REPAIR/MAINTENANCE OF SPV PLANT INCLUDING OTHER CONNECTED WORKS AT AF STN NAL UNDER GE (AF) NAL

Comprehensive maintenance of 1500 kwp Solar power plant at Nal to ensure maximum solar energy is fed to grid including the contractor will have to carried out inspection/check and maintenance of following equipments as given below. (i) Inspection and maintenance of the all Cable and connection box. (ii) Inspection and maintenance of the all Solar panels/ PV modules (5000 Nos). (iii) Inspection and maintenance of the all solar wiring connected to different devices and maintenance of Solar PV Arrary. (v) Inspection and maintenance of all equipments of transformer . (vi) Inspection and maintenance of Instruments . (vii) Inspection and maintenance of junction box . (viii) Inspection and maintenance of wiring . (ix) Inspection and maintenance of Grid inverter 03 Nos Make teba. The following check and work carried out in maintenance of grid inverter as given. (a) Remove any excess dust in heat sink and ventilations.This shall only be done with a dry cloth and brush (b) Check and clean that vermin have not infested the inverter , Typical signs of this include Spider webs on ventilation grills or waps nest in heat sinks. (c) Check functionality ,e.g automatic disconnection upon loss of grid power supply,at least once a month (d) Verify the state of DC/AC surge arrestors,cable connection and circuit breakers monthly (e) Clean and replace air filters & Fan Filter.

(x) Contractor also provide skilled technician and labour for attending the fault occurred anywhere in solar system with in 24 hours of fault occurrence and rectified the same within 48 hours of fault occurrence without affecting the generation of solar system Note:- (for item i to ix)The check / inspection schedule and complete description of work carried out in maintenance Schedule of above given items as per PS clause. All reports of inspection and maintenance have to be submitted to department time to time. Note:- (for item No x) (a) Replacement of unserviceable parts shall be measured and paid for separately. (b) Contractor will supply well experienced and well conversant manpower against solar plant complaints, at a time for attending fault all working days including sunday and all Holidays. (c) Contractor shall provides all tools and plants as required (d) In case of failure to rectify the fault within 48hours after attending the fault a penal recovery shall be made from contractors due @ Rs 500/- per day for each fault/complaint

Cleaning of Solar panel 5000 Nos using water properly. The following things shall be kept in mind during cleaning (a) use water and a soft sponge or cloth for cleaning (b) Do not use detergent or any abrasive material for panel cleaning (c ) Iso-propyl alcohol may be used to remove oil or grease stains (d) Do not spray water on the panel if panel glass is cracked or the back side is perforated (e) Wipe water from module as soon as possible. (f) Use proper safety kit while cleaning (g) The module should not be cleaned when they are excessively hot. Early morning is particularly good time for module cleaning (h) Ensure that the module terminal connections are not exposed while cleaning ;this poses a risk of electric shock.

Cutting of grass of surrounding area (approx 14400 Sqm) of solar panel installation properly by using manually/by Machine complete all as specified and directed by Engineer-in-charge. Notes:-(a) while cutting of grass ,take care that no solar panel get damaged (b) The Garbage that comes out after cutting has to be removed at location as directed by Engineer-in-Charge.

Supply and fixing in repair PV surge protector having Max PV operating voltage 1060V,Nominal discharge current 20KA,Max discharge current 40KA equivalent to CITEL DS50PV-1000 including necessary fitting arrangement and testing used in solar power plant complete all specified and directed by Engineer- in- Charge.

Supply and fixing in repair photovoltaic Fuses having operating voltage 1000V, current 32A, equivalent to make Ferraz mersen USM1IHEL including necessary fitting arrangement and testing used in solar system complete all specified and directed by Engineer-in-Charge.

Supply and fixing in repair Data surge protector having Max DC operating voltage 15V ,Max discharge current 20KA equivalent to CITEL DLA-12D3 including necessary fitting arrangement and testing used in solar power plant complete all specified and directed by Engineer-in -Charge.

Supply & Fixing in repair solar PV Junction Box(PV STRING COMBINER Box), outdoor type, IP-65 protection UV Resistant Polycarbonate Enclosure, suitable for 1000V DC system, including with MC4 compatible connectors, complete with 04Nos PV string inputs and 02 DC Output, equipped with 32A gPV DC fuse holder, terminal blocks, cable glands, internal wiring, labels, mounting accessories and necessary connecting accessories for mounting GI Pipe etc with complete all as specified and directed. Make SATCON Powtech or Equivalent in approved make list.

Supply, installation, testing & commissioning of outdoor type Solar PV string combiner box with string monitoring unit , IP-65 protection UV Resistant Polycarbonate Enclosure, suitable for 1500V DC system, including with MC4 compatible connectors, complete with 10Nos PV string inputs and 01 DC Output, DC fuse holder with fuse(Rating 20A/25A), terminal blocks, DC load break isloator(315Amp),control PCB, Type-II DC Surge protection device, SMPS power supply, RS485 Moodbus communication, cable glands, internal wiring, labels, mounting accessories, current monitoring -hall effect sensor for each sensor, Electrolytic tinned copper busbar and necessary connecting accessories for mounting GI Pipe etc suitable for 1.5MW solar power Plant including taking out existing unsv String Ccombiner monitor box with complete all as specified and directed. Make SATCON Powtech or Equivalent in approved make list.

Supply & Fixing in repair MC4 Compatible IP 66 connector(Male & Female) rated volatge1500V DC, rated current-20Amp suitable for solar AC plant 1.5MW with complete all as specified and directed.