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37 Posts in this encyclopedia categoryIEC
Abbreviation for International Electrotechnical Commission or International Electrotechnical Committee. Standards committee for the international standardisation of electrical material or international commission for standardisation in the field of electrical engineering and electronics. (All information without guarantee)
IEC 60 603-2
IEC 60 603-2: Printed circuit connectors for frequencies below 3 MHz - Part 2: Design specification for quality-rated indirect printed circuit connectors, pitch 2,54 mm (0,1 in), with common mounting features. (All specifications without guarantee)
IEC 60 807
IEC 60 807: Rectangular connectors for frequencies below 3 MHz; Part 1: Generic specification; General requirements. (All data without guarantee)
IEC 61 076-4-107
IEC 61 076-4-107: Connectors for electronic equipment - Part 4-107: Connectors for printed circuits with rated quality; design specification for shielded indirect connectors with 2.0 mm pitch, free parts with solder and press-fit terminations for printed circuit boards, fixed parts with non-accessible insulation displacement and crimp terminations. (All specifications without guarantee)
IEMMEQU harmonisation marking
The IEMMEQU is a harmonisation mark. The acronym IEMMEQU stands for Instituto Italiano del Marchio Qualita. The old name for IEMMEQU was IMQ and was also an Italian certification body. (All information without guarantee)
IN EN 60352-2
Solderless connections - Part 2: Crimp connections - General requirements; test methods and application notes. (All information without guarantee)
Inductance
Inductance is the inductive resistance of a circuit (inductive reactance). (All data without guarantee)
Industrial Ethernet
Term for Ethernet in automation technology. Due to the industrial operating environment, network components must fulfil extended temperature ranges and increased requirements for availability and network security. (All information without guarantee)
Inhomogeneous field
Electric field with essentially non-constant voltage gradients between the electrodes (non-uniform field). (All data without guarantee)
Inner conductor
Central conductor in the core of coaxial pairs. The inner conductor (also known as the core) is usually a rigid copper conductor. This has different diameters depending on the design of the coaxial cable. The inner conductor is surrounded at a constant distance by a hollow cylindrical outer conductor and can be made of different materials. (All information without guarantee)
Insulating body
Part of a connector, usually identical to the contact insert. (All information without guarantee)
Insulating cover
The insulating sheath is the tubular insulation surrounding the conductor. It provides separation from other electrical conductors and protection against contact. It also ensures the mechanical stability and good electrical properties of the conductor. (All information without guarantee)
Insulation
The insulation surrounds the conductor and provides electrical isolation from other conductors. (All data without guarantee)
Insulation
Non-conductive intermediate layer and/or cover for separation and protection against contact with live parts. (All data without guarantee)
Insulation resistance
Insulating materials have a very high resistance to the flow of electrical current. It is inversely proportional to the cable length. The insulation resistance is a measure of the quality of the insulating material between two conductors or between a conductor and the shielding. The insulation material essentially determines the insulation resistance. It is not so much the insulation thickness that is decisive, but the material properties. The insulation resistance depends on the length. It is specified in "c". Its values should be 1 GOhm/km. The insulation resistance therefore decreases over longer distances. (All data without guarantee)
Insulation voltage
Also known as rated insulation voltage. It refers to the insulation within a circuit, between electrical circuits and between active parts and the body. The rated insulation voltage is the voltage to which insulation tests and creepage distances refer. The highest operating voltage must never be greater than the insulation voltage. For devices without a specified insulation voltage, the highest operating voltage is to be assumed as the insulation voltage. (All data without guarantee)
Intended use
Applicable conditions that are within the permissible rated values, ambient conditions and properties specified in the design specification or by the manufacturer. (All data without guarantee)
Interference
During interference, several waves are superimposed in space. Two waves of the same amplitude, phase and wavelength amplify each other. If, on the other hand, wavelengths are shifted against each other, they cancel each other out. (All information without guarantee)
Interference immunity
A device, installation or system is influenced by the environment. (All information without guarantee)
Interference, inductive
Inductive (magnetic) interference occurs between two current-carrying conductors. The magnetic effect caused by the currents induces an interference voltage. Typical sources of interference are, for example: motors, mains cables running in parallel and HF signalling cables. (All information without guarantee)
Intrinsically safe
Electrical installation that is inherently safe from an explosion hazard point of view. This means: in which no ignitable sparks can occur. All parts, including cables and wires, must be blue in colour (RAL 5015). (All information without guarantee)
Iris feather
Special spring in emv connector for shield contacting. (All data without guarantee)
ISO/OS reference model
Model for describing communication in a network. The functionality is described in 7 layers. Adaptation to the physical transmission medium takes place in the lowest layer (physical layer). (All information without guarantee)