MA-041 – DGA 900 Plus - Installation & Commissioning Manual - Rev 1.1 4-Mar-22 Page 67 of 99
Figure 9-49: Resistance measurement
Record the measurement as [R1] in Table 9-7: Results. It should be less than 3000 Ω and
within 5% of the Bushing Adaptor input resistance.
To verify the measurement, use the Administrator login and factory password of the
month (POTM) to gain access to service mode. In the HMI, select BMT > Calibration –
Bushing Adaptor Calibration Data.
An example of a load impedance is shown in Figure 9-50.
Figure 9-50: Bushing Adaptor Calibration Data
9.8.2.4.3 Input Resistance Test
For each input, measure the resistance at the core and shield terminals as show in
Figure 9-51.
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