15kV and 24.2kV Class Automatic Distribution Recloser GED 823 25022008

8/12/2019 15kV and 24.2kV Class Automatic Distribution Recloser GED 823 25022008

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CONTENTS

1. OBJECTIVE 22. APPLICABILITY 23. BASIC CONCEPTS 2

3.1 Normative Conditions 23.2 Units of Weights and Measures 23.3 Technical Bidding 23.4 Spare Parts 33.5 Special Tools 33.6 Calculation Memorials 3

3.7 Manufacturing 43.8 Warranty 43.9 Documents for Approval 43.10 Inspection and Testing 73.11 Acceptance and Rejection 93.12 Packing and Transportation 103.13 Technical Instructions for Training 11

4. ENVIRONMENT 114.1 Installation Site Conditions 124.2 Electrical Systems Characteristics 12

4.2.1 15-kV Class System 124.2.2 24.2-kV Class System 12

5. DESCRIPTION 125.1 15-kV Class Recloser 12

5.1.1 Constructive Characteristics 125.1.2 Control and Protection System Characteristics 155.1.3 Voltage Transformer 17

5.2 24.2-kV Class Recloser 185.2.1 Constructive Characteristics 185.2.2 Control and Protection System Characteristics 185.2.3 Voltage Transformer 18

5.3 Classification Data 195.4 Finishing and Painting 195.5 Nameplate 195.6 Recloser Identification 20

6. FORM 206.1 Technical Characteristics by the Time of Bidding 20

7. ANNEXES 238. REVISION NOTICE 23

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15-kV and 24.2-kV Class Automatic Distribution Recloser

823 Instruo 2.0 Ronaldo Antnio Roncolatto 25/02/2008 1 de 25

IMPRESSO NO CONTROLADA


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1. OBJECTIVEThe present Technical Specification determines the requirements that shall be satisfied for thesupply of high-voltage three-phase 15-kV and 24.2-kV class automatic circuit-recloser, as wellas its accessories, for outdoor installation, entirely new and without prior use, to be used in theoverhead primary distribution electrical grid of power utilities CPFL Paulista, CPFL Piratininga,CPFL Santa Cruz, RGE Rio Grande Energia e CPFL Jaguarina (CPFL Jaguari, CPFLMococa, CPFL Leste Paulista e CPFL Sul Paulista), herein referred to as CPFL.

This document is an English version of the original document in Portuguese, GED 800.

2. APPLICABILITYEngineering, Asset Management, Planning, Operation and Maintenance areas of CPFLEnergias power distribution utilities.

3. BASIC CONCEPTS

3.1 Normative ConditionsThe equipment and its accessories and materials shall be designed, manufactured and testedaccording to the main applicable Brazilian and/or foreign Technical Standards, in their latestrevisions, among ABNT, IEC, ANSI, ISO, BS, DIN, VDE and others, except where otherwiseestablished by this Technical Specification. Should conflict occur between any items in theTechnical Standards, the item which assures best quality shall prevail over the others or,alternatively, the decision shall be taken by CPFL.

3.2 Units of Weights and MeasuresAll documents and drawings shall make use of the International System of Units (MetricSystem). If another system of units is used, conversion to the International System shall beindicated next to it.

3.3 Technical BiddingTechnical Bids, as well as all the technical documents and annexes which make part thereof,shall be written in Portuguese or in English. The technical standardization applicable to theequipment being offered shall be clearly appointed. Proponents are entirely responsible for any

error concerning writing or printing that may affect interpretation of Technical Bids; in such acase the Proponent will be subject to the consequences and penalties thereof.

Technical Bids shall necessarily contain the information asked for in the data sheets of Sub-Item 6.1 Technical Characteristics by the Time of Biddingof this Technical Specification,completely filled in and signed by the responsible Proponent. After confirmation of the PurchaseOrder no alterations of declared type and/or supplier will be accepted without CPFLs prioranalysis and authorization. Proponents shall attach separate sheets containing any answersthat are too long to be inserted in the data sheets of Sub-Item 6.1 (with clear reference tothem), or that include other information of real interest for the perfect characterization of theequipment now being bid.

The accessories and components of the equipment shall be of type and manufacture asindicated in this Technical Specification. The use of such parts do not exempt the Bidder from

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all responsibilities thereof. The Bidder may, nevertheless, make use of alternative components,provided that a justification for inadequacy of those specified by CPFL is clearly expressed andquality, functions and technical characteristics herein specified are fully maintained, as well astheir use has been approved by CPFL prior to application onto the equipment. Every accessoryand component necessary for the full operation of the equipment shall be supplied even thoughthey may have not been herein specified.

Technical Bids shall also contain the following information:

Outline drawing of the equipment, showing main dimensions, weights, components andaccessories, etc.;

Drawing of the cubicle, box, cabinet or panel of the recloser protection and control, with atleast front view containing indication of internal components and accessories; A copy of the drawings or catalogues of components and accessories to be used; The complete list of materials for the supply, including recommended spare parts and special

tools, and the instrumentation eventually necessary for mounting and maintenance; Detailed scheme of the processes for treatment, finishing and painting of the parts to be

painted; Detailed drawing of the support for fixing the recloser and the protection and control cabinet

to the pole; Tripping time current curves for phase, earth, and sensitive earth protections; One copy of the reports of type and special tests that have already been carried out by

independent laboratories on equipment of the same type or model as that now being bid; A list with quantities of pieces of equipment of the same type or model as that now being bid

purchased by other customers, including these customers names and purchase dates.

CPFL may require any other information judged necessary for the perfect understanding of thetechnical characteristics of the type or model of the equipment now being bid.

3.4 Spare PartsThe Bidder shall quote items concerning the recommended spare parts, which shall be strictlyidentical to those correspondent in the original equipment, and covering an operative period ofat least 5 years. They may be subjected to inspection and testing, under CPFLs criterion.Packing and transportation of these components shall be done taking into consideration what is

established in Sub-Item 3.12 Packing and Transportationof this Technical Specification.

3.5 Special ToolsThe Bidder shall quote items concerning any special tools necessary for mounting andmaintenance of the equipment and its accessories that are not usually found in the Brazilianmarket. They may be subjected to inspection and testing, under CPFLs criterion. Packing andtransportation of these special tools shall be done taking into consideration what is establishedin Sub-Item 3.12 Packing and Transportationof this Technical Specification.

In case a tool proves to be special in mounting or maintenance and it has not been included inthe Bid, the Supplier will be obliged to furnish it in the quantity indicated by CPFL at no cost.

3.6 Calculation Memorials

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By the time of design, the Supplier shall send the calculation memorials of the equipment toCPFL, demonstrating the main characteristics of the equipment. Should any information beconsidered confidential by the Supplier, he will not be obliged to furnish them. However, CPFLreserves the right to consulting them during design, manufacture and testing, if in its opinion thisis deemed necessary for the purpose of clarifying doubts and attesting the quality of theequipment.

3.7 ManufacturingThe Supplier will not be allowed to modify the terms, values and units adopted in this TechnicalSpecification. In case of details not mentioned in this Specification the Supplier shall makecertain that they obey the highest standard available in the field.

Whenever more than one unit of the same model or type of equipment is acquired under thesame Puchase Order, they shall have the same design and be essentially identical, with all thecorresponding parts and accessories being interchangeable.

Thus, any modification to the original project which proves technically necessary shall bepreviously communicated and may only be done after CPFL formal approval.

3.8 WarrantyThe equipment and its accessories and components shall have a warranty covering any design,manufacturing and finishing defect for a minimum period of 30 (thirty) months after unloading atthe destination stated in the Contract.

During the warranty period the Supplier shall substitute or repair as quickly as possible, afterCPFL request, any accessory or part which is defective or faulty due to unsuitable material ormanufacturing or finishing processes. If after having been notified the Supplier refuses to do therequired repairs or replacements, CPFL reserves the right to do the service and charge theircosts to the Supplier, and this will not affect the equipment warranty.

In case of repair or replacement of parts, components, and even the whole equipment, thewarranty shall according to case be renewed and come into force after the equipment is put intooperation again. After the repairs, if, a new set of tests deemed necessary and specified also byCPFL shall be applied to the equipment at no cost.

Should any failure or fault as a consequence of defective or unsuitable design or manufactureoccur in the equipment after expiration of the warranty period, the Supplier shall be solelyresponsible, at no cost to CPFL.

3.9 Documents for ApprovalThis Item specifies the requirements to be followed concerning the technical documentationwhich shall be approved by CPFL, after the Purchase Order is signed, referring to the supply ofthe equipment described in this Technical Specification. Should any document requested byCPFL involve data proven by the Supplier to be confidential, he will not be obliged to furnishthem. However, CPFL may examine them if this is deemed necessary for the purpose ofattending and attesting the manufacturing quality.

Approval of the documents shall not exempt the Supplier from his responsibilities for design and

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manufacture of the equipment, which shall be in accordance with this Technical Specificationand fulfill its purpose. The Supplier may send CPFL any document besides those mentioned inthis Specification whenever he considers this necessary. CPFL may also at his own discretionand at any given time specify and require from the Supplier any document or description of anyaccessory or material.

All the documents asked for approval in this Sub-Item 3.9shall be in Portuguese, shall be sentat the same time in a single set, and shall preferably be made by computer media resources.They shall comply with the following ABNT Standard requirements for paper sizes: A1, A2, A3and A4. Adaptations obtained by matching equal or consecutive specified sizes are not allowed.

At the end of the approval process such a documentation shall necessarily be in digital media tobe included in CPFLs electronic document system, for which the following applicationssoftwares at the minimum indicated versions shall be used. Any other software not included willbe subject to agreement between parties:

Texts, spreadsheets, presentations and data banks: Microsoft Office 97; Images: .TIFstandard; Time schedules: Microsoft Project 98; Drawings:Autodesk AutoCAD Release 14, and layers shall be created to separate and

identify the main parts or materials indicated.

Thus, this documentation shall be sent to CPFL (and got back) by electronic means (e-mailing),

or by floppy discs. Alternatively, 4 printed copies of all the set of drawings and documents of theequipment may be sent. Any way, the Supplier shall provide the documentation for CPFLapproval within 30 days after confirmation of the Purchase Order and before manufacture starts.All the documents shall bear a caption with the following information:

The name CPFL; Name and type/model of equipment and its manufacturer; Number and date of the Purchase Order; Title, sequential number and scale; Manufacturing serial number or numbers of the equipment referring to the Purchase Order.

Once these drawings have been checked by CPFL within 30 days after their receipt, a copy ofeach one will be returned to the Supplier, classified according to one of the followingpossibilities:

Approved drawing, stampedAPROVADO PARA CONSTRUO(Approved forManufacture) by CPFL, or;

Drawing approved with restrictions, stampedAPROVADO COM RESTRIES(Approvedwith Restrictions) by CPFL, containing observations to be followed by the Supplier, or;

Reproved drawing, stamped REPROVADO(Reproved). The eventual observations shall befollowed by the Supplier.

After having followed the required instructions the Supplier shall submit the modified document

for CPFL approval again, and these mentioned possibilities will repeat until definitive approval.

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Any further modifications may be performed only after CPFLs previous approval.

The documents shall be at least those listed below, with the mentioned information and otherdetails considered important:

Outline drawing of the recloser, made up of floor plan, elevation, side views, section viewsand captions, indicating all the accessories localization, dimensions, weights and forces;

Drawing of the protection and control cabinet with details of all the components, functionschemes and electronic circuitry connection schemes;

Detailed drawings of the poles, bushings, line terminals, main and auxiliary contacts,auxiliary coils, axes, couplings, rods, etc., with all dimensions and specifications necessary

for mounting or replacement of these components; Constructive drawings and functional schemes of the recloser operating mechanism, with

bearings, joints, transmissions, etc.; Detailed drawing of the auxiliary voltage transformer, if any; Drawing of the terminal blocks with their identification numbers, including identification of

wiring arriving at each terminal; Drawing of the fixing support for the recloser and its protection and control cabinet, showing

dimensions and enough details for attachment to the pole, with materials specification andfinishing;

Detailed drawing of earth connector for the recloser and the protection and control cabinet; Drawings, specifications and wire and connection diagrams for current and voltage

transformers; Current transformers saturation curves for frequency of 60 Hz; Tripping time current curves for phase, earth and sensitive earth protections; Nameplate drawing; If applicable, table or diagram for SF6gas density switches actuation values; List of all the accessories and components used (material list), with description, type,

characteristics and quantities thereof, as well as their location in the functional schemes; Drawings and catalogues or leaflets of all the accessories and components used; List of identification tags of the accessories and components; List of special tools and spare parts; Instructions Manual; Quality Control Plan; Manufacturing schedule.

The Instructions Manual shall be such as to satisfy at least the following requirements:

It shall contain a chapter with information of particularities of the equipment supplied; It shall have an index showing the sections, items, topics and annexes, numbered in such a

manner to facilitate handling; It shall contain detailed information concerning and necessary for handling, transportation,

storage, mounting, putting into service, operation and maintenance of the equipment and itsaccessories and materials;

It shall cover the aspects related to the tests and checking, adjustments and calibration,

cleaning and lubrication, frequency of checking, lifting and moving, field tests, instrumentsand devices to be used and so on;

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In case there are special tools for mounting and maintenance of the equipment, they shall bereferred to in the Manual, according to their use;

It shall have a cover with the following information:Supplier's name;Equipment and its type/model;Number and date of Purchase Order (P.O.);Title and number or code for reference;

The Quality Control Plan shall contain all the tests and checkings for reception of raw material,manufacture, and final tests. The corresponding test methods, technical standards, and sites foreach event realization shall also be indicated.

The Manufacturing Schedule will be given back with eventual necessary modifications orsuggestions within 15 days of its receipt by CPFL. Any modification to this Schedule after it hasbeen approved shall be communicated with its reasons beforehand for CPFL analysis anddecision. The Manufacturing Schedule shall fulfil the following requirements:

Technique of elaboration: Critical Path Method (CPM) time; Initial event: date of confirmation of Purchase Order, or other documented indication by

CPFL; Final event: delivery and acceptance by CPFL at its warehouse or works; It shall delineate all main events that involve each stage of project, provisioning of raw

materials delivered at the plant and assembly of each component of the equipment,containing, at least, the following topics:Processing of the order;Project;Drawing analysis;Purchase of material;Purchase of imported material;Assembly and electrical connections;Manufacture inspection and tests;Final inspection and tests;Painting;

Packing;Transportation.

3.10 Inspection and TestingThe equipment, its accessories and the raw material for its manufacture shall be submitted to allthe tests indicated in the Quality Control Plan approved for the supply. CPFL reserves the rightto attend the tests and perform inspections in any step of the supply, appointing its Inspectorsand following the approved Manufacturing Schedule. Spare parts and special tools are included.Inspection and tests scheduled to happen during manufacture shall have their dates informed toCPFL at least 10 days in advance.

Moreover, the Supplier shall communicate CPFL at least 10 days in advance the date when the

equipment, or lot thereof, is ready for final inspection, complete with all its accessories andwiring finished. For this purpose the Supplier shall send an Inspection and Testing Schedule

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Operation of Protection and Control Cabinet:The test consists in checking if the recloser protection and control cabinet functions are innormal conditions. The test shall be performed at operating voltage and values set as per thefollowing table, in 5 series, as applicable for the recloser rated current:

SET VALUESFUNCTIONSDESCRIPTION

(Operating Sequence)1stSeries 2ndSeries 3rdSeries 4thSeries 5thSeries

- fast curve- slow curve

- phase tripping- earth tripping- 1streclosing- 2nde 3rdreclosings- reset time

13

100 A10 A1 s5 s

40 s

31

150 A15 A2 s

10 s30 s

04

200 A20 A5 s

20 s10 s

40

280 A30 A0.75 s

5 s5 s

40

400 A40 A0.75 s

5 s5 s

During the test conditions of the functions below shall be checked:

- Switch for inserting and extracting the earth protection;- Operations number reading for earth protection;- Reading of instantaneous values for phase and earth currents by means of a portable

ammeter;

- Recloser operation by means of a remote command.

Inspection and testing reports shall contain information necessary to their perfect identificationand traceability with respect to the supply of the tested equipment, such as:

Technical identification of the equipment (name, type, serial number, characteristics, etc.); Number and date of the corresponding Purchase Order (P.O.); Schemes, calculations, croquis, results, curves, tables, graphs and oscillograms; Guaranteed values for each inspection or test; Name and signature of the Inspector who attended the inspection or test; Name and signature of the laboratory supervisor and his declaration certifying the exactness

of data and results of the inspection or test; Site and date where inspection or test is carried out;

The Supplier shall send CPFL these reports within 20 days after the accomplishment of theinspection, and this may be done by electronic means, as has already been informed above inSub-Item 3.9 Documents for Approval. Alternatively and within the same time, 4 printedcopies may be sent of the reports.

3.11 Acceptance and RejectionEquipment acceptance will take place with realization of at least the following events:

Issue of the corresponding Boletim de Inspeo (Inspection Bulletin) by CPFL, once theequipment be approved in all the tests it is subjected;

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The complete inspection and testing reports have been received by CPFL; Integral accomplishment by Supplier's part of Sub-Item 3.9 Documents for Approvalof

this Technical Specification; Physical reception at delivery site and checking of all the parts, accessories, components,

special tools and spares which belong to the supply, attesting quantity according to PurchaseOrder and their perfect integrity.

Inspection or its omission as well as acceptance of the equipment by CPFL will not exempt theSupplier from its responsibility to furnish the equipment in thorough accordance with thePurchase Order and this Technical Specification, nor will invalidate or hinder any CPFL's furtherclaims based in existence of inadequate or defective equipment.

Rejection of the equipment due to failures in inspection and tests, or owing to disagreement withthe Purchase Order or this Technical Specification, will not exempt the Supplier from itsresponsibility to furnish the equipment according to delivery date. If CPFL considers impossibledelivery of the equipment in the date as per Contract, or if the Supplier is unable to satisfy theContract requirements, CPFL reserves the right to rescind all its obligations and acquire theequipment elsewhere. In this case the Supplier will be considered to have infringed thePurchase Order and will be liable to applicable penalties.

3.12 Packing and TransportationOnce the equipment has been submitted to final inspection and accepted the Supplier maybegin its packing for further transportation and storage. Packing and preparation of equipmentto embarkation shall be the Supplier's sole responsibility, being subject to approval by CPFL.

Packing shall be done obeying the following main principles:

The equipment and its accessories shall be arranged so that a safe transportation isguaranteed, whatever the conditions and limitations, including environmental;

Packing shall have positioning indications of weights in order to guarantee stability of theequipment and its accessories to be transported;

Packing shall be designed in order to withstand and facilitate the operations of embarkation,disembarkation, handling and storage, taking into account operators security and equipmentintegrity;

All disassembled parts, accessories and instruments shall be numbered, and acorresponding indication shall exist on the equipment to facilitate mounting at installation site; Each part or lot of identical parts shall bear a label or an adhesive card containing name and

identification in accordance with the packing list and the Instructions Manual;

Each volume shall be identified in an indelible and legible way and in accordance with thepacking list (which shall also be supplied), having at least the following information:

The name CPFL; Suppliers name; Name and type/model of the equipment; Number fo the Purchase Order (P.O.); Number of the Bill;

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Equipment manufacturing serial number; Sequential number of the box or volume; Quantity of parts contained; Gross weight; Net weight; PARA CIMA(i.e., TOP) on one or more sides to indicate the top of the equipment.

The packing process should take into consideration the delivery of the equipment with all thepieces, parts and pertinent accessories necessary for its assembly, energization and operationin the respective destination addresses indicated in Purchase Order. Should any damage occurto the equipment due to unsuitable or defective packing the Supplier shall be entirely

responsible and shall replace the parts or the equipment affected, at no cost to CPFL.

If spare parts are purchased they shall be packed in totally closed boxes. Such boxes shall beidentified as stated above and have the inscription COMPONENTES DE RESERVA (i.e.,SPARES). The same applies, if the case, to special tools.

3.13 Technical Instructions for TrainingThe Supplier shall provide in the Technical Bid the presentation of technical instructions fortraining about installation, operation and maintenance of the equipment and its accessories andcomponents for the personnel indicated by CPFL. This presentation shall be organized by theSupplier and performed in Portuguese by one or more Supplier's qualified supervisors at thesite and dates to be defined in common agreement with CPFL, and before equipmentinstallation.

Such instructions shall encompass:

Complete instructions on handling, adjustment, mechanical and electrical testing, partsreplacement and use of templates, by means of manuals and drawings;

Instructions on functional logic of auxiliary circuitry for command, signalling and protection,based on the approved drawings and manual;

Identification of parts and components which shall be checked about operational limits andtolerances by means of a checklist, referring everything to planned maintenance periodicity;

Complete list of all the parts and components, including names, descriptions, catalogue

numbers, quantity used and identifications in the drawings; Complete instructions for installation and handling of all the accessories.

Training instructions shall provide capability for a complete use of the equipments availableresources, detection of problems, and adequate performance of corrective and preventivemaintenance.

4. ENVIRONMENTProduction processes of the equipment herein specified shall avoid or minimize negativeenvironmental impacts. In case productive activities are encompassed by BrazilianEnvironmental Authoritys CONAMA Resolution no. 237, issued in December 19 th, 1997, theSupplier shall present a copy of his Environmental Operation Licence (Licena de Operao) inorder to have his equipment technically qualified by CPFL.

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Also, in regard to this aspect the Supplier shall present a description of alternatives for thedisposal of the equipment and its constituent materials once lifetime expectancy has beenreached.

4.1 Installation Site ConditionsThe recloser and its accessories shal be suitable for use in tropical climate, directly exposed tosun rays and strong raining. It can also be installed onshore, thus exposed to the effects of thehigh atmospheric salinity. Therefore, the following minimum requirements shall be satisfied withrespect to environmental conditions:

Altitude above sea level: up to 1,000 m; Maximum temperature: +40 C; Minimum temperature: 10 C; Maximum average temperature for any 24-hour period: +30 C; Air relative humidity: 80 to 100 %; Wind speed: 130 km/h; Wind pressure: not greater than 700 Pa (71.4 kgf/m2); Polution: not inferior than level II (medium level) Technical Standard IEC 815.

4.2 Electrical Systems CharacteristicsThe electrical power systems in which the equipment will be installed constitutes the CPFLs

primary distribution grids, both urban and rural, and have the following characteristics, accordingto locale:

4.2.1 15-kV Class System

Rated frequency: 60 Hz; Neutral: solidly earthed; Rated voltages: 11.4 11.9 13.8 kV (rms values), according to locality; Maximum voltage: 15 kV (rms value).

4.2.2 24.2-kV Class System

Rated frequency: 60 Hz; Neutral: solidly earthed; Rated voltage: 23 kV (rms value); Maximum voltage: 24.2 kV (rms value).

5. DESCRIPTION

5.1 15-kV Class Recloser

5.1.1 Constructive CharacteristicsThe recloser shall be three-phase, automatic, appropriate for pole installation, with a sensordevice for overcurrent protection against overload and faults in the phases and to earth, capableto interrupt and reclose a medium-voltage circuit according to a pre-established sequence of

openings and closures followed by reset and blocking. It shall also be self-sufficient infunctioning of protection, control and programming.

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The recloser shall be supplied with its respective pole-fixing support (see Annex B) and all therequirements herein specified shall be taken into account in its design so that the manualoperation of the recloser by means of an isolating rod as per described ahead is not obstructed.

The recloser shall have the following electrical characteristics:

Maximum design voltage: 15.5 kV (rms value); Rated lightning impulse withstand voltage, for 1.250-s standard wave: 110 kV (peak); Rated power frequency withstand voltage:

- dry, 1 minute: 50 kV (rms value);

- wet, 10 seconds: 45 kV (rms value).

Rated frequency: 60 Hz; Rated minimum continuous current: 560 A (rms value); Rated minimum symmetrical interrupting current: 12 kA (rms value); Maximum interrupting time: 70 ms.

The electric arc interrupting medium shall be vacuum or sulphur hexafluoride gas (SF6). In caseof recloser with SF6gas, including as a part of the insulation, the recloser shall be supplied filledwith such a gas ready for operation. If SF6gas is the arc quenching medium, there shall be fullinsulation with open contacts for maximum operating voltage in case of total loss of positivepressure within the extinguishing chamber. SF6gas characteristics shall comply with BrazilianTechnical Standard ABNT NBR 11902 Hexafluoreto de enxofre Especificao (Sulphurhexaflouride Specification), or IEC Publication 60376 Specification of technical gradesulphur hexafluoride (SF6) for use in electrical equipment. Other technologies proven to beefficient for insulation or electric arc quenching purposes may also be accepted, under CPFLscriterion.

In recloser with gas, or even the air, whose constructive design may cause sudden pressureincrease with risk of explosion, be it under normal operation or following a failure to extinguishthe arc, an efficient pressure relief system shall exist as a safety requirement to deal withoverpressures of such a nature. Moreover, it will not be accepted recloser with mineral oil,neither for arc quenching nor as insulation purposes.

The recloser shall always be capable to perform automatic or manual opening after a closingoperation. It shall also be possible at least the independent blocking, suitably signalized, of thefunctions for automatic reclosing, earth protection, and sensitive earth protection, with therecloser either open or closed.

The recloser shall also be so designed as to have an operating mechanism with eye-tippedexternal levers, due identified and easily operated by means of an isolated rod from the groundthat allow its opening and closing. Upward position of these levers shall indicate that theequipment is closed; downward position shall block any reclosing possibility. The reclosermanual opening by means of such levers shall always be possible, independently on anyadjustment or situation.

It will not be accepted recloser that makes use of closing coil or solenoid. The devices for the

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equipment to perform its operations shall be adequate to indistinctly operate under any primary-grid rated voltage (see above Sub-Item 4.2), including within all the range of variations for thesevoltage service values which, overlapped, go from 10.5 kV to 14.5 kV. Provided the above-mentioned operative requirements be fulfilled, CPFL may accept under its own discretionrecloser that makes use of other technologies for closing (and even opening) operation, onceproven their efficiency.

The Supplier shall guarantee the values informed in the Technical Bid for interrupting, opening,arcing, and closing times.

The Technical Bid shall declare the maximum number of operations of the recloser for its

maintenance for the following multiples of the rated current: 5; 10; 15; 20. The recloser designshall allow easy execution of maintenance and replacement services of electromechanical andelectronic pieces and components.

The tank or metallic container that makes up the recloser external frame shall be provided withan earth connector, conveniently placed and adequate for 35-mm2 section copper cables. Itshall also have a perfect electrical contact between the recloser and its fixing support toguarantee a solid earthing. These requirements apply also to the voltage transformer, accordingto the pertinent Technical Standards (see Sub-Item 5.1.3 ahead).

As an information, the pole at which will be installed the recloser will be provided with a set ofdistribution-type 12-kV rated operating voltage lightning arresters, at both sides but at the same

level as the primary-grid cables, connected to earth by means of a 35-mm2 section coppercable, fixed externally onto the pole.

Whenever the case and the tank is not of the sealed or welded type, SF6 reclosers shall beprovided with the means to make possible their filling, drainage, and gas sampling, as well ashave a valve to couple to a manometer.

The recloser and its protection and control cabinet shall have means for being lifted and moved,such as hanging eyes or hooks. All the surface discontinuities such as access devices, vents,doors, windows, etc. shall be protected against weather effects and entering of insects.

The recloser shall have 2 operations counters, one to record the total operations and the otherto record the operations due to earth faults (including sensitive-earth faults). The counters shallbe made up of resistant material and have the same life expectancy of that of the recloser. If thecounters are placed externally, it shall be possible to see their readings from the ground, withnaked eye, being the equipment in operative position on the pole. Each counter shall have atleast three-digit numbers, of black colour against a white background, with height of 9 mm andwidth of 6 mm. If the counters are placed within the protection and control cabinet, it shall bepossible to read at least the total operations counter without the aid of any device.

It shall be possible to indicate the recloser operative position by means of a window bearing theword ABERTO (i.e., OPEN), with white letters against a green background, and the wordFECHADO(i.e., CLOSED), with white letters against a red background, clearly visible from the

ground with naked eyes. The letters shall have a minimum height of 15 mm and a minimumwidth of 6 mm. These words may be shortened to a minimum of 4 letters (ABERand FECH).

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The recloser line terminals shall be of the flat NEMA 2N (2 bores) standard, tin finished, foraluminum or bronze terminal connectors. The minimum tin finishing width shall be 8 m.

Annex Aof this Technical Specification shows a schematic drawing of a round concrete polemounting, typical at CPFL.

5.1.2 Control and Protection System CharacteristicsThe control systems and devices for reclosing, reset, and phases, earth and sensitive-earthovercurrent sensors shall be totally electronic, chosen and/or protected in order to withstand theovervoltages resultant from lightning strokes and the equipment operations, as well as the

temperature within the cabinet where they will be installed (which may reach +60 C).

Power supply for these electronic circuits may depend on rechargeable batteries provided thatthey have a minimum useful life for 5,000 operations or 5 years before replacement. It will notbe accepted non-rechargeable batteries. This power supply shall be independent from theexternal low-voltage secondary distribution grid.

A voltage transformer (VT) shall be used to feed the batteries charger and the other functionsdesigned for the control and protection electronic systems (see Sub-Item 5.1.3 ahead).

These electronic systems shall be placed within a cubicle, box, cabinet or panel for recloserprotection and control, and shall be adequately designed and programmable to allow:

Selection of the number of operations under the fast curve, independent for the phases,earth, and sensitive-earth protection trippings;

Selection of the number of operations under the delayed curve, independent for thephases, earth, and sensitive-earth protection trippings;

Selection of the characteristic time curves, both for phases and earth protection trippings(including sensitive earth);

Selection of reclosing time; Selection of reset time; Selection of tripping currents for phases, earth, and sensitive-earth protections; Operation of recloser by means of a remote command via cable (see ahead);

Blocking of remote command through a switching device with inscripted words LOCAL(LOCAL) and REMOTO(REMOTE), or other indication of easy understanding; Activation and deactivation of earth and sensitive earth protections by means of a switching

device; Indication of the recloser status,ABERTO(OPEN) and FECHADO(CLOSED), by means of

telesignalling through cable: make available free auxiliary contacts;

Every tag, code, identification, instruction, table, and advice text for existing switches, press-buttons, keys, lamps and devices on the recloser panel shall be in Portuguese language. It willbe preferred microprocessor-based controls whose softwares have instructions in Portuguese,including those shown in built-in displays.

The protection and control cabinet shall be adequate for outdoor installation onto the pole,

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sufficiently rigid, sealed, ventilated and appropriate to withstand the normal service conditions,having its own fixing support. To ease access, the cabinet shall be installed below the recloserwith its top no less than 1.5 m and no more than 2.5 m apart (vertical projection). The cabinetshall have an external earth connector, as well as it shall be guaranteed for such purpose itsperfect electric contact with the fixing support. The cabinet shall be installed onto the pole at theopposite side with respect to the recloser.

The cables needed to interconnect the cabinet to the recloser shall be suitably designed,protected against weathering and shielded against interferences, mainly coming fromelectromagnetic surges and transients, in order to avoid undesired recloser operation ormalfunction of its protection and control systems.

It shall be possible to select the recloser minimum tripping value for phase sensors amidst atleast 8 different current magnitudes conveniently distributed, beginning from a minimum up to600 A. Tolerance for actuation shall be 10 % of informed values.

It shall be possible to select the recloser minimum tripping value for the earth sensor amidst atleast 5 different current magnitudes conveniently distributed. Tolerance for actuation shall be10 % of informed values.

Maximum number of openings to recloser operation blocking: 4.

It shall be possible to select the reclosing time among the following values: 0.75; 1.0; 2.0; 3.0;

5.0; 10; 15; and 20 seconds. These figures may vary up to a maximum of 50 %. The setting ofreclosing times shall be independent from each other.

It shall be possible to select the reset time among 5, 10, 15, 20, 30 and 40 seconds. The figuresmay vary up to a maximum of 50 %.

The reset mechanism shall operate automatically. Hence, if the defect that caused recloseroperation disappears before the end of the adjusted operating sequence, the recloser shallclose or remain closed and, after reset time elapses, the control shall go back to its startposition and stay ready for a new operating sequence.

The device for phase, earth, and sensitive-earth overcurrent protection of the recloser shallhave a time-delay protection scheme constituted by time current curves, with at least 2 fastcurves and 3 delayed curves, complying as much as possible with Technical Standard IEC255-4. Time curves shall be of time dependent type and their graphs shall indicate the totaltime for the overcurrent extinction by the recloser (clearing time, as defined by TechnicalStandard ANSI C37.60). For earth protections, part of the curves may be of the definite timetype, provided that the time dependent part begins at most at 20 A. Sensitive-earth protectionshall be of definite time type.

The recloser shall have a restriction device for inrush currents to inhibit its sensitivity to transientcurrents. It shall be possible to adjust such a restriction for up to 12 times the rated phasetripping current, chosen for a determined application, during 0.1 of a second.

It shall be possible the external programming of the recloser protection functions (or other

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eventually supplied) by means of an applications software. For that, the protection and controlcabinet shall be frontally provided with a 9-pin RS 232 serial port, to make possible acommunications interface with a PC type IBM compatible portable microcomputer (laptop ornotebook), using a MicrosoftWindows 98operation system, or later. The software shall makepart of the supply and shall allow adjustments, setting of parameters, setting-up, identification,resetting, reading of set values, current values, memorized failure data, etc. All the records andreadings shall allow capture by the microcomputer for subsequent data treatment and/or reportprinting.

The supply shall include together with each cabinet a serial communications cable (between themicrocomputer and the recloser cabinet). In case of different serial port standards, the specific

converter shall be supplied, including the connecting cable with the microcomputer. Theprotection and control system shall have at least one integrated communications protocol, thatis, the DNP 3.00standard-type.

The protection and control panel shall have capability to take oscillograms and register aminimum of 8 fault events, in a circular memory scheme that gets rid of the most ancientoccurrence, and able to storage events within 3 or more seconds, and adjustable pre-fault timefor at least 5 rated-frequency cycles. Oscillogram data files shall be available in theCOMTRADEstandard. Also, independently on fault oscillograms, the registered event log shallbe capable for at least 128 occurrences.

Furthermore, there shall be enough free space within the panel to accomodate other 2

modules as follows:

18cm X 18cm X 6cm, for trunking radio or mobile telephone modem; 20cm X 14cm X 6cm, for protocol converter or mobile telephone communications module.

Also, it is desirable additional free space for the installation of an auxiliary power supplyconverter, in case the panel does not provide a solution for the voltages needed forcommunication modules operation.

5.1.3 Voltage TransformerThe recloser is specified for operation with a voltage transformer (VT) for power supply of theabove specified electronic systems, for battery charging, and/or for opening and closingoperations. Such a voltage transformer shall be an integrated part of the supply and shallcomply with the following minimum technical characteristics:

Type: single phase, with one secondary winding provided with one tap; Connection group: 1 (connection between phases); Voltage class: 15 kV; Basic insulation level: 110 kV (peak); Rated primary voltages: 11.5 kV and 13.8 kV; Rated secondary voltages: 115 V and 115 V; Rated ratios: 100/120:1; Continuous overvoltage factor: 1.15; System operating voltage range: from 10.5 kV to 14.4 kV.

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All the connections and wiring between the recloser and the voltage transformer are of themanufacturers responsibility and shall comply with the requirements adequate for operationthroughout the life expectancy (outdoor installation, electromagnetic interference, easyassemblage and maintenance, safety, etc.). All the other VT characteristics shall comply withthe Brazilian Technical Standard ABNT NBR 6855.

Should the VT be for outdoor installation, it shall stay on the same recloser structure, subject tothe same service conditions. Thus, its respective support for fixing to the pole shall make part ofthe supply (see Annex B). It is also applicable to the VT what is required in Sub-Item 3.10 Inspection and Testing of this Technical Specification.

5.2 24.2-kV Class RecloserAll the technical requirements and characteristics established above in Sub-Item 5.1for the 15-kV class recloser are wholly applicable, except those details explicitly indicated as follows inSub-Itens 5.2.1through 5.2.3:

5.2.1 Constructive Characteristics

Maximum design voltage: 27 kV (rms value); Rated lightning impulse withstand voltage, for 1.250-s standard wave: 125 kV (peak); Rated power frequency withstand voltage:

- dry, 1 minute: 60 kV (rms value);- wet, 10 seconds: 50 kV (rms value).

The devices for the equipment to perform its operations shall be adequate to indistinctly operateunder the primary-grid rated voltage (23 kV), as well as under the variations of this servicevoltage which range from 20.7 kV to 24.2 kV.

As an information, the pole at which the recloser will be installed will be provided with 2 sets ofdistribution-type 21-kV rated operating voltage lightning arresters, at both sides but at the sameheight as the primary-grid cables (see Annex A), connected to earth by means of a 35-mm2section copper cable, fixed externally onto the pole.

5.2.2 Control and Protection System Characteristics

The device for phase, earth, and sensitive-earth overcurrent protection of the recloser shallhave a time-delay protection scheme constituted by time current curves, with at least 3 fastcurves and 4 delayed curves, complying as much as possible with Technical Standard IEC255-4.

5.2.3 Voltage Transformer

Type: single phase, with one secondary winding; Connection group: 1 (connection between phases); Voltage class: 24.2 kV; Basic insulation level: 150 kV (peak); Rated primary voltage: 23 kV; Rated secondary voltages: 115 V; Rated ratios: 200:1;

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Continuous overvoltage factor: 1.15; System operating voltage range: from 20.7 kV to 24.2 kV.

5.3 Classification DataMaterial codes applicable to the recloser, according to CPFLs distribution utility:

VoltageClass (kV)

Paulista andPiratininga

RGE Santa Cruz Jaguarina

15 50-000-011-210 590210 REL-177 142324.2 50-000-015-476 590030

Choice depends on the use of the recloser at the electrical distribution system and shall complywith CPFLs material codes, according to the Bidding instructions.

5.4 Finishing and PaintingThe metallic or metallized surfaces to be painted shall have necessarily the gray MunsellN 6.5final colour. Should these surfaces be carbon-steel, they shall be submitted to degreasing,scouring and phosphatization or, alternatively, to sand or granulated-steel blasting until near-white metal (degree Sas 2 of the Swedish Standard SIS 05 5900).

Then, they shall receive two or more coats of epoxy-polyamide primer paint, each coat at least30 m thick. The paint finish shall have a minimum of two coats, not less than 30 m thick each,

of gray MunsellN 6.5 synthetic-alkyd or aliphatic-polyurethane enamel. It is also acceptablepolyester-base (outdoor use) or epoxy-base (indoor use) powder-painting, 80 m minimumthickness, in the above-specified colour.

In case the surfaces be galvanized, the first coat shall be a 10-m to 20-m epoxy-isocyanatepaint (shop-primer) layer, after which they shall receive the previously described paint finishing.

The painting final adhesion degree shall not be worse than 1, according to ABNT TechnicalStandard MB 985/1976. CPFL may accept within its own discretion other treatment, finishingand painting schemes that guarantee equivalent quality and performance of that specifiedabove.

5.5 NameplateThe recloser nameplate shall contain indelibly engraved at least the following information:

Manufacturers name; The words (in Portuguese) RELIGADOR AUTOMTICO (that is, automatic circuit recloser); Type, as designated by the Manufacturer; Manufacturing serial number; Indication of adopted Technical Standard and its date of issue; Manufacturing year; Rated voltage, current and frequency; Basic insulation level;

Rated symmetrical interrupting current;

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Should the recloser make use of SF6gas, a warning plate shall be attached to it and shall bearthe minimum admissible operating pressure.

5.6 Recloser IdentificationIndependently on the nameplate, each recloser shall be conveniently identified by painting atfactory with their individual asset number furnished by CPFL. The numbers will be 5-digit,neglecting any zeroes at left. Painting shall be legible and indelible through the recloser lifetime.Such a requirement applies also when the recloser undergoes total maintenance oroverhauling, whatever the supplier of these services.

As a rule, the digits shall be in black colour, be 60-mm high and 50-mm wide, and be displayed

side-by-side in their making. The number shall preferably painted on the recloser face oppositeto the pole, when fixed, or laterally, but always so as to be visible from the ground when theequipment is mounted in its operative position.

6. FORM

6.1 Technical Characteristics by the Time of BiddingThe characteristics required below shall be informed in these data sheets by the responsibleBidder, taking into account what is written in Sub-Item 3.3 Technical Bidding of thisTechnical Specification. The information shall be guaranteed by the Bidder, being his soleresponsibility its truthfulness and applicability to the equipment herein specified.

In case of Bid adjudication and after issue of the respective Purchase Order (P.O.) it will not beallowed, whichsoever hypothesis, modifications to the characteristics and information hereindeclared (and, if the case, clarified later for acceptance).

Filling out of the required data and information shall be such that it renders perfectlyunderstandable to which offered recloser voltage class they refer, as applicable (that is, for 15-kV and/or 24.2-kV distribution grids).

1) Manufacturers and/or Suppliers name:

2) Bid data (by item offered, if the case):

2.1) CPFLs Competitive Bidding number and date:2.2) Supplers Bid reference number and date:2.3) Quantity of recloser units:

3) Type or model of recloser:

4) Arc extinguishing medium:

5) Insulating medium:

6) Rated frequency (Hz):

7) Rated operating voltages (kVrms):

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8) Maximum voltage (kVrms):

9) Lightning impulse withstand voltage for 1.250-s standard wave (kVpeak):

10) 60-Hz power-frequency withstand voltage (kVrms):10.1) Dry, 1 minute:10.2) Wet, 10 seconds:

11) Rated continuous current (Arms):

12) Rated symmetrical interrupting current at maximum voltage (kArms):

13) Rated interrupting capabilities (Arms) at maximum voltage, without reignition or restrike:13.1) For no-load overhead lines:13.2) For no-load cables:13.3) For small inductive currents:

14) Maximum electrical contact resistance ():

15) Maximum radio-influence voltage (V):

16) Maximum partial discharge level (pC):

17) Maximum interrupting time (ms):

18) Opening time (ms):

19) Arcing time (ms):

20) Closing time (ms):

21) Simultaneity among poles for three-pole opening and closing (ms):

22) Phase-sensors tripping currents:22.1) Values (A):22.2) Respective tolerances (%):

23) Earth-sensor tripping currents:23.1) Values (A):23.2) Respective tolerances (%):

24) Reclosing times:24.1) Values (s):24.2) Respective tolerances (%):

25) Reset times:

25.1) Values (s):25.2) Respective tolerances (%):

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26) Maximum number of openings for reclosing blocking:

27) Time x current curves (send graphs):27.1) For phase protections:27.2) For earth protection:27.3) For sensitive earth protection:

28) Voltage transformer characteristics:28.1) Manufacturer and manufacturing type or model:28.2) Connection group:

28.3) Rated primary and secondary voltages:28.4) Basic insulation level:28.5) Rated ratios:28.6) Continuous overvoltage factor:28.7) Rated accuracy class and burdens:28.8) Thermal rating (VA):

29) Lengths, widths and heights (mm):29.1) For the recloser:29.2) For the protection and control panel:29.3) For the voltage transformer:

30) Weights (kgf):30.1) Of the recloser, assembled for operation:30.2) Of the panel:30.3) Of the voltage transformer:30.4) Of SF6gas for normal operation (if applicable):

31) SF6gas pressures referred to +20 C, if applicable (kgf/cm2or bar):

31.1) Operative normal:31.2) Operative minimum:31.3) Is there full insulation to maximum operating voltage across open contacts in recloser with

SF6gas as the arc quenching medium upon total loss of positive pressure of this gaswithin the interruption chamber?

32) Recloser line terminals:32.1) Type:32.2) Material:

33) Earth connectors: inform manufacturer, type, material and cable range (mm2 or AWG) for:33.1) The recloser:33.2) The protection and control panel:33.3) The voltage transformer:

34) Inform the recloser maximum number of operations for its maintenance for respectively 5,

10, 15 and 20 times its rated current:

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35) Inform the maximum distance (vertical projection, in millimetres) that the top of theprotection and control panel may stay below the base of the recloser, taking into accountthat they will be installed at opposite sides onto the pole:

36) Inform the applicable Technical Standards for the type of recloser offered, as well as for itsmain components:

37) List of the tests that will be carried out on the recloser now being bid, and on its maincomponents, according to Sub-Item 3.10 Inspection and Testingof this TechnicalSpecification, and the places where they will be held as well (either own or third partyinstallations) and the referred to Technical Standards: Include an appropriate annex to the

Technical Bid.

7. ANNEXESThe following annexes make an integrated part of this Technical Specification:

Annex ATypical Recloser Mounting on Round Concrete PoleAnnex BDetail of Equipment Support for Pole Mounting

8. REVISION NOTICEThis specification was revised with the collaboration of the following professionals of CPFLEnergias companies:

Company ProfessionalCPFL Paulista eCPFL Piratininga

Enas Bittencourt Pinto

CPFL Santa Cruz Amaury HagaRGE Olavo ArndtCPFL Jaguarina Carlos Eduardo Pansiera Persinoti

Alterations proceeded:

Previousversion

Date of previousversion

Alterations with respect to the previous version

1.4 Feb 15th, 2006 Document unified for CPFL Paulista, CPFL Piratininga, CPFLSanta Cruz, RGE e CPFL Jaguarina.

/

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ANEXO A Typical Recloser Mounting on Round Concrete Pole

TRANSFORMER

SWITCH

LIGHTNING

SOURCELOAD

ARRESTERS

VOLTAGE

RECLOSER

PANELCONTROL

BYPASS

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N D t C t i V A d D t P bli P i

ANNEX B Detail of Equipment Support for Pole MountingThe following drawing applies both for the recloser and the voltage transformer supports.Eventually, the support may be a single one, that is, contains both equipment.

Independently on the solution provided by the supplier, the parts of the support aimed to befixed to the pole shall be as shown, that is, each of them, one at the upper position and theother at the lower position, shall be a flat-shaped piece vertically placed, with dimensions andboring shown (in millimetres), onto which will be screwed CPFLs pole fixing system.

Thus, to ease field mounting, the supplier shall leave a minimum space between this flat-shaped piece and the body of the support enough for the introduction of M16 X 50 mm square-

head bolts, with respective nuts and pressure washers.

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15kV and 24.2kV Class Automatic Distribution Recloser GED 823 25022008

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Transcript of 15kV and 24.2kV Class Automatic Distribution Recloser GED 823 25022008