GB 6450-1986
Replaced
GB/T 20840.103-2020
Active
National standards
GB/T 20840.103-2020 Instrument transformers—Part 103:The use of instrument transformers for power quality measurement
GB/T 20840.103-2020 Instrument transformers—Part 103:The use of instrument transformers for power quality measurement
Price:
$ 155
Basic Information
Standard Code:
GB/T 20840.103-2020
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Transformer
ICS Name:
Transformers, reactors, and inductors
Publish Date:
2020-03-31
Implement Date:
2020-10-01
Pages:
77 pages
Scope
This part of GB/T 20840 provides definitions and explanations of power quality parameters, the impact of transformers on power quality measurement, and guidance for power quality testing. This part is applicable to electromagnetic and electronic transformers operating in the AC power (supply) system at 50 Hz, which have analog or digital output for use in electrical measurement instruments for measuring and evaluating power quality parameters. This part aims to provide guidance for using high-voltage transformers to measure power quality parameters. The power quality parameters in this part include grid frequency, supply voltage and current amplitude, flicker, supply voltage sag and surge, voltage interruption, transient voltage, supply voltage imbalance, voltage and current harmonics and interharmonics, signal voltage superimposed on the supply voltage, and rapid voltage changes. Note: The voltage ranges of low-voltage, medium-voltage, and high-voltage electromagnetic transformers mentioned in this part are as follows: low voltage refers to voltages below 1 kV AC, medium voltage refers to voltages above 1 kV and below 52 kV AC, and high voltage refers to voltages above 52 kV AC.
Development Information
Same series standard
Referenced Standards
GB/T 6592-2010 Electrical and electronic measurement equipment—Expression of performance
GB/T 17626.7-2017 Electromagnetic compatibility—Testing and measurement techniques—General guide on harmonics and interharmonics measurements and instrumentation,for power supply systems and equipment connected thereto
GB/T 17626.15-2011 Electromagnetic compatibility—Testing and measurement techniques—Flickermeter—Functional and design specifications
GB/T 17626.30-2012 Electromagnetic compatibility—Testing and measurement techniques—Power quality measurement methods
GB/T 18039.3-2017 Electromagnetic compatibility—Environment—Compatibility levels for low-frequency conducted disturbances and signalling in public low-voltage power supply systems
GB/Z 18039.5-2003 Electromagnetic compatibility—Environment—Electromagnetic environment for low-frequency conducted disturbances and signalling in public power supply systems
GB/T 18216.12-2010 Electrical safety in low voltage distribution systems up to 1 000 V a.c.and 1 500 V d.c.—Equipment for testing, measuring or monitoring of protective measures—Part 12:Performances measuring and monitoring devices (PMD)
GB/T 20840.8-2007 Instrument transformers—Part 8:Electronic current transformers
EN 50160:2007
Adopt standards
IEC TR 61869-103:2012
Related Standards
GB/T 7449-1987
Replaced
GB/T 7449-1987 Guide to the lightning impulse and switching impulse testing of power transformers and reactors
GB 13028-1991
Abolished
GB 13028-1991 Isolating transformers and safety isolating transformers Requirements
GB/T 14006-1992
Active
GB/T 14006-1992 Outline dimensions of transformers and inductors for use in telecommunication and electronic equipment—Part 1:Transformers and inductors using YEI-1 laminations
GB/T 14860-1993
Replaced
GB/T 14860-1993 Generic specification for transformers and inductors for use in telecommunication and electronic equipment
GB/T 15164-1994
Replaced