PROVISION OF 500 KVA TRANSFORMER WITH ACCESSORIES FOR SIMULATOR COMPLEX AT ARTY CENTRE HYDERABADUNDER GE GOLCONDA

Excavation in trenches in hard / dense soil not execeeding 1.5 m wide & not exceeding 1.5 m in depth and not exceeding 10 Sqm on plan for laying cables in trenches / erection of pole / stay assembly and getting out complete all as specified and directed.

Returning filling in trenches, spreading, levelling, watering and well ramming in layers not exceeding 25 cm thick complete complete all as specified and directed.

Removing of suplus excavated soil to a distance not exceeding 50 m and depositing where directed at a level not exceeding 1.5 m above starting point complete all as specified and directed.

M&L sand cushioning to under ground cable with dry sand complete all as specified and directed. Note. Punned thickness of sand to be considered for measurement purpose.

Supply and laying un-reinforced precast concerete cable cover, class HV, type 1 flat size 300 mm x180 mm x 40 mm for cable protection complete all as specified and directed.

Supply and laying un-reinforced precast concerete cable cover, class LV, type 1 flat size 250 mm x150 mm x 40 mm for cable protection complete all as specified and directed.

Supply, laying & testing cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire rmoured, electric power cables (heavy duty) with stranded aluminium conductor, 1100 volts grade for the following sizes complete all as specified and directed :-.

3.5 core x 400 Sq mm

3.5 core x 300 Sq mm

3.5 core x 35 Sq mm

Supply and lay in trenches/drawn through pipes or in road crossings/ paths/drains/ ducts/ floors/along poles/ equipments etc., of HT cable XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, heavy duty electric cable with aluminium conductor, 11000 volts earthed grade confirming to IS· 7098 (Part-2) 2011 of cross sectional area 95Sqmm x 3core including connecting up using suitable size aluminium lugs testing and commissioning complete all as specified and as directed. Note : Excavation earth work, sand cushioning and brick protection shall be measured separately under relevant items.

Each Job

M&L anti-climbing device, spikes type fabricated out of M.S. bars (round, square and flat) and including nuts, bolts, washers and welding in two halves made to shape to suit the cross section of the pole complete all as specified and directed.

12 KV SF6 Insulated Compact Ring Main Unit (RMU) Wherever applicable, offered 12KV SF6 Outdoor Ring Main Unit (RMU), should comprise of required number of 630A Load break Switches & 630 A Vacuum “T” OFF Circuit Breaker with Self Powered (3 O/C & 1E/F) Relays with RS-485 port for communication on MODBUS. RMU shall be one side extensible for facilitating quick addition of future loads. Further provision shall be available in product portfolio for extension of RMU so as to create combinations according to site requirement.

Load break switch (630A) Load break switch comprising of the following:- (i) Motorized Load Break switch for 12 KV, 630 A and earthing switch with making capacity (ii) “Live Cable” LED Indicators through Capacitor Voltage Dividers mounted on the bushings (iii) Mechanical ON/OFF/EARTH Indication (iv) Anti-reflex operating handle (v) Cable Testing facility after opening the cable covers after doing the earthing suitably and without disconnecting the Cable terminations. (vi) Cable boxes suitable for 1x3Cx300 sq mm XLPE Cable with right angle Cable Termination Protectors (vii) Cable Door should be arc proof and interlocked with respective Earthing Switches. For safety of operator it should not be possible to open the cable Door unless the earth Switch is ON.

Supply and lay in trenches / drawn through pipes or in road crossings / paths / drains / ducts / floors / along poles / equipments etc, of HT cable XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, heavy duty electric cable with aluminium conductor, 11000 volts earthed grade confirming to IS· 7098 (Part-2) 2011 of cross sectional area 185 Sqmm x 3 core and including connecting up using suitable size aluminium lugs testing and commissioning complete all as specified and directed. Note : Excavation earth work, sand cushioning and cable protection shall be measured and paid separately under relevant items.

Metering Air insulated module The dedicated metering cubicle with each RMU comprising of the following: (i) 3 nos. Single Phase PTs - 11kV/V3/110/V3 ,Cl-0.5, 50 VA (ii) Space Heater with thermostat (iii)Terminal Blocks (iv) Digital Multi Function Meter ,Cl-0.5 for individual outgoing transformers (v) Battery/Charger . Input Voltage of 230VAC for the battery charger shall be provided at site. (vi) Auxiliary relays for OTI,WTI, Bucholz -Alarm & Trip for all VCBs. (vii) 8 Window Alarm Annunciator (viii) Hooter

Metering Air insulated module The dedicated metering cubicle with each RMU comprising of the following:- (i) 3 nos. Single Phase PTs - 11kV/V3/110/V3 ,Cl-0.5, 50 VA (ii) Space Heater with thermostat (iii) Terminal Blocks (iv) Digital Multi Function Meter, Cl-0.5 for individual outgoing transformers (v) Battery / Charger Input Voltage of 230VAC for the battery charger shall be provided at site. (vi) Auxiliary relays for OTI,WTI,Bucholz -Alarm & Trip for all VCBs. (vii) 8 Window Alarm Annunciator (viii) Hooter

GENERAL TECHNICAL REQUIREMENTS Service Conditions (i) The Ring Main unit shall be suitable for operations at a height of 1000 meters above sea level, IEC 60120. (ii) The RMU shall be capable of operating normally within the following temperature ranges: (iii) Maximum air temperature: +40 deg C (without current deration) (iv) Maximum value for 24 Hr mean: +35 deg C (v) Minimum air temperature:- 20 deg C (vi) The Ring Main Unit shall be capable of being exposed to high relative humidity (max 95%) and ambient air pollution. (vii) The Ring Main Unit shall be capable of being operated in electrically exposed locations

Design Parameters Ring Main Unit, Electrical data Rated voltage KV 12 KV 1 Power frequency withstand voltage KV 28 2 Impulse withstand voltage KV 75 3 Rated frequency Hz 50 4 Rated current busbars A 630 5 Rated current (cable switch) A 630 6 Rated current (T-off) A 630 Breaking capacities 7 active load A 630 8 closed loop (cable switch) A 630 9 short circuit breaking current (T-off VCB) kA 21 10 Rated making capacity kA 52.5 11 Rated short time current 3 sec. kA 21 12 Internal Arc AFLR rating 1 sec. kA 21

Circuit Breaker (630A) Circuit Breaker comprising of the following:- (i) Motorized Vacuum circuit breaker for 630A and Earthing Switch with making capacity (ii) Fault arc Interruption should be in Vacuum only. (iii) Auxiliary contacts 2NO and 2NC (iv) Anti-reflex operating handle (v) “Live Cable” LED Indicators thru Capacitor Voltage Dividers mounted on the bushings. (vi) 3O/C + 1E/F self powered relay with Low and high set for Over current and Earth Fault. Relay should have facility to trip the breaker from remote commands without requiring shunt trip coil. (vii) Mechanical ON/OFF/EARTH Indication (viii) Cable boxes suitable towards front/rear side, for 1 X 3C x 300 sq mm XLPE Cable with right angle Cable Termination protectors

Note :- 1. An operator situated in front, lateral and rear [A-FLR 21 KA-1 Sec. Downwards Exhaust, for Tank as well as Cable Compartment] of the RMU Switch board during an internal fault shall not be exposed to the effects of Arcing. Internal Arc Type Test Report for IAC AFLR 21 kA for 1 Sec for both Tank & Cable Box shall be for minimum as per OEM standards. 2. All operations shall of the RMU shall be as per OEM standards. 3. Copy of the Type Test reports as per latest IEC shall be submitted along with drawings for approvals. 4. Factory Inspection will be carried out before Dispatching the item by AGE E/M / GE or as detail by Accepting officer. Neccessary arrangment will done by the contratcor for testing. 5. After Installation Testing and commisioning carried out in Presence of SEI

General data 1 Standard to which Switchgear complies IEC 2 Type of Ring Main Unit Outdoor, Metal Enclosed, bolted type. 3 Number of phases 3 4 Whether RMU is type tested in accordance with latest IEC Yes 5 Whether facility is provided with pressure relief Yes 6 Insulating gas SF6 7 Nominal operating gas pressure 1.2 bar abs. 20° C 8 Gas leakage rate / annum % 0.1 % per annum 9 Expected operating lifetime 30 years 10 Whether facilities for gas monitoring- Yes,temperature compensated manometer shall be provided 11 Material used in tank construction- Robotically welded, non -ferrous non-magnetic Stainless steel sheet, min 2.5 mm (cast resin, manual weleding or any other old techology is not permissible)

(a) Rating and Terminal marking plate- one (b) Earthing Terminal - Two (c) Lifting Lugs - Two (d) Drain valve with Blanking plate - one (e) Filter Valve with blanking plate- one (f) Conservator - one (g) Oil Level indicator with minimum marking (h) Dyhydrating breather - one (j) Air Release devise - one (k) Thermometer pocket - one (l) Pressure relief valve - one (m) Roller unidirectional - - four (n) Both side (HV and LV) cable Box (o) Separate Brought out Neutral Terminal (p) off Circuit Tap Changer (q) 100 MM dia stem type Thermometer

Note: (i) Commissioning of the transformer to be done by SEI/EI as detailed. Contractor should intimate one month in advance for commissioning of the same. Necessary arrangement for testing to be done by the contractor Rates for the same deemed to be included in the quoted rate. (ii) Foundation for Transformer will be measured and paid Seperately. (iii) Coated Rates Including Fansing for Transformer.

M&L electrical earthing complete with galvanised steel earth plate electrode 60 cm x 60 cm x 6 mm thick buried directly in ground vertically (earth pit not less than 2.25 m deep below normal GL) with top edge of the earth plate at a depth not less than 1.5 m below normal GL and including connected to GI wire 4 mm dia by means of bolts, nuts, washers made of galvanized iron connected to earthing to body of equipment /DBs, GI wire protected by 15 mm dia light grade GI pipe upto connecting point and watering arrangements with 20 mm dia GI pipe medium grade and GI funnel all as specified and shown in Electrical Plate No. 3. of MES Schedule (SSR) Part I complete all as specified and directed.

M&L construction of transformer foundation of size 1.80 m x l.50 m x l.50 m (above GL) and 2.20 m x l.90 m x l.0 m (below GL) including excavation in any type of soil, PCC 1:4:8 type D2 bed concrete , Random Rubble stone masonry in CM 1:6 for foundation, plastering in CM 1:4, 20 mm thick and including 100 mm thick PCC 1:2:4 coping, RFR, removal of surplus soil and applying three coats of white wash complete all as specified and directed.

Supply and lay 100 mm bore GI tube "light grade" ISI marked with all fittings, complete, fixed to walls, pole ceiling or laid in trenches for cable protection at road crossing / on poles etc, complete all as specified and directed.