New Zealand Gazette – 2008 – No. 24

Page 544

✨ Electricity Network Statistics

NEW ZEALAND GAZETTE, No. 24

15 FEBRUARY 2008

WAIPA NETWORKS LIMITED - LINES BUSINESS

	2007	2006	2005	2004

Disclosure of reliability performance measures.

1 Total number of interruptions

Class A - Planned - by Transpower | 1 | 0 | 0 | 1
Class B - Planned - by Waipa Networks | 61 | 51 | 38 | 50
Class C - Unplanned - by Waipa Networks | 127 | 109 | 131 | 133
Class D - Unplanned - by Transpower | 3 | 3 | 4 | 1
Class E - Unplanned - by Line Owner generator | 0 | 0 | 0 | 0
Class F - Unplanned - by other generation | 0 | 0 | 0 | 0
Class G - Unplanned - by another line owner | 2 | 1 | 1 | 2
Class H - Planned - by another line owner | 0 | 0 | 0 | 0
Class I - Any other loss of supply | 0 | 0 | 0 | 0

Total | 194 | 164 | 174 | 187

2 Interruption targets for 2007 / 2008

Class B - Planned - by Waipa Networks | 75
Class C - Unplanned - by Waipa Networks | 103

3 Average interruption targets for 2007 / 2008 to 2011 / 2012 years

Class B - Planned - by Waipa Networks | 66
Class C - Unplanned - by Waipa Networks | 98

4 *Proportion of Class C interruptions not restored within: (=(a/b)100)**

3 Hours
- a = number of interruptions not restored within 3 hours | 30 | 34 | 34 | 39
- b = Total number of Class C interruptions | 127 | 109 | 131 | 133
- Proportion | 24% | 31% | 26% | 29%
24 Hours
- a = number of interruptions not restored within 24 hours | 0 | 1 | 0 | 1
- b = Total number of Class C interruptions | 127 | 109 | 131 | 133
- Proportion | 0% | 1% | 0% | 1%

5 (a) The total number of faults per 100 circuit kilometres of prescribed voltage electric line

11kV | 9.74 | 8.42 | 9.81 | 10.18

(b) Target for 2007 / 2008 year
11kV | 7.90

(c) Average Target for 2007 / 2008 to 2011 / 2012 years
11kV | 7.52

6 The total number of faults per 100 circuit kilometres of underground prescribed voltage electric line

11kV | 2.70 | 3.03 | 5.45 | 0.00

7 The total number of faults per 100 circuit kilometres of overhead prescribed voltage electric line

11kV | 10.16 | 8.71 | 9.99 | 10.61

VUW Te Waharoa — NZ Gazette 2008, No 24

Gazette.govt.nz — NZ Gazette 2008, No 24

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✨ LLM interpretation of page content

🏭 Notes to Financial Statements for Waipa Networks Limited (continued from previous page)

Domain🏭 Trade, Customs & Industry
KeywordsElectricity, Network Statistics, System Length, Transformer Capacity, Maximum Demand, Retailers, Customers, Waipa Networks Limited

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