NIT No. 15 (20-21) Item No. 3

Dismantling & changing of following parts in LT Panel taking out the installed ACB from the panel, removing of defective parts of ACB & other parts i.e. indicating lights, Amp. Meter etc. dismantling of all incoming & outgoing connection.

Supply of Air circuit Breaker 800 Amp. 50kA, 3 pole MDO 415V, microprocessor release. Make: - L&T

Supply of MCB single pole 6Amp. Make: - L&T

Supply of under voltage trip unit. Make: - L&T

Protection relays having sensitive earth fault over current, S/c protection with following features- High set elements, highly immune to harmonics, both 1A & 5A CT input in one relay, 6 output contacts, Non-volatile memory for trip indication, self-monitoring facility, status indication LED display & sealable front cover to prevent unauthorized access. Make: - L&T

Supply of digital Amp. Meter size 96X96mm. Make: - L&T

Supply of digital Volt Meter 0-500V size 96X96mm. Make: - L&T

Adapter plate of size 144X144 mm

Supply of indicating light LED type Blue. Make: - L&T

Supply of arcing contact. Make: - L&T

Supply of indicating lights LED type Red/Yellow/Green. Make: - L&T

Supply of current Transformer 800/5. Make - AE / any DJB approved make.

Making of outgoing/incoming bus bar links for main & cable connection duly sleeve with heat shrinkable PVC sleeve.

Bus bar Aluminium of electrolytic grade conductivity covered with heat shrinkable PVC sleeve throughout in red, yellow & blue colour to identify three phases & black for neutral current carrying capacity 800 Amp. The bus bar support insulator made of non-deteriorating, vermin proof, non-hygroscopic materials such as SMC/DMC.

Fitting of the Air circuit breaker & racking system in panel enclosure complete with auxiliary contacts NO+NC making required modification in panel door & base frame to fix the new ACB. Control wiring of ACB for indication & tripping system.

Fixing of the IDMT O/C E/F relay complete with wiring and setting of protection parameters as per site requirements

Servicing/Overhauling of complete ACB of 800 Amp. in panel, removal of old grease and re-greasing of all movable parts with recommended grease, setting of tripping mechanism, re-wiring of under voltage coil, complete servicing of ACB fixing of components in place of defective components as required complete with control wiring & re-installation of ACB in existing LT panel complete with all incoming & outgoing cable connection with thimbling.

Servicing/Overhauling of complete ACB of 1600 Amp. installed as incomer & Bus coupler in panel, removal of old grease and re-greasing of all movable parts with recommended grease, setting of tripping mechanism, re-wiring of under voltage coil, complete servicing of ACB. Fixing of components in place of defective components as required complete with control wiring & re-installation of ACB in existing LT panel complete with all incoming & outgoing cable connection with thimbling.

M G Traders and Engineers