82.031.0101.0 WIELAND ELECTRIC, 82.031.0101.0 Datasheet - Page 814

• 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
facts
Tables, technical data, explanations
2.2.2.1 Impulse withstand categories (overvoltage categories)
Impulse withstand categories are means to distinguish degrees of availability of equipment with regard to
required expectations on continuity of service and on an acceptable risk of failure. By selection of impulse
withstand levels of equipment, insulation coordination can be achieved in the whole installation, reducing the
risk of failure to an acceptable level providing a basis for overvoltage control.
A higher characteristic numeral of an impulse withstand category indicates a higher specific impulse withstand of
the equipment and offers a wider choice of methods for overvoltage control.
The concept of impulse withstand categories is used for equipment energised directly from the mains. The
application of impulse withstand categories is based on the requirement with regard to additional protection
against overvoltages as specified in IEC 364-4-443.
2.2.2.1.1 Equipment energized directly from the low-voltage
812
e. g. 800 V/8 kV/3
With this data, the rated impulse voltage is given priority over the overvoltage category. Therefore it is left to
the users to decide which overvoltage category to select based on the requirements. If no rated voltage is
indicated, the voltage data refer to overvoltage category III and degree of pollution 3.
It is imperative that the indicated wire strip lengths are observed. When connecting the wire, care must be
taken that the insulation material is fed as closely as possible to the metal clamping body, as otherwise the
creepage distances and clearances might be reduced.
Technical Committees shall specify the overvoltage category as based on the following general explanation of
overvoltage categories (see also IEC 364-4-443):
-– Equipment of overvoltage category IV is for use at the origin of the installation.
The rating is given according to the new regulation in the format
Rated voltage/Rated impulse voltage/Degree of pollution
Note: Overvoltages of atmospheric origin are not significantly physically attenuated downstream in most
– Equipment of overvoltage category III is equipment in fixed installations and for cases where the
– Equipment of overvoltage category II is energy-consuming equipment to be supplied from the fixed
– Equipment of overvoltage category I is equipment for connection to circuits in which measures are taken
Note: Examples of such equipment are electricity meters and primary overcurrent protection equipment
reliability and the availabilty of the equipment is subject to special requirements.
Note: Examples of such equipment are switches, in the fixed installation and equipment for industrial use
installation.
Note: Examples of such equipment are appliances, portable tools and other household and similar loads.
If such equipment is subjected to special requirements with regard to reliability and availability, overvoltage
category III applies.
to limit transient overvoltages to an appropriately low level.
Note: Examples are protected electronic circuits.
installations. Investigations have shown that the concept of a probabilistic approach has proven
reasonable and useful.
with permanent connection to the fixed installation.
& DATA