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• Limit the total paint film thickness according to the explosion protection group:
– IIA, IIB: Total paint coating thickness ≤ 2 mm
– IIC: Overall coating thickness ≤ 0.2 mm for motors of group II (gas)
• Limit the surface resistance of the paint used:
– Surface resistance ≤ 1 G Ω for motors of groups II and III (gas and dust)
• Charge transfer limit
– 60 nC for Group I or Group IIA devices
– 25 nC for Group IIB devices
– 10 nC for Group IIC devices
– 200 nC for Group III devices (values not valid for strongly charge
• Breakdown voltage ≤ 4 kV for explosion group III (gas and dust)
Suitability test of the paint system for hazardous areas
Suitability certificates for the electrostatic suitability on explosion-protected
machines are available for paint systems ordered as standard. These
certificates are not available for non-standard or customized paint systems.
Take into consideration that the provided evidence is not valid for repaintings.
7.2
轴端密封装配尺寸 " L "
Shaft ∅ mm
Make sure the sealing surface is free of dirt and damage.
Lightly grease the sealing lips.
136
generating processes)
15 ... 25
30 ... 45
50 ... 100
Shaft ∅ mm
40 ... 65
70 ... 100
x mm
L mm
6
6.5
7.5
L mm
11
13.5
Gamma ring
8
8.5
9.5
V ring with protective cap
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