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| 1 | Excavation in trenches not exc 1.5 mtr width and not exce 1.5 mtr in depth in soft/loose soil and getting complete all as specified and as directed. |
| 2 | M & L for dry sand cushioning to under ground electric cable on layer of 8cm thick before laying the cable and second layer of 15cm thick after laying the cable all as specified in clause 19.75 of MES schedule part-1Note: Punned thickness will be considered for measurement |
| 3 | Supply and laying un-reinforced precast concrete cable cover, class HVP, type 1 with peak, size 300mm x 180mm x 40mm complete all as specified and as directed. |
| 4 | Laying only precast concrete cable cover of any size complete all as specified and as directed. |
| 5 | Returning, filling in including spreading levelling watering and well ramming in layers n.exc 25 thick for soft/loose soil complete all as specified and as directed. |
| 6 | Removal of excavated material to a disance n.exc 50 mtr and depositing where directed at a level n.exc 1.5m above the starting point complete all as specified and as directed. |
| 7 | M&L for Disconnecting of HT connections of existing transformer/VCB with earthings carefully and shifting the same from platform/sub station to AGE E/M Store yard including existing foundation will be repair and painted with white wash as per site requirement complete all as specified and as directed. |
| 8 | Supply, installation, commissioning and testing complete with all accessories of transformer of 33 KV capacity 5 MVA step down, outdoor type, floor mounted, double copper wound, 3 Phase, 50 Hz, AC, Oil immersed, ONAN/ONAF confirming to IS-2026 and IEC 62770 including cooling fans, external cooling tubes/radiator cores type having voltage ratio 33000/11000 volts (corresponding to principal tapping) winding delta connecting on Primary side and star connected on secondary side in accordance with vector symbol Dyn-11 (vector Group) with neutral brought out on secondary side and looping on HV side for contact output so as to alter/vary secondary voltage by + 7.5% in 8 steps of 2.5% each to be changed by means of (OLTC) Off Load Tap Changer. Transformer shall be of BOLTLESS core design. Transformer shall be double wound, core type with low loss, non ageing, high permeability PRIME GRADE, CRGO with m4 grade or Better, Perfectly insulated and clamped to minimize noise and vibrations, core shall be purchased directly from manufacturer of core or from their accredited marketing network and not through any agent. Before placing order for procurement of transformer, the contractor shall submit the credentials in respect of the manufacturer of core and transformer shall be procured only after approval from GE in respect of name of manufacturer of transformer as well as manufacturer of core. The limit of termperature rise after continous full load runs as specified in IS/IEC 60076 shall be suitably adjusted to suit the ambient temperature of maximum 50 degree celsius prevailing at site all as specified and directed including having following characteristics :- |
| 9 | The transformer shall confirm to the latest edition of applicable standard as follows :-(i) IS-2026, for tests and tolerance of guarnteed Particulars.(ii) IS-3639 for Fitting and accessories. (iii) IS-2099 for Bushing >1000V. (iv) IS-7421 for Bushing <1000 V (v) IS-1271 for Electrical insulation classified by Thermal stability. |
| 10 | (a) Winding (i) Primary Side Winding - Layer/disc winding (ii) Secondary Side Winding - Helical/Disc widing (b) Insulation Level (i) Primary Side - 170 (ii) Secondary Side - 70 (c) Insulation level (Power frequency with Stand KVrms)(i) Primary Side - 70 (ii) Secondary Side - 28 |
| 11 | (d) Tapping Range - (+) 5 % to (-) 15% @ 2.5% of 8 steps(e) Tape Changer Type - Off load Tap Changer. (f) Temperature Rise (Oil/Winding) - 50/55 Degree Centigrade(g) Hot spot temperature over a meximum yearly weight average ambient temp of 32 Degree Centigrade - 98 Degree Centigrade(h) Termination Primary/Secondary - Cable Box(j) Short Circuit thermal withstand time-02 seconds (k) % impedance at 75°C Current and frequency (Subject to IS Tolrance) at 5 MVA base % 8.35(l) No load loss at rated voltage and frequency (subject to IS Tolerance) (KW) - 6(m) Load loss at rated current and 75°C (KW) (subject to IS Tolerance ) at 5 MVA base - 70(n) % load at which Max Efficency occurs % - 33.81(o) Regulation at full load 0.8 PF%.- 5.75 |
| 12 | (p) Regulation at full load upf % - 1.05The transformer should have following fitting and accessories :-(a) Cable Boxes on 11 KV secondary side for single core XLPE cable 3 Core 300 Sqmm(b) Outdoor 33 KV bushing insulator for connection through open conductor with sleeves.(c) Oil conservator with filling hole and cape drain valve and oil level guage. (d) Dehydrating breather with connecting pipe first fill of dehydrating agent and oil seal.(e) Explosion relief vent mounted on tank with double diaphragm and equilliser pipe connection to conservator air space (Pressure release device)(f) Air relief plug.(g) Shut off valve between the conservator and buchholz relay.(h) Drain valve with threaded adopter. |
| 13 | (j) Filter valve with threaded adopter (Top and bottom).(k) Wheels(l) Rating plate and terminals marking plate.(m) Extra bushing for neutral out side the Secondary Side (n) Hand hole sufficient size to assess the interior of the tank.(o) First filling of the transformer oil.(p) Cover Lifting eyes.(q) Double float Buchholz relay with trip and alarm contacts.(r) 150mm dial type thermometer for winding temperature indicator having range 0-12 centigrade vapor pressure type with maximum reading pointer/Max temperature indicator and resetting device with alarm / trip contact and additional contact for switching on the cooling fan. |
| 14 | (s) Dial type thermometer for oil temperature indicator with 02 sets of contacts for alarm and trip having range 0-12 centigrade vapor pressure type with maximum reading pointer/Max temperature indicator and resetting device with alarm/trip contact .(t) Shut off valve between cooling tubes and tank.(u) Pressure Release Valve (PRV) with one set of trip contact.(v) Magnetic Oil gauage (MOLG) with one set of trip contact. (w) Earthing terminal for connecting earthing leadNOTE:-(i) The oil temperature and winding temperature guages shall be housed in a marshaling box made up of MS sheet as per manufacturer recommendations with hinged door and having glass front side of the box and provision for entry of cables and compression glands. |
| 15 | Supply & install, testing and commissioning of out door type transformer as per IS : 1180 part - I, level - III, step down, copper wound 11KV/433 Volts (at no load), AC, 3 phase, 50 Hz, 100 KVA capacity, core type, oil immersed naturally air cooled, oil natural air natural (ON/AN), with external cooling tubes, delta connected on primary side (HV) and star connected on secondary side (LV) in accordance with vector group DYN-11 with neutral brought out on secondary side (LV) and having 7 position off circuit Tap Changer (tapping range + 7.5% in steps of 2.5% to be changed by means of hand operated off load tap changer gear. The maximum temperature rise should not exceed 50 degree Celsius in oil and 55 degree Celsius in HV/LV winding when measured by resistance method after continuous full load run on an ambient temp of 40 degree Celsius transformer shall be of BOLTLESS core design. Transformer shall be double wound, core type with low loss, non ageing, high permeability prime grade crgo with M4 grade or better, perfectly insulated and clamped to minimize noise and vibrations. The transformer shall be IS/IEC: 60076 and as per IS-1180 part - I of 2014 marked and shall comprise of the following :- |
| 16 | (i) - One cable box on HT side (Primary side) consisting of three nos porcelain bushing with copper rods, complete with nuts and washer , with cable glands suitable for reception/taking out 3 core 95 Sqmm, HT 11000 volts grade, XLPE insulated and PVC sheathed, heavy duty, armoured cables including jointing materials complete.(ii) - One cable box on LT side (secondary side) consisting of four nos porcelain bushing with copper rods, complete with nuts and washers, with cable glands suitable for reception/taking out single core 500 sqmm/630 Sqmm , LT 1100 volts grade, PVC/XLPE insulated and PVC sheathed, heavy duty, armoured cables including jointing materials complete |
| 17 | (iii) - Conservator with filter type drain valve and oil level gauge.(iv) - De-hydrating breather with first fill of dehydrating agent (Silica Gel).(v) - Explosive vent, Thermometer pocket on tank cover, oil level gauge, Oil drain filter valve, Lifting legs at bottom of the tank, oil filling hole with cap/plug with connection plate complete, Air release valve plug and four nos plain solid cast steel detachable rollers.(vi) - One no 100 mm dia, dial type thermometer, vapour pressure type, having range 0-120 degree Celsius with metal guard having maximum perimeter temperature reading indicator with resetting device. |
| 18 | (vii) - Two earthing terminals on tank cover to facilitate fixing of 32x6mm galvanised iron earth strip for earthing of body.(viii) - Extra bushing for neutral in the LT cable box for providing independent set of earthing for neutral.(ix) - First fill of new and unused transformer oil, IS-335 of 1986 marked, filtered and tested upto 50 KV dielectric strength at 2.5 mm air gap between testing electrodes, specific resistance at 27 Degree Celsius Ohm-om 500 x 10 the power12, water content 50 PPM, Dielectric dissipation factor (tan Deta at 90 degree Celsius) 0.005, Neutralization value mg of KOH/gm of oil 0.03, Inter facial tension N/M at 27 Degree Celsius - 0.04, flash point 140 Degree Celsius and sludge 0.1 % by weight. |
| 19 | Supply & install, testing and commissioning of out door type transformer as per IS : 1180 part - I, level - III, step down, copper wound 11KV/433 Volts (at no load), AC, 3 phase, 50 Hz, 200 KVA capacity, core type, oil immersed naturally air cooled, oil natural air natural (ON/AN), with external cooling tubes, delta connected on primary side (HV) and star connected on secondary side (LV) in accordance with vector group DYN-11 with neutral brought out on secondary side (LV) and having 7 position off circuit Tap Changer (tapping range + 7.5% in steps of 2.5% to be changed by means of hand operated off load tap changer gear. The maximum temperature rise should not exceed 50 degree Celsius in oil and 55 degree Celsius in HV/LV winding when measured by resistance method after continuous full load run on an ambient temp of 40 degree Celsius transformer shall be of BOLTLESS core design. Transformer shall be double wound, core type with low loss, non ageing, high permeability prime grade crgo with M4 grade or better, perfectly insulated and clamped to minimize noise and vibrations. The transformer shall be IS/IEC: 60076 and as per IS-1180 part - I of 2014 marked and shall comprise of the following :- |
| 20 | (i) - One cable box on HT side (Primary side) consisting of three nos porcelain bushing with copper rods, complete with nuts and washer , with cable glands suitable for reception/taking out 3 core 95 Sqmm, HT 11000 volts grade, XLPE insulated and PVC sheathed, heavy duty, armoured cables including jointing materials complete.(ii) - One cable box on LT side (secondary side) consisting of four nos porcelain bushing with copper rods, complete with nuts and washers, with cable glands suitable for reception/taking out single core 500 sqmm/630 Sqmm , LT 1100 volts grade, PVC/XLPE insulated and PVC sheathed, heavy duty, armoured cables including jointing materials complete |
| 21 | (iii) - Conservator with filter type drain valve and oil level gauge.(iv) - De-hydrating breather with first fill of dehydrating agent (Silica Gel).(v) - Explosive vent, Thermometer pocket on tank cover, oil level gauge, Oil drain filter valve, Lifting legs at bottom of the tank, oil filling hole with cap/plug with connection plate complete, Air release valve plug and four nos plain solid cast steel detachable rollers.(vi) - One no 100 mm dia, dial type thermometer, vapour pressure type, having range 0-120 degree Celsius with metal guard having maximum perimeter temperature reading indicator with resetting device. |
| 22 | (vii) - Two earthing terminals on tank cover to facilitate fixing of 32x6mm galvanised iron earth strip for earthing of body.(viii) - Extra bushing for neutral in the LT cable box for providing independent set of earthing for neutral.(ix) - First fill of new and unused transformer oil, IS-335 of 1986 marked, filtered and tested upto 50 KV dielectric strength at 2.5 mm air gap between testing electrodes, specific resistance at 27 Degree Celsius Ohm-om 500 x 10 the power12, water content 50 PPM, Dielectric dissipation factor (tan Deta at 90 degree Celsius) 0.005, Neutralization value mg of KOH/gm of oil 0.03, Inter facial tension N/M at 27 Degree Celsius - 0.04, flash point 140 Degree Celsius and sludge 0.1 % by weight. |
| 23 | Supply & install, testing and commissioning of out door type transformer as per IS : 1180 part - I, level - III, step down, copper wound 11KV/433 Volts (at no load), AC, 3 phase, 50 Hz, 250 KVA capacity, core type, oil immersed naturally air cooled, oil natural air natural (ON/AN), with external cooling tubes, delta connected on primary side (HV) and star connected on secondary side (LV) in accordance with vector group DYN-11 with neutral brought out on secondary side (LV) and having 7 position off circuit Tap Changer (tapping range + 7.5% in steps of 2.5% to be changed by means of hand operated off load tap changer gear. The maximum temperature rise should not exceed 50 degree Celsius in oil and 55 degree Celsius in HV/LV winding when measured by resistance method after continuous full load run on an ambient temp of 40 degree Celsius transformer shall be of BOLTLESS core design. Transformer shall be double wound, core type with low loss, non ageing, high permeability prime grade crgo with M4 grade or better, perfectly insulated and clamped to minimize noise and vibrations. The transformer shall be IS/IEC: 60076 and as per IS-1180 part - I of 2014 marked and shall comprise of the following :- |
| 24 | (i) - One cable box on HT side (Primary side) consisting of three nos porcelain bushing with copper rods, complete with nuts and washer , with cable glands suitable for reception/taking out 3 core 95 Sqmm, HT 11000 volts grade, XLPE insulated and PVC sheathed, heavy duty, armoured cables including jointing materials complete.(ii) - One cable box on LT side (secondary side) consisting of four nos porcelain bushing with copper rods, complete with nuts and washers, with cable glands suitable for reception/taking out single core 500 sqmm/630 Sqmm , LT 1100 volts grade, PVC/XLPE insulated and PVC sheathed, heavy duty, armoured cables including jointing materials complete |
| 25 | (iii) - Conservator with filter type drain valve and oil level gauge.(iv) - De-hydrating breather with first fill of dehydrating agent (Silica Gel).(v) - Explosive vent, Thermometer pocket on tank cover, oil level gauge, Oil drain filter valve, Lifting legs at bottom of the tank, oil filling hole with cap/plug with connection plate complete, Air release valve plug and four nos plain solid cast steel detachable rollers.(vi) - One no 100 mm dia, dial type thermometer, vapour pressure type, having range 0-120 degree Celsius with metal guard having maximum perimeter temperature reading indicator with resetting device. |
| 26 | (vii) - Two earthing terminals on tank cover to facilitate fixing of 32x6mm galvanised iron earth strip for earthing of body.(viii) - Extra bushing for neutral in the LT cable box for providing independent set of earthing for neutral.(ix) - First fill of new and unused transformer oil, IS-335 of 1986 marked, filtered and tested upto 50 KV dielectric strength at 2.5 mm air gap between testing electrodes, specific resistance at 27 Degree Celsius Ohm-om 500 x 10 the power12, water content 50 PPM, Dielectric dissipation factor (tan Deta at 90 degree Celsius) 0.005, Neutralization value mg of KOH/gm of oil 0.03, Inter facial tension N/M at 27 Degree Celsius - 0.04, flash point 140 Degree Celsius and sludge 0.1 % by weight. |
| 27 | Supply & install, testing and commissioning of out door type transformer as per IS : 1180 part - I, level - III, step down, copper wound 11KV/433 Volts (at no load), AC, 3 phase, 50 Hz, 315 KVA capacity, core type, oil immersed naturally air cooled, oil natural air natural (ON/AN), with external cooling tubes, delta connected on primary side (HV) and star connected on secondary side (LV) in accordance with vector group DYN-11 with neutral brought out on secondary side (LV) and having 7 position off circuit Tap Changer (tapping range + 7.5% in steps of 2.5% to be changed by means of hand operated off load tap changer gear. The maximum temperature rise should not exceed 50 degree Celsius in oil and 55 degree Celsius in HV/LV winding when measured by resistance method after continuous full load run on an ambient temp of 40 degree Celsius transformer shall be of BOLTLESS core design. Transformer shall be double wound, core type with low loss, non ageing, high permeability prime grade crgo with M4 grade or better, perfectly insulated and clamped to minimize noise and vibrations. The transformer shall be IS/IEC: 60076 and as per IS-1180 part - I of 2014 marked and shall comprise of the following :- |
| 28 | (i) - One cable box on HT side (Primary side) consisting of three nos porcelain bushing with copper rods, complete with nuts and washer , with cable glands suitable for reception/taking out 3 core 95 Sqmm, HT 11000 volts grade, XLPE insulated and PVC sheathed, heavy duty, armoured cables including jointing materials complete.(ii) - One cable box on LT side (secondary side) consisting of four nos porcelain bushing with copper rods, complete with nuts and washers, with cable glands suitable for reception/taking out single core 500 sqmm/630 Sqmm , LT 1100 volts grade, PVC/XLPE insulated and PVC sheathed, heavy duty, armoured cables including jointing materials complete |
| 29 | (iii) - Conservator with filter type drain valve and oil level gauge.(iv) - De-hydrating breather with first fill of dehydrating agent (Silica Gel).(v) - Explosive vent, Thermometer pocket on tank cover, oil level gauge, Oil drain filter valve, Lifting legs at bottom of the tank, oil filling hole with cap/plug with connection plate complete, Air release valve plug and four nos plain solid cast steel detachable rollers.(vi) - One no 100 mm dia, dial type thermometer, vapour pressure type, having range 0-120 degree Celsius with metal guard having maximum perimeter temperature reading indicator with resetting device. |
| 30 | (vii) - Two earthing terminals on tank cover to facilitate fixing of 32x6mm galvanised iron earth strip for earthing of body.(viii) - Extra bushing for neutral in the LT cable box for providing independent set of earthing for neutral.(ix) - First fill of new and unused transformer oil, IS-335 of 1986 marked, filtered and tested upto 50 KV dielectric strength at 2.5 mm air gap between testing electrodes, specific resistance at 27 Degree Celsius Ohm-om 500 x 10 the power12, water content 50 PPM, Dielectric dissipation factor (tan Deta at 90 degree Celsius) 0.005, Neutralization value mg of KOH/gm of oil 0.03, Inter facial tension N/M at 27 Degree Celsius - 0.04, flash point 140 Degree Celsius and sludge 0.1 % by weight. |
| 31 | Supply, installation, testing and commissioning HT VCB Panel 11 KV, 3 phase, Indoor type, metal clad totally enclosed free standing floor mounting type, 400 Amps, horizontal draw out type vaccum circuit breaker with IP-4X degree of protection. VCB shall be factory made designed and confirming to IEC - 62271-200 with inbuilt integral earthing facility for cable as well as bus side with colour code copper bus bar, motor/manual spring charging mechanism 230 volts AC, closing & Tripping coil suitable for 24 V DC, 4NO + 4NC auxiliary switch, mechanical ON/OFF indication, Mechanical spring charge/discahrge indication, breaker position indication, secondry plug in contacts, anti pumping relay etc. with CT, PT & IDMT relay etc. addition to manual hand operated mechanism suitable for working as outgoing feeder in a sub-station. The panel should free standing compartmentalized with automatic safety shutters, equipped with necessary bus bar connections with provision for extension on and outgoing panels as specified below:- Note : The equipments shall must have the following technical data |
| 32 | STANDARDS ELECTRICAL AND MECHANICAL DATA(a) Metal Enclosed switchgear : IEC 62271-200 (b) Temperature class: - 5 °C + 40 °C (c) Degree of protection : Outer cover : IP 4X Inner partition : IP 2X(d) Nominal voltage : 11 kV(e) Rated Voltage : 11 kV(f) Rated current busbars: 400 A(g) Rated 11 KV epoxy resin Current Transformer : 100-500/5+5A, Core 1: Cl 1.0 with 15 VA burden for metering; Core 2: Cl 5P 10 with 15 VA burden for protection (h) Rated 11 KV resin cast potential Transformer : Draw out type PT, 11/√3 KV/110/√3V, 3 Phase, Core -1 : Cl 1.0 with 100 VA burden for metering & protection (j) Relay (Non drawout case type) : Micro Processor based Non- directional IDMT relay, Master Trip relay model No. AVAJH -13, Auxiliary Relay model no. AVA 23.(k) Colours : RAL 7035(l) Rated Frequency : 50 Hz(m) RYB Indication Lamp |
| 33 | (n) Breaker ON/OFF indication Lamp (o) Spring charging Inication Lamp(p) Auto Trip Indication Lamp(q) Trip Circuit Healthy Indication (r) Auxiliary contacts : 4NO+4NC(s) Battery Power Pack with Battery & Inbuilt Charger for 24 V circuit Back -up : Input Voltage - 110/230 VAC, Output Voltage - 24 / 30 / 110 / 220 VDC (t) Voltmeter with Selector Switch : Accuracy class 1.0 (96x96mm),(u) Ammeter with Selector Switch : Accuracy class 1.0 (96x96mm), (v) Trip/Neutral/Close Switch(w) MCB for AC/DC supply (x) Trip Circuit Healthy Push Button(y) Fuse/MCB for Spring Charger motor(z) Panel Space heater with thermostat (aa) Panel illumination with switch (ab) 5 Amps, 3 Pin Socket with Switch (ac) Complete Control Wiring with fuse & Ferrules. |
| 34 | Note for Item No. 8 to 13:-(i) Pre dispatch inspection of Transformers and VCBs shall be carried out by detail representative of accepting officer at manufacturer premises within overall cost quoted by the contractor. Nothing extra shall be payable on this account at later stage. (ii) Completion has been given to contractor after pre-commisioning test carried out by SEI and all the euipment/instrument shall be arranged by the Contractor for testing. The cost of the same shall also be included in the item rate.(ii) Following documents to be submitted for core during the stage inspection:(a) Invoice of supplier(b) Factory test certificates(c) Packing listMake :- ITE Gurgaon/Crompton/Schneider Electric |
| 35 | Taking down/dismantling/disconnection of Boiler/DG Set of any type and size from its original position and depositing into E/M yard complete all as specified and as directed. |
| 36 | Supply, installation, testing and commissioning of company assembled Diesel Engine driven, Silent DG Set of capacity 125 KVA,415 volts, 3 phase 4 wire, engine as per IS:10001/ 10002, complying CPCB-IV Norms(CPCB IV + Compliant) with the following specification :- |
| 37 | 1. ENGINE : -(a) Engine QSB4.5 Series/QSB4.5 2 Series(CPCB IV+Compliant), 4 Cylinder, In-line, 4 Strock, radiator cooled.(b) Robust and efficient air handling system with (i) Dry type and replaceable paper element air cleaner with restriction indicator (ii) Optimised turbo charger for increased altitude capabilitied.(c) Optimised fule consumption with common rail electronic injection.(d) Spine on single fule filter with water seprater.(e) Cooling system is designed and tested for 50 degree centigrade ambiance condition.'(f) Fuel flow spine on lube oil filter.(g) First Fill of lube oil and coolant.(h) Electric stater motor with soft start engagament feature.(i) Battery Chrging alternator. |
| 38 | 2. ALTERNATOR:-(a) Brushless type screen protected, revolving field self exited alterntor confirming to IS/IEC 60034-1.(b) Better motor starting capability.(c) Best in class efficiency.(d) Compact design with sealed bearing for longer life and lesser maintenace.(e) Impregnation on all wound components for better mechanical strength. |
| 39 | 3. CONTROL PANEL :-(a) PS0602 controller or equivalent.(b) Busbar suitable with incoming and outgoing terminals.(c) Indicating lamps for 'Load ON' and set running instruments fuses duly wired and ferruled.(d) MCCB of suitable rating with short circuit protection.(e) AC/DC sepration inside control panel. |
| 40 | 4. SILENCER :-(a) Hospital grade silencer inside canopy with rain capacity suitably optimised to meet stringent noise limit.(b) Silencer specifically tuned to EATS.5. MOUNTING ARRANGEMENTS :-(a) Engine and alternator on are mounted on a common MS fabricated base frame with AVM pads.(b) Base frame with integral fuel tank and DEF tank is provided with drain plug, air vent, inlet and outlet connection and provision for cleaning.(c) Skid Mounting radiator. |
| 41 | 6. ACOUSTIC ENCLOSURE :-(a) Soecially designed to meet stringent MoFF/CPCB norms of 75 dBA @ 1 mtr at 75% load under free field conditions.(b) The acoustic enclosure is made CRCA sheet in munsell green shade and a structural/sheet base frame painted in black.(c) 11 tank pretreatment process and UV resistant powder coating of all parts to withstand extreme enviornment.(d) High quiality noise absorbment and fire-retardant grade acoustic insulation material (Rockwool) complying to IS 8183. Please Enable Macros to View BoQ information |
| 42 | 6. ACOUSTIC ENCLOSURE :-(a) Soecially designed to meet stringent MoFF/CPCB norms of 75 dBA @ 1 mtr at 75% load under free field conditions.(b) The acoustic enclosure is made CRCA sheet in munsell green shade and a structural/sheet base frame painted in black.(c) 11 tank pretreatment process and UV resistant powder coating of all parts to withstand extreme enviornment.(d) High quiality noise absorbment and fire-retardant grade acoustic insulation material (Rockwool) complying to IS 8183. Please Enable Macros to View BoQ information |
