BECILTECHNICAL SPECIFICATIONS OF H.T. SWITCH BOARD FOR100 KW SW TRANSMITTER AT KABUL (AFGHANISTAN)

GENERAL: These specifications cover the technical requirements for supply transportation and calibration at site of High Tension (Vacuum/SF6) Switch Board for the 100 KW SW Transmitter installation of RTA at Kabul (Afghanistan). The tenderer shall carefully study the general conditions and the technical specifications and submit the quotations for the schedule of requirements indicated in Section IV. The tender must submit clause by clause compliance of these specifications.N.B.:-Tenders without clause by clause compliance to all sections shall be rejected out rightly.

SUMMARY OF CONENTS:-

SECTION I:General conditions

(Page No. 2-4)

SECTION - II :Technical specifications

(Page No. 5-7)

SECTION III:Technical Information to be

Furnished by the tenderer

(Page No. 8-10)

SECTION IV:Schedule of requirements

(Page No. 11-12)

SECTION - V:Commercial Terms & Conditions

(Page No. 13-14)

Harkesh Gupta

Director (O&M)TECHNICAL SPECIFICATION OF H.T. SWITCH BOARD FOR 100 KW SW TRANSMITTER AT KABUL (AFGHANISTAN)SECTION I

GENERAL:1.0SCOPE:

This section covers the general conditions governing the design, manufacture, factory testing, packing, transportation to site, installation, testing and commissioning of four panel, H.T. Switch Board equipment at project site in Kabul, Afghanistan. 2.0 LOCATION:

The equipment shall be installed inside the building of 100 KW SW transmitter at Kabul (Afghanistan).

3.0 GENERAL CONDITIONS:

3.1 The equipment offered shall conform to the Technical Specifications in section II. Should a tenderer desire to depart in any respect from the given specifications either on account of manufacturing practice or for any other reason, he must specifically bring out the deviations in a covering letter explaining in detail, each and every departure he proposes to make. Unless otherwise stated, the equipment offered shall be deemed to completely satisfy these specifications.

3.2 The equipment shall be designed for efficient and trouble free service for long periods of continuous operations. All materials used in the construction shall be of high quality and conform to the relevant IS specifications.

3.3 All electrical work shall be carried out in accordance with standard electrical practice. The units shall be designed for easy maintenance and complete safety to operating personnel.

3.4 Only easily available standard components shall be used as far as possible. Tenderer shall undertake to make available spares and replacement parts as and when required for a period of ten years.

4.0 COMPLTENESS OF CONTRACT:

All fittings and accessories which may not have been specifically mentioned or which the tenderer may not explicitly mention in his tender but all the same are necessary for the operation of the equipment shall be deemed to be included in the tender and shall be provided by the tenderer, without any extra charges. Adequate quantity of installation materials such as nuts, bolts, lugs etc., shall also be included.

5.0 DOCUMENTATION (ALONGWITH TENDER)The tenderer shall submit the following documents in duplicate along with the tender. 5.1 Leaflets with illustrations relevant to the components offered.

5.2 Complete schedule of materials of each unit.

5.3 Exact dimensional details of the equipment offered and mounting arrangements. The details shall be complete and accurate enough for the buyer to proceed with the building works for accommodating the equipment.

5.4 Wiring diagram of the electrical circuits. 6.0 DOCUMENTATION (AFTER ACCEPTANCE OF TENDER)

6.1 Four copies of the drawings showing the dimensions, location of components and accessories in the H.T. Board shall be sent to indentor within two weeks of acceptance of the tender for approval. Two sets will be returned after approval.

6.2 Following documents shall be supplied to the consignee along with each H.T. Switch Board at the time of delivery.

6.2.1 Two copies of the book of instructions for the installation, operation and maintenance of H.T. Switch Board.

6.2.2 Factory test certificates as per IS (amended upto date) showing the result of tests actually conducted on the circuit breakers (SF6/Vacuum).

6.2.3 Two sets of finalised drawings showing detailed dimensions including fixtures on the Switch Board.7.0 DELIVERYDelivery at site, installation, testing commissioning and calibration of the entire equipment ordered shall be completed within four months. This period shall be effective from the date of acceptance of the tender and shall be independent of any other factors.

8.0 PACKING:The packing shall be suitable to withstand transportation hazards. Each package shall contain a packing slip giving the details of the contents and bear the address of consignee. A copy of the packing slip giving list of items included in the package together with the package number shall be mailed in advance. If the component parts of the assembly are dismantled to facilitate dispatch, each component shall be marked for easy identification and re-assembly.

9.0 GUARANTEE:The entire switch board and accessories shall be guaranteed for satisfactory operation for a period of 24 months from the date of delivery or 18 months from the date of commissioning at site whichever is earlier. During guarantee period, all equipment and parts, failing due to faulty material or manufacture shall be replaced free of charge. The defective unit shall not be sent back to the suppliers but shall be available for inspection by the supplier or his representative at site for replacement etc.

The tenderer shall guarantee the performance figures in respect of each equipment.

10.0 ERECTION :10.1 Erection and commissioning of the equipment supplied shall be carried out by the contractor . Instructions and drawings necessary for installation shall also be supplied by the successful tenderer to BECIL. Tenderer shall quote rate for SITC at site. The offer shall include all tests to be carried out at site (in the presence of BECIL representative) as per mutually agreed Acceptance Test Procedure.

11.0 INSPECTION:The successful tenderer will have to get the HT switch board inspected by a person authorised by BECIL in his workshop/factory before dispatch. Tenderer shall send all the test certificates as per IS, before giving call for inspection to BECIL well in advance. All the test facilities for the inspection shall be provided by the tenderer. SECTION II

TECHNICAL SPECIFICATION

1.0 GENERAL

1.1 The 4 panel H.T. Switch Board shall be constructed as per schematic drawing no. BECIL/MEA/SHORTWAVE/PS-001. The schematic and specifications detailed below are indicative of the requirements of BECIL and are meant to help the tenderers to quote for their standard equipment which would meet these specifications.

1.2 The equipment shall operate satisfactorily under the following conditions:

i) 20% voltage variation from specified voltage.

ii) 10% variation in voltage between phases on full load.

iii) 4% variation in frequency from the specified value of 50 Hz.

iv) Environmental conditions of

Ambient Temperature = -20 to 40C

Relative Humidity = up to 95%

Altitude = 1800 meters.

2.0 H.T. SWITCH BOARD CONSTRUCTIONThe H.T. Switch Board shall be totally enclosed type, suitable for floor mounting, indoors. The enclosure shall be constructed out of best quality sheet metal and painted Siemens grey. The enclosure shall provide adequate protection against ingress of dust and vermin. The degree of protection offered shall be as per IP-5 of IS-2141 1962 or equivalent International standards, amended to date.

The switch board shall be complete with circuit breakers along with other accessories as indicated in Drg. No. BECIL/MEA/SHORTWAVE/PS-001 and shall be designed for operation at 15 K.V, 50Hz supply and shall have a repturing capacity of 250 MVA.

3.0 CIRCUIT BREAKERSThe Circuit Breakers (Vacuum/SF6) of the H.T. Switch Board shall conform in all respects to

IS:13118-1991/relevant IS, amended up to date.3.1 PARTICULARS OF THE SYSTEM.

Number of panels:4 (Two incoming, Two out going)

Nominal operating voltage:15 KV

Frequency:50Hz

No. of phases:3

No. of Wires:3

Neutral Earthing:At the sub station of Electricity Department.

3.2 TYPE OF SWITCH GEAR:

:Indoor, Floor Mounting type.

3.3RATING OF CIRCUIT BREAKERS:No. of poles

:3

Service Voltage

:15 KV

Rated Current

:400 A

Frequency

:50 Hz

Making capacity

:35 KA

Symmetrical Breaking capacity

:250 MVA

3.4 OPERATING MECHANISM OF CIRCUIT BREAKER AND ASSOCIATED EQUIPMENT:

Type

Trip-Free

Method of operation (Closing)

Manual

Method of operation (Opening)

Shunt Release.

Voltage for tripping

24V/30V D.C.

Other Releases

For Protection as detailed in para 4.4.0PROTECTIVE DEVICESEach circuit breaker shall be provided with the following protective release:

i) Inverse Definite Minimum Time Lag Over-Current (IDMT) releases for protection against overloads. The over current releases shall be of the indirect release type, energized through current transformers of suitable ratio. They shall have provision for adjusting the setting from 50% to 200% of normal working current.

ii) Earth fault release energized through current transformer for tripping the circuit breaker on earth faults. The release shall be adjustable from 10% to 40% of the normal working current. 5.0METERING

Each of incoming H.T Vacuum/SF6 Circuit Breaker panels shall be provided with the following metering facilities.

A voltmeter 0-20 KV range for indicating phase to phase voltage of the incoming supply, complete with its selector switch. The voltmeter is to be fed from a three phase, draw out type potential transformer of class B accuracy, complete with limiting resistances and fuses etc. Potential transformer shall meet the requirement as per IS; 3156, as amended to date.

Each vacuum/SF6 circuit breaker shall have one Ammeter with four position selector Switch to indicate the current in each of the three phases with suitable current transformers, conforming to IS-2705 1965, amended to date and ofClass I accuracy. The meters shall conform to IS-1248-1958, amended to date and shall be of accuracy not less than Grade A.

6.0BUS BARSThe bus bars shall be single; air insulated type of HDBC Electrolytic copper, rated for 400 Amps; corrected for local operating temperature conditions and shall be so mounted as to withstand worst fault conditions. The marking arrangement of Bus Bars shall be as per IS:375, amended to date.7.0CABLE BOXESStraight entry type cable end boxes complete with cable glands and armour clamps shall be provided on both the incoming and outgoing panels of the switch board. The cable boxes of circuit breakers shall be suitable for 15 KV, 3 core, underground, Aluminum Conductor cable of size 50 mm2.

8.0INDICATING LAMPSColoured indicating lamps (Flush Type) shall be provided on front side of the H.T. Panel through suitable potential transformers and fuses to indicate the live phases as indicated in Drg No. BECIL/MEA/SHORTWAVE/PS-001.

9.0TRIPPING UNITA self contained tripping battery unit with trickle charger for providing the D.C source for tripping of CBs shall be provided. The battery unit shall be complete with its own trickle charger, suitable for working on 230Volt, 50 Hz, single phase supply. The unit shall be provided with necessary switches, fuses and meters to indicate the voltage, and charging current of the battery. The unit shall be mounted in a steel cabinet with adequate protection against spilling of acid and with proper ventilation arrangement to ensure freedom from acid fumes corroding the area.

SECTION III

INFORMATION TO BE SUPPLIED BY TENDERER IN DUPLICATE

1.0H.T. SWITCH BOARD

1.1Overall and detailed dimensions of the complete switchboard and Individual panels.

1.11Width mm

1.12Depth mm

1.13Height mm

1.2Weight of each panel

1.2.1Net . Kg.

1.2.2Gross ... Kg.

1.3Minimum clearance required from the walls

1.3.1Front mm

1.3.2Side mm

1.3.3Back mm

1.4Minimum clearance required in front of the switchboard for drawing out of the circuit breaker

1.4.1Normal Operation . mm

1.4.2Maintenance and Servicing.. mm

1.5Foundation bolts required, if any with sizes, and layout drawing.

1.6Size of M.S. Sheet used for the Board.. SWG

.. mm

2.0CIRCUIT BREAKERS

2.1RATING:

2.1.1Number of poles...

2.1.2Rated Voltage..KV

2.1.3Rated Normal Current..Amp.

2.1.4Rated Frequency. Hz

2.1.5Rated Insulation Level..KV

2.1.6Rated SC Making current in KA..

2.1.7Rated SC Breaking Current in KA..

2.1.8Rated duration of Short Circuit Current..Seconds

2.1.9Total Break Time..

2.1.10Type, Whether Indoor or Outdoor..

2.2Certificate or Report of Short Circuit Type Test

2.3CONSTRUCTIONAL FEATURES:

2.3.1Number of Break Contacts per pole.

2.3.2Type of main contacts.

2.3.3Type of arcing contacts and/or arc control devices

2.3.4Number of tanks

2.3.5Steady Hydraulic test pressure that the tanks can withstand for one Minute without permanent deformation

2.3.6METHOD OF CLOSING

2.3.6.1Whether by hand or power..

2.3.6.2Whether the circuit breaker is trip-free..

2.3.6.3Normal voltage of shunt trip coil (s)..

2.3.6.4Power Required at normal voltage for shunt trip coil..

2.3.6.5Weight of Circuit breaker complete with arc extinguishing medium and mechanism...

2.3.6.6Kind and quantity of arc extinguishing medium in the complete circuit breaker.

3.0PROTECTIVE DEVICES AND METERS:

3.1Details of over current releases, their time characteristics and range of setting.

..

..

3.2Details of earth leakage release and range of setting.

...

3.3Ratings, class and accuracy of voltage transformers

3.4Range, class and accuracy of Ammeter

3.5Range, class and accuracy of Ammeter

3.6Ratings, class and accuracy of current transformer.

4.0BUS BARS AND CABLE BOXES

4.1Details of the bus-bars and bus-bar chambers and methods of extension

4.2Dimensions and arrangements of the incoming and outgoing cable boxes.

.

5.0AUXILLARY TRIPPING SUPPLY UNIT WITH TRICKLE CHARGER

5.1Tripping Coil voltage

5.2Tripping Coil Ampere

5.3Type of characteristic of tripping coil

5.4Type & no. of batteries

5.5Mechanical dimensions of the unit

SECTION IV

SCHEDULE OF REQUIREMENTSSl.No.DESCRIPTIONQTY.REMARKS

1.Indoor, totally enclosed, floor mounted, 15 KV, 3 Phase, 50 Hz, 250 MVA, 4 panel HT Switch board consisting of Vacuum/SF6 circuit breakers comprising of the following items:-1 Seti)

ii)

iii)The Switch board should be capable of future extensions if necessary at a later stage

Please refer HT switch schematic board Drg. No. BECIL/MEA/ Shortwave/PS-001

Environmental conditions

a) Ambient Temp. - 20 to 40C

b) R-H upto 95%

c) Altitude 1800 M

1.1Incoming Vacuum/SF6 Circuit Breakers including all the protective devices, measuring meters, installation materials and all other accessories conforming to technical specifications in Section II.2 Nos.

1.2Outgoing Vacuum/SF6 Circuit Breakers with protective devices measuring meters, installation materials and all other accessories conforming to technical specifications in section II.2 Nos.

1.3Tripping battery system complete with trickle charger operating from 230 Volts mains for use with the tripping circuit of above switchboard.1 SetThe Batteries shall be maintenance free and suitable for the ambient conditions specified above.

1.4Details of Metering and C.T. Ratio etc.

Parameters/Scale Panel Nos.

I II III IV

i) CT Ratio 25/5 25/5 25/5 25/5

ii) Ammeter Scale (Amp) 50 50 50 50

iii) Voltmeter Scale (KV) 20 20 20 20

iv) Cable size in sq.mm 50 50 50 50

v) INDICATORS: All incoming circuit breakers should have R, Y, B, Neon indicator lamps for phase identification.

1 Set

NOTE: On all the panels the O/L (over load) setting will be 50% to 200% of full load on over current and 10% to 40% of normal working current for earth fault.

2.Any other accessories offered for the completeness of the system (Items wise details of offered and included material, items & part no. are to be given by the tenderer) 1 Lot

3.Testing and calibration of HT Switch board as per clause 10.1 of Section-I of specification including inspection certification in Afghanistan. 1 Job

OPTIONAL ITEMS/WORKS

1.Spares:- The list of recommended spares as deemed fit by the original equipment manufacturer or the tenderer for the completeness of the system (Item wise details of offered material, items & part are to be given by the tenderer1 Lot.

SECTION VCOMMERCIAL TERMS & CONDITIONS1.Description of Stores and Quantity:As per Technical specification & schedule of requirements (Sec. II & IV)

2.Completion period for SITC:6 Months from placement of order.

3.Bid Bond (Bank Guarantee) Earnest Money:Indian Bidder Rs. 20,000/-

4.Bid Bond/Bid Validity:(i) 60 days beyond bid validity.

(ii) 120 days from the date of opening of Technical Bid.

5.Consignee:Project Manager (BECIL), C/o General Director, Radio & Television of Afghanistan (RTA), Kabul.

6.Warranty:Required as per clause 9 of section I.

(i) Performance Bank Guarantee/Security Deposit:10% of the order value.

(ii) Validity:60 days from the date of expiry of Warranty/Guarantee.

7 a.Payment Terms:i) 80% against delivery of items at site.

ii) 10% after installation.

iii) 10% after calibration, testing and commissioning of H.T. Switch Board.

b.Bidding System:Two Bid Systems shall be followed for this tender. Tenderers should take due care to submit tenders in accordance with requirement in sealed covers as specified in clause 2 of Instruction to Bidders (Annexure-I) Bid evaluation criteria at Annexure III shall be the basis for evaluation of tenders. The technical & commercial bid should be submitted in separate Sealed cover.

c.Payment Authority:Payment shall be made by CMD, Broadcast Engineering Consultants India Limited (BECIL), Noida (Office at B-1, Sector-31, Noida 201 301 at New Delhi/Noida 201 301).

8.Delivery of Tender:The tender will be on the basis of Two bids system and offers are to be submitted in duplicate sealed covers. The first inner sealed cover will contain Technical Bids and having all details including the list of equipment to be supplied but with price column blanked out. There will be no mention of the prices anywhere in the Technical Bid. Earnest money/Bid Bond will also be sent in above first inner cover. This cover will be subscribed with Technical Bid alongwith tender number and items description.

The second sealed inner cover will contain the price schedule duly filled in and signed and contain all the commercial details of the bid and will be superscribed with Commercial Bid alongwith tender number. These two covers shall be put into an outer cover and sealed. The outer cover should duly bear the tender number and date of closing/opening prominently underlined alongwith the address of this office.

9.Price:The price quoted must be net per unit and must include packing and delivery charges upto the port of embarkation.

10.Earnest Money/Bid Bond.:The bidders must enclose with their technical bid; Earnest Money in the form of Bank guarantee/Demand Draft in favour of Broadcast Engineering Consultants India Limited, New Delhi.

The Earnest Money/Bid Bond deposited by the tenderer shall be forfeited by this organization in the following events:

(a) If tender is withdrawn during the validity period or any extension thereof.

(b) If tender is varied or modified in a manner not acceptable to this organization during the validity period or any extension of the validity duly agreed by the bidder.

If a tenderer, whose tender has been accepted, fails to furnish Security deposit/performance bank guarantee within 30 (Thirty) days before the expiry of bank guarantee/bid bond for E.M.D.

The earnest money/bid bond of unsuccessful bidders will be returned on finalization of the tender. The earnest money/Bid Bond of successful bidder will be returned on receipt of security deposit/performance bond.

11.Security deposit/Performance Bond:The successful bidder, within 30 (Thirty) days of the receipt of order/advance order/letter of intent, will be required to send security deposit in the form of crossed bank draft in favour of Broadcast Engineering Consultants India Limited, New Delhi or in lieu thereof Performance Bond for the amount as indicated in the Invitation to Bid.

12.Penalty for Delay:In case of late delivery of equipment and/or completion of related installation/calibration, testing and commissioning of H.T. Switch Board at site, tenderer will be liable to pay a penalty @0.25% of the order value per week of delay or part thereof, up to a maximum amount of 1.5% of the order value, after which the order is liable to be cancelled.

13.Additional Charges:In case of any additional charges over and above the cost like Sales Tax, Excise Duty, Octroi etc., the same may be indicated separately.

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