Electricity Asset Management Plan 2019-2029
120
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area on the other hand is more densely developed and hence has a larger population of transformers 300 kVA and above as is evident from the age profile graphs below. The table and three graphs below provide data for our 11 kV and 22 kV distribution ground mounted transformers.
DESCRIPTION
AUCKLAND
NORTHERN
No of distribution ground mounted transformers 11 kV / 415 V, 10 kVA to 250 kVA No of distribution ground mounted transformers 11 kV / 415 V, > 250 kVA to 500 kVA No of distribution ground mounted transformers 11 kV / 415 V, > 500 kVA to 750 kVA No of distribution ground mounted transformers 11 kV / 415 V, 750 kVA No of distribution ground mounted transformers 11 kV / 415 V, 1000 kVA No of distribution ground mounted transformers 11 kV / 415 V, 1500 kVA No of distribution ground mounted transformers 22 kV / 415 V, 250 kVA No of distribution ground mounted transformers 22 kV / 415 V, 500 kVA No of distribution ground mounted transformers 22 kV / 415 V, 750 kVA No of distribution ground mounted transformers 22 kV / 415 V, 1000 kVA No of distribution ground mounted transformers 22 kV / 415 V, 1500 kVA
2417
6020
3364
1071
542
157
331
125
6
2
2
0
1
0
64
0
54
0
53
0
5
0
Total no of distribution ground mounted transformers
6839
7375
Table 4-20 Key statistics for Distribution Ground Mounted Transformers
Figure 4-29 Age Profile for 11 kV Distribution Ground Mounted Transformers - Auckland
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