NETA Level 2 exam XFMR tables

[Skoivisto]

9. What is the NETA Recommended Minimum Insulation Resistance value for a dry-type 4,160V-480V D-D transformer primary winding?
Your Answer: 1 Gigohm
Help: NETA Table 100.5 (2019)

The answers were all in Gigs...1, 5, 10, 20. The cited table doesn't recommend anything beyond Megs...what am I missing?

[akumaleon]

9. What is the NETA Recommended Minimum Insulation Resistance value for a dry-type 4,160V-480V D-D transformer primary winding?
Your Answer: 1 Gigohm
Help: NETA Table 100.5 (2019)

The answers were all in Gigs...1, 5, 10, 20. The cited table doesn't recommend anything beyond Megs...what am I missing?


1G would be for liquid filled.
I would recommend understand the SI units prefixes too.
500
https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DUw YVQgYI8yE&psig=AOvVaw3fgJ0VjMptn9Pw_zyRorjD&ust=1613622269907000&source=images&cd=vfe&ved=0CAIQjRxqFwoTCIiMtsSJ8O4CFQAAAAAdAAAAABBL

[Kalbi_Rob]

9. What is the NETA Recommended Minimum Insulation Resistance value for a dry-type 4,160V-480V D-D transformer primary winding?
Your Answer: 1 Gigohm
Help: NETA Table 100.5 (2019)

The answers were all in Gigs...1, 5, 10, 20. The cited table doesn't recommend anything beyond Megs...what am I missing?

5000 Megohms is 5 gigohms. For a dry-type transformer rated 601-5000V, minimum resistance is 5000 Megohms or 5 Gigohms

[emark4666]

9. What is the NETA Recommended Minimum Insulation Resistance value for a dry-type 4,160V-480V D-D transformer primary winding?
Your Answer: 1 Gigohm
Help: NETA Table 100.5 (2019)

The answers were all in Gigs...1, 5, 10, 20. The cited table doesn't recommend anything beyond Megs...what am I missing?

5,000 Megohms is 5 Gigohms .

[archieb7]

9. What is the NETA Recommended Minimum Insulation Resistance value for a dry-type 4,160V-480V D-D transformer primary winding?
Your Answer: 1 Gigohm
Help: NETA Table 100.5 (2019)

The answers were all in Gigs...1, 5, 10, 20. The cited table doesn't recommend anything beyond Megs...what am I missing?

5 Gig.

[rmr660]

9. What is the NETA Recommended Minimum Insulation Resistance value for a dry-type 4,160V-480V D-D transformer primary winding?
Your Answer: 1 Gigohm
Help: NETA Table 100.5 (2019)

The answers were all in Gigs...1, 5, 10, 20. The cited table doesn't recommend anything beyond Megs...what am I missing?

1 gig is equal to 1,000 meg. as is 5 gig to 5,000 meg. It is sort of a trick question, just to make you keep on your toes.

[Izeldeen]

9. What is the NETA Recommended Minimum Insulation Resistance value for a dry-type 4,160V-480V D-D transformer primary winding?
Your Answer: 1 Gigohm
Help: NETA Table 100.5 (2019)

The answers were all in Gigs...1, 5, 10, 20. The cited table doesn't recommend anything beyond Megs...what am I missing?

5000Mega=5Gega