ABB 2769522-C Installation And Maintenance Manual
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ABB 2769522-C Installation And Maintenance Manual

Test adapter
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1ZSC000563-ACD EN, REV. A, 2019-06-25
Test adapter
Installation and maintenance guide
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Summary of Contents for ABB 2769522-C

  • Page 1 1ZSC000563-ACD EN, REV. A, 2019-06-25 Test adapter Installation and maintenance guide...
  • Page 2 The information contained in this document may be subject to change without prior warning and should not be considered as binding on ABB AB’s behalf. ABB AB accepts no liability for any errors that may appear in this document. ABB AB is not liable for any damage resulting from the incorrect interpretation of this document.

  • Page 3: Table Of Contents

    Tools ......................................13 Consumables ....................................13 Installation of the test adapter, 1ZSC003881-AAC........................14 Installation of electrical circuits, 1ZSC003881-AAC ........................16 Installation of the test adapter, 2769522-C..........................19 Installation of electrical circuits, 2769522-C ..........................22   Commissioning Output error sources ................................... 25 Insulation test ....................................
  • Page 4 Installation and maintenance guide 1ZSC000563-ACD EN, REV. A, 2019-06-25...

  • Page 5: Safety

    1 Safety 1.1 Levels of safety risks Throughout the manual, various types of safety risks are indicated. The most serious level on this scale provides a warning about serious personal injury or possible death, or major damage to a product, if the instructions are not observed.

  • Page 6: Hazardous Working Situations

    1.2 Hazardous working situations Hazard Action Working close to high voltage. Disconnect all plant power. Ground all objects at the workplace. If work must be done close to live plant components, make sure that the safety distance is in compliance with the applicable safety regulations.

  • Page 7: Product Description

    2.1 Design Overview The test adapter from ABB Components can permanently connect the tap on the bushing to measuring equipment, for monitoring of the bushing during service. All transformer bushings and some wall bushings that are manufactured by ABB Components, are capacitance-graded bushings that are equipped with a voltage tap or test tap.
  • Page 8 Test adapter, 2769522-C Terminal box Plug Cover* * This cover is installed on the bushing on delivery from ABB. Test adapter, 1ZSC003881-AAC Terminal cover Extension Plug Installation and maintenance guide 1ZSC000563-ACD EN, REV. A, 2019-06-25...

  • Page 9: Usage

    2.2 Usage Overview Use the test adapter only as described in this installation and maintenance guide, and obey the limitations of the test adapter. Refer to Description and limitations of the tap, page 9. Grounding The tap is not self grounding, and must always be grounded or connected to an external impedance. Because usually is relatively small, the test tap must never be open-circuited when the bushing is energized.
  • Page 10 Limitation of the connected circuit Maximum allowed voltage, U At service voltage: 110 V At lightning impulse: 200 V Maximum inductive and/or resistive loads, Z: ωL = 100 mΩ R = 100 mΩ   Unit Definition Capacitance 1 in condenser core, [F] Refer to the test report for the bushing.

  • Page 11: Delivery

    3 Delivery 3.1 Incoming inspection Make sure that all items have been delivered, refer to the packing list. Carefully inspect the parts for shipping damage. 3.2 Transportation Keep the test adapter in the original packaging during transportation. 3.3 Storage Keep the test adapter in the original packaging until installation. The test adapter must be stored indoors, in a controlled temperature with low humidity.
  • Page 12 Installation and maintenance guide 1ZSC000563-ACD EN, REV. A, 2019-06-25...

  • Page 13: Installation

    4 Installation 4.1 Tools Tool Part number Note Torque wrench Crosshead screwdrivers Phillips type and Pozidriv type. 4.2 Consumables Item Brand Part number Note Mobilgrease 28 MOBIL 11714014-407 Lubricates and protects metals against corrosion. Protects rubber. Does not react with transformer oil. Installation and maintenance guide 1ZSC000563-ACD EN, REV.

  • Page 14: Installation Of The Test Adapter, 1Zsc003881-Aac

    4.3 Installation of the test adapter, 1ZSC003881-AAC Overview Cover Test adapter, 1ZSC003881-AAC DANGER! Risk of death to personnel! Make sure that the bushing is de-energized and out of service. Make sure that the high-voltage parts are visibly grounded, before removing the cover on the tap. CAUTION! Do not energize the bushing without a test adapter (4) or the cover (1) installed.
  • Page 15 Remove the protective cap (6). Apply Mobilgrease 28 to the O-ring (2) and and the threads of the test adapter (4). Put the O-ring (2) in the groove in the test adapter (4). Install the test adapter (4), and tighten it. Torque 15 Nm End of instruction...

  • Page 16: Installation Of Electrical Circuits, 1Zsc003881-Aac

    4.4 Installation of electrical circuits, 1ZSC003881-AAC Procedure Remove the terminal cover (5), and the O-ring (7). Apply Mobilgrease 28 to the O-ring (7) and put it in the groove. Remove the grounding cable (6). Installation and maintenance guide 1ZSC000563-ACD EN, REV. A, 2019-06-25...
  • Page 17 Remove the plug (11). Put the signal cable through the cable gland (9). CAUTION! Make sure that the seal (8) has a correct seal against the signal cable. An incorrect seal will cause water to leak into the terminal cover. NOTE! If the bushing is used outdoors: the cable gland must be of...
  • Page 18 Install the signal cable for the measuring equipment, refer to the instructions from the manufacturer. CAUTION! Use a signal cable of sufficient size for the amperage and voltage. Make sure that the signal cable is rated for outdoor use, and that it has the correct shielding for this application.

  • Page 19: Installation Of The Test Adapter, 2769522-C

    4.5 Installation of the test adapter, 2769522-C Overview Cover Test adapter, 2769522-C DANGER! Risk of death to personnel! Make sure that the bushing is de-energized and out of service. Make sure that the high-voltage parts are visibly grounded, before removing the cover on the tap.
  • Page 20 With the screws (5), adjust the nut (2) to a distance of 1,5 mm (±0,5 mm) from the terminal box (4). Apply Mobilgrease 28 to the O-ring (3), and put it in the groove (7) in the terminal box. CAUTION! Do not remove the plug (11) until the measuring circuits are installed.
  • Page 21 Tighten the four screws (5). Torque 10 Nm Make sure that the O-ring seals correctly. CAUTION! An incorrect seal will cause water to leak into the terminal box. Apply Mobilgrease 28 to the threads on the cover (1), and then install the cover (1). CAUTION! Do not energize the bushing without the cover (1) installed.

  • Page 22: Installation Of Electrical Circuits, 2769522-C

    4.6 Installation of electrical circuits, 2769522-C Procedure Remove the cover (1). Remove the grounding cable (6). Remove the plug (11). Installation and maintenance guide 1ZSC000563-ACD EN, REV. A, 2019-06-25...
  • Page 23 Install a cable gland (9). NOTE! If the bushing is used outdoors: the cable gland must be of IP67 classification or better, and have a flexible rubber seal (8). NOTE! The cable gland (9) must have PG 22.5 threads. Availble space for the cable gland is Ø36 mm.
  • Page 24 Apply Mobilgrease 28 to the O-ring (7) and put it in the groove. Apply Mobilgrease 28 to the threads on the cover (1), and then install it. Torque 62 Nm End of instruction Installation and maintenance guide 1ZSC000563-ACD EN, REV. A, 2019-06-25...

  • Page 25: Commissioning

    Additional error sources are the tolerances in the measuring equipment, and the timing when the operator reads the output. 5.2 Insulation test Do an insulation test according to ABB:s installation and commissioning guide for the specific bushing. CAUTION! Do not energize the bushing without the test adapter, or the cover installed. The cover connects the bushing to ground, and will prevent damage to the bushing.
  • Page 26 Installation and maintenance guide 1ZSC000563-ACD EN, REV. A, 2019-06-25...

  • Page 27: Disposal And Environmental Information

    6.2 Disposal and recycling ABB strives to minimize the product's impact on the environment throughout its entire life cycle. Technical and product development focuses on environmental aspects. The ecocycle approach is striven for, and consideration is taken to the materials' environmental impact and recycling alternatives.
  • Page 28 Oils and greases Before disposal of the bushing, oil, grease and similar products must be removed and sent to an approved environmental waste treatment plant or recycling company. By utilizing gravimetric forces, oil waste can be separated into oil, water and a range of contaminants. In many cases, the oil can then be reused. As an alternative, the energy content in oil can be recovered through combustion at a plant designed for the purpose.

  • Page 29: References

    7 References 7.1 Summary • IEEE standard performance characteristics and dimensions for outdoor apparatus bushings IEEE C57.19.01-1991 • Bushing diagnostics and conditioning, ABB document 2750 515-142 Installation and maintenance guide 1ZSC000563-ACD EN, REV. A, 2019-06-25...
  • Page 32 ABB AB, Components SE-771 80 Ludvika, Sweden www.abb.com/transformercomponents © Copyright 2019 ABB, All rights reserved. Specifications subject to change without notice.

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