REPAIR/ REFURBISHMENT OF POWER SUPPLY MODULE OP1-7 ONBOARD INS DELHI

Amount

Material & Services - Mechanical design conforming to exact form and fit of the original mechanical structure of OП1-07:- (i) Design and fabrication of heavy duty aluminium angles that acts as load bearing beams. (ii) Design and fabrication of aluminium U-channels that connects the supporting beam and provides a platform for mounting of the electrical components. (iii) Design and fabrication of a welded aluminium enclosure with hinged top cover and suitable air vents, made from 16-18 gauge aluminium sheet houses the components for OП1-07. (iv) Design and fabrication of front panel conforming to the original rack design fasterened suitably to OП1-07. (v) Design and fabrication of shock, impact and corrosion resistant linear bearing strips. (vi) Fabrication of strainless steel handles for the front panel.

Material & Services - Mechanical design conforming to exact form and fit of the original mechanical structure of OП1-07:- (i) Design of deep drawing dies for 14-16 gauge aluminium sheet metal. (ii) Shaping of aluminium sheet metal using a punching die in a punching press for each halves of the two-piece hinged enclosure. (iii) Aluminium enclosure repairing using deep drawing in a hydraulic forming press. (iv) Welding of flanges to each halves of the aluminium enclosure. (v) Riveting and fastening of hinges to each enclosure.

Material & Services - High voltage isolation for OП1-07:- (i) Fabrication of surge arresters for isolating the OП1-07-01 aluminium enclosure, floating at 14KV ground potential. (ii) Fabrication of NEMA G10 glass reinforced fibre- glass material made brackets for mounting the OП1-07- 01 aluminium enclosure, on a four symmetrically placed surge arresters.

Material & Services - Generation of 40 Vdc 8A for the Electromagnet (EM) in OП1-07:- (i) PCB design and fabrication for a fast diode bridge and LC filter for 220 Vac 400 Hz input. (ii) PCB design and fabrication for dc/dc converter with it; 0.5% output load. (iii) fabrication of a sheet metal structure to house the PCBs and associated electronics in the OП1-07 enclosure. (iv) Fabrication of heat sink for the dc/dc converter. (v) Fabrication of suitable structure for mounting and appropriate cooling fan for dc/dc converter.

Material & Services - Electrical isolation of filament and focus voltage, with ground at 14 KV:- (i) Design and construction of 20 Kvsc isolation transformer with shielding over primary. (ii) Design and fabrication of brackets for mounting the transformer inthe OП1-07 enclosure.

Material & Services - Generation of 12.6 V 3.2A for the focusing electrode:- (i) PCB design and fabrication for ac/dc power supply to convert 220 400 Hz to 12.6Vdc with <1% load regulation. (ii) Design and fabrication of aluminum sheet metal enclosure. (iii) Repairing of suitable brackets for mounting said PCB in the OП1-07-01 enclosure.

Material & Services - Generation of the (-) 200V for the filament:- (i) PCB desiggn and fabrication for 5 series conneted power supplies to generate a stabilized (-) 200v with & it; 1% load regulation. (ii) Repairing of suitable brackets for mounting said PCB in the O П1-07-01 enclosure.

Material & Services - Air circulation fan in the focus and filament unit, OП1-07:- (i) Repairing of suitable brackets for mounting said PCB in the original enclosure, OП1-07.

Material & Services - Generation of 0.7V used as safety interlock for high voltage generation: - (i) PCB design and fabrication that geenrates 0.7 V against the full volatge output of the filament and EM.

Material & Services - Internal wiring and connectors:- (i) Zero Halogen (ZH) Low Fire Hazard (LFH) insulated cable with tinned copper wire must be used for internal wiring. (ii) Min. 45KV rated, Silicone rubber sheated 16/18AWG wire must be used for power transfer to the OП1-07-01 enclosure. (iii) Suitable connectors on every PCB so that they can removed for easy maintenance. (iv) Each connector must be unique to prevent incorrect mating of connectors during maintenance.

SINAXIS ENTERPRISES PVT LTD

FLIC MICROWAVES PVT LTD