Scope of Services and Procedure

The scope of O & M is for trouble free operation of the power plant to ensure that maximum solar energy is fed to the grid. Following activities are envisaged as part of O & M:

  • Trouble free operation of the Power Plant.
  • Ensure that the Power Generated is pumped to Grid without any problem.
  • Monitor the Performance of the Power Plant by data logging.
  • Monthly report preparation & reporting to Customer on performance of Power Plant.
  • Maintenance of Module – Periodic cleaning of 1 MW Solar PV Modules
  • Scheduled maintenance of Inverter, LT, and HT & Transformer.
  • Attend to the emergency break down of the components.
  • Frequent testing of plant equipment by ‘Walk Down’ checks to internal condition of equipments such as module performance, inverter efficiency test, monitoring system testing etc.
  • Careful logging of operation data and periodically processing it to determine abnormal or slowly deteriorating conditions.
  • Careful control and supervision of operating conditions. (Wide and rapid variations in voltage and frequency conditions do contribute to increased maintenance).
  • Regulate routine maintenance work such as house keeping of plant area, keeping equipment clean, cleaning of module, proper maintenance of inverters etc.
  • Spare parts and inventory maintenance.
  • Proper codification of all spares and consumables.
  • Spare parts indenting.
  • Indenting and maintaining minimum level of critical mandatory and recommended spares.

Plant Maintenance Schedule

Sl. No. Inspection Actions required Inspection Frequency
A Solar Modules
1. Dust deposition Cleaning of modules About 15 Days Average
2. Module Junction box malfunction, visual inspection Replace the Module in case of failure. 1 Month
3. Improper Module Cable Connectors Replace the Cables / Connectors 1 Month
4. De-lamination, discoloration leading to low output Replace the Module 1 Month
5. Module Cracks Replace the module 1 Month
 B Solar Module Mounting Structure
 1. Inspection of Mounting Structure and Hardware Check Fasteners – take remedial measures in case of issues.

Check lugs of earthing conductors for corrosion – change as needed.

  3 Month
 C Inverter (Input) Technical Parameters
 1. DC Voltage @ Connection Point   3 Months
 2. Current @ Connection Point   3 Months
 D Inverter  
 1.  Loose cable Termination  Tighten the connection  6 Months
 2.  Dust Deposition  Cleaning  Monthly
 3.  Cleaning of Air Filters  Cleaning  Monthly
 4.  Performance monitoring  Visual  Daily
 5.  Data Logging    Daily
 6.  Report preparation    Monthly
 E Inverter (Output) Technical Parameters
 1.  Output Voltage   3 Months
 2.  Current   3 Months
 3.  Frequency  3 Months
 4.  Output Power   3 Months
 F  LT Panel
 1.  Loose cable Termination  Tighten the connection  6 Months
 2.  Schedule maintenance as indicated by LV Panel Supplier   
 3.  Dust Deposition  Cleaning  Monthly
 4.  Performance monitoring    Daily
 G  LT Panel (Output) Technical Parameters   
 1.  Voltage    Monthly
 2.  Current     Monthly
 3.  Frequency     Monthly
 H  Transformer
 1.  Schedule maintenance as indicated by Transformer Supplier  
 2.  Dust Deposition  Cleaning  2 Months
 3.  Performance monitoring    Daily
 I  Transformer (Output) Technical Parameters
 1.  Voltage    Monthly
 2.  Current     Monthly
 3.  Frequency    Monthly
 J  MV Panel  Schedule maintenance as indicated by MV Panel Supplier 
 1.  Dust Deposition  Cleaning  3 Months
 2.  Performance monitoring    Daily
 K  MV Panel (Output) Technical Parameters   
 1.  Voltage    2 Months
 2.  Frequency    2 Months
 L  Emergency Break down    As and When
 M  Spare parts  Ensure availability of spare parts as required for the plant to run normally.   1 Month
 N  Irradiance Meter cleaning  Cleaning with soft cloth  Daily
 O  Cable (AC & DC)  Visual inspection  15 Days
 P  SCADA  Data Monitoring  Daily

 All periodic maintenance & inspections shall be done as specified by the equipment manufacturers.