GB/T 2681-1981
Abolished
T/BEA 43001-2018
Active
Group standards
T/BEA 43001-2018 Ground voltage testing method
T/BEA 43001-2018 Ground voltage testing method
Price:
$ 20.00
Basic Information
Standard Code:
T/BEA 43001-2018
Standard Type:
Group standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Power testing technology
ICS Name:
Comprehensive Electrical Engineering
Publish Date:
2018-04-17
Implement Date:
2018-05-01
Scope
Scope: This standard specifies the technical requirements, test conditions, test methods, processing of test results, and test cycles for zero-ground voltage in power supply and distribution systems with a frequency of less than 400V. This standard applies to low-voltage distribution cabinets (panels) and terminal power sockets in power supply and distribution systems with a frequency of less than 400V for zero-ground voltage testing; Main technical content: 4. Technical requirements 4.1 Acceptance test of power supply and distribution systems 4.1.1 For three-phase power supply and distribution systems including uninterruptible power supplies (UPS), purified power supplies, and frequency converters, the effective value of zero-ground voltage within the DC~20kHz bandwidth in the output distribution cabinet (panel) under a single-phase output of 50% of the rated current shall be less than 3V. 4.1.2 For three-phase power supply and distribution systems not including uninterruptible power supplies (UPS), purified power supplies, and frequency converters, the effective value of zero-ground voltage within the DC~20kHz bandwidth in the total distribution cabinet (panel) under a single-phase output of 50% of the rated current shall be less than 3V. 4.1.3 For single-phase power sockets, the effective value of zero-ground voltage within the DC~20kHz bandwidth under a single-phase output of 95% of the rated current shall be less than 5V. And it shall be greater than the lower limit voltage UL, which can be estimated according to Formula (1): (1) Where UL is the lower limit voltage of zero-ground voltage for single-phase sockets (V); Id is the rated current of single-phase sockets (A); RN is the resistance of the neutral line (N) between the neutral line and the connection point of the neutral line and ground line in single-phase sockets (Ω). If it is not convenient to measure, it can be estimated as 0.01Ω. 4.2 For interconnected communication and control systems, the power s
Development Information
Related Standards
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GB/T 3926-1983
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GB/T 4064-1983
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GB/T 4064-1983 General guide for designing of electrical equipment to satisfy safety requirements
GB/T 4776-1984
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GB/T 5080.4-1985
Active