MAHARASHTRA STATE ELECTRICITY DIST. CO. LTD.

O&M CIRCLE VASAI

“Deepashree”, 2/3rd Floor, Navghar,

Vasai Road (East), Dist: Thane 401 202.

Phone: 95250 – 239 3373, 239 0154, 239 1143 (Fax)

TENDER NO. 18 / 2007-2008.

For

SUPPLY OF 22 KV/110 V OUTDOOR TYPE (OILCOOLED) POTENTIAL TRANSFORMER

For Substation Feeder Metering

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MAHARASHTRA STATE ELECTRICITY DIST. CO. LTD.,O&M CIRCLE, VASAI.

“Deepashree”, 2/3rd Floor, Navghar, Vasai Road (East), Pin: 401 202.

INVITATION OF TENDER AND INSTRUCTIONS TO TENDERER

TENDER FORM

(To be returned duly filled in and signed as indicated)

Tender No.18/2007– 2008 Returnable not later than 15.00 hrs. on date 24.10.07. Tender will be opened on Date 24.10.07. at 16.00 Hrs (If possible).

To,M/s. -----------------------------------------------

-------------------------------------------------

-------------------------------------------------

Dear Sirs,

Please quote your lowest rates for delivery to Palghar Stores for supply of material as mentioned in Schedule “A” and return the tender document duly signed stating the delivery period in Column No.9 of the Schedule “A” enclosed. Rate should be offered on Schedule “A” only (and not on letter-head) duly signed and shall bear the seal of the Company. Please refer Annexure I, II and III for detail specifications. Thanking you.

Yours faithfully,

Date: SUPERIINTENDING ENGINEER

M.S.E.D.C.L., VASAI CIRCLE.

IMPORTANT

Tender should be accompanied by the following documents: -1) Copy of valid license to manufacture the material, indicating capacity if any.2) Copy of I.S.I. registration of the product.3) If the firm is a S.S.I. unit, valid S.S.I. registration certificate.4) Past experience /supply of similar type of material to M.S.E.D.C.L./Govt./Public undertaking. (Giving full details of order)5) Literature of the product.

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MAHARASHTRA STATE ELECTRICITY DIST. CO. LTD.,O&M CIRCLE, VASAI.

Instructions to Supplier

I. PRICE: -

Prices are acceptable only at F.O.R. destination basis inclusive of risk in transit and freight paid basis showing the break up as desired in schedule 'A'. It shall be noted that offers not conforming to F.O.R. destination basis and to the unit as specified in Schedule 'A' shall not be considered even though they may be the lowest. MSEDCL reserves the right to accept or reject any of the offers submitted by the tenderer without assigning any reasons thereof. Rates should be exclusive of taxes. The tentative cost of tender is Rs. 5 lakhs.

II. EXCISE DUTY: -

Excise duty will be paid extra, if applicable and agreed to in the contract, at the rates applicable at the time of dispatch (within the contractual delivery period) on Ex-works prices to be indicated by the supplier against copy of E.D. gate pass. Benefits due to further changes in MODVAT system, if any, should be passed on to M.S.E.D.C.L.

III. SALE TAX/VAT: -

1) The MSEDCL is registered under Sale Tax Act/Ordinance of the Maharashtra State, so also under the Central Sales Tax Act 1956.

2) Declaration on form 'E/C' will be issued whenever and wherever applicable.

3) Suppliers should give his Sales Tax Registration No./VAT No. and mention tax applicable for this offer.

1. Sale Tax/VAT: % with 'E' form.

2. Central Sale Tax/VAT: % with 'C' form.

3. Sale Tax/Central Sale Tax is not Levi able as my sales are second sale.

My Sale Tax/VAT No. Registration No. -------------------------------Goods will be moving from ----------------------------------State to---------------------------------------------------------

IV. OFFERING THE MATERIAL ON SLAB BASIS: -Suppliers are requested to quote the rates on unit basis only. The offer with price of the material quoted in slab basis and or with any conditional discount on any account viz. payment; quantity, etc. shall be rejected. The suppliers shall quote the delivery only in the unit of the item specified in schedule ‘A’. Similarly if the supplier quotes combined delivery in assorted sizes for all the items, he would be required to supply all the items ordered on him in fair proportion or particular item/items as may be required by the purchaser.

Seal & Signature of the supplier

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V. DISCLOSING THE NAME OF THE MANUFACTURER: -

Whenever a material is described by the name of a particular brand or being offered on re-sale basis, the supplier shall specifically disclose the name of the original supplier or the manufacturer. The firm shall not be allowed to supply the material offered from any other manufacturer unless prior permission in writing is obtained from the undersigned.

VI. QUOTATION: -

1) Supplier shall quote his rate per unit specified in schedule ‘A’ in figures as well as in words. Any variation in the rates etc. will not be allowed on any ground such as mistake, misunderstanding etc. after the tender has been submitted. The tendered rate must include in general (a) all charges for container and packing (b) all charges to effect F.O.R. destination of the supplies.

2) Suppliers printed terms and conditions will not be considered to form part of the Tender.

3) In case of divergence between the rates in figures and words, it will be considered to read the rate most favorable to the MSEDCL.

VII. AMBIGUITY IN QUOTATION: -

Suppliers are requested to please make a note that in case of ambiguous terms in respect of F.O.R. destination condition excise duty, sale tax/VAT or if the blanks are not filled in/unanswered; the offer/tender shall be liable to be rejected.

VIII. FILLING IN OF QUESTIONNAIRE: -

Suppliers are requested to ensure that the comments against each and every item/clause of Annexure/Questionnaire shall be clearly filled in and answered. Any item/clause shall not be left blank or "NOT APPLICABLE" shall be written against it.

IX. ADDITIONS/ ALTERATIONS PROHIBITED: -

Suppliers shall not make any additions, alterations or changes in the tender form and the conditions of tender and supply including the description of material mentioned. They should quote rate for the material described or write the words 'Not Quoted' against each of item in schedule ‘A’

X. SIGNING OF TENDER DOCUMENTS: -

Offers must be submitted in the tender documents only and be clearly and legibly filled in with all schedule and must be either in ink or typewritten. Offer and all documents comprising of tender details, tender form, conditions of tender and supply questionnaires, drawings, test certificates and other documents should be duly signed on each page and corrections if any, to the information filled in should not be overwritten and new details given duly initialed. Tenders not signed as above shall be liable to be rejected.

Seal & Signature of the supplier.

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XI. QUOTATIONS OFFERED: -

If the supplier is not in a position to quote for entire quantity and for delivery as required, state specifically the quantities, which they can deliver at the price, quoted. Silence on this point will be considered for supply at quoted rate in full quantity as per delivery offered.

XII. TIMELY SUBMISSION OF OFFER: -

a) Telegraphic offers or offers received in the form of telex message shall not be entertained

b) Tender documents received after the due date and time of submission will not be accepted.

c) Tender received in person or by post after the due date and time of submission shall not be opened and no correspondence will be entertained. The Company shall not be responsible for any cause arising out of such delay.

d) In case the date of opening happens to be a holiday, the tender shall be opened on the next working day at the same time.

The MSEDCL reserves the right to reject any or all offers without assigning any reason whatsoever.

XIII. DISREGARD OF TENDER CONDITIONS: -

The MSEDCL reserves the right to reject any tender that does not confirm to any of the conditions/instructions/specifications etc.

XIV. The supplier should clear all the points with the concern officials regarding any confusion with terms and conditions and should note that no correspondence shall be entertained after the due date and time of submission of tender unless otherwise sought by the office.

XV. The Tenderer should have prior experience of supplying similar items to different Govt. / Private companies. To judge the capacity and capability of the supplier or his manufacturer the supplier shall furnish the list of orders executed by him or his manufacturer/stockiest for the last 3 years indicating the name of the order, name of the purchaser, quantity ordered, value of the order, and any deviation in delivery period. Details of pending orders and quantities outstanding against orders of this office and other should be indicated separately.

XVI. ACCEPTANCE OF TENDER: -The MSEDCL does not bind itself to accept the lowest offer or else with any reasons be assigned for the rejection of any tender or part of tender. It is also not binding on the MSEDCL to disclose any analysis report on tender/samples. The supplier on his part binds himself to supply any item or items selected from his offer in part or at the option of the MSEDCL.

The MSEDCL reserves the right to order /procure any quantity in excess to the extent of 50% or part of the quantities offered by the supplier.

Seal & Signature of the supplier.

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XVII. EARNEST MONEY DEPOSIT: -

Notwithstanding that the supplier is registered with the MSEDCL under different classes A, B, & C, suppliers should pay the Earnest Money at 1% (one percent) of the total value of the tender subject to minimum of Rs.250/- unless the firm is exempted on account of statutory directives. Earnest Money shall be paid in Cash/DD to this office drawn on any Scheduled/Nationalized Bank in Maharashtra. A reference to the tender number should be given in case the E.M.D .is paid in cash before the due date of the tender and relevant deposit amount and receipt no. shall be mentioned in the tender. Interest shall not be allowed on the Earnest Money Deposit. Earnest Money Deposit shall be forfeited in the following situations:-

(1) In case the supplier withdraws tender/offer during the validity period.(2) In case the supplier fails to pay the Security Deposit within stipulated period if the

contract is awarded and(3) In case the supplier fails to execute the order.

XVIII. EARNEST MONEY OF UNSUCCESSFUL SUPPLIER.

Earnest Money Deposit shall be returned to the unsuccessful supplier within three months after the tender has been decided and on submission of original receipt of E.M.D. paid to the MSEDCL.

XIX. OFFER OF SSI UNIT: -

Offers of the SSI unit shall not be considered for concession applicable as per applicable provisions unless the unit is registered with Directorate of Industries of the Government for manufacturing the item tendered/offered and have valid Registration Certificate up to the date of estimated completion of the supplies. The SSI Registration Certificate must include the item for which offer has been submitted.

XX. DELIVERY: -

The supplier should quote clear delivery period in Schedule ‘A’. Offers with qualified delivery schedule which directly or indirectly affects conditions of tender and supply shall be liable for rejection. In the event of the tender being accepted for supply of the material, the supplier should strictly adhere to the delivery period as the time being essence of the contract. The delivery will be deemed to have been completed on the date of R.C/on the date of receipt of material at stores in case of door delivery.

XXI. PENALTY FOR LATE DELIVERY / LIQUIDATED DAMAGES: -

In case the materials are not delivered in time, the supplier shall be liable to pay penalty/liquidated damages @ 1/2% of the contract price per week subject to a maximum of 10% reckoned on the contract value of such complete portion or section of the plant, equipment or material, including the portion supplied which could not be brought into commercial use due to any part thereof not being delivered in time. All the quotations dispute or differences arising under out of order in connection with the contract, if concluded, shall be subject to the jurisdiction of Vasai Court.

Seal & Signature of the supplier.CONDITIONS OF SUPPLY: -

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1) Quality of supply: - Materials offered should be strictly as per specification mentioned in schedule ‘A’ and strictly in accordance with and as per the approved standard/samples. Preference will be given to ISI mark material. In case of material for which there are no standards of approved samples the supplies shall be of the best workmanship and quality available. You will keep this office informed of the progress of manufacture of the material. The goods shall be subject to the approval of the consignee after receipt of stores.

2) Validity of the tender: - The validity period of the offer/tender should be 90 (ninety) days from the date of opening of the tender. The supplier is bound to supply the material as per his offer during validity period.

3) Security Deposit: - Supplier should pay security deposit at the rate of 10% of the value of the order within seven days of receipt of the order failing which order will stand cancelled automatically without any further intimation. Security Deposit is payable by Cash/ DD of scheduled Bank. The SSI unit has to pay security deposit as per statutory provisions.

4) Payment of Bills: - 100% payment will be made by A/c Payee Cheque on receipt of 100% material at Stores in good condition and on receipt of S.R. Note from the stores. The payment will be made on receipt of funds only.

5) Insurance: - In all cases the insurance shall be covered by you with Government Insurance Fund or if so desired by the MSEDCL with your or other conditions of contract for the total value of the order plus 10% to cover freight, Sales Tax and other incidental charges.

6) Guarantee: - Material should be guaranteed for workmanship and quality for a period of 18 months from the date of supply or 12 months from the date of commissioning whichever is earlier. You shall replace any defective material supplied free of cost immediately.]

7) Consignee: - The Store Superintendent. Store Centre, M.S.E.D.C.L., Palghar, Dist Thane, Maharashtra.

8) Testing Condition: - The CTs shall be supplied as per MSEDCL specifications and drawing. Type test from NABL is essential before call for testing. 100 % material will be tested by the Testing Engineer, Vasai before transportation to consignee at your cost, including testing charges. Test certificate should be submitted along with the bill. All reasonable facilities should be extended to the inspecting engineer free of cost. The material will be inspected within 15 days on receipt of inspection call. The delay in inspection will be at our account.

9) Name Plate: - The instrument transformers shall be provided with non-corrosive, legible nameplates with the information specified in relevant standards, duly engraved / punched on it. The materials shall be embossed/marked with words "MSEDCL. Vasai Circle".

10) Supplier shall have to submit the solvency certificate from any nationalized or schedule bank equivalent to amount of estimated value of this tender.

Seal & Signature of the Supplier.

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11) Other conditions of supply if any: - As per Annexure I, II & III.

12) You will be deemed to be fully aware of the MSEDCL's General Conditions of contract for the supply of plant, equipment and material particularly in respect of Security Deposits, terms of payment, penalty for late delivery etc. And any ignorance of these conditions will not exempt you from your liability to abide by the same. Copies are available from the MSEDCL's Office.

13) PTs should be supplied of approved make by MSEDCL, Head Office. A list of which is enclosed herewith. If any contractor supplies CTs of make not included in the list, should procure a copy of H.O order / approval along with the tender.

14) Earthing of PTs should be done effectively. (Earthing resistance between 0.5 to 1 ohms range).

15)All the relevant drawings in triplicate shall be submitted alongwith the tender documents to S.E., Vasai Circle. The drawings duly approved by the concern authority/officials would be issued separately. The approval of drawing and waival / approval of Type Test reports wherever issued, shall not relieve you from your responsibility and liability for ensuring correctness and correct interpretation for meeting the requirement as specified in the specifications and the relevant IS/IEC, please note.

16) All disputes/arbitration etc. are subject to Vasai jurisdiction only.

17) MSEDCL reserves the right to accept or reject any of the offers submitted by the tenderer without assigning any reasons thereof.

Seal & Signature of the supplier

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TECHNICAL SPECIFICATION FOR 11KV, 22 KV and 33 KV CT & PT

1.0 SCOPE:

1.1 This specification covers design, manufacture, assembly, testing at manufacturer’s works, packing and delivery of outdoor instrument transformers for metering of supplies made to 11 KV, 22 kV and 33 KV consumers in Maharashtra State (India).

1.2 It is not the intent to specify completely herein all details of the design and construction of equipments. However, the equipment shall conform in all respects to high standards of engineering, design and workmanship mentioned in clause 4.0 and shall be capable of performing in continuous commercial operation up to the supplier’s guarantee in a manner acceptable to the purchaser, who will interpret the meanings of drawings and specification and shall have the power to reject any work or material which, in his judgment, is not in accordance therewith.

1.3 The equipments offered shall be complete with all components necessary for their effective and trouble free operation. Such components shall be deemed to be within the scope of supplier's supply irrespective of whether those are specifically brought out in this specification and/or the commercial order or not.

2.0 SERVICE CONDITIONS:

2.1 Equipment to be supplied against this specification shall be suitable for satisfactory continuous operation under the following tropical conditions.

2.1.1 Maximum ambient temperature in open air (C): 50.002.1.2 Maximum ambient temperature in shade (C) 45.002.1.3 Minimum temperature in shade(C): 03.502.1.4 Relative humidity (%) 10 to 1002.1.5 Maximum annual rainfall (mm) 14502.1.6 Maximum wind pressure (Kg/m2) 1502.1.7 Maximum altitude above mean sea level (Mtrs) 10002.1.8 Isoceraunic level (days/year) 502.1.9 Seismic level (Horizontal acceleration) 0.3 g.2.1.10 General nature of climate : Moderately hot and humid

tropical climate, conducive to rust and fungus growth..

3.0 STANDARDS

Unless otherwise specified elsewhere in this specification, therating, performance and testing of the instrument transformers and accessories shall conform to the latest revisions, of all relevant standards listed in Annexure-I.

4.0 PRINCIPAL TECHNICAL PARAMETERS:

The Current transformers covered in this specification shall meet the technical requirements listed in Annexure II.

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5.0 GENERAL TECHNICAL REQUIREMENTS: 5.1 COMMON FOR ALL INSTRUMENT TRANSFORMERS

5.1.1. The insulation of the instrument transformers shall be so designed that the internal insulation shall have higher electrical withstand capability than the external insulation. The designed dielectric withstand values of external and internal insulations shall be clearly brought out in the GTP(Guaranteed Technical particulars). The dielectric withstand values specified in this specification are meant for fully assembled instrument transformer.

5.1.2 PORCELAIN HOUSING:

5.1.2.1.The porcelain housing shall be of a single piece construction without any joint or coupling .The housing shall be made of homogeneous, vitreous porcelain of high mechanical and dielectric strength. Glazing of porcelain shall be of uniform brown or dark brown colour with a smooth surface arranged to shed away rainwater or condensed water particles (fog.). The profile of porcelain shall be aerodynamic type as per IEC 815.

5.1.2.2.The vertical clearance of porcelain housing shall be atleast 370mm for 11 KV & 450 mm for 22 kV and 33 KV.

5.1.2.3. Details of attachment of metallic flanges to the porcelain for pressure release valve, and primary/secondary terminals shall be brought out in the offer.

5.1.2.4. Nuts and bolts or screws used for the fixation of inter facing porcelain component for taking out the terminals shall be provided on flanges and not on porcelain.

5.1.3 METAL TANKS:

5.1.3.1. The metal tanks shall have bare minimum number of welded joints so as to minimize possible locations of oil leakage. The metal tanks shall be made out of mild steel. The thickness and metal of the tank shall be more than 3.00 mm. Actual thickness provided shall be specified by the tenderer.

5.1.3.2. The bottom of the tank shall be adequately accessible for periodical maintenance of open surface.

5.1.4. SURFACE FINISH

The metal tanks shall be coated with atleast two coats of zinc rich epoxy painting. All the ferrous hardware, exposed to atmosphere, shall be hot dip galvanized. All other fixing nuts, bolts, washers in the electrical current path shall be made out of stainless steel.

5.1.5. INSULATING OIL:

Insulating oil required for first filling of the instrument transformer shall be covered in bidder's scope of supply. The oil shall meet the requirements of latest edition of

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IS- 335. The equipment shall be completely oil filled type and use of insulating materials such as quartz and marble etc. is not permissible.

5.1.6. PREVENTION OF OIL LEAKAGES & ENTRY OF MOISTURE

5.1.6.1. As specified elsewhere in this specification, the instrument transformer shall be guaranteed for a trouble free and maintenance - free performance for a

period as specified. Therefore, the bidder shall ensure that the sealing of instrument transformer is properly achieved. In this connection the arrangement provided by the bidder at various locations including the following ones shall be described, supported by sectional drawings.

i) Locations  of emergence of primary and  secondary terminals.

ii) Interface between porcelain housing and metal tanks

iii) Cover of the secondary terminal box 5.1.6.2. Nuts and bolts or screws used for fixation of the interfacing porcelain bushings for taking out terminals shall be provided on flanges cemented to the bushings and not on the porcelain.

5.1.6.3. For gasket joints, wherever used nitrite butyl rubber gaskets shall be used. The gasket shall be fitted in properly machined groove with adequate space for accommodating the gasket under compression.

5.1.7. OIL LEVEL INDICATORS

5.1.7.1. For compensation of variation in volume of the oil due to temperature variation, nitrogen cushion or Stainless Steel bellows shall be used. Rubber diaphragms shall not be permitted for this purpose.

5.1.7.2. Instrument transformer provided with nitrogen cushion for Compensation of oil volume variation shall be provided with prismatic type oil sight window at suitable location so that the oil level is clearly visible with naked eye to an observer standing at ground level. If metal bellow is used for the above purpose, a ground glass window shall be provided to monitor the position of metal bellow.

5.1.8. EARTHING

Metal tank of the instrument transformer shall be provided with two separate earthing terminals for bolted connection to 50 mm x 8 mm MS flat to be provided by the purchaser, for connection to station earth-mat. The size of two numbers of earthing terminals shall be 16 mm dia x30 mm length, HDG, with one plain washer and one nut.

5.1.9. Instrument transformers shall be provided with suitable lifting arrangement, to lift the entire unit. The lifting arrangement (lifting eye) shall be positioned in such a way as to avoid any damage to the porcelain housing, primary terminals or the tanks during the process of lifting for installation/transport. The general arrangement drawing shall show clearly the

lifting arrangements provided such as lifting eye, lug, guides etc.

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5.1.10. NAME PLATE :

The instrument transformer shall be provided with non-corrosive, legible nameplates, with the information specified in relevant standards, duly engraved/punched on it and shall be attached to the main tank , forming integral part of the instrument transformer.

5.1.11.Mounting details for fixing the instrument transformer on purchaser’s supporting structure shall be strictly in accordance with the mounting details. Base M. S. channels of 75 mm x 40 mm x 5 mm of instrument transformers shall have four equidistant holes at 350 plus or minus 5 mm center.

5.1.12.The terminal connectors required for connection of the instrument transformer to purchaser’s bus bar, shall be arranged by the purchaser.

5.1.13.Enamel, if used for conductor insulation, shall be either polyvinyl acetate type or amide type and shall meet the requirements of IS- 4800. Polyester enamel shall not be used. Double cotton cover, if used, shall be suitably covered to ensure that it does not come in contact with oil.

5.1.14.Oil filling and/or oil sampling cocks, if provided to facilitate factory processing, shall be permanently sealed before dispatch of the Instrument Transformers.

5.1.15. Test Tap shall not be provided.

5.2 POTENTIAL TRANSFORMER (PT):

5.2.1 The PT shall be vacuum filled with oil after processing and hermetically sealed to eliminate breathing and to prevent air and moisture entering the tanks. Method adopted for hermetic sealing shall be described in the offer and shall be subject to approval of the purchaser.

5.2.2 The PT shall be so constructed that it can be easily transported to site within the allowable transport limitations, even in horizontal position, if the transport limitations so demand.

5.2.3 PRIMARY WINDING: 5.2.3.1.Primary winding shall be made of suitably insulated electrolytic copper wire. Type of insulation used shall be described in the offer. The neutral end of

primary winding shall be earthed internally. The method of achieving uniform distribution of surge voltage stress on primary winding shall be given clearly in the offer. There will not be fuse for primary windings.

5.2.3.2.The rating and the diagram plates specified elsewhere in this specifica- tion should also indicate the above reconnection arrangement.

5.2.4 SECONDARY WINDING:

5.2.4.1 Suitably insulated copper wire of electrolytic grade shall be used for secondary windings. Type of insulation used shall be described in the offer. There will not be fuse for secondary windings.

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5.2.4.2 The PT secondary terminal shall be brought out to a weatherproof terminal box. The terminal box shall be provided with removable gland plate and glands suitable for 1100 volts grade PVC insulated, PVC sheathed multi-core 2.5 sq.mm. to 10 sq.mm. stranded copper conductor cable. The terminal box shall be dust and vermin proof. Suitable arrangement space heater shall be provided for drying the air inside the terminal box. The dimensions of the opening of terminal box shall be adequate to enable easy access and working space with the use of normal tools.

5.2.4.3 Polarity shall be invariably marked at the secondary terminals in the terminal box.

5.2.5. The PT shall be provided with a rating plate with dimensions and markings as per IS- 3156. The markings shall be punched and not painted.

5.2.6. PRIMARY TERMINALS:

The primary terminal shall be of size 30 mm dia x 80 mm length for all PTs. The primary terminal shall be of heavily tinned electrolytic copper of 99.9% conductivity. The minimum thickness of tinning shall be 15 microns.

5.2.7 SECONDARY TERMINALS:

For external connection of secondary windings, terminal studs shall be provided with atleast 3 nuts and adequate plain and spring washers. The studs, nuts and washers shall be of brass properly nickel-plated. The size of stud shall be 6 mm outside dia. A length of alteast 15 mm shall be available on the studs for inserting the leads. Horizontal spacing between the centers of adjustant stud shall be atleast 1.5 times the circum dia of the nuts.

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ANNEXURE-I

POTENTIAL TRANSFORMERS

Sr.No. Standard No. Title1) IS-3156 Voltage transformers. .2) IS-2099 High voltage porcelain bushings.3) IS-3347 Dimensions of porcelain transformer bushing.4) IS-335 Insulating oil for transformers and switchgears.5) IS-3202 Code of practice for climate proofing of electrical

equipments.6) IS-2147 Degree of protection provided by enclosures for low

voltages, switchgear and controls.7) IEC-186 Voltage transformers.8) IEC-815 Porcelain housing for instrument transformers.9) Indian Electricity Rules, 1956.

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ANNEXURE IIPRINCIPLE TECHNICAL PARAMETERS OF POTENTIAL TERNSFORMERS.

IS-3156-1992Sr.No. Item Specification.

1 Type Single phase, outdoor type, oil filled,dead tank design.

2 Whether oil filled or dry. Oil filled.3 Type of mounting Pedestal type4 Ratio Type Single Ratio5 Rated voltage factor 1.2 for continuous &1.5 for 30 seconds6 System frequency 50 Hz.7 Core details and purpose Single core & Commercial metering 8 Class of accuracy 0.5 class9 Voltage Ratio Rated Voltage Kv Voltage Ratio

22 22000/√3/110√3V

10 Rated voltage (kV rms) 22

11 Higest system voltage 2412 Basic Insulation (KVP) 125 13 Minimum Creepage Distance

(MM)25mm/kV of Highest system voltage

14 Burden (VA) for single core PT 100VA15 Acceptable limits of Temp. rise As per annexeure III

Note:- 1) Neutral end of the primary winding shall be earthed internally

2) Fuse will not be provided on Primary & Secondary winding.

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ANNEXURE-III

LIMITS OF TEMPERATURE RISE

The temperature rise on any part of equipment shall not exceed the maximum temperature rise specified below under the conditions specified in Test clauses.

Sr.No. Item SpecificationNature of the part of the liquid Maximum values of

Temperature

Deg.C

Temperature rise ata max. ambient air temperature not exceeding 50 Deg.C

Deg.C1) Contacts in air: Silver-faced copper,

Copper alloy or aluminium alloy(See Notes i and ii)

Bare copper or tinned aluminium

105

75

55

252) Contacts in oil :

Silver-faced copper, copper alloy or Aluminium alloy (See Note ii)

Rare copper or tinned aluminium alloy

90

80

40

303) Terminals to be connected to

external conductors by screws orbolts silver-faced (See Note iii)

Bare

105

90

55

404) Metal parts acting as springs (See Note iv) (See Note iv)5) Metal parts in contact with insulation

of following classes:

Class Y : (For non-impregnated materials)

Class A : (For materials immersed in oil or impregnated)

Class E : In air In oil

90

100

100120

40

50

5070

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Class B : in air In oil

Class F : in air In oil

Enamel : oil base Synthetic, in air Synthetic, in oil

130100

155100

100120100

8050

10550

507050

6) Any part of metal or of insulatingMaterial in contact with oil, exceptContacts.

100 50

7) Oil 90 40

NOTES :

i) When applying the temperature rise of 55 deg.C, care should be taken to ensure that no damage is caused to the surrounding insulating materials.

ii) The quality of the silver facing shall be such that a layer of silver remains at the points of contact after the mechanical endurance test. Otherwise, the contacts shall be regarded as “bare”.

iii) The values of temperature and temperature rise are valid whether or not the conductor connected to the terminals is silver-faced.

iv) The temperature shall not reach a value where the elasticity of the materials is impaired. For pure copper, this implies a temperature limit of 75 deg.C.

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MAHARASHTRA STATE ELECTRICITY DIST. CO. LTD.,O&M CIRCLE, VASAI.

To,The Superintending Engineer,M. S. Electricity Dist. Co. Ltd.,Deepshree,2/3rd Floor Navghar, Vasai Road (East)Dist: Thane, Pin Code - 401 202.

Dear Sir,

I/We agree to supply the articles noted above at the rates herein tendered by me/us subject to the conditions of the tender and supply above which I/We have carefully read and which I/ We have thoroughly understood and to which I/We hereby agree.

I / we hereby agree to keep this offer open for 90 days from the date of opening of the tender.

Yours faithfully,

Seal & Signature of the Supplier

Date:

Address:

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MAHARASHTRA STATE ELECTRICITY DIST. CO. LTD.QUESTIONNAIRE

1. The name and address of the Firm/Company tendering quotation.

2. The name and address of proprietor/ partners/director of the Firm/Company.

3. The Name and address of manufacturer 4. SSI REGISTRATION: Whether you are registered as SSI unit with the Government of Maharashtra for the item under purchase. If yes, give SSI Regn. No. and date (Xerox copy of your SSI Regn. Certificate should be enclosed)

5. Whether the supplier is the approved contractor of the MSEDCL? If yes, please state the class and Regn. No. and date.

6. Whether the supplier has paid the required Earnest Money, please state Receipt No. and the amount for which the Earnest Money is paid.

7. Whether the equipments offered con- firm to relevant specifications.

8. Whether this MSEDCL has placed any time any order/s with you previously for the equipment which you have tendered the quotations? If yes, give the details.

9. Whether you/your principals are having proper equipments for manufacturing the items for which the quotations have been tendered. Please give the full details of the manufacturing plant and machinery (this information is to be furnished if no order has been placed on the supplier up till now for this tendered item).

10. Whether you/your principals are having equipments for carrying out test as per requirement of relevant specification. Please submit details of the testing equipments.

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Seal & signature of the supplier

List of Suppliers for Supply of CTs & PTs

M/s Crompton Greaves Ltd.Western Region, Kanjurmarg (E),Mumbai-400042.

M/s. Madhav Electrical Ind. Pvt. Ltd.F-4, Jawaharlal Nehru Industrial Estate,Pirangut, Tal. Mulshi,Dist. Pune – 412111.

M/s. Gyaro Laboratories Pvt. Ltd.8, Gazdar Street, Chitra Bazar,P.O.Box No. 2481,Mumbai-400002,Fax: 91-22-56340087

M/s. Techno Associates Vidyut Pvt. Ltd.,W-160 MIDC, Phase II,Dombivli (E).Dist – Thane.Fax: 0251-287187.

M/s. Industrial Components Corporation.105, Champaklal Industrial Estate,Unit No. 13, Sion.Mumbai-400022.Fax: 24091004.

M/s. Transdelta Electricals.B 8-9, MIDC Area Chikhalthana,Aurangabad 431210.Fax: 0240-482643.

M/s. Industrial Electrical Mfg. Co. Pvt. Ltd.,Vimal Villa, Flat No. 2, Plot No. 5486, Dr. Ambedkar Road.Mumbai-400019

M/s. Universal Magnoflux (P) Ltd.24, Palasia Road,Indore – 452008.

M/s. Skipper Engineers,W-49, Phase III, MIDC, Akola – 444104.

M/s. Elcont Electrical Equipment Pvt. Ltd.Trimurti, 05, S. Bapat Marg, Dadar. Mumbai – 400028.

M/s. Transfield Electric,Rajashri Industrial Complex,17, Bldg. No. 2, Behind Lawkim Ltd.,Ghodbunder Road, Thane (W) – 400607.Fax: 25361932.

M/s. Atlanta Electricals. Vimal Villa, Flat No. 2,Plot No. 548-C,Dr. Ambedkar Road.Matunga.

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MAHARASHTRA STATE ELECTRICITY DIST. CO. LTD., O&M CIRCLE, VASAI

SCHEDULE ‘A’ ( Rate and delivery sheet)TENDER NO. 18/2007-2008

Sr.No.

Description of material withSpecification.

QuantityRequired

Ex. works priceRs. per unit

Freight, Insurance, packaging & forwardingcharges Rs./unit

F.O.R. Destination priceRs./unit

RequiredDelivery Period.

Delivery Period offered.

1 2 3 4 5 6 7 8

1 Supply of 22 KV / 110V Out Door, Oil Filled Dead Tank type Potential Transformer as per IS : 3156

- - Palghar 30 Days

Manufacturers packaging slip or any other proof should be submitted with the delivery challan and bill.

1) Excise Duty2) VAT

Seal & Signature of Supplier.

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