PROVISION OF MOBILE TRANSFORMER AT AFA HYDERABAD

Amount

Supply, install, testing and commissioning of Transformer floor mounted capacity 500 KVA, step down, Outdoor type 11 KV/0.433 KV,50 Hz, 3-phase AC double copper wound, oil immersed, Oil Naturally Air Naturally (ONAN) cooled with external cooling tubes, transformer delta connection on HV side and star connection on LV side in accordance with vector symbol DyN-11 (vector group 4) and having tapping of + or - 7.5% in equal step of 2.5 % changed by means of off load tap changing arrangement and impedence not more than 4.5%. The voltage regulation shall be as per IS including first fill of transformer oil including all fittings /accessories as specified in SSR Part -I and IS -1180. The transformer should have cable box on both HT & LT side and brass bushing rod on both HT & LT side . The limit of temp rise after continuous full load run as specified in SSR Part-I and as per IS -1180 (Part-I) (2014) with total losses should not be more than 1430 W at 50% and 4100 W at 100% load and complies with BEE level-2 latest shall be suitably adjusted to suit the maximum ambient temp prevailing at site complete all as specified and as directed comprising with and including the following specifications:-

Type of connection arrangement :- MS cable termination box on both HT and LT side. Cable box on LT side consisting of 04 Nos porcelain bushing with brass bushing rods and nuts washerwith extended neutral terminal with bushing on the transformer body for terminating earthing strip and suitable for terminating of cable LT 1100 Volt grade XLPE insulated heavy duty Aluminium including gland joint complete

Cable terminal box HV grade suitable to make termination with 3 core 185/240 sqmm XLPE HT Cable.

Oil Conservator with filter type drain valve and oil level guage.

Thermometer Pocket

Two Earthing Terminal on tank body to facilitate fixing of 32 x 6mm GI strip.

One No Thermometer Dial type vapour pressure type having range 0-120 degree centigrade with maximum temperature indicator and re-setting device to maximum temperature including needle of temperature gauge : Max reading painted terminal.

Rating plate with terminal marking plate.

Oil drain filter valve.

Oil filling port on top cover with plug.

Air release valve / plug.

First fill of transformer oil conforming to relevant IS 335.1993 (Fourth revision) and with dielectric strength more than 50 KV

Inspection cover.

Lifting lugs and jack lifting pad support.

Explosion vent with double diaphragm and sight glass.

Silica gel breather or with connecting pipe, first fill of dehydrating agent.

Hand hole of sufficient size to assess the interior of the tank.

Cover lifting eyes.

Oil temperature indicator of approved range, including shut of valve between conservator and main tank.

Drain valve with threaded adaptor.

Filter valve with threaded adaptor.

Extra bushing for neutral out side the LV side cable terminal box. Note: 1. All routine tests/Pre commissioning tests to be carried out at site after Installation of transformer in presence of Rep of Accepting Officer or Electrical Inspector. 2. OEM Test certificate shall be furnished by the contractor as per relevant IS. 3. GA drawing and Design drawing shall be submitted for approval of Accepting Officer before placing Order. 4. Factory inspection of transformer to be carried out in presence of rep of accepting officer nominated prior to dispatch from factory.

M & L fabricated trolley for mounting transformer of 500 KVA on iron sheet base of min thickness 5mm duly mounted on angle iron including iron fencing to cover up the entire transformer with necessary connecting parts/items such as nut bolts washers etc. The dimention of the trolley is 3658 x 1229 x 2300 mm size to be mounted on suitable size of wheels with reputed company`s tyres of min ground clearence from axle 300 mm and designed to caryy min weight 3.0 ton including two coats of powder coated synthetic enamel paint over red oxide primer as applcable and directed by Eng-in-Charge . Necessary arrangements /mechanism to be provided for pulling the trolley complete all as specified and as directed. Note: Necessary drawings to get approved by Garrision Engineer before commencing / fabrication the trolly.

Supply and fix cable jointing kit for 11 KV grade cable for indoor termination, heatshrink type, joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, Al conductor cable of size150 sqmm to 185 sqmm complete all as specified and as directed.

Supply, laying & testing cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty)with stranded aluminium conductor, 11000 volts grade, of size 3 core 185 sq mm complete all as specified and as directed.

Supply, laying & testing cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty)with stranded aluminium conductor, 1100 volts grade, of size 3.5 core 300 sq mm complete all as specified and as directed.

Supply and fix cable jointing kit for 11 KV grade cable for outdoor termination, heatshrink type, joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, Al conductor cable of size 240 sqmm to 300 sqmm complete all as specified and as directed.

LEOENTERPRISES (BID ID -3096790)

SHANTI MARKETING AND SERVICES (BID ID -3107191)

L and S ENTERPRISES (BID ID -3102883)

AKSHITA ELECTRICAL (BID ID -3103922)

M/S Harika enterprises (BID ID -3098464)

POWER CONSTRUCTION COMPANY (BID ID -3108856)

DPS sales and services india (BID ID -3108990)

MONA GENERATOR SEVICES PVT. LTD. (BID ID -3108250)

VBK ELECTRICALS AND AGENCIES PRIVATE LIMITED (BID ID -3103679)