Search
| 19 Jul - 26 Jul 2010 | From 1st January 2010 |
|
|---|---|---|
|
Number of high voltage interruptions |
32 | 1703 |
|
Cause of interruption |
% of total |
% of total |
|
Weather (including lightning, vegetation, wind blown debris) |
13% | 22% |
| Third Party (for example vehicles hitting ETSA Utilities equipment, vandalism, tree felling, our underground cables being damaged during excavation by external parties) | 6% | 6% |
| Operational (for safety reasons our equipment is set up to act like a residential safety switch. The system 'trips' when something abnormal has caused it to flash over ie unexpected electrical or mechanical transients) | 0% | 2% |
| Animals (for safety reasons our equipment is set up to act like a residential safety switch. The system 'trips' when something abnormal has caused it to flash over, ie birds, possums, rats and other animals) | 9% | 7% |
| Equipment (when our equipment has been damaged and needs to be repaired) | 34% | 24% |
| Unknown (is when the cause is inconclusive at the time of the report, the cause may be determined at a later date, or there is no evidence of the cause ie a transient fault) | 29% | 32% |
| Other (causes that do not fit into the above categories eg customer's plant, other faults that cause ETSA Utilities equipment to operate) | 9% | 7% |