ABB BRIT-90-35-1000 Operation Manual Download | Manualshive

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ABB Power Grids Ltd.

GKSL 680205.021 RE

Rev. 2, 26.09.2019

5

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.

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Summary of Contents for BRIT-90-35-1000

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: ...practices and good judgement must be used by the personnel when installing operating maintaining and or disposing such equipment Safety as defined in this instruction involves two conditions 1 Personal injury or death 2 Product or property damage includes damage to the bushing or other property and reduced bushing life Safety notations are intended to alert personnel of possible personal injury de...

Page 3: ... Design 5 5 Marking 6 6 Packaging transportation and storage 6 7 Installation 7 8 Measurements after installation 10 9 Recommended maintenance and supervision 10 10 Testing 10 11 Analysis of test results 13 12 Disposal 13 13 Scope of delivery 13 14 Manufacturer s address 14 ...

Page 4: ...transformer tank and are structurally independent devices These bushings are intended for use in UKHL1 and T1 climate according to GOST15150 69 3 Technical data Table 1 outlines the main technical data of these bushings Table 1 Type of bushing BRIT 90 35 200 1000 Catalogue number of outline drawing КН 1 9 009T Rated voltage kV 35 Rated highest voltage Umax kV 40 5 Maximum line to ground voltage kV...

Page 5: ...ABB Power Grids Ltd GKSL 680205 021 RE Rev 2 26 09 2019 5 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: ...shing flange there is a designation plate with following information manufacturer s trade mark country the bushing s identifying code dimensional drawing number production serial number voltage and current rating weight maximum installation angle in relation to vertical C1 and tgδ1 C2 and tgδ2 6 Packaging transportation and storage 6 1 Shipment Bushings are transported in wooden boxes rigidly fixe...

Page 7: ...ng be careful to avoid porcelain insulator damage A sling and a lifting device Figure 2 will be required while taking the bushing out of the box One end of the sling is put around the porcelain between the two uppermost sheds The other end is slung around the flange If placed on the ground the bushing shall be supported at the same points as in the box Examine the bushing to make sure the porcelai...

Page 8: ...be dismounted before tightening the flange The fastening of the flange must be designed in a way that no deformation may occur at the bushing flange The support surface of the transformer must have a flatness tolerance of max 0 3 mm no steps allowed Before the installation the bushing must adapt to the environmental temperature to prevent condensation at the bushing surface Warning Do not damage t...

Page 9: ...ABB Power Grids Ltd GKSL 680205 021 RE Rev 2 26 09 2019 9 Figure 2 Lifting of bushing ...

Page 10: ...to compare with values in a acceptance test report A significant difference in the value of the capacity C1 from that specified in the acceptance test report more than 5 may indicate damage transport or during installation and the commissioning should not be put into operation 9 Recommended maintenance and supervision Cleaning of insulator surface Measurement of capacitance and tan Thermovision in...

Page 11: ...be divided by a correction factor given in the table 3 and a curve at the figure 3 In this case it is presupposed that the mean temperature of the bushing body is calculated according to the formula 3 2 To Ta T where T is the mean temperature of the bushing body Ta is the temperature of the surrounding air To is the temperature of the oil inside the transformer The result is corrected to the tempe...

Page 12: ... Installation and connection of the bridge Make sure that the transformer is off and out of service For safe and reduce influence of interference short circuit all the transformer winding Ground the winding that are not connected to the bushing being tested Connect the measuring bridge to the test tap as required in the relevant operation manual Depending on which insulator is checked connect the ...

Page 13: ...mit value tg 1 or increasing the capacity C1 by more than 5 please contact ABB Power Grids Ltd Russia for recommendations on the possibility of further operation of the bushing The service life of the bushing is at least 30 years 12 Disposal After reaching the end of lifetime this product has to be disposed correctly according local laws and regulations All the contained substances and material sh...

Page 14: ...of these bushings please contact the manufacturer at the 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 E mail HVservice ru abb com ...

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