11kv xlpe cable

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UGVCL-Specifications 11 kV XLPE Power Cable

Seal & Signature of bidder

2.0: 11 KV XLPE POWER CABLE





SPECIAL INSTRUCTIONS TO BIDDER

Please read following instructions carefully before submitting your bid.

1. All the drawings, i.e. elevation, side view, plan, cross sectional view etc., in

AutoCAD format and manuals in PDF format, for offered item shall be submitted.

Also the hard copies as per specification shall be submitted.

2. The bidder shall submit Quality Assurance Plan for manufacturing process and Field

Quality Plan with the technical bid.

3. The bidder shall have to submit all the required type test reports for the offered

item. However, in the event of partial submission or reports older than specified

limit, bidder must submit his confirmation for those type test report/s to be

submitted in the event of an order, without affecting delivery schedule, beforecommencement of supply, free of cost. In absence of this confirmation, the

evaluation shall be carried out accordingly as non submission of type test reports.

4. The bidder must fill up all the point of GTP for offered item/s. Instead of indicating

“refer drawing, or as per IS/IEC”, the exact value/s must be filled in.

5. All the points other than GTP, which are asked to confirm in technical specifications

must be submitted separately with the bid.

6. The bidder is required to impart training in view of manufacture, assembly,

erection, operation and maintenance for offered item, at his works, to the person/sidentified by UGVCL, in the event of an order, free of cost. The cost of logistics will

be bear by UGVCL.

7. Please note that the evaluation will be carried out on the strength of content of bid

only. No further correspondence will be made.

8. The bidder shall bring out all the technical deviation/s only at the specified

annexure.

9. The bidder should indicate manufacturing capacity by submitting latest updated

certificate of a Chartered Engineer (CE).





QUALIFYING REQUIREMENT DATA

(For Supply)

Bidder to satisfy all the following requirements.

1) The bidder shall be Original Equipment Manufacturer (OEM). The offered

equipment have to be designed, manufactured and tested as per relevant

IS/IEC with latest amendments.

2) The minimum requirement of manufacturing capacity of offered type, size

and rating of equipment shall be 7 times tender / bid quantity. The bidder

should indicate manufacturing capacity by submitting latest updated

certificate of a Chartered Engineer (CE).

3) Equipment proposed shall be of similar or higher rating and in service for a

minimum period of THREE (3) years and satisfactory performance certificatein respect of this is to be available and submitted.

4) The bidder should clearly indicate the quantity and Single Value Contract

executed during last FIVE (5) years, for the offered equipment. Bidder

should have executed one single contract during last five years for the

quantity equivalent to tender / bid.

The details are to be submitted in following format,

Sr.

No

ITEMS

SUPPLIED

TO

ORDER

REFERENCE

No. & DATE

ITEMS QUANTITY ORDER

FULLY

EXECUTED.YES/NO

STATUS, IF

ORDER

UNDEREXECUTION

REMARK

5) Equipment offered shall have Type Test Certificates from accredited

laboratory (accredited based on ISO/IEC Guide 25 / 17025 or EN 45001 by

the National accredition body of the country where laboratory is located), as

per IEC / IS / technical specification, valid for a period of FIVE years from the

date of opening of technical bid.





TECHNICAL SPECIFICATION FOR

11 kV XLPE POWER CABLE

(CROSS LINKED POLYTHELENE DRY GAS CURED)

SECTION – I

1.1 SCOPE:

1.1.1 This Section of the Specification covers design, manufacturing, testing, packing,

supply & delivery of 11 kV XLPE Dry gas cured insulated power cable for effectively

earthed specification system.

1.2 STANDARDS:

1.2.1 Unless otherwise specified, the cable shall conform in all respect to IS: 7098

(Part-II)-1985 with latest amendment thereof.

1.3 CLIMATIC CONDITIONS:

1.3.1 The climatic conditions under which are cables shall operate satisfactorily are as

follows:

(a) Maximum ambient temperature of air0C : 50

(b) Minimum ambient temperature of air in shade0C : 4

(c) Maximum daily average ambient temperature0C : 40

(d) Maximum yearly average ambient temperature0C : 30

(e) Maximum relative humidity % : 95

(f) Average number of thunder storm days per annum : 15

(g) Average annual rainfall cm : 150

(h) Maximum wind pressure Kg/cm2

: 150

(i) Altitudes not exceeding above MSL mtrs. : 1000

(j) Maximum soil temperature at cable depth0C : 30

(k) Maximum soil thermal resistively0C cm/watt : 150





1.4 PRINCIPAL PARAMETERS:

1.4.1 11 kV (E) Grade XLPE, 3-Core, power cable shall be of high conductivity, stranded

compacted, H.D. aluminum circular shaped conductor with XLPE (cross linked Poly

Ethylene) Dry/Gas cured insulation provided with shielding of extruded semi-

conducting materials over conductor and XLPE insulation. Each insulated core shall

have copper tape screen, laid together and provided with common covering of PVC

Inner Sheath (Extruded). Overall galvanized steel strip armour and PVC outer sheath

shall be provided. The specification for manufacture of cable shall be conforming to

IS: 7098 (Part-II) 1985 (latest edition) for 11KV (E), 3-phase, 50 Hz. Earthed systems.

1.4.2 Outer sheath shall be designed to afford high degree of mechanical protection and

shall also be heat, oil, chemical and weather resistant, Common acid, alkalis and

sealing solution shall not have adverse effect on material of PVC sheath.

1.4.3 Cable shall be suitable for laying in covered trenches and / or buried under-ground

in outdoor.

1.4.4 Cable Parameters :

11 kV

(i) Voltage grade (Uo / U) kV : 6.35 / 11

(ii) Cores (Nos) : 3

(iii) Nominal system voltage kV : 11

(iv) Highest system voltage kV : 12

(v) System frequency Hz : 50

(vi) Variation in frequency % : 3

(vii) (a) Maximum allowable temp. of

conductor during continuous

normal operation at rated

full load current.0C

(b) Maximum allowable temp.

under short circuit condition0C

:

:

90

250

(viii) 1.2/50 microsecond lightning

impulse withstand voltage wave

value. kVp

: 75

(ix) 5 Min, Power frequency

withstand voltage kV rms

: 17

(x) System earthling : Effectively earthed.





1.5 GENERAL TECHNICAL REQUIREMENTS:

1.5.1 Conductor:

The cable conductor shall be made from high conductivity stranded High

Density aluminum to form compacted circular shaped conductor having

resistance within limits specified in IS: 8130/1984 and any latestamendment to it.

1.5.2 Conductor shield:

The conductor having semi-conducting screen shall ensure perfectly smooth

profile & avoid concentration of stress. The conductor screen shall be

extruded in the same operation as the insulation. The semi-conducting

polymer shall be cross linked.

1.5.3 Insulation:

The XLPE insulation shall be suitable for 11 kV system voltage and should bemanufactured with Dry / Gas curing process. The bidder shall submit the

description of dry / gas curing process, with the clear inclusion of

equipments / parameters involved. The manufacturing process shall ensure

that the insulation shall be free of voids. The insulation shall withstand

mechanical and thermal stress under steady state and transient operating

conditions. The extrusion method should give very smooth interface

between semi-conducting screen and insulation. The insulation of the cable

shall be of high standard quality generally conforming to IS: 7098 (Part – II) –

1985 and any latest amendment to it.

1.5.4 Insulation shield:

Non-metallic semi-conducting shield shall be provided over the insulation to

confine electrical field to the insulation. The insulation shield shall be

extruded in the same operation as the conductor shield and the insulation

by suitable extrusion process. The XLPE insulation shield shall be of tended

type. The copper metallic overlapped tape shield shall be provided.

1.5.5. Filler and Inner-Sheath:

The sheath shall be suitable to withstand the site conditions and the desiredtemperature. It shall be of adequate thickness, consistent quality and free

from all defects. The PVC sheath shall be extruded. The material of fillers

and inner-sheath shall be compatible with the temperature ratings of the

cable and shall have no deterious effect on any other component of the

cable. Central PVC filler shall also, be provided with other peripheral PVC

fillers to have proper circular section.





1.5.6 Armour:

Armouring of galvanized steel strip shall be provided. The dimensions of

steel strips shall be as per latest edition of IS: 3975 – 1979.

1.5.7 Outer-Sheath:

Extruded type ST-2 PVC outer-sheath, conforming to IS: 5831-(1984) (latest

edition) over armouring with suitable additives (to prevent attack by

redents & termites), shall be provided.

1.5.8 Construction:

1.5.8.1 The cable shall have suitable PVC fillers laid up with insulation cores to have

subsequently circular cross-section before the inner sheath is applied. The

fillers shall be suitable for operating temperature of the cable.

1.5.8.2 All materials used in manufacturing of cable shall be new, unused and of

finest quality. All materials should comply with the requirements / tests as

per applicable IS / IEC specification, Indian Electricity Rules and any other

statutory provision of rules & regulations.

1.5.8.3 The PVC material used in the manufacture of cable shall be of reputed

manufacturer. No recycling of PVC is permitted. The purchaser reserves the

right to ask for documentary evidence of the purchase of various materials,(to be used for the manufacture of cable) as per checking of quality control.

Quality Assurance plans shall be submitted.

1.5.9 Current Rating:

The indicative value of continuous current carrying capacities at Maximum

conductor temperature of 900

C (for design purpose by field) of the various

sizes of the cables are given below:

Sr.No.

Size of 3 CoreCable (Sq.mm)

Continuous Current Carrying

Capacity in Amp(For 11 kV cable)

In Ground In air

1 50 130 140

2 95 185 200

3 150 235 265





Sr.

No.

Size of 3 Core

Cable (Sq.mm)

Continuous Current Carrying

Capacity in Amp

(For 11 kV cable)

In Ground In air

4 185 270 310

5 240 305 345

6 300 340 396

1.5.9.1 Short circuit ratings of various sizes of 3 core cable calculated for duration of

one second at maximum temperature of 2500

C, are given below:

Sr.

No.Size of 3 Core Cable (Sq.mm)

Conductor short circuit

rating in kA (rms)

(For 11 kV cable)

1 50 4.70

2 95 8.93

3 150 14.1

4 185 17.4

5 240 22.6

6 300 28.2

1.5.9.2 The current rating shall be based on maximum conductor temperature of

900

with ambient site condition specified for continuous operation at the

rated current.

1.5.10 Operation :

1.5.10.1 Cable shall be suitable for operation under frequency variation of +3% and

voltage variation of +10% to -15% and combined frequency - voltage

variation of 10% (absolute sum).

1.5.10.2 Cable shall be suitable for laying in duct or buried underground.

1.5.10.3 Cable shall have heat & moisture resistance properties. These shall be of

type & design with proven record on distribution network service.

1.5.10.4 Length :

The cable shall be supplied in standard drum length of 300 mtrs. 5%

tolerance for all the sizes of cable except for 3 C x 240 mm2

and 3 C x 300

mm2

size cable. The drum length for 3 C x 240 mm2

and 3C x 300 mm2

cable

shall be 200 mtrs. 5%.

Over all tolerance in total quantity of ordered cables shall be + 2%.





1.5.10.5 Identification Mark :

(i) The cable drum shall be printed with information as per cl. 21;2 of IS

and ISI Certification mark. Bidder shall submit xerox copy of valid ISI

Licenses with technical bid.

(ii) For identification of cores, coloured strip of Red, Yellow and Bluecolours shall be used for identification of phases. Following details of

identification shall be embossed at intervals of length of one meter

of cable outer sheath.

(iii) (a) Name of manufacturer (b) year of manufacture (c) voltage grade

(d) Name of purchaser “UGVCL”.

1.6 TESTS:

1.6.1(A) Type Tests:

All the cable sizes i.e. items offered should have been fully type tested asper the relevant standards at any Govt. recognized Laboratory. The bidder

shall furnish three sets of type test reports along with the offer. The Type

test reports shall not be older than FIVE years and shall be valid upto the

expiry of validity of offer.

For any change in design/type, already type tested and the design / type

offered against this specification, the purchaser reserves the right to

demand reputation of type tests without any extra cost.

The purchaser also reserves the right to have tests carried out at his own

cost by an independent agency, whenever there is a dispute regarding the

quality of supply.

1.6.1(B) The following type test reports shall be furnished with the offer:

(a) Tests on conductor :

(i) Tensile test

(ii) Resistance test

(b) Tests for armouring strips / wires. :

(c) Tests for thickness of insulation and sheath. :

(d) Physical tests for insulation. :

(i) Tensile strength and elongation at break.

(ii) Ageing in air oven

(iii) Hot set

(iv) Shrinkage test

(v) Water absorption





(e) Physical tests on outer seath :

(i) Tensile strength and elongation at break.

(ii) Ageing in air oven

(iii) Shrinkage test

(iv) Hot deformation

(v) Bleeding and blooming test

(f) Partial discharge test

(g) Bending test

(h) Dielectric power factor test

i) as a function of voltage

ii) as a function of temperature

(i) Insulation resistance test (volume resistivity)

(j) Heating cycle test

(k) Impulse withstand test

(l) High voltage test

(m) Flammability test

1.6.2 Acceptance Test:

1.6.2.1 The selection of sample pieces for acceptance test shall be from 10% drumsof each lot offered for inspection or part thereof. The minimum shall be one

drum.

1.6.2.2 The following acceptance tests shall be carried cut on the selected samples

as per IS: 7098 (Part-II) – 1985.

(a) Annealing test (for copper)

(b) Tensile test (for aluminum)

(c) Wrapping test (for aluminum)

(d) Conductor resistance test.

(e) Test for thickness of insulation and sheath

(f) Hot set test for insulation

(g) Tensile strength and elongation at break test for insulation and

sheath.

(h) Partial discharge test (for screened cables only)





(i) High voltage test for 4 hours (as per cl. No. 19.7.1)

(j) Insulation resistance (volume resistivity) test.

1.6.2.3 All the acceptance tests shall be carried out by the firm, in the presence of

purchaser’s representative at their works. The firm shall give atleast 15

days’ advance notice to the purchaser to enable him to depute the engineer

for witnessing the tests. The test certificates for acceptance tests witnessed

by inspecting officer/ engineer shall be submitted for approval before

dispatch of material.

1.6.3 Tests:

1.6.3.1 The bidder shall have to submit, well in advance, the test certificates for the

following routine test for approval prior to inspection of the materials for

the complete lot offered for inspection at a time.

(a) Conductor resistance test

(b) Partial discharge test

(c) High-voltage test for 5 minutes [as per Clause 19.7.2 of IS: 7098

(Part-II) – 1985].

1.7 STAGE INSPECTION:

1.7.1 The inspection may be carried out by the purchaser at any stage of

manufacture. The successful bidder shall grant free access to the

purchaser’s representative at reasonable time, when the work is in

progress. Inspection and acceptance, of any cables under this specification

by the purchaser, shall not relieve the supplier of his obligation of supplying

cable in accordance with the specification and shall not prevent subsequent

rejection, if the cables are found defective.

1.7.2 The supplier shall keep the purchaser informed in advance about the

program of manufacturing of cables so that arrangement can be made for

inspection.

1.7.3 The purchaser reserves the right to insist for witnessing the acceptance /

routing tests of the bought out items.

1.8 DOCUMENTATION:

1.8.1 The bidder shall furnish following documents along with his offer.

1.8.1.1 Sectional view, showing the General constructional feature with conductor /

conductor screen / insulation / armouring / inner and outer sheath etc.

1.8.1.2 Drawing of cable drums with details of material dimension and paint etc

shall be submitted





1.8.1.3 All the required type test reports for offered items tested at any

Government recognized Laboratory as stated under Clause No. 1.6.1 (B).

1.8.1.4 Literature, pamphlets for the record items.

1.8.1.5 List of orders (size wise) executed during last five years for supply of

specified sizes of XLPE cables, supplied to State Electricity Boards, Privatefirms & UGVCL & other Discoms etc. Along with quantity, value of the

orders, year of supply and delivery schedule. List of orders executed and

under execution shall be submitted separately. The annual turn over in

rupees, of the firms to whom the cables have been supplied during last two

years shall be stated.

1.9 PACKING AND FORWARDING:

1.9.1 The cable shall be wound on wooden drums as per IS: 10418 – 1972 and

packed in drums suitable for vertical / horizontal transport, as the case may

be and shall be suitable to withstand rough handling during transport and

outer storage. The outer surface of the drum shall be painted with white

aluminum pint. Similarly, the inside surface of drum shall have the

protective layer of varnish / paint to protect it from white ants.

1.9.2 The wooden drums shall be reinforced with steel bends and strips for better

protection.

1.9.3 The ends of the cable shall be sealed by means of non-hygroscopic sealing

materials.

1.9.4 The following information may be stenciled on the drum with either water

proof ink or oil paint:

i. Reference of IS / IEC standard.

ii. Manufacturer’s name or trademark.

iii. Type of cable and voltage grade.

iv. No. of cores.

v. Nominal cross-sectional area of conductor.

vi. Cable code.

vii. Length of cable on the drum

viii. No. of lengths on the drum (if more than one)

ix. Direction of rotation of drum (by means of an arrow)

x. Position of outer end of cable

xi. Gross weight

xii. Country of manufacture





xiii. Year of manufacture

xiv. Reference of A/T No. & date

xv. Property of UGVCL

xvi. Name of consignee and the destination.

The drum may also be marked with ISI Certification Mark.

Over and above, name plate of aluminum of suitable size and thickness,

containing all the above information, shall be fixed on the drum in addition

to the painting.

1.9.5 The firm shall be responsible for any damage to the cables during transit

due to improper and inadequate packing. Wherever necessary, proper

arrangement for lifting, such as lifting hooks, shall be provided. Any cable

found short inside the packing cases shall be supplied by the supplier,

without any extra cost.

1.9.6 Each consignment shall be accompanied by a detailed packing list, containing the

following information:

(a) Name of consignee

(b) Details of consignment

(c) Destination

(d) Total weight of consignment

(e) Handling and unpacking instruction

(f) Bill of materials, indicating contents of each package.

1.10 Erection Specifications for Cable laying:

1.10.1 Scope

Scope includes supply, installation, testing and commissioning of the cable

system.

1.10.2 Standards:

The work shall be carried out by the best workmen with confirmation with

this specification, codes of practice of Indian Standards Institution, approved

drawings and instructions of Engineer in charge or authorized

representative. In case of any conflict between the standards, the

instructions of Engineer in charge shall be binding.

1.10.3 Cable laying:





1.10.3.1 Cables as far as possible shall be laid in complete, uncut lengths from one

termination to the other.

1.10.3.2 Cables shall be properly arranged in the trenches such that criss crossing is

avoided and final take off to the switchgear is facilitated. Contractors are

responsible for arrangement of cables in cable trench. Adequate sizes of GI

pipe sleeves shall be utilized for end termination of cable. Pipe sleeves shallbe laid at an angle of maximum 45˚C to the trench wall. In case of larger dia

cables i.e. 50 mm and above adequately sized pipe with larger bend radius

shall be provided for ease of drawing of cable or for replacement. In place

where it is not possible, a smaller trench may be provided as approved by

Engineer in charge.

1.10.3.3 Each underground cable shall be provided with identity edges of lead

securely fastened every 30 m of its underground length with at least one tag

at each end before the cable enters the ground. Cable markers shall be

provided as directed at every 30 m and at cable joint locations.

1.10.3.4 Temporary ends if any shall be protected against dirt and moisture and

prevents damage to the insulation. Proper PVC or rubber insulating tape

shall be used. Use of friction type or fabric tape is not permitted. Lead

sheathed cables shall be plumbed with lead alloy.

1.10.3.5 Cables shall be handled carefully during installation to prevent damage to

the cables. Protective pipes shall be used as and when required as directed.

1.10.3.6 Cables laid underground in excavated cable trenches shall be as per the

drawings. Trenches shall be of sufficient depth and width for laying of all

cables. Cables shall be spaced properly so that heat dissipation is attained.

Minimum depth of buried cable trench shall be 900 mm for HV cables. The

depth and width of the trench may vary depending on the number of layers

of cables as per Indian Standards.

Cables shall be laid in trenches as shown in the drawing. Before laying the

cable the bottom of trench shall be filled with sand duly leveled. The cables

laid on this sand shall be covered with 150 mm sand on top of largest

diameter of the cable. Sand shall be lightly pressed. Protective covering of

suitable bricks/HT tiles/half round slab shall be provided before back filling

the trench with soil, rammed and leveled.

1.10.3.7 Insulation resistance test of all the cables shall be taken in presence of

Engineer in charge. Defective cables shall be immediately replaced before

laying of cables of other groups.

1.10.3.8 Suitable GI/HDPE/RCC hume pipes for protection as directed shall be

provided as required. Cable ends shall be carefully drawing through such

pipes to prevent damage to the cable. Radius at bending shall not be less





than the recommended bending radius of the cables specified by the

manufacturer. Standard gauge of pipe filling shall be used for sizing the

pipe.

After installation and testing of cables, conduit ends shall be plugged with a

suitable weatherproof plastic compound/ putty for sealing purpose as

directed. No extra payments shall be allowed for the laying.

1.10.3.9 Prior approvals for cutting holes for laying cable in existing structures and

foundations shall be obtained from the Engineer in charge.

1.10.3.10 At road/railway/canal crossing where cable enters pipe sleeves adequate

bed of sand shall be given so that the cable do not slack and get damaged by

pipe ends.

1.10.3.11 Drum number shall be recorded for each cable in cable schedule. Cables

shall be routed so that they are not subjected to heat from adjacent hop

pipings and vessels.

1.10.3.12 Appropriate support shall be provided to prevent sagging of cable. Distance

between supports shall be maximum 450 mm for HT cable.

1.10.3.13 GL pipes laid for cable laying shall be bend with hydraulically operated

bending machine.(which is to be arranged by the contractor).Bends of pipes

shall be placed in such a way that they are concealed in wall, soil or

structures. The open end of the pipes shall be suitably plugged with plugs

supplied by the contractor at no extra cost.

1.10.3.14 Supporting angles for cables shall be suitably clamped/tied by means of

nylon cords and the angles shall be painted before laying the cables. Thepaint shall be done with one coat of red lead paint and two coats of

approved bituminous aluminium paint unless otherwise specified.

1.11 Termination:

The 11 kV cable termination/joints shall be done by skilled and experienced

jointers duly approved by the Engineer in charge. Termination including

supply of jointing kit is included in the contractors scope unless specified

otherwise.

Termination kits shall be suitable for termination of the cables to indoor

switchgear or to weather proof cable end box of an outdoor mountedtransformer an outdoor type for termination at poles. The terminating kits

shall preferably be as of the following types.

PUSH ON/Heat shrink type of 3m (M seal) or Raycham make using factory

molded silicone rubber insulators. For outdoor installations weather shields,

shielding ends and any other accessories required should form part of the

kit.





Straight through jointing kits shall be suitable for underground installation

with uncontrolled backfill and possibility of flooding by water. The jointing

kit shall be preferably of PUSH ON/Heat shrink type of 3m (M seal) or

Raycham make.

1.11.1 Tests:

Before energizing the insulation resistance of every circuit shall be

measured from phase to phase and from phase to ground with 2.5/5 kV

Megger both before and after backfilling.

D.C High voltage 18 kV test shall be conducted after installation on the

following and test results to be recorded as per UGVCL format in presence

of Engineer in charge.

a) All cables above 1100 volts.

Type tests are to be carried out at manufacturer’s works for quality approval

of termination/jointing kits. Following tests confirming to the latest IS 13573

and or IEC 502.2, 466 and VDE 0278 and C 81 specifications. The report of

last three years type tests result shall be submitted for approval of the Kits.

Terminations shall be kept open so that switchgears, transformers etc are

not subjected to test voltage.

Tests for termination/jointing kits:

Indoor & Joint IS 13573

1) Conductor Resistance Test

2) Impact Test3) AC High Voltage Test ( Dry )

4) Partial Discharge Test5) Impulse with stand test

6) AC Voltage life test with cyclic current loading

7) Partial Discharge Test8) AC Voltage life test with cyclic current loading

9) Thermal Short circuit test


11) Conductor Resistance Test12) Impulse with stand test

13) D.C.High Voltage test

Out Door IS 13573


2) AC High Voltage Test ( Dry )

3) Wet Power frequency test

4) Partial Discharge Test

5) Impulse with stand test










11) Water Tightness Test for Out door




Indoor as per VDE 0278





5) AC High Voltage Test ( Dry )

6) Tan Delta as a Function of Voltage &Capacitance.

7) Tan Delta as a Function of temperature



10) Partial Discharge Test11) Tan Delta as a Function of Voltage &Capacitance.





16) Conductor Resistance Test17) Impulse with stand test


Out door Termination VDE 02781) Partial Discharge Test



4) Impact Test5) Wet power frequency AC High Voltage Test


8) Tan Delta as a Function of temperature





14) Short circuit test









19) Dynamic short circuit



As per C - 81

1) Impact Test2) Insulation Resatance Test

3) A.C High Voltage Test

4) Insulation Resatance Test

5) Heat shock Test

Test after Heat shock Test

6) Insulation Resistance Test



9) Elecric Heat cycle Test

Evaluation after Electrical heat cycle Test




After Sheath Damage Test

13) Elecric Heat cycle Test

Evaluation after Electrical heat cycle Test & sheath

damage




17) Examination Of Joint

1.12 TECHNICAL AND GUARANTEED PARTICULARS:

The bidder shall furnish all Guaranteed Technical Particulars, as called for, in

Appendix - I of this Specification. Particulars, which are subject to

guarantee, shall be clearly identified. Offer not containing these in

formations will not be considered for acceptance.

1.13 PERFORMANCE CERTIFICATE:

Bidders shall also submit performance reports for the specified size of

cables supplied to other State Electricity Boards / reputed firms, with the

clear indication of the period since when the cables performed satisfactory

service.

1.14 LEGIBLE SUBMISSION:

Only required relevant, legible documents shall be submitted to avoid delay

due to back reference.





APPENDIX – I

SCHEDULE OF GUARANTEED TECHNICAL PARTICULARS FOR 11 KV XLPE POWER CABLE

(To be filled in and signed by the Bidder)

1.00.0 GENERAL:

1.01.0 Name of Manufacturer :

1.02.0 Place of Manufacturing :

1.03.0 Applicable standard IS/IEC :

1.04.0 Design ambient temperature0C :

1.05.0 Cable particulars, whether, confirmed,

as per clause 1.5 of Section I of

Technical Specification (Yes/No)

:

Note: (Fill – up separate column for the following particulars for each type & size of

cable)

2.00.0 CABLES:

2.01.0 Voltage grade (Uo / U) :

2.02.0 Whether suitable for neutral earthed /

unearthed System

:

2.03.0 Permissible voltage & frequency

variation for satisfactory operation

:

2.04.0 Nos. of cores & size :

2.05.0 Continuous current carrying capacity :

2.05.1 For standard condition as per IS

1) In air (Amp.)

2) In ground ( “ )

3) In duct ( “ )

4) In trench ( “ )

:

:

:

:





2.05.2 For site condition

1) In air (Amp.)

2) In ground ( “ )

3) In duct ( “ )

4) In trench ( “ )

:

:

:

:

:

3.00.0 CONDUCTOR:

3.01.0 Material & its applicable IS. :

3.02.0 Shape of conductor :

3.03.0 Nominal cross section area (mm2) :

3.04.0 Number of wires per core :

3.05.0 Nominal diameter & cross section area

of each wire used in each core of the

conductor

:

4.00.0 CONDUCTOR SCREENING:

4.01.0 Type :


4.03.0 Continuous working temp0C :

4.04.0 Nominal thickness (mm) :

5.00.0 INSULATION:

5.01.0 Material & its applicable IS :

5.02.0 Thickness of insulation (mm)

a) Between cores

b) Between cores & inner sheath

:

:

5.03.0 Tolerance in thickness (percent) of

insulation

:





5.04.0 Diameter of core over insulation (mm) :

5.05.0 Specific insulation resistance at ninety

(90) degree Centigrade (Ohm-Cm)

:

6.00.0 INSULATION SCREENING:


6.02.0 Thickness (mm):

1) Semi-conducting part

2) Metallic part (copper tape)

:

:

6.03.0 Whether overlapping provided for

copper tape

:

6.04.0 Current carrying capacitya) Continuous (Amps.)

b) S.C. current duration of 3-Sec. (KA)

::

:

6.05.0 Diameter of core over screening (mm) :

6.06.0 Whether insulation screen is removable

without the application of heat

:

7.00.0 FILLER:


7.02.0 Whether suitable for operating

temperature of Cable

: Yes/ No

7.03.0 No of fillers provided including central

filler

:

8.00.0 INNER SHEATH:


8.02.0 Extruded or wrapped :

8.03.0 Thickness (mm) :

8.04.0 Diameter of cable over inner-sheath

(mm)

:





9.00.0 ARMOURING:


9.02.0 Type of armouring :

9.04.0 Nos. of strips :

9.05.0 Diameter of cable over armouring :

9.06.0 Current carrying capacity of armour

a) on continuous basis (Amp)

b) short circuit current duration of 1

sec (KA)

:

:

:

10.00.0 OUTER SHEATH:


10.02.0 Thickness of sheath :

10.03.0 Tolerance on thickness of sheath :

10.04.0 Over all diameter of cable (mm) :

10.05.0 Scheme for identification :

11.00.0 CABLE CONSTANT:

11.01.0 AC resistance per core at operating

temp. (Ohm/KM)

:

11.02.0 DC resistance per core at 200C

(Ohm/KM)

:

11.03.0 Reactance per core (Ohm/KM) :

11.04.0 Capacitance per core (Microfarad/ KM) :

11.05.0 Insulation resistance at 270C (Ohm/ KM) :





11.06.0 Loss tangent :

11.07.0 Dielectric constant :

11.08.0 Maxi. Cable charging current at normaloperating voltage (Amp/KM) :

12.00.0 OTHER PARAMETERS:

12.01.0 Recommended minimum braiding

radius (mm)

:

12.02.0 Safe pulling force :

12.03.0 Cable weight (Kg./KM) :

13.00.0 CABLE DRUM:

13.01.0 Net weight of cable (Kg.) :

13.02.0 Drum weight (Kg.) :

13.03.0 Shipping weight (Kg.) :

13.04.0 Whether ISI Mark shall be indicated on

drum (Yes/No)

:

13.05.0 Length of cable per drum (Meter) :

14.00.0 Whether details shall be embossed as

stated under Cl. 1.9.4 of Technical

Specification (Yes/No)

:

15.00.0 Whether type test reports submitted,

as stated under Cl. 1.6.1 of Technical

Specification (Yes/ No)

:





16.00.0 Whether drawings submitted as

specified under Cl. 1.8.1 of Technical

Specification. (Yes/ No)

:

17.00.0 Whether unpriced schedule of offered

items submitted with Technical offer.

(Yes/ No)

: .

Signature of the Bidder: __________

Name: _______________________

Designation: ___________________

Date: _____________

Authorised common rubber

Stamp / seal of the bidder: _________





GUARANTEED TECHNICAL PARTICULARS

PUSH ON OUT DOOR TERMINATION ON 11KV (E) XLPE CABLE

Sr.

No.

Particulars Unit Guaranteed values.

1.0 MANUFACTURER2.0 APPLICABLE STANDARDS As per IS:13573

3.0 GUARANTEED PARTICULARS

For the nominal(phase to phase)

System voltages

Maximum system voltage

KV

KV

11KV

12KV

3.1 A.C. withstand voltage Dry

(ph/ground)

Time duration

KV

Mins

35 KV

1 Min.

A.C. withstand voltage

Wet(ph/ground)

Time duration

KV

Mins

28 KV

1 Min.

3.2 Partial Discharge at 2 Uo pC <5pC

3.3 Impulse withstand,1.2/50/Us kV 75KV

3.4 Load cycle Test

a)Each Cycle-Heating Duration

Temperature

Cooling Duration

b)Number of Cycles

c)Continuous phase to ground

Voltage Withstand

Hrs

0C

Hrs.

kV

5

10

3

117

2.5Uo

Leak Tightness 9 Cycles.

3.5 Thermal Withstand Short circuitcurrent 1Sec.

ka As per IS:13573

3.6 Dynamic short circuit Withstand Ka peak 2.55 x Is As per IS:13573

3.7 DC Voltage kV 48Kv for 30Mins

4.0 KIT PARTICULARS

4.1 Material of the tubing/molded parts EPDM rubber

4.2 Method of stress control Pre molded stress cone.

4.3 Method of environmental seal EPDM rubber.

4.4 List of items included in the Kit

a)For Terminations

b)Allowable kit storage temperature

c)Kit shelf life

0C

Years

Yes

Normal Ambient Temperature

More then 5 Years5.0 Cable Termination Instruction

Manuals

Yes/No Yes






PUSH ON INDOOR TERMINATION ON 11KV (E) XLPE CABLE

Sr.

No.


1.0 MANUFACTURER

2.0 APPLICABLE STANDARDS As per IS:13573



System voltages


KV

KV

11KV

12KV


(ph/ground)

Time duration

KV

Mins

35 KV

1 Min

3.2 Partial Discharge at 2 Vo pC <5pC


3.4 Load cycle Test


Temperature

Cooling Duration

b)Number of Cycles


Voltage Withstand

Hrs

0C

Hrs.

kV

5

100

3

126

2.5Uo

3.5 Thermal Withstand Short circuit

current 1Sec.

ka As per IS:13573


3.7 DC Voltage kV 48Kv for 30Mins.

4.0 KIT PARTICULARS

4.1 Material of the tubing/molded parts EPDM rubber.4.2 Method of stress control Pre molded stress cone.

4.3 Method of environmental seal EPDM rubber.


a)For Terminations


c)Kit shelf life

0C

Years

Yes.

Normal Ambient Temperature.

More then 5 Years.

5.0 Cable Termination Instruction

Manuals

Yes/No Yes


HEAT SHRINK OUT DOOR TERMINATION ON 11KV (E) XLPE CABLE





Sr.

No


1.0 MANUFACTURER



3.1 For the nominal(phase to phase)

System voltages


KV

KV

11KV

12KV


(ph/ground)

Time duration

KV

Mins

35 KV

1 Min


Wet(ph/ground)

Time duration

KV

Mins

28 KV

1 Min



3.5 Load cycle Test


Temperature

Cooling Duration

b)Number of Cycles


Voltage Withstand

Hrs

0C

Hrs.

kV

5

100

3

117

2.5Uo

3.6 Leak Tightness 9 Cycles.


current 1Sec.

ka As per IS:13573

3.8 Dynamic short circuit Withstand Ka peak 2.55 x Is As per IS:135733.9 DC Voltage kV 48Kv for 30Mins.

4.0 KIT PARTICULARS

4.1 Material of the tubing/molded

parts

Polyolefin

4.2 Method of stress control High permittivity Material.

4.3 Method of environmental seal H.S. Anti-tracking Tubes.

4.4 Allowable Kit storage Temperature 0C Normal Ambient Temperature.

4.5 Shelf life of H.S components Years More then 5 Years.


Manuals

Yes/No Yes


HEAT SHRINK IN DOOR TERMINATION ON 11KV (E) XLPE CABLE





Sr.

No


1.0 MANUFACTURER



3.1 For the nominal(phase to phase)

System voltages


KV

KV

11KV

12KV


(ph/ground)

Time duration

KV

Mins

35 KV

1 Min



3.5 Load cycle Test


Temperature

Cooling Duration

b)Number of Cycles


Voltage Withstand

Hrs

0C

Hrs.

kV

5

100

3

126

2.5Uo


current 1Sec.

ka As per IS:13573


3.8 DC Voltage kV 48Kv for 30Mins.

4.0 KIT PARTICULARS

4.1 Material of the tubing/moldedparts Polyolefin


4.3 Method of environmental seal H.S. Anti-tracking Tubes.

4.4 Allowable Kit storage Temperature 0C Normal Ambient Temperature.

4.5 Shelf life of H.S. components Years More then 5 Years.


Manuals

Yes/No Yes


HEAT SHRINK STRAIGHT THROUGH JOINT ON 11KV (E) XLPE CABLE




Sr.

No.


1.0 MANUFACTURER




System voltages


KV

KV

11KV

12KV


(ph/ground)

Time duration

KV

Mins

35 KV

1 Min.


Wet(ph/ground)

Time duration

KV

Mins

28 KV

1 Min.

3.2 Partial Discharge at 2 Uo pC <5pC


3.4 Load cycle Test


Temperature

Cooling Duration

b)Number of Cycles


Voltage Withstand

Hrs

0C

Hrs.

kV

5

100

3

63

2.5Uo

Water tightness test KV 60Nos.at 2.5 Uo. as per above cycles.


current 1Sec.

ka As per IS:13573


3.7 DC Voltage kV 48Kv for 30Mins4.0 KIT PARTICULARS

4.1 Material of the tubing/molded parts Polyolefin.


4.3 Method of environmental seal H.S. Black Insulating Tubes.


a)For Terminations


c)Kit shelf life

Yes/No

0C

Years

Yes

Normal Ambient Temperature

More then 5 Years


Manuals

Yes/No Yes

11kv xlpe cable

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