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The SD card should only be retrieved by an approved engineer — under no
circumstances should it be inserted into a PC as that would risk accidental
reformatting and subsequently data loss.
Perform the following steps to decommission the product:
1. De-energise and switch off the transformer; ground the transformer main leads
and apply LOTO.
2. Remove power from the AC supply to the product and apply LOTO procedures.
3. Remove power from the relay supplies that are controlled by the product and
apply LOTO procedures.
4. Open the product cabinet.
5. Remove the AC supply cable from the fuse holders (see Figure 5-24).
6. Remove the relay control cables from the relay board (see Figure 5-37).
7. Replace the product Bushing Adaptors with the original tap covers.
WARNING
catastrophic failure of the bushing.
8. Remove cabling and external sensors (MMTS, GPS antenna and HFCT).
9. Remove the cabinet and stand.
10. Re-energise the transformer.
MA-017 – BMT 330 Installation Manual – Rev 3.3
Failure to replace the original test tap caps may cause
4-Mar-22
Page 36 of 69
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