New Zealand Gazette – 2002 – No. 148

Page 3865

✨ Reliability Performance Measures

3.4 RELIABILITY PERFORMANCE MEASURES

For the year ended 31 March 2002

Schedule 1 – PART 5

Interruptions	Ava Target 2003/07	Target 2003	Target 2002	Actual 2001	Actual 2000	Actual 1999	Actual 1998
1-3 Total		2,229	2,258	2,258	2,421	2,157	1,683
Class A		2	-	1	5	6	1
Class B - planned	850	850	971	831	828	1,002	645
Class C - unplanned	1,100	1,200	1,234	1,421	1,077	1,402	1,032
Class D		18	6	-	19	12	5
Class E		3	-	-	-	-	-
Class F		1	-	-	-	-	-
Class G		-	-	-	-	-	-
Class H		-	-	-	-	-	-
Class I		-	-	-	-	-	-

| Proportion of total class C interruptions not restored | | Within 3 hrs | Within 24 hrs |
|----------------------------------------------------------|---------------|---------------|
| a/b * 100 where
a = no. of interruptions not restored within
b = total number of Class C interruptions | 29.82% | 0.32% |
| | 368/1,234 | 4/1,234 |

Faults	Ave Target 2003/07	Target 2003	Target 2002	Actual 2001	Actual 2000	Actual 1999	Actual 1998
Faults per 100 circuit kms
110kV	9.50	10.00	-	8.79	10.47	13.32
66kV	5.00	5.00	6.00	3.99	6.25	1.47	4.87
50kV		-	-	-	-	-	-
33kV	8.00	8.00	8.40	10.91	6.96	5.49	8.03
22kV			-	-	-	-
11kV	9.00	9.00	9.71	10.38	9.05	11.14	14.19
6.6kV			-	-	-	-	-
3.3kV			-	-	-	-	-
230/400 V			-	-	-	-	-

| Faults per 100 circuit kms (underground) | | Ave Target 2003/07 | Target 2003 | Target 2002 | Actual 2001 | Actual 2000 | Actual 1999 |
|----------------------------------------------|--------------------|-------------|-------------|-------------|-------------|-------------|
| 110kV | 4.20 | 5.00 | 5.63 | 4.73 | | 6.41 |
| 66kV | | - | - | - | - | - |
| 50kV | | - | - | - | - | - |
| 33kV | 2.67 | 5.70 | 4.66 | 2.72 | | 2.18 |
| 22kV | | | - | - | - | |
| 11kV | 4.38 | 5.01 | 5.76 | 4.95 | | 6.78 |
| 6.6kV | | | - | - | - | - |
| 3.3kV | | | - | - | - | - |
| 230/400 V | | | - | - | - | - |

| Faults per 100 circuit kms (overhead) | | Ave Target 2003/07 | Target 2003 | Target 2002 | Actual 2001 | Actual 2000 | Actual 1999 | Actual 1998 |
|----------------------------------------------|--------------------|-------------|-------------|-------------|-------------|-------------|-------------|
| 110kV | 11.23 | 12.00 | - | 9.77 | 12.06 | | 14.58 |
| 66kV | 6.00 | | 3.99 | 6.25 | 3.47 | | 4.87 |
| 50kV | | - | - | - | - | - | - |
| 33kV | 10.10 | 12.35 | - | 7.74 | 6.25 | | 8.81 |
| 22kV | | - | - | - | - | - | - |
| 11kV | 11.45 | 12.00 | 10.08 | 12.88 | | 15.62 | |
| 6.6kV | | | - | - | - | | |
| 3.3kV | | | - | - | - | | |
| 230/400 V | | | - | - | - | | |

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