GroundThe reference point in an electrical circuit from which voltages are measured, a common return path for electric current, or a direct physical connection to the Earth.
GTEM CellGigahertz Transverse ElectroMagnetic cell is an electromagnetic compatibility (EMC) test environment often used in radiated-immunity and radiated-emissions tests. Its unique characteristics allow for the performance of fast and efficient EMC radiated tests at a convenient location, without(...)
HALT TestingHighly accelerated life test / is a stress testing methodology for accelerating product reliability during the engineering development process. HALT testing is currently in use by most major manufacturing organizations to improve product reliability in a variety of industries, including(...)
Harmonic DistortionMeasurement of the harmonic distortion present and is defined as the ratio of the sum of the powers of all harmonic components to the power of thefundamental frequency.
Hearing Aid CompatibilityThe Federal Communications Commission (FCC) defines Hearing Aid Compatibility (HAC) for wireless devices in terms of two parameters; radio-frequency (RF) emissions and telecoil coupling. The Hearing Aid Compatibility Act requires the FCC to ensure all wireline telephones manufactured or(...)
HACThe Federal Communications Commission (FCC) defines Hearing Aid Compatibility (HAC) for wireless devices in terms of two parameters; radio-frequency (RF) emissions and telecoil coupling. The Hearing Aid Compatibility Act requires the FCC to ensure all wireline telephones manufactured or(...)
HertzThe number of cycles per second of a periodic phenomenon.
HzThe number of cycles per second of a periodic phenomenon.
Horn AntennaAn antenna that consists of a flaring metal waveguide shaped like a horn to direct radio waves in a beam.
IEC 60034-2-1This standard is intended to establish methods of determining efficiencies from tests, and also to specify methods of obtaining specific losses. This standard applies to d.c. machines and to a.c. synchronous and induction machines of all sizes within the scope of IEC 60034-1.
IEC 60041Specifies methods for any size and type of impulse or reaction turbine, storage pump or pump turbine. Determines whether the contract guarantees have been fulfilled and deals with the rules governing these tests as well as the methods of computing the results and the content and style of the(...)
IEC 60045-1Applies to steam turbines driving generators for electrical power services. Includes provisions relevant to turbines for other applications.
IEC 60050-195It has the status of a horizontal standard in accordance with IEC Guide 108.
IEC 60050-394This part of IEC 60050 gives the general terminology used for instruments (in nuclear instrumentation). The terminology related to physical phenomena and basic concepts of nuclear instrumentation is developed in another part of IEV.
IEC 60050-415It has the status of a horizontal standard in accordance with IEC Guide 108.
IEC 60050-617IEC 60050-617:2009 has been published as a consequence of deregulation of the electricity market, it appeared necessary to establish a common glossary with those terms defining actors in the market, interface between actors and the technical or financial terms having a specific meaning in the(...)
IEC 60050-651It has the status of a horizontal standard in accordance with IEC Guide 108.
IEC 60050-821It has the status of a horizontal standard in accordance with IEC Guide 108.
IEC 60065IEC 60065:2014 applies to electronic apparatus designed to be fed from the mains, from a supply apparatus, from batteries or from remote power feeding and intended for reception, generation, recording or reproduction of audio, video and associated signals. It also applies to apparatus designed(...)
IEC 60076-10This standard defines sound pressure and sound intensity measurement methods from which sound power levels of transformers, reactors and their associated cooling devices are determined. The methods are applicable to transformers, reactors and their cooling devices - either fitted to or(...)
