ENGLISH – 7
Table 3
ESTIMATED DURABILITY IN RELATION TO THE MANOEUVRE SEVERITY INDEX
Severity index % ROBUS 400 ROBUS 600
ROBUS 600
HS
Durability in cycles
Weight of the leaf (kg)
Up to 200 30 10 20
200 ÷ 400 60 30 30
400 ÷ 500 - 40 40
500 ÷ 600 - 60 60
Leaf length (m)
Up to 4 10 15 15
4 ÷ 6 20 25 25
6 ÷ 8 35 40 40
Other factors contributing to fatigue
(to be considered if their probability exceeds 10%)
Ambient temperature greater than 40°C or
below 0°C, or humidity greater than 80%
10 10 10
Presence of dust and sand 15 15 15
Presence of salinity 20 20 20
Manoeuvre interrupted by photocell 15 20 20
Manoeuvre interrupted by Stop 25 30 30
Speed greater than “L4 fast” 20 25 25
Active surge 25 25 25
Total severity index %:
Note: a severity index exceeding 100% implies that the conditions are beyond the limit of acceptability; in this case, a larger-size model is recommended.
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