.2. The PV modules used must qualify to the latest edition of PV module qualification test as
per BIS standards Crystalline Silicon Solar Cell Modules IS14286. In addition, the modules
must conform to IEC 61730 Part-2- requirements for construction & Part 2 – requirements
for testing, for safety qualification or equivalent IS.
a) The total solar PV array capacity should not be less than allocated capacity (kWp) and
should comprise of solar crystalline modules of minimum 300Wp and above wattage.
Module capacity less than minimum 300 watts should not be accepted
c) Protective devices against surges at the PV module shall be provided. Low voltage drop
bypass diodes shall be provided.
d) PV modules must be tested and approved by one of the NABL/MNRE authorized test
centres.
e) The module frame shall be made of corrosion resistant materials, preferably having anodized
aluminium.
f) The bidder shall carefully design & accommodate requisite numbers of the modules to
achieve the rated power in his bid. BREDA/owners shall allow only minor changes at the
time of execution.
g) Other general requirement for the PV modules and subsystems shall be the Following:
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 I. The rated output power of any supplied module shall have tolerance of +/-3%.
II. The peak-power point voltage and the peak-power point current of any supplied module
and/or any module string (series connected modules) shall not vary by more than 2 (two) per
cent from the respective arithmetic means for all modules and/or for all module strings, as
the case may be.
III. The module shall be provided with a junction box with either provision of external screw
terminal connection or sealed type and with arrangement for provision of by-pass diode. The
box shall have hinged, weather proof lid with captive screws and cable gland entry points or
may be of sealed type and IP-65 rated.

14.1.3. The Manufacturer should provide the following minimum information must be mentioned in
each module (This can be inside or outside the laminate, but must be able to withstand harsh
environmental conditions).

a) Made in India (to be subscribed in words)

b) Company Name/ Logo
c) Model Number (It should indicate the voltage and related wattage of the module)
d) Serial Number
e) Year of Make

14.1.4. Warranties:
a) Material Warranty:
i. Material Warranty is defined as: The manufacturer should warrant the Solar Module(s) to be
free from the defects and/or failures specified below for a period not less than five (05) years
from the date of sale to the original customer ("Customer")
ii. Defects and/or failures due to manufacturing
iii. Defects and/or failures due to quality of materials
iv. Non conformity to specifications due to faulty manufacturing and/or inspection processes. If
the solar Module(s) fails to conform to this warranty, the manufacturer will repair or replace
the solar module(s), at the Owners sole option
b) Performance Warranty:
i. The predicted electrical degradation of power generated not exceeding 20% of the minimum
rated power over the 25 year period and not more than 10% after ten years period of the full
rated original output.

15. ARRAY STRUCTURE

The bidder has to provide suitable array structure as per the type & suitability of the
roof. The roof may be of any type like RCC (4 inch or more), Tin Shed (0.5 mm) or
APP coated Roof.

I. In case of RCC roof,

a) Hot dip galvanized MS mounting structures may be used for mounting the modules/
panels/arrays. Each structure should have angle of inclination as per the site conditions
to take maximum insulation. However to accommodate more capacity the angle
inclination may be reduced until the plant meets the specified performance ratio
requirements.
b) The Mounting structure shall be so designed to withstand the speed for the wind zone
of the location where a PV system is proposed to be installed. It may be ensured that
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 the design has been certified by a recognized Lab/ Institution in this regard and submit
wind loading calculation sheet to BREDA. Suitable fastening arrangement such as
grouting and calming should be provided to secure the installation against the specific
wind speed (withstand upto 150 Km/Hr).
c) The mounting structure steel shall be as per latest IS 2062: 1992 and galvanization of
the mounting structure shall be in compliance of latest IS 4759(Minimum 80 microns)
d) Structural material shall be corrosion resistant and electrolytically compatible with the
materials used in the module frame, its fasteners, nuts and bolts (anti-theft only).
Aluminium structures also can be used which can withstand the wind speed of
respective wind zone. Necessary protection towards rusting need to be provided either
by coating or anodization.
e) The fasteners used should be made up of stainless steel. The structures shall be
designed to allow easy replacement of any module. The array structure shall be so
designed that it will occupy minimum space without sacrificing the output from the
SPV panels
f) Regarding civil structures the bidder need to take care of the load baring capacity of
the roof and need arrange suitable structures based on the quality of roof.
g) The total load of the structure (when installed with PV modules) on the terrace should
be less than 60 kg/m2.
h) The minimum clearance of the structure from the roof level should be 300 mm.
i) If required, elevated structure shall be provided. In such cases, additional charges as
per volume of work shall be payable to the bidder.

II. In case of tin shed aluminium rails/block segment to be used to mount Solar PV
module.

III. In case rooftop with APP coating

a) Only Aluminium structure shall be used for mounting the modules/ panels/arrays
preventing any rupture/penetration/damage of the APP coating.
b) Each structure should have angle of inclination as per the site conditions to generate
maximum power. However, to accommodate more capacity the angle inclination may
be reduced until the plant meets the specified performance ratio requirements.
c) The Mounting structure shall be so designed to withstand the speed for the wind zone
of the location where a PV system is proposed to be installed. It may be ensured that
the design has been certified by a recognized Lab/ Institution in this regard and submit
wind loading calculation sheet to BREDA. Suitable fastening arrangement such as
grouting and calming should be provided to secure the installation against the specific
wind speed (withstand upto 150 Km/Hr)
d) Structural material shall be corrosion resistant and electrolytically compatible with the
materials used in the module frame, its fasteners, nuts and bolts (anti-theft only).
e) Aluminium structures also can be used which can withstand the wind speed of
respective wind zone. Necessary protection towards rusting need to be provided either
by coating or anodization.
f) The fasteners used should be made up of stainless steel. The structures shall be
designed to allow easy replacement of any module. The array structure shall be so

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 designed that it will occupy minimum space without sacrificing the output from the
SPV panels
g) Regarding civil structures the bidder need to take care of the load baring capacity of
the roof and arrange suitable structures based on the quality of roof.
h) The total load of the structure (when installed with PV modules) on the terrace should
be less than 60 kg/m2.
16. JUNCTION BOXES (JBs)
a) The junction boxes are to be provided in the PV array for termination of connecting cables.
The J. Boxes (JBs) shall be made of GRP/FRP/Powder Coated Aluminium /cast aluminium
alloy with full dust, water & vermin proof arrangement. All wires/cables must be terminated
through cable lugs. The JBs shall be such that input & output termination can be made through
suitable cable glands.
b) Copper bus bars/terminal blocks housed in the junction box with suitable termination threads
Conforming to IP65 standard and IEC 62208 Hinged door with EPDM rubber gasket to
prevent water entry. Single / double compression cable glands. Provision of earthing. It should
be placed at 5 feet height or above for ease of accessibility.

c) Each Junction Box shall have High quality Suitable capacity Metal Oxide Varistors (MOVs) /
SPDs, suitable Reverse Blocking Diodes. The Junction Boxes shall have suitable arrangement
monitoring and disconnection for each of the groups.
d) Suitable markings shall be provided on the bus bar for easy identification and the cable
ferrules must be fitted at the cable termination points for identification

17. DC DISTRIBUTION BOARD:

a) DC Distribution panel to receive the DC output from the array field.
b) DC DPBs shall have sheet from enclosure of dust & vermin proof conform to IP 65
protection. The bus bars are made of copper of desired size. Suitable capacity MCBs/MCCB
shall be provided for controlling the DC power output to the PCU along with necessary surge
arrestors. Wherever it is necessary to disconnect the array a manual disconnect switch should
also be there.

18. AC DISTRIBUTION PANEL BOARD:

a) AC Distribution Panel Board (DPB) shall control the AC power from PCU/ inverter, and
should have necessary surge arrestors. Interconnection from ACDB to mains at LT Bus bar
while in grid tied mode.
b) All switches and the circuit breakers, connectors should conform to IEC 60947, part I, II and
III/ IS60947 part I, II and III.
c) The changeover switches, cabling work should be undertaken by the bidder as part of the
project.
d) All the Panel’s shall be metal clad, totally enclosed, rigid, floor mounted, air - insulated,
cubical type suitable for operation on three phase / single phase, 415 or 230 volts, 50 Hz
e) The panels shall be designed for minimum expected ambient temperature of 45 degree
Celsius, 80 percent humidity and dusty weather.
f) All indoor panels will have protection of IP54 or better. All outdoor panels will have
protection of IP65 or better.

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 g) Should conform to Indian Electricity Act and rules (till last amendment).
h) All the 415 AC or 230 volts devices / equipment like bus support insulators, circuit breakers,
SPDs, VTs etc., mounted inside the switchgear shall be suitable for continuous operation and
satisfactory performance under the following supply conditions
Variation in Supply Voltage +/- 10%
Variation in Supply Frequency +/- 3 Hz

19. PCU/ARRAY SIZE RATIO:

a) The combined wattage of all inverters should not be less than rated capacity of power plant
under STC.
b) Maximum power point tracker shall be integrated in the PCU/inverter to maximize energy
drawn from the array.
c) The array capacity or inverter capacity whichever is minimum consider for payment as
well as installed capacity.

20. PCU/ Inverter:

As SPV array produce direct current electricity, it is necessary to convert this direct current
into alternating current and adjust the voltage levels to match the grid voltage. Conversion
shall be achieved using an electronic Inverter and the associated control and protection
devices. All these components of the system are termed the “Power Conditioning Unit (PCU)”.
In addition, the PCU shall also houses MPPT (Maximum Power Point Tracker), an interface
between Solar PV array & the Inverter, to the power conditioning unit/inverter should also be
DG set interactive, if necessary. Inverter output should be compatible with the grid frequency.
Typical technical features of the inverter shall be as follows:
Switching devices IGBT/MOSFET
Control Microprocessor/DSP
Nominal AC output 415V, 3 Phase, 50 Hz (In case, single phase inverters
voltage & frequency are offered, suitable arrangement for balancing the
phases must be made).
Output frequency 50 Hz
Grid frequency synchronization +3 Hz or more
range
Ambient temperature -10°C to 50°C
considered
Humidity 95% (Relative Humidity)
Protection of enclosure IP-20 (Minimum) for indoor IP-65 (Minimum) for
outdoor
Grid frequency tolerance range +3 Hz or more
Grid voltage tolerance -20% to +15%
No-load losses Less than 1% of rated power
Inverter efficiency (Minimum) >95%

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 THD <3%
PF >0.9

a) Three phase PCU/ inverter shall be used with each power plant system.
b) PCU/inverter shall be capable of complete automatic operation including wake-up,
synchronization & shutdown.
c) The output of power factor of PCU inverter is suitable for all voltage ranges or sink of reactive
power, inverter should have internal protection arrangement against any sustainable fault in
feeder line and against the lightning on feeder.
d) Built-in meter and data logger to monitor plant performance through external computer shall
be provided. Overall efficiency for Grid Tied invertor as per EN50530
e) The power conditioning units / inverters should comply with applicable IEC/ equivalent BIS
standard for efficiency measurements and environmental tests as per standard codes IEC
61683/IS 61683 and IEC 60068-2(1,2,14,30) /Equivalent BIS Std.
f) The charge controller (if any) / MPPT units environmental testing should qualify IEC 60068-
2(1, 2, 14, 30)/Equivalent BIS standard. The junction boxes/ enclosures should be IP 65(for
outdoor)/ IP 54 (indoor) and as per IEC 529 specifications.
g) The PCU/ inverters should be tested from the MNRE approved test centres / NABL /BIS /IEC
accredited testing- calibration laboratories. In case of imported power conditioning units, these
should be approved by international test houses.

21. INTEGRATION OF PV POWER WITH GRID:

The output power from SPV would be fed to the inverters which converts DC produced by
SPV array to AC and feeds it into the main electricity grid after synchronization. In case of
grid failure, or low or high voltage, solar PV system shall be out of synchronization and shall
be disconnected from the grid. 4 Pole isolation switch of inverter output with respect to the
grid need to be provided.

22. DATA ACQUISITION SYSTEM / PLANT MONITORING

i. Data Acquisition System /RMS shall be provided for each of the solar PV plant.
ii. Data Logging Provision for plant control and monitoring, time and date stamped system data
logs for analysis with the high quality, suitable. Metering and Instrumentation for display of
systems parameters and status indication to be provided.
iii. Solar Irradiance: An integrating Pyranometer / Solar cell based irradiation sensor (along with
calibration certificate) provided, with the sensor mounted in the plane of the array. Readout
integrated with data logging system
iv. Temperature: Temperature probes for recording the Solar panel temperature and/or ambient
temperature to be provided complete with readouts integrated with the data logging system
v. The following parameters are accessible via the operating interface display in real time
separately for solar power plant:
a. AC Voltage.
b. AC Output current.
c. Output Power
d. Power factor.
e. DC Input Voltage.
f. DC Input Current.
g. Time Active.
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 h. Time disabled.
i. Time Idle.
j. Power produced
k. Protective function limits (Viz-AC Over voltage, AC Under voltage, over frequency,
under frequency ground fault, PV starting voltage, PV stopping voltage.
vi. All major parameters available on the digital bus and logging facility for energy auditing
through the internal microprocessor and read on the digital front panel at any time) and
logging facility (the current values, previous values for up to a month and the average values)
should be made available for energy auditing through the internal microprocessor and should
be read on the digital front panel.
vii. Array monitoring and AC output monitoring shall be provided as part of the inverter and/or
string/array combiner box or separately.
viii. String and array DC Voltage, Current and Power, Inverter AC output voltage and current (All
3 phases and lines), AC power (Active, Reactive and Apparent), Power Factor and AC energy
(All 3 phases and cumulative) and frequency shall be monitored.
ix. Computerized AC energy monitoring shall be in addition to the digital AC energy meter.
x. The data shall be recorded in a common work sheet chronologically date wise. The data file
shall be MS Excel compatible. The data shall be represented in both tabular and graphical
form.
xi. All instantaneous data shall be shown on the computer screen.
xii. Software shall be provided for USB download and analysis of DC and AC parametric data for
individual plant.
xiii. Provision for Internet monitoring and download of data shall be also incorporated.
xiv. Remote Server and Software for centralized Internet monitoring system shall be also provided
for download and analysis of cumulative data of all the plants and the data of the solar
radiation and temperature monitoring system.
xv. Ambient / Solar PV module back surface temperature shall be also monitored on continuous
basis.
xvi. Simultaneous monitoring of DC and AC electrical voltage, current, power, energy and other
data of the plant for correlation with solar and environment data shall be provided.
xvii. Remote Monitoring and data acquisition through Remote Monitoring System software at the
owner /BREDA location with latest software/hardware configuration and service connectivity
for online / real time data monitoring/control complete to be supplied and comprehensive
maintenance/control to be ensured by the supplier. Provision for interfacing these data on
BREDA server and portal in future shall be kept.
xviii. For the purpose monitoring of Plant data remotely, All bidders are require to furnish Laptops
as per minimum technical specification mentioned below:
 Laptop15.6 Inch Screen, Core I7 processor
 10th Generation FHD Laptop
 12 GB RAM, 2 TB HDD/ Genuine Windows 10 / Integrated Graphics card
 Laptop Bag
 Mouse (Wi-Fi) + Mouse Pad
 Colour (Wi-Fi) Printer with Scanner
 64 GB Pen-drive-2 nos.
 Warranty & Insurance- To be extended upto 5 Years.

The above PC/System has to be maintained for the entire contract period.

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24. PROTECTIONS
The system should be provided with all necessary protections like earthing, Lightning, fire
extinguishers, fire buckets, danger boards as necessary and grid islanding as follows:

25.1. LIGHTNING PROTECTION

(SOLID COPPER BONDED ROD Length - 1.2Mtr of 16mm diameter).
The SPV power plants shall be provided with lightning &overvoltage protection. The main
aim in this protection shall be to reduce the over voltage to a tolerable value before it reaches
the PV or other sub system components. The source of over voltage can be lightning,
atmosphere disturbances etc. The entire space occupying the SPV array shall be suitably
protected against Lightning by deploying required number of Lightning Arrestors. Lightning
protection should be provided as per IEC 62305 standards and impulse current testing.

25.2. EARTHING PROTECTION

i. Each array structure of the PV yard should be grounded/ earthed properly as per latest IS:
3043-1987 (reaffirmed 2006). In addition the lightning arrester/masts should also be earthed
inside the array field. Earth Resistance shall be tested in presence of the representative of
DISCOM/BREDA as and when required after earthing by calibrated earth tester. PCU,
ACDB and DCDB should also be earthed properly. All non-current metal parts shall be
earthed with two separate and distinct earth continuity conductors to an efficient earth
electrode. Separate earthing to be provided for LA, AC and DC parts.
ii. Earth resistance shall not be more than 5 ohms. It shall be ensured that all the earthing points
are bonded together to make them at the same potential.

25.3. GRID ISLANDING:

i. In the event of a power failure on the electric grid, it is required that any independent power-
producing inverters attached to the grid turn off in a short period of time. This prevents the
DC-to-AC inverters from continuing to feed power into small sections of the grid, known as
“islands.” Powered islands present a risk to workers who may expect the area to be
unpowered, and they may also damage grid-tied equipment. The Rooftop PV system shall be
equipped with islanding protection. In addition to disconnection from the grid (due to
islanding protection) disconnection due to under and over voltage conditions shall also be
provided.
ii. A manual disconnect pole isolation switch beside automatic disconnection to grid would have
to be provided at utility end to isolate the grid connection by the utility personnel to carry out
any maintenance. This switch shall be locked by the utility personnel

26. CABLES
Cables of appropriate size to be used in the system shall have the following characteristics:

i. Shall meet IEC 60227/IS 694, IEC 60502/IS1554 standards BS EN 50618

ii. Temp. Range: –10oC to +80oC.
iii. Voltage rating 660/1000V
iv. Excellent resistance to heat, cold, water, oil, abrasion, UV radiation
v. Flexible
vi. Sizes of cables between array interconnections, array to junction boxes, junction boxes to
Inverter etc. shall be so selected to keep the voltage drop (power loss) of the entire solar

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 system to the minimum. The cables (as per IS) should be insulated with a special grade PVC
compound formulated for outdoor use.
vii. Cable Marking: All cable/wires are to be routed in a GI cable tray Conduit of HDPE Pipe and
suitably tagged and marked with proper manner by good quality ferule or by other means so that the
cable easily identified.
viii. The Cable should be of copper as per standards selected that it should be compatible up to the
life of the solar PV panels i.e. 25years.
ix. The ratings given are approximate. Bidder to indicate size and length as per system design
requirement. All the cables required for the plant provided by the bidder. Any change in
cabling sizes if desired by the bidder/approved after citing appropriate reasons. All cable
schedules/layout drawings approved prior to installation.
x. Multi Strand, Annealed high conductivity copper conductor PVC type ‘A’ pressure extruded
insulation or XLPE insulation. Overall PVC/XLPE insulation for UV protection Armoured
cable for underground laying. All cable trays including covers to be provided. All cables
conform to latest edition of IEC/ equivalent BIS Standards as specified below: BoS item /
component Standard Description Standard Number Cables General Test and Measuring
Methods, PVC/XLPE insulated cables for working Voltage up to and including 1100 V ,UV
resistant for outdoor installation IS /IEC 69947.
xi. The size of each type of DC cable selected shall be based on minimum voltage drop however;
the maximum drop shall be limited to 1%.
xii. The size of each type of AC cable selected shall be based on minimum voltage drop however;
the maximum drop shall be limited to 2 %.

xiii. Only copper cables shall be permitted to use inside the project both AC and DC side before
upto LT panel of the building premises.

27. CONNECTIVITY
The maximum capacity for interconnection with the grid at a specific voltage level shall be as
specified in the Distribution Code/Supply Code of the State and amended from time to time.

28. TOOLS & TACKLES AND SPARES:

i. After completion of installation & commissioning of the power plant, necessary tools &
tackles are to be provided free of cost by the bidder for maintenance purpose. List of tools
and tackles to be supplied by the bidder for approval of specifications and make from
BREDA/ owner.
ii. A list of requisite spares in case of PCU/inverter comprising of a set of control logic cards,
IGBT driver cards etc. Junction Boxes. Fuses, MOVs / arrestors, MCCBs etc along with spare
set of PV modules be indicated, which shall be supplied along with the equipment. A
minimum set of spares shall be maintained in the plant/service centre for the entire period of
warranty and Comprehensive Maintenance which upon its use shall be replenished. The
Successful Bidder shall be required to establish at least one Service Centre in Bihar along
with the spares.
29. DANGER BOARDS AND SIGNAGES:
Danger boards should be provided as and where necessary as per IE Act. /IE rules as amended
up to date. Three signage shall be provided one each at control room, solar array area and main
entry from administrative block. Text of the signage may be finalized in consultation with
BREDA/DISCOM.

30. FIRE EXTINGUISHERS:

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 The firefighting system for the proposed power plant for fire protection shall be consisting of:
a) Portable fire extinguishers in the control room for fire caused by electrical short circuits
b) Sand buckets in the control room
c) The installation of Fire Extinguishers should confirm to TAC regulations and BIS standards.
The fire extinguishers shall be provided in the control room housing PCUs as well as on the
Roof or site where the PV arrays have been installed.

31. DRAWINGS & MANUALS:

i. Two sets of Engineering, electrical drawings (certified from MNRE empanelled chartered
engineer) and Installation and CMC manuals are to be supplied. Bidders shall provide
complete technical data sheets for each equipment giving details of the specifications along
with make/makes in their bid along with basic design of the power plant and power
evacuation, synchronization along with protection equipment. The bidder should carry out
Shadow Analysis at the site and accordingly design strings & arrays layout considering
optimal usage of space, material and labour. The bidder should submit the array layout
drawings along with Shadow Analysis Report to BREDA. The bidder shall submit preliminary
drawing for approval & based on any modification or recommendation, if any.
ii. Approved ISI and reputed makes as per latest prevailing MNRE technical specifications for
equipment will be used,

32 DRAWINGS TO BE FURNISHED BY BIDDER AFTER AWARD OF CONTRACT

i. The Contractor shall furnish the following drawings Award/Intent and obtain approval
ii. General arrangement and dimensioned layout
iii. Schematic drawing showing the requirement of SV panel, Power conditioning Unit(s)/
inverter, Junction Boxes, AC and DC Distribution Boards, meters etc.
iv. Structural drawing along with foundation details for the structure.
v. Itemized bill of material for complete SV plant covering all the components and associated
accessories.
vi. Layout of solar Power Array
vii. Shadow analysis of the roof
viii. Financial model/ cost analysis

33. Detailed Project Report (DPR) has to be submitted as per attached format
Two nos. final DPR has to be submitted as per attached format

34. SOLAR PV SYSTEM ON THE ROOFTOP FOR MEETING THE ANNUAL ENERGY
REQUIREMENT

The Solar PV system on the rooftop of the selected buildings will be installed for meeting the
annual energy requirements of the PV capacity permissible by DISCOM as per regulation
issued by BERC.

35. SAFETY MEASURES:

The bidder shall take entire responsibility for electrical safety of the installation(s) including
connectivity with the grid and follow all the safety rules & regulations applicable as per
Electricity Act, 2003 and CEA guidelines etc.

IEC Standards

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Solar Modules/Panels

IEC 61215/ IS 14286 Design Qualification and Type Approval for Crystalline Silicon
Terrestrial Photovoltaic (PV) Modules

IEC 61701 Salt Mist Corrosion Testing of Photovoltaic (PV) Modules

IEC 61853- Part 1/ Photovoltaic (PV) module performance testing and energy rating
Irradiance and temperature performance measurements, and power
IS 16170: Part 1
rating

IEC 62716 Photovoltaic (PV) Modules – Ammonia (NH3) Corrosion Testing

(As per the site condition like dairies, toilets)

IEC 61730-1,2 Photovoltaic (PV) Module Safety Qualification – Part 1:

Requirements for Construction, Part 2: Requirements for Testing

IEC 62804 Photovoltaic (PV) modules - Test methods for the detection of
potential-induced degradation. IEC TS 62804-1: Part 1:
Crystalline silicon (mandatory for applications where the system
voltage is > 600 VDC and advisory for installations where the
system voltage is < 600 VDC)

Solar PV Inverters

IEC 62109-1, IEC Safety of power converters for use in photovoltaic power systems
62109- 2 Part 1: General requirements, and Safety of power converters for
use in photovoltaic power systems
Part 2: Particular requirements for inverters. Safety compliance
(Protection degree IP 65 for outdoor mounting, IP 54 for indoor
mounting)

IEC/IS 61683 (as Photovoltaic Systems – Power conditioners: Procedure for

applicable) Measuring Efficiency (10%, 25%, 50%, 75% & 90-100% Loading
Conditions)

BS EN 50530 (as Overall efficiency of grid-connected photovoltaic inverters: This

applicable) European Standard provides a procedure for the measurement of the
accuracy of the maximum power point tracking (MPPT) of
inverters, which are used in grid-connected photovoltaic systems. In
that case the inverter energizes a low voltage grid of stable AC
voltage and constant frequency. Both the static and dynamic MPPT
efficiency is considered.

IEC 62116/ UL 1741/ Utility-interconnected Photovoltaic Inverters - Test Procedure of

IEEE 1547 (as Islanding Prevention Measures
applicable)

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IEC 60255-27 Measuring relays and protection equipment – Part 27: Product
safety requirements

IEC 60068-2 (1, 2, 14, Environmental Testing of PV System – Power Conditioners and
27, 30) Inverters a) IEC 60068-2-1: Environmental testing - Part 2-1: Tests
- Test A: Cold b) IEC 60068-2-2: Environmental testing - Part 2-2:
Tests - Test B: Dry heat c) IEC 60068-2-14: Environmental testing -
Part 2-14: Tests - Test N: Change of temperature d) IEC 60068-2-
27: Environmental testing - Part 2- 27: Tests - Test Ea and
guidance: Shock e) IEC 60068-2-30: Environmental testing - Part 2-
30: Tests - Test Db: Damp heat, cyclic (12 h + 12 h cycle)

IEC 61000 – 2,3,5 (as Electromagnetic Interference (EMI) and Electromagnetic

applicable) Compatibility (EMC) testing of PV Inverters

Fuses

IS/IEC 60947 (Part 1, 2 General safety requirements for connectors, switches, circuit
& 3), EN 50521 breakers (AC/DC): a) Low-voltage Switchgear and Control-gear,
Part 1: General rules b) Low-Voltage Switchgear and Control- gear,
Part 2: Circuit Breakers c) Low-voltage switchgear and Control-
gear, Part 3: Switches, disconnectors, switch- disconnectors and
fuse-combination units d) EN 50521: Connectors for photovoltaic
systems – Safety requirements and tests

IEC 60269-6 Low-voltage fuses - Part 6: Supplementary requirements for fuse-

links for the protection of solar photovoltaic energy systems

Surge Arrestors

IEC 62305-4 Lightning Protection Standard

IEC 60364-5-53/ IS Electrical installations of buildings - Part 5-53: Selection and

15086-5 (SPD) erection of electrical equipment - Isolation, switching and control

IEC 61643-11:2011 Low-voltage surge protective devices - Part 11: Surge protective
devices connected to low-voltage power systems - Requirements
and test methods

Cables

IEC 60227/IS 694, IEC General test and measuring method for PVC (Polyvinyl chloride)
60502/IS 1554 (Part 1 insulated cables (for working voltages up to and including 1100 V,
& 2) / IEC69947 and UV resistant for outdoor installation)

BS EN 50618 Electric cables for photovoltaic systems (BT(DE/NOT)258), mainly

for DC Cables

Earthing /Lightning

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IEC 62561 Series IEC 62561-1
(Chemical earthing)
Lightning protection system components (LPSC) - Part 1:
Requirements for connection components IEC 62561-2 Lightning
protection system components (LPSC) - Part 2: Requirements for
conductors and earth electrode
IEC 62561-7
Lightning protection system components (LPSC) - Part 7:
Requirements for earthing enhancing compounds

Junction Boxes

IEC 60529 Junction boxes and solar panel terminal boxes shall be of the
thermo-plastic type with IP 65 protection for outdoor use, and IP 54
protection for indoor use

Solar PV Roof
Mounting Structure

IS 2062/IS 4759 Material for the structure mounting

Fly ash bricks with stone dust and 53 grade OPC cement. Minimum
Ballast (Dead weight)
Density 1700 – 1850 Kg/ m3, Minimum compressive strength 90 –
100 Kg / cm2. Test certificates from lab or Academic Institutions
has to be submitted.

Note: The test certificate should have been issued after 1st April, 2018.

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