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New Zealand Gazette – 2000 – No. 119

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✨ Reliability Performance Measures

3034

NEW ZEALAND GAZETTE

No. 119

B. RELIABILITY PERFORMANCE MEASURES (1999 REGULATIONS)

B1. Total number of interruptions, together with a breakdown of that total according to interruption class.

Interruption Class	Number of Interruptions
	2000	1999	1998	1997
MainPower
Planned Shut-Down (Class B)	106	111	180	194
Unplanned Interruption (Class C)	189	143	553	552
Trans Power
Planned Shut-Down (Class A)	1	1	-	1
Unplanned Interruption (Class D)	1	-	-	7
Generation ECNZ
Unplanned Interruption (Class E)	-	-	-	-
Generation Other
Unplanned Interruption (Class F)	-	-	-	-
Other
Other Interruptions (Class G)	-	-	-	-
Unplanned Interruption (Class G)	-	-	-	-
Total Interruptions	297	255	733	754

B2. The total number of faults per 100 circuit kilometres of prescribed voltage electric line.

5.51 faults 4.27 faults 16.62 Faults 16.54 Faults

B3. The total number of faults per 100 circuit kilometres of underground prescribed voltage electric line, together with a breakdown of that total according to different nominal line voltages.

Nominal Voltage	Faults per 100 km
	2000	1999	1998	1997
33 kV	-	-	43.80	48.85
11 kV	7.89	1.17	8.88	10.66
TOTAL	7.69	1.14	9.87	11.68

B4. The total number of faults per 100 circuit kilometres of overhead prescribed voltage electric line, together with a breakdown of that total according to different nominal line voltages.

Nominal Voltage	Faults per 100 km
	2000	1999	1998	1997
33 kV	0.75	3.35	11.71	6.98
11 kV	5.86	4.40	17.14	17.37
TOTAL	5.45	4.31	16.73	16.60

B5. The SAIDI for the total of interruptions:

116.94 204.71 225.05 281.85

B6. The SAIDI for the total number of interruptions within each interruption class:

Network or Generation Owner	Classification	Minutes per Connected Customer
		2000	1999	1998	1997
MainPower	Planned Shut-Down (Class B)	22.06	86.98	50.00	61.32
	Unplanned Interruption (Class C)	71.55	103.27	175.05	130.28
Trans Power	Planned Shut-Down (Class A)	22.27	14.46	-	17.47
	Unplanned Interruption (Class D)	1.06	-	-	72.77
Generation ECNZ	Unplanned Interruption (Class E)	-	-	-	-
Generation Other	Unplanned Interruption (Class F)	-	-	-	-
Other	Other Interruptions (Class G)	-	-	-	-
	Unplanned Interruption (Class G)	-	-	-	-

B7. The SAIFI for the total number of interruptions:

1.77 1.83 3.68 4.38

VUW Te Waharoa — NZ Gazette 2000, No 119

Gazette.govt.nz — NZ Gazette 2000, No 119

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✨ LLM interpretation of page content

🏗️ Disclosure of Reliability Performance Measures by MainPower New Zealand Ltd (continued from previous page)

Domain🏗️ Infrastructure & Public Works
KeywordsElectricity, Reliability, Performance Measures, Faults, Interruptions, MainPower New Zealand Ltd

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