Related Manuals for ABB BRIT-90-35-200
Summary of Contents for ABB BRIT-90-35-200
- Page 1 ABB Power Grids Ltd. Transformer bushings BRIT-90-35-200/1000 with RIP- insulation, voltage class 35 kV Operation manual GKSL 680205.021 RE Revision 2...
- Page 2 ABB Power Grids Ltd. Safety information Keep this instruction available to those responsible for the installation, maintenance, and operation of the bushing. The installation, operation, and maintenance of a bushing present numerous potential unsafe conditions, including, but not limited to, the following: ■...
-
Page 3: Table Of Contents
ABB Power Grids Ltd. Contents 1 General…………………………………………… 2 Purpose…………………………………………… 3 3 Technical data…………………………………….. 3 4 Design……………………………………………. 5 Marking…………………………………………... 6 6 Packaging, transportation and storage…………… 7 Installation………………………………………... 7 8 Measurements after installation…………………... 10 ………… 10 Recommended maintenance and supervision 10 Testing……………………………………………. 10 11 Analysis of test results……………………….. -
Page 4: General
The manual provides basic instructions for installation and maintenance of this type of bushings. The manual does not cover any repair aspects. If a bushing was damaged during transportation, installation or usage, you should contact to ABB Power Grids Ltd for repair and retesting. -
Page 5: Design
GKSL 680205.021 RE ABB Power Grids Ltd. Rev. 2, 26.09.2019 4 Design Figure. 1 Design of bushing 1) body; 2) copper or brass rod; 3) porcelain insulator; 4) flange; 5) bushing head; 6) measuring tap. -
Page 6: Marking
GKSL 680205.021 RE ABB Power Grids Ltd. Rev. 2, 26.09.2019 Figure 1 shows the bushing components. The main insulation of the bushing consists of an insulating body (pos. 1) made from under vacuum resin impregnated paper with aluminium layers for capacitive grading and wound on the copper or brass rod (pos. -
Page 7: Installation
(tg) measurement at about 10 kV between head and measuring tap. If the deviation of the power factor is more of a test report value at 0,1 %, please contact ABB Power Grids Ltd., Russia for further information about the drying procedure. - Page 8 GKSL 680205.021 RE ABB Power Grids Ltd. Rev. 2, 26.09.2019 crane. The other sling is fixed around the two uppermost porcelain sheds and attached to the same lifting hook. The angle is adjusting by the polyspast. 7.2 Installation on the transformer The bushings type BRIT do not contain transformer oil and therefore can be mounted right after transporting or storage without being kept upright for a certain period.
- Page 9 GKSL 680205.021 RE ABB Power Grids Ltd. Rev. 2, 26.09.2019 Figure. 2 Lifting of bushing...
-
Page 10: Measurements After Installation
GKSL 680205.021 RE ABB Power Grids Ltd. Rev. 2, 26.09.2019 7.5 Grounding the flange Danger: The flange of the bushing must always be ground by a safe earth connection (line) after the installation! The bushings are provided with one or two threads M12 at the flange in order to ground the flange. - Page 11 GKSL 680205.021 RE ABB Power Grids Ltd. Rev. 2, 26.09.2019 10.2 Capacitance C and tgδ measurements First de-energize the transformer, then take the test tap cover off and connect the measuring equipment to it using the test adapter, while the test power source is connected to the terminate plate of the bushing.
- Page 12 GKSL 680205.021 RE ABB Power Grids Ltd. Rev. 2, 26.09.2019 Capacity C1 depends on the bushing temperature and increases by approximately 0.04% with an increase in temperature of 1 ° C. The value of the capacity C1, related to 20 ° C: С...
-
Page 13: Analysis Of Test Results
Nether breathing- nor skin protection nor any special precautions are required. Apply the common and appropriate safety standards to prevent working accidents. In case of uncertainties please contact ABB Power Grids Ltd., Russia for advanced information and instructions. -
Page 14: Manufacturer's Address
Russia, 141371, Moscow region, Khotkovo-1, PO 8, Tel. (495) 7772220; www.hitachiabb-powergrids.com/ru Service center for high-voltage equipment of ABB Power Grids Ltd., Russia: Adress: 117997, Cheboksary city, Rechnikov square, 3 Tel. : +7(8352) 220-07-22. Fax: +7(8352) 220-07-22.