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New Zealand Gazette – 1999 – No. 124

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✨ Electricity Reliability Performance Measures

17 SEPTEMBER

NEW ZEALAND GAZETTE

Reliability Performance Measures

Total number of interruptions together with a breakdown of the total according to interruptions

TOTAL NUMBER OF INTERRUPTIONS (together with a breakdown of that total according to Interruptions Class)

INTERRUPTION CLASS	Number of Interruptions
	1999
Class A – Planned interruption by Transpower	1
Class B – being a planned interruption by the principal line owner (other than Transpower)	184
Class C – being an unplanned interruption originating within the works of the principal line owner, where those works are used for carrying out line business activities	291
Class D – being an unplanned interruption originating within the works of Transpower, where those works are used for carrying out line business activities	4
Class E – being an unplanned interruption originating within works used, by the principal line owner, for the generation of electricity	0
Class F – being an unplanned interruption originating within works used, by persons other than the principal line owner, for the generation of electricity	0
Class G – being an unplanned interruption caused by another line owner	0
Class H – being a planned interruption caused by another line owner	0
Class I – being an interruption not referred to in any of paragraphs (a) to (h)	0
Total number of Interruptions	480

INTERRUPTION TARGETS

	2000	5 Year Average
Class B – being a planned interruption by the principal owner (other than Transpower)	170	150
Class C – being an unplanned interruption originating within the works of the principal line owner where those works are used for carrying out line business activities	270	250

Restoration Times

The proportion (expressed as a percentage) of the total number of Class C interruptions not restored within:

Time	1999
3 hours	15.4%
24 hours	0%

Total number of faults per 100 circuit kilometres of prescribed voltage electric line	1999	1998	1997	1996
	8.1	8.2	6.9	6.8

Total target number of faults per 100 circuit kilometres of prescribed voltage electric line:	2000	5 Year Average
33kV	2.5	2.3
22kV	5.3	4.9
11kV	8.6	8.1

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VUW Te Waharoa — NZ Gazette 1999, No 124

NZLII — NZ Gazette 1999, No 124

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🏗️ Reliability Performance Measures for Electricity Interruptions

Domain🏗️ Infrastructure & Public Works
KeywordsElectricity, Interruptions, Reliability, Performance Measures, Statistics

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