OTAA Oil Impregnated Paper (OIP) Bushing for IEEE/ANSI Market

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1 OTAA Oil Impregnated Paper (OIP) Bushing for IEEE/ANSI Market

2 OTAA The OTAA is the next generation of Oil Impregnated Paper condenser bushing manufactured to IEEE C from 25 kv to 500 kv system voltages. Trench Oil Impregnated Paper (OIP) transformer and Reactor bushings have a long history first with IEC application then in mid 1990 s with IEEE applications. The fine capacitance graded core design uses aluminum grading foils to control the electrical field both radially and axially. The core design has been proven over time and number of bushings installed in Transformer and Reactors with IEC and IEEE applications. The new OTAA has been upgraded to exceed the electrical performance of both IEC and IEEE C The design philosophy of the OTAA was to take the greater electrical performance parameter between IEC and IEEE and create a superior design in the dimensional requirement of the IEEE Standard. The net result of the new design optimization is reduced lifetime insulation stresses. The OTAA is a high performance design to meet your transformer and reactor applications whether it is a new installation or to replace an old existing bushing. Fig. 1: Section view of OTAA 2

3 The introduction of the IEEE line of bushings brought several innovations to the IEEE market: Maintenance free top terminal with multi-spring contact Porcelain cemented into the flange for increased cantilever withstand capability Oil side epoxy insulator providing high impact resistance and reduced size. Imbedded end shield in the epoxy insulator eliminates external shielding in draw lead application and provides greater internal clearances. Horizontal transportation and storage. Air side insulator is available with the standard porcelain or silicone rubber. Draw lead bushing suitable for standard cable application or Split Conductor when a higher current is required. Same bushing for both applications. Draw lead adapters to allow replacement of old draw lead bushings without modification of the existing stud & cable. Standard creepage level 44 mm/kv (heavy) per IEEE C Fig. 2: Parts of OTAA 3

4 Electrical Characteristics of OTAA Bushings Nominal system voltage BIL Rating Max Line-Ground Voltage Rated Continuous Current Connection to Tranformer Mounting Style Style No. Upper End Arcing Distance (min) Lower End Oil End Length (± 1/8in) kv kv kv A (in) L (in) , Draw Lead Vertical OTAA 150-H AG4*-01-A 1500 Split Conductor Vertical OTAA 150-H AG4*-01-AXT 30, Fixed Vertical OTAA 150-F AG4*-01-AYS 9,25 30, Fixed Vertical OTAA 150-F AG4*-01-AXS 30,5 700 Draw Lead Vertical OTAA 200-H AG4*-01-A 1500 Split Conductor Vertical OTAA 200-H AG4*-01-AXT 31, Fixed Vertical OTAA 200-F AG4*-01-AYS 13,38 33, Fixed Vertical OTAA 200-F AG4*-01-AYS 33,5 700 Draw Lead Vertical OTAA 250-H AG4*-01-A 1400 Split Conductor Vertical OTAA 250-H AG4*-01-AXT 18 34, Fixed Vertical OTAA 250-F AG4*-01-AYS 34,5 700 Draw Lead Vertical OTAA 350-H AG4*-01-A 1400 Split Conductor Vertical OTAA 350-H AG4*-01-AXT 37, Fixed Vertical OTAA 350-F AG4*-01-AYS 27 39, Fixed Vertical OTAA 350-F AG4*-01-AYS 39,5 800 Draw Lead Vertical OTAA 550-H AG4*-01-A 1400 Split Conductor Vertical OTAA 550-H AG4*-01-AEP Fixed Vertical OTAA 550-F AG4*-01-ADP 42, Fixed Vertical OTAA 550-F AG4*-01-AEP Fixed Vertical OTAA 550-F AG4*-01-AEP Draw Lead Vertical OTAA 650-H AG4*-01-A 1400 Split Conductor Vertical OTAA 650-H AG4*-01-AEP 46, Fixed Vertical OTAA 650-F AG4*-01-ADP 50 46, Fixed Vertical OTAA 650-F AG4*-01-AEP 46, Fixed Vertical OTAA 650-F AG4*-01-AEP 46, Draw Lead Vertical OTAA 750-H AG4*-01-A 1400 Split Conductor Vertical OTAA 750-H AG4*-01-AEP 1200 Fixed Vertical OTAA 750-F AG4*-01-ADP Fixed Vertical OTAA 750-F AG4*-01-AEP 800 Draw Lead Vertical OTAA 900-H AG4*-01-A 1200 Split Conductor Vertical OTAA 900-H AG4*-01-AEP 1200 Fixed Vertical OTAA 900-F AG4*-01-AEP 84, Fixed Vertical OTAA 900-F AG4*-01-AEP 3000 Fixed Vertical OTAA 900-F AG4*-01-AEP 800 Draw Lead Vertical OTAA 1175-H AG4*-01-A 1600 Split Conductor Vertical OTAA 1175-H AG4*-01-AFP Fixed Vertical OTAA 1175-F AG4*-01-AFP 94, Fixed Vertical OTAA 1175-F AG4*-01-AFP Draw Lead Vertical OTAA 1675-H AG4*-01-A 1600 Split Conductor Vertical OTAA 1675-H AG4*-01-AEP Fixed Vertical OTAA 1675-F AG4*-01-AFP 149, Fixed Vertical OTAA 1675-F AG4*-01-AFP 65 30,5 31,5 34,5 37, ,

5 Standard IEEE-C Creepage distance 54 mm/kv L-G (* 54 mm/kv code 4 and 44 mm/kv code = 3 ) Altitude Porcelain 3300ft Gray Lower End Top Terminal Gasket Space Flange Bolting CT Pocket (distance from flange mounting to min oil level) Usable Thread (min) Thread Class UNF-2A Terminal Details Inside Dia. (max) Outside Dia. (min) No. of Bolts Hole size Bolt Circle Dia. W (in) A (in) R Figure P (in) Q (in) (in) (in) 21 2, /2-12 1,1 4 6,25 4 0,875 7, , /2-12 2,1 4 6,25 4 0,875 7, ,5 1 1/2-12 2,2 4 6,25 4 0,875 7, ,2 4 6,25 4 0,875 7, , /2-12 1,1 4 6,25 4 0,875 7, , /2-12 2,1 4 6,25 4 0,875 7, ,5 1 1/2-12 2,2 4 6,25 4 0,875 7, ,2 6,25 8,25 6 0,875 9, /2-12 1,1 5 7,25 4 0,875 8, ,5 1 1/2-12 2,1 5 7,25 4 0,875 8, ,5 1 1/2-12 2,2 5 7,25 4 0,875 8, , /2-12 1,1 6 8,25 6 0,875 9, , /2-12 2,1 6 8,25 6 0,875 9, ,5 1 1/2-12 2,2 6 8,25 6 0,875 9, ,2 7 9,25 6 0,875 10, /2-12 1,1 9,875 11, ,25 13, /2-12 3,5 9,875 11, ,25 13, /2-12 3,4 9,875 11, ,25 13, ,5 1 1/2-12 3,5 9,875 11, ,25 13, ,5 9,875 11, ,25 13, /2-12 1,1 10,875 12, ,25 14, /2-12 3,5 10,875 12, ,25 14, ,5 1 1/2-12 3,4 10,875 12, ,25 14, ,5 1 1/2-12 3,5 10,875 12, ,25 14, ,5 10,875 12, ,25 14, /2-12 1,1 12,375 14, ,25 15, /2-12 3,5 12,375 14, ,25 15, /2-12 3,4 12,375 14, ,25 15, ,5 1 1/2-12 3,5 12,375 14, ,25 15, /2-12 1,1 17,125 19,5 12 1, /2-12 3,5 17,125 19,5 12 1, /2-12 3,5 17,125 19,5 12 1, ,5 1 1/2-12 3,5 17,125 19,5 12 1, ,5 17,125 19,5 12 1, /2-12 1,2 17,125 19,5 12 1, /2-12 3,6 17,125 19,5 12 1, ,5 1 1/2-12 3,6 17,125 19,5 12 1, ,6 17,125 19,5 12 1, /2-12 1, , /2-12 1, , ,5 1 1/2-12 3, , , ,

6 Trench Bushing Factories & Sales Office* Trench France SAS 16, Rue du Général Cassagnou B.P. 70 F St. Louis, Cedex France Phone : Fax : Trench High Voltage Products Ltd., Shenyang No. 2 Jingshenxisan Street Daoyi Economic Development Zone Shenbei New District Shenyang, P. R. China Phone: /27 Fax: Bushing Division* 1865 Clements Road Pickering, Ontario Canada L1W 3R8 Phone: Fax: Other Trench Factories Coil Products Division 71 Maybrook Drive Scarborough, Ontario Canada M1V 4B6 Phone: Fax: Power Line Carrier Division 330 Finchdene Square Scarborough, Ontario Canada M1X 1A5 Phone: Fax: Instrument Transformer Division 1865 Clements Road Pickering, Ontario Canada L1W 3R8 Phone: Fax: Trench Austria GmbH Paschinger Strasse 49 Postfach 13 A-4060 Linz-Leonding Austria Phone: Fax: Trench Brasil Ltda Via Expressa de Contagem, 2685 Contagem, Minas Gerais CEP Brazil Phone: Fax: Trench Italia S.r.l. Strada Curagnata, 37 IT Bragno Cairo, Montenotte (SV) Italy Phone; Fax: Trench Germany GmbH Nürnberger Strasse 199 D Bamberg Germany Phone: Fax: Trench China MWB (Shanghai) Co., Ltd. No. 3658, Jiancheng Road Minhang, Shanghai P. R. China Phone: Fax: The Trench Group is your partner of choice for electrical power transmission and distribution solutions today and for the development of your new technology solutions of tomorrow. Published by and copyright Trench France SAS, 16, Rue du Général Cassagnou, B.P. 70 F , St. Louis, Cedex, France All rights reserved. Brand and trademarks mentioned in this document are the property of Trench. Subject to change without prior notice. The information in this document contains general descriptions of the technical options available, which are not necessarily available in every single case. The required features must therefore be defined in each individual case when concluding the contact.

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