Measurement Of Capacitance And Dissipation Factor - ABB GOE Series Installation And Commissioning Manual

3. Find leaking gas with gas detector (sniffer) near
the gasket.
End of instruction

5.2.4 Measurement of capacitance and dissipation factor

Overview
After installation of the bushing, it is recommended to measure the capacitance values for future reference,
such as repairs, service etc. This can be done on an installed bushing because it has an insulated test tap.
Refer to 2750 515-142, "Bushing diagnostics and conditioning".
• C is the capacitance between the test tap and the outer terminal.
1
• C is the capacitance between the test tap and ground.
2
Nominal capacitance
The capacitance (C
for all service conditions. Thus, it is important to measure and record the capacitance (C
reference, such as repairs, service etc.
Type
GOE 250-210
GOE 380-300
GOE 650-500
GOE 950-650
GOE 1050-750
GOE 1175-850
GOE 1300-1050
GOE 1425-1150
GOE 1550-1175
GOE 1675-1300
GOE 1800-1360
GOE 2550-1600
GOE 2550-1675
Installation and commissioning guide
2750 515-1 EN, REV. 14, 2020-06-26
) depends on the transformer, and it is not possible to give a nominal value that is valid
2
Space for CT = 305 mm
C C
1 2
432 290
432 290
389 300
370 658
373 390
391 480
515 640
515 640
463 700
463 700
463 700
550 4610
585 5000
Space for CT = 605 mm
* C
1
571
571
490
454
431
465
550
550
460
460
460
560
669
) for future
2
C *
2
480
480
480
790
590
840
896
896
700
700
700
4820
5700
63