GB/T 21705-2008
Power monitor for low-voltage electrical apparatus (English Version)

Standard No.

GB/T 21705-2008

Language

Chinese, Available in English version

Release Date

2008

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 21705-2008

Scope

This standard applies to general low-voltage electrical appliance power monitors and fieldbus-based power monitors (hereinafter referred to as monitors). The monitors specified in this standard are suitable for circuits with a reference frequency of 50Hz (or 60Hz), and can detect voltage and current , active power, reactive power, power factor, frequency, electric energy and other parameters, can also be attached with switch input and switch output, through the switch output to achieve a certain protection or control function, and can be used as a monitoring module in conjunction with low-voltage electrical appliances , so that low-voltage electrical appliances without intelligent control have intelligent control and network control functions. This standard does not apply to portable monitors. This standard specifies the classification, working conditions, structure and performance requirements, test methods and test rules, etc. of monitors.

GB/T 21705-2008 Referenced Document

• GB 14048.1-2006 Low-voltage switchgear and controlgear. Part 1: General rules
• GB 4208-1993 Degrees of protection provided by enclosure (IP code)
• GB 9254-1998 Information technology equipment--Radio disturbance characteristics--Limits and methods of measurement
• GB/T 13850-1998 Electrical measuring transducers for converting a.c electrical quantities to analogue or digital singals
• GB/T 15283-1994 Class 0.5、1 and 2 alternating current watthour meters
• GB/T 16935.1-2008 Insulation coordination for equipment within low-voltage systems.Part 1:Principles,requirements and tests
• GB/T 17215-2002 Alternating current static watt-hour meters for active energy(Classes 1 and 2)
• GB/T 17626.2-2006 Electromagnetic compatibility Testing and measurement techniques Electrostatic discharge immunity test
• GB/T 17626.3-2006 Electromagnetic compatibility Testing and measurement techniques Radiated, radio-frequency, electromagnetic field immunity test
• GB/T 2423.1-2001 Environmental testing for electric and electronic products Part 2: Test methods Tests A: Cold
• GB/T 2423.10-1995 Environmental testing for electric and electronic products. Part 2: Test methods. Test Fc and guidance: Vibration (Sinusoidal)
• GB/T 2423.17-1993 Basic environmental testing procedures for electric and electronic products. Test Ka:Salt mist
• GB/T 2423.2-2001 Environmental testing for electric and electronic products Part 2: Test methods Tests B: Dry heat
• GB/T 2423.4-1993 Basic environmental testing procedures for electric and electronic products. Test Db:Damp heat,cyclic
• GB/T 2423.5-1995 Environmental testing for electric and electronic products. Part 2: Test methods. Test Ea and guidance: Shock

GB/T 21705-2008 history

• 2008 GB/T 21705-2008 Power monitor for low-voltage electrical apparatus