0000005534 00000 n The examples of the faults which could cause gas BUCHHOLZ RELAYS APPLICATION Buchholz Relay is a protection device for monitoring the gas and oil movements in oil immersed transformers. In electric power distribution and transmission, a Buchholz relay is a safety device mounted on some oil-filled power transformers and reactors, equipped with an external overhead oil reservoir called a "conservator".. j�������}sQ�����Qa�������w�"�#�#���y]���L�̀�Q����C (CB3A��i � Ą10D�1�s �d�p�#��(�-��#�#� F�f��\�r�*���[�A�A�E��?�#���9HȒ���lE�"A,����S�|��|S���(-� d1ATz���l����� +��Q �.•��Q �&O������M� �"�� endstream endobj 331 0 obj 431 endobj 309 0 obj << /Type /Page /Parent 303 0 R /Resources << /Font << /F0 311 0 R /F1 313 0 R >> /XObject << /im1 328 0 R >> /ProcSet 329 0 R >> /Contents 314 0 R /MediaBox [ 0 0 595 842 ] /CropBox [ 0 0 595 842 ] /Rotate 0 >> endobj 310 0 obj << /Type /FontDescriptor /FontName /GJHIFO+Arial /Flags 32 /FontBBox [ -250 -212 1190 1000 ] /MissingWidth 272 /StemV 80 /StemH 80 /ItalicAngle 0 /CapHeight 905 /XHeight 453 /Ascent 905 /Descent -212 /Leading 150 /MaxWidth 992 /AvgWidth 441 /FontFile2 321 0 R >> endobj 311 0 obj << /Type /Font /Subtype /TrueType /Name /F0 /BaseFont /GJHIFO+Arial /FirstChar 32 /LastChar 255 /Widths [ 278 278 355 556 556 889 667 191 333 333 389 584 278 333 278 278 556 556 556 556 556 556 556 556 556 556 278 278 584 584 584 556 1015 667 667 722 722 667 611 778 722 278 500 667 556 833 722 778 667 778 722 667 611 722 667 944 667 667 611 278 278 278 469 556 333 556 556 500 556 556 278 556 556 222 222 500 222 833 556 556 556 556 333 500 278 556 500 722 500 500 500 334 260 334 584 750 556 750 222 556 333 1000 556 556 333 1000 667 333 1000 750 611 750 750 222 222 333 333 350 556 1000 333 1000 500 333 944 750 500 667 278 333 556 556 556 556 260 556 333 737 370 556 584 333 737 552 400 549 333 333 333 576 537 278 333 333 365 556 834 834 834 611 667 667 667 667 667 667 1000 722 667 667 667 667 278 278 278 278 722 722 778 778 778 778 778 584 778 722 722 722 722 667 667 611 556 556 556 556 556 556 889 500 556 556 556 556 278 278 278 278 556 556 556 556 556 556 556 549 611 556 556 556 556 500 556 500 ] /Encoding /WinAnsiEncoding /FontDescriptor 310 0 R >> endobj 312 0 obj << /Type /FontDescriptor /FontName /HJHIFO+Arial,Bold /Flags 16416 /FontBBox [ -250 -212 1201 1000 ] /MissingWidth 333 /StemV 153 /StemH 153 /ItalicAngle 0 /CapHeight 905 /XHeight 453 /Ascent 905 /Descent -212 /Leading 150 /MaxWidth 1001 /AvgWidth 479 /FontFile2 324 0 R >> endobj 313 0 obj << /Type /Font /Subtype /TrueType /Name /F1 /BaseFont /HJHIFO+Arial,Bold /FirstChar 32 /LastChar 255 /Widths [ 278 333 474 556 556 889 722 238 333 333 389 584 278 333 278 278 556 556 556 556 556 556 556 556 556 556 333 333 584 584 584 611 975 722 722 722 722 667 611 778 722 278 556 722 611 833 722 778 667 778 722 667 611 722 667 944 667 667 611 333 278 333 584 556 333 556 611 556 611 556 333 611 611 278 278 556 278 889 611 611 611 611 389 556 333 611 556 778 556 556 500 389 280 389 584 750 556 750 278 556 500 1000 556 556 333 1000 667 333 1000 750 611 750 750 278 278 500 500 350 556 1000 333 1000 556 333 944 750 500 667 278 333 556 556 556 556 280 556 333 737 370 556 584 333 737 552 400 549 333 333 333 576 556 278 333 333 365 556 834 834 834 611 722 722 722 722 722 722 1000 722 667 667 667 667 278 278 278 278 722 722 778 778 778 778 778 584 778 722 722 722 722 667 667 611 556 556 556 556 556 556 889 556 556 556 556 556 278 278 278 278 611 611 611 611 611 611 611 549 611 611 611 611 611 556 611 556 ] /Encoding /WinAnsiEncoding /FontDescriptor 312 0 R >> endobj 314 0 obj [ 316 0 R 318 0 R ] endobj 315 0 obj 650 endobj 316 0 obj << /Length 315 0 R /Filter [ /ASCII85Decode /FlateDecode ] >> stream Named afteri ts inventor mr. Max Buchholz (1875–1956) in 1921, relay is used to produce an alarm in case of incipient (i.e.slow-developing) faults in the transformer and to disconnect the transformer from the supply in the event of … in the Buchholz relay are combustible and can form explosive mixtures with air. Buchholz relay is a safety device which is generally used in large oil immersed transformers (rated more than 500 kVA). 50 0 obj <> endobj &Cy�Y:G�)�.�E�SjH��1n�&]�/���7��W)���r�G����3zN/�� As an esteemed name in the relevant industry, we are trading and supplying a commendable array of Buchholz Relay that is used for protection of oil immersed transformers. l Worldwide acceptance. Buchholz relays in South Africa By P De Matos, Allbro Where there is a power transformer, you will find a Buchholz relay. %PDF-1.4 %���� �|}�����Ј�oJ�M�DE���ltf�Z�G ���} ��P�$gPl�ۖ�Z�����*ϣ���c�4�����P>��#�E"z�e�PܝZ�;ЦPIIIY�*�ʆ*��*��U�q)a�h"-�DJ#���⸸*IJYA� 2VΖ���rW����|�N�!�]��W�����ikC�-Z��M�k+�$-U;�]� Buchholz relay in a transformer is an oil container housing the connecting pipe from the main tank to the conservator tank.It has mainly two elements. 0000001117 00000 n can generate gas and affect transformer performance. The Buchholz Relay is very important protective device in oil filled Transformer.The BR saves the transformer when there is major fault in active parts. Buchholz relays are used to protect transformers from … A Buchholz relay is used to monitor large transformers for oil loss or insulation breakdown. 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