Apar Industries, Jharsuguda: 1.2 MWp Rooftop Solar I&C
A 1.2 MWp solar plant on the sheet roofs of Apar Industries at Jharsuguda, Odisha, installed and commissioned by Arrays Ingenieria for Tata Power Solar.
About the Apar Industries, Odisha project
Tata Power Solar's 2023 orders covered the installation & commissioning of the 1.2 MWp sheet-roof plant, its rooftop BOS services, and the fabrication, supply and installation of skylight safety mesh across the roof.
Arrays Ingenieria also handled the CEIG approval and liaison for the 1203 kWp plant, and supplied the earthing strip, RS485 communication cable and cable glands later in the year.
Our scope of work
- Installation & commissioning of the 1.2 MWp sheet-roof plant
- Rooftop BOS services
- Fabrication, supply and installation of skylight safety mesh
- CEIG approval and liaison
- Earthing strip, RS485 cable and cable glands
How the Project Unfolded
The work, stage by stage, as it was ordered and delivered.
Installation & commissioning
I&C of the 1.2 MWp sheet-roof plant and its rooftop BOS services.
Skylight safety mesh
Fabrication, supply and installation of skylight guard mesh across the roof.
Communication and earthing
Earthing strip and RS485 communication cable.
CEIG approval
CEIG approval and liaison for the 1203 kWp plant.
Close-out
Additional skylight mesh and cable glands.
Challenges and How We Handled Them
Safety over translucent sheets
The roof had many skylight sheets. Fabricated guard mesh over them protects installers and, for years afterwards, the cleaning crews.
Inspection-ready
With the CEIG approval in our scope, test records and drawings were prepared to the inspector's formats from the start.
Monitoring
RS485 communication cabling links the inverters to monitoring, so the owner can see the plant's output every day.
What Our I&C Scope Covered
The standard rooftop installation & commissioning scope we deliver to EPC majors' specifications, after the mandatory quality and safety training and contractor safety sign-off.
Civil works
- Earth-pit chambers and covers (RCC/PCC)
- Foundations for inverters, ACDB, ITB and accessories
- Cable trenches at ground level
Mechanical
- Lifting and handling of all material to the roof
- Module mounting structure installation on the sheet roof
- Module installation and interconnection
- Canopies for wall-mounted inverters and junction boxes
DC side
- String wiring from modules to inverters, tagged and identified
- DC cables in conduit or tray
- MC4 connectors crimped male and female
- Array junction boxes
AC side and protection
- Inverters and inverter terminal boxes
- AC distribution board (ACDB)
- LT AC cables in trays to the approved layout
- Reverse power relays installed and commissioned
Earthing and lightning
- Earth electrodes and pits
- Earthing strips for structures, inverters and ACDB, including welding
- Lightning arrestors
Roof safety and access
- Skylight safety mesh
- Walkways and hand rails
- Safety lifelines for workers
- Scaffolding for installation
Monitoring, cleaning and handover
- Data monitoring system (SCADA / power manager)
- Module cleaning system with pump and motor
- Safety posters, storage under covers and care until handover
- Testing, commissioning and handover
