supply of supply of elect items as per schedule of requirements , supply of 4x4 pvc switch board with frame plate, box made of high-strength dough mouldin g compound (dmc), minimum box size 100 mm x 75 mm x 50 mm, complete with earthing provision, suita ble for mounting modular switches and accessories. cover/front plate shall be made of electrical-grade pol ycarbonate, flame-retardant, impact-resistant and shock-proof construction. make: richa / legrand / ancho r or approved equivalent. hsn code: 8538 [ warranty period: 30 months after the date of delivery ] ] , supply of 12 module pvc surface box made of high-quality virgin pvc, self-extinguishing, fla me-retardant and impact-resistant construction, suitable for modular switches, sockets and accessories, co mplete with mounting provisions for surface installation. make: richa / havells / legrand or approved equiv alent. hsn code: 3925. [ warranty period: 30 months after the date of delivery ] ] , 25kva 3 phase digital micro controlled servo voltage stabilizer oil-cooled, input voltage-330 v-470v, output voltage-400volt+/-1%, 50hz frequency, 6m ohms insulation, auto/manual selectable operati on, 60v/sec correction rate, efficiency better than 98%, operating temperature-5c to 60c. make-powerste p/voltaire/microtek/voltech/servostar. hsn code: 8504 [ warranty period: 30 months after the date of del ivery ] ] , supply of 12 module modular front plate made of high-quality virgin polycarbonate/pvc, glos sy finish, flame-retardant, shock-proof and uv-resistant, suitable for mounting modular switches, sockets a nd accessories, complete with fixing arrangements. make: richa / havells / legrand or approved equivalent . hsn code: 8538. [ warranty period: 30 months after the date of delivery ] ] , supply of 2-way spn mcb distribution box made of high-impact, self-extinguishing, fire-retar dant engineering thermoplastic (polycarbonate), suitable for surface mounting, complete with din rail, suita ble for 230/415 v, 50 hz ac supply, conforming to is 13032, is 8623. make: richa / havells / l&t / schneide r electric or approved equivalent. hsn code: 8538. [ warranty period: 30 months after the date of deliver y ] ] , 85kva 3 phase digital micro controlled servo voltage stabilizer oil-cooled, input voltage-330 v-470v, output voltage-400volt+/-1%, 50hz frequency, 6m ohms insulation, auto/manual selectable operati on, 60v/sec correction rate, efficiency better than 98%, operating temperature-5c to 60c. make-powerste p/voltaire/microtek/voltech/servostar. hsn code: 8504 [ warranty period: 30 months after the date of del ivery ] ]