Cired

1
Customer Minutes Lost
CBM ON MV POWER CABLE SYSTEMS AND THE USE OF
CABLE DIAGNOSTICS ? YES or NO ?
Switchgear 4 Transformers 2 Secondary 4
Cable and joints 59 Digging 17 Other 14
100
N. van Schaik E.F. Steennis M.G.
Kruithof
Marko Kruithof NL Alpha Session 1 Block 6 paper
1-62
2
Benefits or losses

• Hard costs
• Diagnostic measurements
• Personnel
• Early replacement before failure
• Engineering

• Hard benefits
• Repair costs after failure
• Reduction of follow-up failures
• Loss of kWh sold
• Reduction of claims and penalties

• Soft benefits for utility and/or society
• Loss of goodwill with customers,
• Losses in society because of breakdowns

Marko Kruithof NL Alpha Session 1 Block 6 paper
1-62
3
How to select ?
Risk selection table
Marko Kruithof NL Alpha Session 1 Block 6 paper
1-62
4
The results 200262 cables diagnosed
CBM ON MV POWER CABLE SYSTEMS ! YES !
Marko Kruithof NL Alpha Session 1 Block 6 paper
1-62