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HomeMy WebLinkAboutResolution - 1280 - Contract - Mcgraw-Edison - 2 Substation Transformers - 12/09/1982:cl RESOLUTION 1280 - 12/9/8, �Q ! CITY !3E'CPE.TARY-TREASIAER RESOLUTION IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF LUBBOCK: THAT the Mayor of the City of Lubbock BE and is hereby authorized and di- 'ected to execute for and on behalf of the City of Lubbock a Contract between [cGraw-Edison and the City of Lubbock for purchase of two (2) 15/20/25 MVA ubstation transformers with voltage ratings of 115KV/69KV/12470, attached .erewith which shall be spread upon the minutes of the Council and as spread pon the minutes of this Council shall constitute and be apart of this Reso- ution as if fully copied herein in detail. "assed by the City Council this 9th day of December 1982. ew- A6WIHENRK,—Mayo? o Tem ATTEST: lyn Gaf f ga, ity e,< PROVED AS TO CONTENT: J McDonald,'Director AS TO FORM: Treasurer a+iccLitt V L.L11Laeb , Assistant City Attorney V BID #7020 PROPOSAL P-98904 Sheet.1 MAILED TO VENDOR 9-24-82 CLOSE: 11-1-82 ADDENDUM #1 The attached should be added to the "Power Transformer's Specifications", to be used as the pricing sheet. ITEM 1. 2. QUANTITY DESCRIPTION 2 15/20/25 MVA substation transformers rated at 69 KV/12470 volts. IIAITT DDTrc $ 212,197 each TOTAL PRIi $ 424,394 Qty. 2 2 (Alternate Bid) Same as Item #1 except $ 221,448 $4423896 voltage ratings to be 115 KV/69KV/12470 each Qty. volts. h Item #1 and #2 to meet or exceed LP&L Specification #SE -0013-092382. THANK YOU, FLOYD P. NESBITT DIRECTOR OF PURCHASING PLEASE RETURN ONE COPY WITH YOUR BID. cc: FPN/sp NOTES: 1. Shipment will be made 24 weeks after receipt of an order at Canonsburg, Pa. 2. Prices are firm for shipment 24 weeks after receipt of an order. 3. This proposal is subject to acceptance within 30 days. 4. Terms of payment are net 30 days from receipt of invoice with a 12% per month charge on late payments. 5. Prices are based oti delivery F.O.B. railroad siding nearest destination accessible by direct rail movement at time of shipment. 6. Quoted prices include the cost of oil freight. -i 4AIX 497""/2 C-1VARCes /TGR D'L. 7. For our service policy clause, see Sheet 3. £ •7• 8. These units will be shipped with bushings, radiators, fans, oil, and miscellaneous accessories removed. e MOGRA Y LDISON PROPOSAL P-98904 Power Systems Division Sheet 2 McGraw -Edison Company Canonsburg' PA 15317 STANDARD TERMS AND CONDITIONS OF SALE Quotation Constitutes Seller's Offer: This quotation, including the within terms and conditions of sale, constitutes Seller's offer to sell solely in accordance with the exact terms set forth. Any order for the equipment described in the quotation or directions to Proceedwith engineering, procurement, manufacture or shipment shall constitute assent to the within terms and conditions of sale and a representation that the Purchaser is f solvent. Any additional or different conditions set forth in any communication from the Purchaser are hereby objected to by Seller and shall not be effective unless assented to in writing by an authorized representative of Seller. Supersedes Previous Agreements: This quotation supersedes all previous written or oral quotations and/or agreements. Waiver: The waiver by Seller of any term, provision or condition hereunder shall not be construed to be a waiver of any other term, condition or provision hereof, nor shall such waiver be deemed a waiver of a subsequent breach of the same condition or provision. Discrepancies in Take -offs: This quotation may be based on Seller's interpretation of plans and specifications submitted to Seller by Purchaser. Seller recommends that Purchaser check this quotation both as to quantities and specifications of the material listed. Any discrepancies should be called to Seller's attention immediately, so any change, if necessary, can be made. Acceptance: Quotations are void unless accepted in writing within thirty (30) days from date of quotation. Prices quoted may be withdrawn or changed by Seller at any time prior to receipt of acceptance by Seller. All acceptances to this quotation are received subject to Federal Regulations and/or Government Priorities, if any, and are subject to final approval and acceptance by Seller at its Home Office, and any contract resulting therefrom shall be construed under the laws of the Commonwealth of Pennsylvania. Corrections After Acceptance: After acceptance quotations are subject to change for correction of stenographic or clerical errors. Should Seller exercise its right n make such changes it shall ice of such notify Purchaser of the changes made. Purchaser may thereafter revoke his acceptance of the quotation within ten of S days of receipt of notice of such changes. Failure of Purchaser to revoke its acceptance within such period shall be deemed to constitute acceptance of Seller's changes. Changes in Specifications: Changes or revisions desired by Purchaser from specifications upon which the quotation had been made, shall be charged and paid for by Purchaser at Seller's applicable rates therefor, and the time for performance on the part of Seller shall be extended to cover time lost and/or additional work involved and time required for making any such requested changes and/or revisions. Terms of Payment: Net — Thirty (30) days from date of invoice. All accounts are payable in U.S.A. funds, at par. If shipment is delayed by any cause for which the Seller is not responsible, the date of completion of the equipment, or any part thereof, shall be regarded as the date of shipment thereof, and an invoice will be issued accordingly. Equipment held for the Purchaser shall be at the risk and expense of the Purchaser. Acceptance of orders and shipments and deliveries shall be subject to approval of Seller's Credit Department. If, in the judgment of Seller, the financial condition of the Purchaser, at any time, does not justify the continuance of the work to be performed by the Seller hereunder on the terms of payment agreed upon, the Seller may require full or partial payment In advance or shall be entitled to cancel any order then outstanding and shall receive reimbursement for its reasonable and proper cancellation charges. In the event of bankruptcy or insolvency of the Purchaser, or in the event any proceeding is brought by or against the Purchaser under any bankruptcy or insolvency laws, Seller shall be entitled to cancel any order then outstanding at any time during the period allowed for filing claims against the estate and shall receive reimbursement for its reasonable and proper cancellation charges. The rights of the Seller under this paragraph are cumulative and in addition to all rights available to the Seller at law or in equity. Delivery: Unless otherwise specifically stated herein, delivery is to be made f.o.b. shipping point. Purchaser shall assume all risk of loss after the equipment is delivered as specified herein. Taxes: Seller's prices do not include sales, use, excise, or similar taxes applicable to the equipment or the sale or use thereof. All such taxes, if any, shall be paid by Purchaser, or in lieu thereof Purchaser shall provide Seller with a tax -exemption certificate acceptable to the taxing authorities. Shipment: Shipment dates are computed from the date Seller receives acceptance with complete specifications and/or drawing approval as required. Seller will take all reasonable action to maintain the shipping dates given herein, but Seller shall not be liable for delays in delivery or in performance or failure to manufacture or deliver due to causes beyond its reasonable control including, without limitation,acts of God, acts of the Purchaser, acts of civil or military authority, priorities, fires, strikes or other labor disturbances, floodsepidemics, war, riot, delays in transportation or car shortages, or inability to , obtain necessary labor, materials, components or manufacturing facilities. In the event of such delay, the date of delivery or of performance shall be extended for a period equal to the time lost by reason of the delay. Inspection, Acceptance: Quotations and acceptances are made on the basis that where Purchaser is to inspect, inspection and acceptance of equipment shall be made at Seller's factory, prior to shipment. Warranty: Seller warrants to Purchaser that the goods delivered hereunder will be free from defects in material or workmanship and will be the kind and quality specified in the acceptance. ! This warranty shall apply only to defects appearing within one (1) year from the date of shipment by Seller. If Seller installs the equipment or supplies technical direction of installation by contract, the warranty shall be for a period of one (1) year from date of completion of field erection, but not exceeding eighteen (18) months from date of shipment. Seller shall, in complete fulfillment of its liabilities under this warranty and if given prompt notice by Purchaser, correct, by repair or replacement at Seller's option, f.o.b. its factory, any defect which shall appear under proper and normal use of its equipment within one (1) year after date of shipment or within one (1) year after the completion of field erection of the equipment if Seller installs the equipment or supplied technical direction of installation by contract, but not exceeding eighteen (18) months from date of shipment. The liability of Seller under this warranty (except as to title), or for any loss or damage to the equipment whether the claim is based on contract or negligence, shall not in any case exceed the cost of correcting defects in the equipment as herein provided and upon the expiration of the warranty period all such liability shall terminate. The foregoing shall constitute the exclusive remedy of Purchaser and the exclusive liability of Seller. The foregoing warranty is exclusive and in lieu of all other warrantieswhether written; oral, implied or statutory (except as to title). NO WARRANTY OF MERCHANTABILITY OR OF FITNESS FOR PURPOSE SHALL APPLY. Seller does not warrant any equipment of other manufacture designated by Purchaser. Supervision of Installation: Unless otherwise provided for herein, Seller will neither install nor supervise the installation of the equipment, but the same shall be done by and at the expense of Purchaser. Tests: The conditions of any test shall be mutally agreed upon and Seller shall be notified of, and may be represented at, all tests that may be made. Protection Against Infringement: Seller agrees that it will, at its own expense, defend any suits which may be instituted by any party against Purchaser for alleged infringement of United States Patents relating to the equipment of its own manufacture furnished hereunder, as used in the regular course of Purchaser's business, provided Purchaser shall have made all payments then due hereunder, and gives to Seller immediate notice in writing of such suits and permits Seller to defend the same, and gives all needed assistance and authority to enable Seller so to do, and thereupon, in case of a final award of damages in such suit Seller will pay such award, but Seller shall not be responsible for any compromise made without its written consent, nor shall it be bound to defend any suit or to pay any damages therein when the same shall arise by reason of the use of parts not furnished by Seller hereunder. In the event that the use of said equipment is enjoined, Seller, if unable within a reasonable time to secure for Purchaser the right to continue using the said equipment will, at its own expense, either replace the said equipment with noninfringing equipment, or modify the said equipment so that the same becomes noninfringing or remove the enjoined equipment, and refund the sums paid therefor. The foregoing states the entire liability of Seller for patent infringement by said equipment or any part thereof. Seller assumes no liability whatever for patent infringement of any equipment or part thereof manufactured to Purchaser's design. Limitation of Liability: Seller's liability for any claim of any kind (except "Protection Against Infringement") shall not exceed the purchase price of equipment, or portion thereof, which gives rise to the claim, whether such claim shall be for breach of contract, breach of warranty or negligence and whether such claim arises out of or results from this contract, or from the design, manufacture, sale, delivery, resale, installation, technical direction of installation, inspection, repair, operation or use of any equipment furnished under this contract. Seller shall not be liable in any event for special or consequential damages including, but not limited to, loss of profits or revenue, loss of use of equipment or any associated equipment, cost of capital, cost of substitute equipment, facilities or services, downtime costs, in and out costs, or claims of customers of Purchaser for such damages. Special Containers: In the event Seller furnishes material requiring containers (such as oil barrels, drums, reels, etc.) or tarpaulins or other special covering, an extra charge will be made for such containers and/or covering, and Purchaser shall pay the amount thereof, but refund, if and when specifically agreed upon at time of purchase, will be made if such containers and/or covering are returned, at expense of Purchaser, in good condition, within four (4) months from the original date of shipment, to the proper receiving point to be designated by Seller, charges prepaid by Purchaser; provided, however, that invoice or memorandum and necessary shipping documents are promptly forwarded to Seller. Cancellation: After receipt of Purchaser's acceptance to this quotation, the same may, upon fifteen (15) days notice in writing be cancelled by the Purchaser, in whole or in part at any time, not later than ninety (90) days prior to the date scheduled for shipment of the particular equipment for which cancellation is desired, but only upon the written consent of Seller and upon terms providing for payment to Seller of a cancellation charge satisfactory to it which shall take into proper account the work already done, facilities and material acquired, and/or commitments made by Seller, and lost profits. ^ Assignment: Purchaser shall not assign this quotation or any acceptance of this quotation, or any rights therein or thereunder, without the written f consent of Seller, in each case. Scope: No salesman or other party is authorized to bind Seller by any agreement, warranty, statement, promise or understanding not herein expressed, and no modifications hereof shall be binding on Seller unless the same are in writing and either executed and/or approved in writing by an executive officer, Product Marketing Manager, or Service Manager of Seller. Other Laws: Any clause required to be included in a contract of this type by any applicable law or administrative regulation having the effect of law shall be deemed to be incorporated herein. Seller represents that with respect to the production of the articles and/or the performance of the services covered hereunder, it has fully complied with Section 12(A) of the Fair Labor Standards Act of 1938, as amended. Acceptance and execution of orders accepted by reason of any law or administrative regulation having the effect of law, or in order to carry out the intent or purpose of any such law or regulation or to acquiesce in a request by a government agency or official thereof, or contingent upon the continuation in effect of such law, regulation or request, may be cancelled by Seller upon the expiration or withdrawal or such law, regulation or request, provided, however, that Seller, at its option, may complete such order. CP102 REV 12-77 ' PROPOSAL - P=98904 R MCGAW EOISON COMPANY SHEET Power Systems Division 3 POWER TRANSFORMER SERVICE POLICY Qualified, factory -trained McGraw -Edison servicemen completely familiar with all construction details and fully capable of supervising the erection of power trans- formers are available to the purchaser on either a charge or a no -charge basis. Using the services of these erection engineers will assure the purchaser that all equipment is in good working order and properly installed. The following state- ments define the McGraw Edison Company Power Systems Division policy for furnishing erection engineers for power transformers. Whether on a charge or a no -charge basis, the services of an erection engineer must be requisitioned by the purchaser. A minimum of three weeks lead time is required in each case. An erection engineer will be furnished on a no -charge basis for the maximum days specified per transformer when any of the following conditions are met: f1 The unit represents the first order by a customer or a customer's operating division for a McGraw -Edison LTC transformer, 3 phase step -voltage regulator, or regulating transformer utilizing an LTC switch mechanism. The minimum nameplate KVA rating is above 25000 KVA for two -winding trans- formers without LTC equipment. �. The minimum nameplate KVA rating is above 20000 KVA for two -winding trans- formers with LTC equipment.. The equivalent KVA of parts is above 25000 KVA for autotransformers. This will be less than the nameplate KVA rating. X The high voltage is rated 230 KV or higher. If the transformer qualifies under Item 1, 2, 39 4 or 5 above, the maximum number of consecutive days of service at no charge will be in accordance with the schedule shown in the table below. (Travel time will not be counted toward total service time). Type of Unit LTC Transformers, smaller than 20000 KVA LTC Transformers, 20000 KVA and larger 3 Phase Step -Voltage Regulators and Regulating Transformers Transformers Without LTC 25,000 KVA and smaller Days of Service at No Charge 4 days (first unit only) 4 days 1 day (first unit only) 3 days (first unit only) Transformers Without LTC 4 days Larger than 25,000 KVA All services required in excess of the number of days specified in the above table will be invoicedd� at the standard rate per day. a xv G�� Form ioo 1{ / _ '% a0 �Gt/ G 10/76 MCGRANDISON Power Systems Division McGraw -Edison Company Canonsburg, PA 15317 PROPOSAL P-98904 Sheet 4 ITEM NO. 1 PERFORMANCE SPECIFICATIONS FOR TRANSFORMERS For..... CITY OF LUBBOCK, ,TEXAS..........................................Date... 10[22/ ...... RATING Applied Voltage - to other windings and to ground H Winding 230 X Winding 34 H Winding FC no load taps — Type CORE Class H Winding X Winding Y Winding Phase 3 OA FA FA 15000X67791 v 12470 Wye v v C cles 60 OA 15000 kva 15000 kva kva Temp. Rise 55-E FA 20000 kva 20000 kva kva Insul. Liquid OIL FA 25000 kva 25000 kva kva ADDITIONAL TAP VOLTAGES Applied Voltage - to other windings and to ground H Winding 230 X Winding 34 H Winding FC no load taps — 120750/117875/112125/109250 Induced Voltage & 70600/69228/66353-7649-17 X Winding LTC plus/minus 10% in 32---5 8% steps, FC RC No Load Total Line 110 110 CONNECTIONS FOR OPERATION 110 110 Y Line Transformers in Bank To Transform From Phase. Connected To Transform To Phase I Connected ONE 115000V 1 3 DELTA 12470V 3 WYE 67791V 3 DELTA DIELECTRIC TESTS - Kv Applied Voltage - to other windings and to ground H Winding 230 X Winding 34 Y Winding Bushing Induced Voltage Line to Line 230 at HV Line to Ground BASIC IMPULSE LEVEL - Kv Tank and Fittings Loadiniz Basis For Data Winding Bushing H Line 550 X 350 550 H Neutral % Exc. I No Load Total Line 110 110 X Neutral 110 110 Y Line 15000 110 0.6 PERFORMANCE DATA -- Corrected To 75 C For 55-C Ratings or 85 C for 65-C Ratings Tank and Fittings Loadiniz Basis For Data Exciting Current Losses -- Watts Regulation Kv Kva % Volts % Exc. I No Load Total % PF % Regulation H Winding 115.0 15000 100 0.3 18700 57300 100 X Winding 15000 110 0.6 25200 80 Y Winding (E) 334 I MECHANICAL DATA I Not for Construction Purposes Outline Dwg. No. 68000 Tank and Fittings 39500 Oil ( 9955 Gallons) ASSEMBLED SHIPPED Dimensions -Approximate Inches 182200 Height (A) 242 18 Width (B) 228 228 Depth - Assembled (C) 180 - Stripped 126 Height - Stripped (D) 182 Untanking (Plus Slings) (E) 334 Weights -Approximate Pounds Core and Coils 68000 Tank and Fittings 39500 Oil ( 9955 Gallons) 74700 Total Weight 182200 Shipping Weight Without oil 100300 C P203-6/74 IMPEDANCE VOLTS - % Windings Kva Base % IZ Positive Sequence H to X 15000 9.7 H to Y XtoY Zero Sequence 1 4 -1 — AUXILIARY LOSSES Transformer Kva Class Watts Loss 20000 FA 1200 25000 FAs 2400 AVERAGE SOUND LEVEL NEMA THIS FORM IS INCOMPLETE WITHOUT FORM CP204. Prepared by .................................. MCORANDISON PROPOSAL P-98904 Sheet 5 ITEM Nn 1A Power Systems Division McGraw -Edison Company /� Canonsburg, PA IS317 f PERFORMANCE SPECIFICATIONS FOR TRANSFORMERS For....... CITY OF LUBBOCK, TEXAS 10/22/82 . .... ..........................................Date... ...... RATING Applied Voltage - to other windings and to ground H Winding FC no load taps — 70600168800/65200/63400 Type CORE Class H Winding X Winding Y Winding Phase 3 OA/FA/FA 67000Delta v 12470 Wye v v Cycles 0 OA 15000 kva 15000 kva kva Temp. Rise 55uC FA 20000 kva 20000 kva kva Insul. Liquid OIL FA 25000 kva 25000 kval kva. ADDITIONAL TAP VOLTAGES Applied Voltage - to other windings and to ground H Winding FC no load taps — 70600168800/65200/63400 X Winding LTCplus/Minus 10% in 32---5/8% steps FC/RC Induced Voltage Line to Line x normal CONNECTIONS FOR OPERATION 110 Transformers in Bank To Transform From Phase Connected I To Transform To Phase Connected ONE 67000V 3 DELTA 12470V 3 WYE Y Winding — 4 -1 DIELECTRIC TESTS - Kv Applied Voltage - to other windings and to ground H Winding 140 X Winding 34 Y Winding 350 350 Induced Voltage Line to Line x normal Line to Ground BASIC IMPULSE LEVEL - Kv Loading Basis For Data Winding Bushing H Line 350 350 H Neutral % Exc. I No Load Total % PF % Regulation Line110 110 X Neutral 10 0 Y Line 0.6 18500 80 PERFORMANCE DATA - - Corrected To 75 C For 55-C Ratings or 85 C for 65-C Ratings Loading Basis For Data Exciting Current Losses -- Watts Regulation Kv Kva % Volts % Exc. I No Load Total % PF % Regulation H Winding 67 15000 100 0 60000 100 X Winding 12.47 15000 110 0.6 18500 80 Y Winding Width (B) I MECHANICAL DATA Not for Construction Purposes Outline Dwg. No. Windings Kva Base % IZ Positive Sequence H to X 15000 10.5 H to Y ASSEMBLED SHIPPED Dimensions -Approximate Inches Height (A) 197 167 Width (B) 165 165 Depth - Assembled (C) 160 - Stripped 104 Height - Stripped (D) 167 Untanking (Plus Slings) (E) 306 Weights -Approximate Pounds Core and Coils 59900 Tank and Fittings 28900 Oil (, 4450 Gallons) 33400 Total Weight 122200 Shipping Weight without oil 78400 C P203-6/74 IMPEDANCE VOLTS Windings Kva Base % IZ Positive Sequence H to X 15000 10.5 H to Y XtoY Zero Sequence AUXILIARY LOSSES Transformer Kva Class Watts Loss 20000 FA 1200 25000 1 FA 2400 AVERAGE SOUND LEVEL NEMA THIS FORM IS INCOMPLETE WITHOUT FORM CP204. Prepared by .................................. Power Transformers Performance Specifications RATING The voltage ratings are based on the turn ratio. The ratio of voltages will be subject to the effect of regulation at various loads and powerfactors. The kva rating is based on rated secondary voltage maintained by impressing on the primary winding the voltage necessary to compensate for the effect of regulation of the transformer. The transformer will be designed to deliver rated kva at 5% above rated voltage (80% power factor or higher) and to oper- ate at 10% above rated voltage at no-load, without exceeding the specified tempera- ture rise. TEMPERATURE RISE The temperature rise, measured by in- crease in resistance (corrected to instant of shutdown) and by thermometer, is based on test conditions listed below ap- plying to the classes of transformers covered by these specifications. 1. Oil -immersed, self -cooled (Class OA) and forced -air-cooled (Class OA/FA, OA/FA/FA) and forced -oil -and -air- cooled (Class OA/FA/FOA, OA/FOA/FOA and FOA). At a n am bient temperature of any value between 10 C and 40 C, and at an altitude not exceeding 3300 ft (1000 m). 2. Water-cooled (Class OW) and forced - oil -and -water-cooled (Class (FOW). With ingoing water temperature of any value between 20 C and 30 C. NOTE: Water-cooled (OW) and forced - liquid -cooled (FOW and FOA) transformers are not designed to be excited without arti- ficial cooling. BASIC IMPULSE LEVEL 1.2 x 50 psec full -wave crest kv. DIELECTRIC TESTS 1. Applied -Voltage Test • One min. 2. Induced -Voltage Test • At lowest practicable frequency. For 7200 cycles when tested at 120 hz or higher or for 60 sec when tested below 120 hz. July 1981 * Supersedes 12/75 PROPOSAL P-98904 MCGRAMISON Sheet 6 Power Systems Group LOSSES (Total losses are the sum of the excitation losses and the load losses) 1. At rated frequency, voltage and kva. Losses will be measured by wattmeter; no-load losses will be corrected to a sine -wave voltage basis and load losses will be corrected to 75 C for 55 C ratings or 85 C for 65 C ratings. 2. The average losses of all transformers of the same rating tested on an order will not exceed specified values. The tested losses of individual transformers tested on any order may exceed spec- ified values by not more than 10% of the no-load losses and by not more than 6% of the total losses. If only one single- phase transformer is on order, the above tolerances apply. If only one three-phase transformer is on order, no tolerances apply. PERCENT REGULATION 1. Based on rated voltage, kva, and fre- quency, corrected to 75 C for 55 C rat- ings, or 85 C for 65 C ratings. 2. The transformer regulation, computed from the impedance volts and imped- ance watts measured by wattmeter, may exceed the specified regulation at specified power factors by not more than 71/2% for two -winding transformers or 10% for three -winding transformers and autotransformers. TESTS 1. All tests will be made in accordance with the ANSI Standards Test Code C57.12.90. 2. The procedure in making the tests will be in accordance with testing practices of the McGraw -Edison Company, Power Systems Group. OVERLOAD CAPABILITY McGraw -Edison designs all power trans- formers for normal operation at loads up to the maximum nameplate rating. Operation at loads exceeding the maximum name- plate ratings can result in excessive ther- mal degradation and insulation gassing. These effects—separately or combined— can shorten the expected life of the transformer. CP204 Thermal degradation, which proceeds normally at rated load, is accelerated at higher overload temperatures. The result- ing cumulative loss of life described in ANSI C57.92 and NEMA TR -98 reduces the inherent ability of the transformer to withstand the abnormal physical effects associated with through -faults and other system disturbances. Insulation gassing is caused by exces- sive winding temperatures resulting from overloads. This effect—described in IEEE Papers F-79-170-2 and A-79-434-2—is due to a rapid thermal decomposition of the cellulose. The formation of gas bubbles produces a short-term reduction in the insulation strength. This effect can signifi- cantly impair the ability of the transformer to withstand electrical transients during overload and may persist at operating voltage even though the system has returned to normal. McGraw -Edison design practices in- clude the choice of ancillary equipment based upon the premise that emergency short -time overloads may be unavoidable. The loading limitations recommended in the Loading Guides should not be ex- ceeded because of the long-term thermal effects on transformer life. In addition, the temperatures of the hottest -spot winding conductors should not exceed 140 C with- out recognizing the consequence of insu- lation gassing. It is recommended that any emergency overload be limited to 150% of maximum nameplate rating. On trans- formers which encounter loads exceeding 125% of the maximum nameplate rating, a combustible gas analysis should be per- formed as described in ANSI/IEEE C57.104-1978. The risk involved when transformers are overloaded is the responsibility of the user. McGraw -Edison will accept a share of this risk only during the warranty period. PROPOSAL P-98904 SHEET 7 MGGRANDISON PowerS=ms Group McGrawEdiaon Company CITY OF LUBBOCK, TEXAS EXCEPTIONS 1. Reference General Condition B and page 4, paragraph 2.8. The transformers will be warranted for a period of one (1) year after date of completion of field erection, but not to exceed 18 months after shipment from the factory. McGraw -Edison does not assume liability for consequential damages in no event shall be held liable for more than the cost of the equipment sold. Full warranty may be extended to 30 months after shipment for a price addition of one percent (1%) or extended to 42 months for a price addition of three percent (3%). It is our policy not to extend beyond 42 months. If our warranty under this contract is to include, in addition to the equipment repair or replacement cost, the direct cost of: a. Removing a transformer from service, b. Transportation of unit to and from factory and, c. Reinstallation on the site, _A price addition of two percent (2y) will apply. (The total amount of our liability under a, b, and c, above, will be limited to 10% of the price of the warranted apparatus. Expense of removing adjacent structures, costs of temporary service, etc., is not included.) NOTE: This warranty will apply only for the period 12 months after date of completion of field erection, but not to exceed 18 months after shipment from the factory. 2. Reference page "B". Weuii;ll accept the late delivery penalty clause option provided that the total reduction of the contract price shall be limited to 10%. 3. Reference page 2, paragraph 2.3. ,:.Mechanical -approval drawings will be provided 8-10 weeks ARO. Electrical approval drawings will be provided 4 weeks after return of approved mechanical drawings. 4. Reference page 4, paragraph 2.7. We will pay the penalty for exceeding loss guarantees per page 7.A paragraph 2.24 rather than correcting for exceeded losses per the referenced paragraph, provided that we meet the guaranteed temperature rise. Form 100 PROPOSAL P-98904 SHEET 8 MCGRAMDISON Power Systems Group McGrow-Edison Company CITY OF LUBBOCK, TEXAS EXCEPTIONS continued... 5. Reference page 8, paragraph 2 & 4. Please note on our performance specification sheet for Item 1 that our design requires that the rated voltage be 115000 X 67791 volts with the no load taps on the 69 KV connection of 70600, 69228, 66353, and 64917. 6. Reference page 9, paragraph 8. We will furnish 115 KV, 550 KV BIL high voltage bushings only. The 69 KV, 350 KV BIL high voltage bushings will not be furnished. 7. Reference pages 14-15, paragraph 3.15. We will furnish insulating oil to be shipped separate from:the transformer via tank truck. loorm ,too MOORAMISON Proposal P-98904 Power Systems Division Sheet 9 McGraw -Edison Company NOTE: THIS DRAWING SHOWS GENERAL CONSTRUCTION ONLY. III B3 -B2 B� � I iGo E)0 0 i I I i C I 1 CP245-10/72 NOTES: 1. For Item 1, the low voltage sidewall mounted bushings will be located in segment 1, the radiators will be located in segment 3, and the LTC switch will be located in segment 4. 2. For Item 1A, the LTC switch will be located in segment 1 as shown, radiators will be located in segment 3, and the low voltage sidewall mounted bushings will be located in segment 4. 3. Lightning arrester mounting brackets will be furnished. PROPOSAL P-98904 SHEET 10 MCGRANDISON PowerSystems Group McGraw -Edison Company TRANSFORMER/BREAKER OIL The highest grade of transformer/breaker oil obtainable from the most reliable major oil companies is used by the McGraw -Edison Power Systems Division for insulation and for transferring heat from the core and coils to the heat dis- sipating surfaces of the tank, radiators and other associated components. McGraw -Edison Power Systems Division oil is a pure, unblended mineral oil obtained by fractional distillation of petroleum, prepared and refined especially for use in transformers and breakers. Suppliers meeting this specification warrant that their oil does not contain PCBs. Careful testing of each oil shipment insures uniform high quality. A water -in -oil meter located at the discharge end of the factory oil system filter press provides assurance that only oil with maximum dryness enters McGraw -Edison transformers and breakers. All oil must conform to or exceed the specifications given in ANSI/ASTM #D3487 which includes, but is not limited to, the following: PROPERTY ASTM METHOD TEST LIMITS Flash Point D-92 .1450C Min. Viscosity - cSt/SUS at 1000C D -445/D-88 3.0/36 Max. at OOC D -445/D-88 76.0/350 Max. Specific Gravity - 150C D-1298 0.91 Max. Pour Point D-97 400C Max. Dielectric Strength D-877 30 KV Min. Neutralization Value, mg KOH/g D-974 0:03 Max. Color D-1500 0.5 Max. Interfacial Tension at 250C D-971 40 Dynes/cm Min. Power Factor at 250C D-924 0.05 Percent Max. Corrosive Sulfur D-1275 Noncorrosive Water Content D-1533 or D-1315 35 ppm, Max. NOTE: If specified, though not recommended, 0.15 percent (by weight) DBPC inhibitor will be added to oil. 3/81 e Form 700 MCGRAMDISON PowerSystems Group McGraw -Edison Company PROPOSAL P-98904 SHEET 11 MANUFACTURER'S SPECIFICATION PAINTING The paint used on McGraw -Edison Transformers and Power Circuit Breakers is manufactured for us by Technical Coating Corp. and/or Hanna Chemical Coating Corp., under our specifications, which are as follows: SPECIFCATIONS OF PRIMER AND FINISH COATS Primer Coat: Special Transformer Paint Primer: The pigment includes red iron oxide and zinc chromate with no rust inciting pigments. The vehicle is a short oil length synthetic Alkyd, designed to give maximum adhesion and to provide a tight undercoat for succeeding coats. Intermediate and Finish Coats: ANSI #70 Transfomer Paint:• The pigment consists of the highest grade non -chalking titanium dioxide pigment and enough shading colorants to produce the proper tint. The vehicle is composed of the highest grade Alkyd vehicle for exterior exposure. This combination gives a hard, yet elastic finish extremely resistant to fumes, weather, transformer temperature changes, transformer oil and other factors to which it may be exposed. This paint has long -wearing, non -chalking, non -fading qualities and is applied in maximum possible firm thickness for greater durability. METHOD OF APPLYING PRIMER AND SUCCEEDING COATS OF PAINT TO TRANSFORMER Number of Coats: The primer and at least two (2) coats of PAINT are applied to all power equipment. Preparation Before Painting: Surfaces of tanks, covers, bases, trucks (tubes, radiators, compartments and expansion tanks, when furnished) are GRIT BLASTED before painting. Surfaces are clean, free from moisture, oil, dirt, rust, scale and foreign material. Surfaces and paint have the same temperature, preferably not less than 600F. Painting: The PRIMER coat is applied immediately following grit blasting (within three (3) hours). Primer coat is then thoroughly dried. At least two (2) subsequent coats of PAINT are then applied, after the primer coat is thoroughly dried. Method of Applying Primer and Subsequent Coats: The surfaces are sprayed or paint is applied by the "flow method". By the flow method, the paint is poured over the entire surface by means of a circulation pump. This is equivalent to a dipping process. PRIMER and PAINT are applied by experienced workmen, and in dust -free atmosphere. Method of Drying Primer and Paint: On all power products, the primer and subsequent coats of paint are air dried. Form qpo,