82.031.0101.0 WIELAND ELECTRIC, 82.031.0101.0 Datasheet - Page 815

• Manufacturer Part Number: 82.031.0101.0
• Description: COUPLING MODULE
• Manufacturer: WIELAND ELECTRIC

Specifications of 82.031.0101.0

• Connector Type: Modular
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

facts
2.5 Pollution
2.5.1 Degrees of pollution in the micro-environment
2.5.2 Coordination with macro-environment
2.7 Insulation material (excerpt)
The micro-environment determines the effect of pollution on the insulation. The macro-environment, however,
has to be taken into account when considering the micro-environment.
Means may be provided to reduce pollution at the insulation under consideration by effective use of
enclosures, encapsulation or hermetic sealing. Such means to reduce pollution may not be effective when the
equipment is subject to condensation or if, in normal operation, it generates pollutants itself.
Small clearances can be bridged completely by solid particles, dust and water and therefore minimum
clearances are specified where pollution may be present in the micro-environment.
Note 1:
Note 2:
For the purpose of evaluating creepage distances and clearances, the following four degrees of pollution in the
micro-environment are established:
– Pollution degree 1
– Pollution degree 2
– Pollution degree 3
– Pollution degree 4
This sub-clause is under consideration.
The insulation material is divided into the following four groups according to their CTI (Comparative Tracking
Index):
Insulation I:
Insulation II:
Insulation III a:
Insulation III b: 100 ≤ CTI < 175
The comparative tracking index must be defined according to DIN IEC 112/VDE 0303 part 1 on specimens
made specially for this purpose with test solution A.
Note:
No pollution or only dry, non-conductive pollution occurs. The pollution has no influence.
Only non-conductive pollution occurs except that occasionally a temporary conductivity caused by
condensation is to be expected.
Conductive pollution occurs or dry, non-conductive pollution occurs which becomes conductive due to
condensation which is to be expected.
The pollution generates persistent conductivity caused by conductive dust or by rain or snow.
The proof-tracking index (PTI) is also used to identify the tracking characteristics of materials.
A material may be included in one of the four groups given above on the basis that its PTI,
established by the methods of IEC 112 using solution A, is equal to or greater than the lower
value specified for the group.
Pollution will become conductive in the presence of humidity. Pollution caused by contamina-
ted water, soot, metal or carbon dust is inherently conductive.
Conductive pollution by ionized gases and metallic depositions occurs only in specific
instances, for example in arc chambers of switchgear or controlgear, and is not covered by
this part of IEC 664.
600 ≤ CTI
400 ≤ CTI < 600
175 ≤ CTI < 400
813