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Current Ratings - Conversion Factors: for deviating ambient temperatures

Conversion Factors for deviating ambient temperatures
Permissible operating temperature 40°C 60°C 70°C 80°C 85°C 90°C
Ambient temperature Conversion factors
10°C 1.73 1.29 1.22 1.18 1.17 1.15
15°C 1.58 1.22 1.17 1.14 1.13 1.12
20°C 1.41 1.15 1.12 1.10 1.09 1.08
25°C 1.22 1.08 1.06 1.05 1.04 1.04
30°C 1.00 1.00 1.00 1.00 1.00 1.00
35°C 0.71 0.91 0.94 0.95 0.95 0.96
40°C - 0.82 0.87 0.89 0.90 0.91
45°C - 0.71 0.79 0.84 0.85 0.87
50°C - 0.58 0.71 0.77 - 0.82
55°C - 0.41 0.61 0.71 - 0.76
60°C - - 0.50 0.63 - 0.71
65°C - - 0.35 0.55 - 0.65
70°C - - - 0.45 - 0.58
75°C - - - 0.32 - 0.50
80°C - - - - - 0.41
85°C - - - - - 0.29
Conversion factors for multi conductor cables with cross-section up to 10 mm²
Number of loaded conductors Conversion factors
5 0.75
7 0.65
10 0.55
14 0.50
19 0.45
24 0.40
40 0.35
61 0.30
Conversion factors
for reeled cables

Number of layers on drums 1 2 3 4 5
Conversion
factors
0.80 0.61 0.49 0.42 0.38
Note: Conversion factor for spiral-reeling = 0.80
Conversion factors for heat-resistant cables
Permissible operating temperature 80°C 90°C 110°C 135°C 180°C
Ambient temperature Conversion factors
up to 50°C 1.00 1.00 1.00 1.00 1.00
55°C 0.91 0.94 1.00 1.00 1.00
60°C 0.82 0.87 1.00 1.00 1.00
65°C 0.71 0.79 1.00 1.00 1.00
70°C 0.58 0.71 1.00 1.00 1.00
75°C 0.41 0.61 1.00 1.00 1.00
80°C - 0.50 1.00 1.00 1.00
85°C - 0.35 0.91 1.00 1.00
90°C - - 0.82 1.00 1.00
95°C - - 0.71 1.00 1.00
100°C - - 0.58 0.94 1.00
105°C - - 0.41 0.87 1.00
110°C - - - 0.79 1.00
115°C - - - 0.71 1.00
120°C - - - 0.61 1.00
125°C - - - 0.50 1.00
130°C - - - 0.35 1.00
135°C - - - - 1.00
140°C - - - - 1.00
145°C - - - - 1.00
150°C - - - - 1.00
155°C - - - - 0.91
160°C - - - - 0.82
165°C - - - - 0.71
170°C - - - - 0.58
175°C - - - - 0.41
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Sealcon is the Exclusive Importer of HUMMEL products. We offer over 6,000 different Types and Sizes of RoHS Compliant Liquid Tight Strain Relief Fittings, Cord Grips, Cable Glands, Circular Connectors, Conduit System, Industrial Enclosures and Other Related Cable Management Products which are rated the best in the industry.
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