PDF Actual Sample: GB/T 31983.11-2015 (PDF-excerpt released/modified date: 2020-09-12/2020-09-12. Translated/reviewed by: Wayne Zheng et al.)
| Standard ID | GB/T 31983.11-2015 (GB/T31983.11-2015) |
| Description (Translated English) | Narrow band power line communication over low-voltage mains. Part 11: 3 kHz to 500 kHz frequency bands and classifications, limits of output level and electromagnetic disturbances |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | N22 |
| Classification of International Standard | 17.220.20 |
| Word Count Estimation | 23,241 |
| Date of Issue | 2015-09-11 |
| Date of Implementation | 2016-04-01 |
| Quoted Standard | GB/T 4365; GB/T 6113.101-2008; GB/T 6113.102-2008; GB/T 6113.104-2008; GB/T 6113.202-2008; GB 9254-2008 |
| Drafting Organization | Harbin Institute of Electrical Instrument; ; Heilongjiang Electric Power Co., Ltd. Metering Center; ; Dinkum Qingdao Chongqing electric power company State Grid Electric Power Research Institute; Qingdao Neusoft carrier Technology Co., Ltd.; China State Grid Electric Power Research Institute of Heilongjiang Electric Power Co., Ltd. ZTE Corporation; Terry Shenzhen aerospace Electronics Co., Ltd., Czech Republic; Yunnan Electric power Research Institute (Group) Co., Ltd. Electric power Research Institute; Risecomm Microelectronics (Shenzhen) Co., Ltd; Beijing Fuxing Xiaocheng electronic Technology Co., Ltd; Shenzhen City of Microelectronics Co., Ltd.; Microelectronics Co., Ltd. Zhuhai Hui; Sichuan Electric power metering Center |
| Administrative Organization | National Electrical Instrument Standardization Technical Committee (SAC/TC 104) |
| Regulation (derived from) | National Standard Announcement 2015 No.25 |
| Proposing organization | China Machinery Industry Federation |
| Issuing agency(ies) | Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China |
| Summary | This Standard specifies the frequency band divided into different applications, the output level of the limits of available band, conduction and radiation disturbance limits, and gives the measurement method. This Standard does not specify the signal modulation method, encoding method, or features, nor does it include environmental requirements and testing. This Standard applies to the use of 3kHz ~ 500kHz frequency range signal transmission of information on the electrical equipment or electrical installations on the user side of the low-voltage distribution systems. |
ENGLISH: GB/T 31983.11-2015 (Translated) GB/T 31983.11-2015
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 17.220.20
N 22
Narrow Band Power Line Communication over
Low-Voltage Mains – Part 11: 3 kHz to 500 kHz
Frequency Bands and Classifications, Limits of
Output Level and Electromagnetic Disturbances
低压窄带电力线通信 第 11 部分:
3kHz~500kHz 频带划分, 输出电平和电磁骚扰限值
ISSUED ON: SEPTEMBER 11, 2015
IMPLEMENTED ON: APRIL 01, 2016
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 6
4 Classification and Application of Frequency Band ... 7
4.1 Overview ... 7
4.2 3kHz~95kHz frequency band ... 7
4.3 95kHz~150kHz frequency band ... 7
4.4 150kHz~500kHz frequency band ... 8
5 Output Level ... 8
5.1 General requirements ... 8
5.2 Output signal measurement ... 10
5.3 Maximum output level ... 11
5.4 Output level identification ... 21
6 Limits of Electromagnetic Disturbance ... 21
6.1 Overview ... 21
6.2 Conducted disturbance limit ... 22
6.3 Limit of radiated disturbance field strength ... 23
6.4 Disturbance power limit ... 23
6.5 Other requirements to limit disturbance ... 24
7 Test Conditions ... 24
8 Safety Warning ... 25
Appendix A (Normative) Attenuation Characteristics of Measuring Instruments
above 150kHz ... 27
Appendix B (Normative) Measurement Method (3kHz~30MHz) – Artificial Mains
Network ... 29
Appendix C (Informative) Design of Artificial Mains Network Used to Indicate
the Signal Transmission Performance ... 30
Narrow Band Power Line Communication over
Low-Voltage Mains – Part 11: 3 kHz to 500 kHz
Frequency Bands and Classifications, Limits of
Output Level and Electromagnetic Disturbances
1 Scope
This Part of GB/T 31983 specifies the frequency band classification for different
applications, the output level limit in the available frequency band, the conducted and
radiated disturbance limit; and gives the measurement method.
This Part does not specify signal modulation methods, coding methods or functional
characteristics, nor does it include environmental requirements and tests.
This Part is applicable to electrical equipment that uses signals in the frequency range
of 3kHz ~ 500kHz for information transmission on low-voltage power distribution
systems or on user-side power devices.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB/T 4365 Electrotechnical Terminology - Electromagnetic Compatibility
GB/T 6113.101-2008 Specification for Radio Disturbance and Immunity Measuring
Apparatus and Methods - Part 1-1: Radio Disturbance and Immunity Measuring
Apparatus - Measuring Apparatus
GB/T 6113.102-2008 Specification for Radio Disturbance and Immunity Measuring
Apparatus and Methods - Part 1-2: Radio Disturbance and Immunity Measuring
Apparatus - Ancillary Equipment - Conducted Disturbance
GB/T 6113.104-2008 Specification for Radio Disturbance and Immunity Measuring
Apparatus and Methods - Part 1-4: Radio Disturbance and Immunity Measuring
Permanently installed AC power network system consisting of wires or cables, but does
not include flexible cables that users can connect or disconnect.
3.9 Sensitive equipment
A device that is subject to interference may cause adverse effects and cause injury.
4 Classification and Application of Frequency Band
4.1 Overview
In order to ensure the coexistence between different applications and prevent mutual
interference, this Part establishes various applications by classifying the frequency
bands.
NOTE: If it causes interference to radio communication services, additional provisions may be
adopted.
4.2 3kHz~95kHz frequency band
This frequency band is suitable for monitoring and controlling electrical equipment on
low-voltage power distribution networks. The main equipment includes various smart
metering instruments and monitoring and control terminals or devices.
NOTE: A typical application example of this frequency band is the collection of electricity
consumption information of the Advanced Metering Infrastructure (AMI).
4.3 95kHz~150kHz frequency band
This frequency band is suitable for:
a) Monitor and control low-voltage electrical equipment in residential, commercial
or industrial premises;
b) Monitor and control electrical equipment installed or connected to the low-voltage
power distribution network outside the site.
NOTE 1: Typical application examples of a) may be intelligent buildings, intelligent homes and
home energy management.
NOTE 2: Typical application examples of b) may be street lamp control, energy metering, and
electric vehicle charging and discharging.
The equipment used in this frequency band is divided into Class-122 and Class-134
equipment. According to the specified measurement method, the maximum output
level of Class-122 equipment is 122dB(µV); and the maximum output level of Class-
In order to prevent damage to the equipment under test or test instrument, it shall be
ensured that the power supply voltage applied to the equipment under test meets the
power supply voltage range requirements specified by the equipment manufacturer.
Generally, differential mode signaling shall be used. The common-mode signaling on
the fixed mains network can only be used in commercial or industrial premises and
work under the conditions described in Clause 7.
If the common mode signal sent from the fixed power outlet to the fixed mains network
is lower than the out-of-band disturbance limit specified in Clause 6, the common-mode
signaling is allowed on a flexible cable.
5.1.2 Single-phase equipment measurement circuit
To measure the output level in the frequency range of 3kHz~9kHz, an artificial mains
network (AMN, Artificial Mains Network) that meets the impedance characteristics
described in Figure 2 shall be used.
To measure the output level in the frequency range of 9kHz~150kHz, a single-phase
artificial mains network complying with 4.2 of GB/T 6113.102-2008 shall be used.
To measure the output level in the frequency range of 150kHz~500kHz, a single-phase
artificial mains network complying with 4.3 of GB/T 6113.102-2008 shall be used.
NOTE: If the impedance (modulus and phase angle) of the single-phase artificial mains network
complying with 4.2 of GB/T 6113.102-2008 in the frequency range of 150kHz ~ 500kHz meets
the impedance requirements of 4.3 in GB/T 6113.102-2008; then the former single-phase
artificial mains network is also suitable for the measurement of the frequency range of
150kHz~500kHz. Pay attention to the NOTE of 4.2 in GB/T 6113.102-2008.
5.1.3 Three-phase equipment measurement circuit
To measure the output level in the frequency range of 3kHz~9kHz, a three-phase
artificial mains network that meets the impedance characteristics described in Figure
2 shall be used.
To measure the output level in the frequency range of 9kHz~150kHz, a three-phase
artificial mains network conforming to 4.2 of GB/T 6113.102-2008 shall be used.
To measure the output level in the frequency range of 150kHz~500kHz, a three-phase
artificial mains network conforming to 4.3 of GB/T 6113.102-2008 shall be used.
NOTE 1: The NOTE of 5.1.2 also apply.
If the user manual of the equipment clearly indicates that the three-phase equipment
can connect all phase terminals to the same phase line as a single-phase equipment,
the difference in load conditions between three-phase and single-phase may cause
a) The signal bandwidth <5kHz. The output level measured on any phase line shall
not exceed 128dB(µV) at 9kHz, and shall not exceed 114dB(µV) at 95kHz. It
decreases linearly with the logarithm of the frequency between 9kHz and 95kHz.
b) The signal bandwidth is ≥5kHz. The output level measured on any phase line
shall not exceed 128dB(µV). In addition, when using a 200Hz bandwidth peak
detector to measure, any part of the signal spectrum shall not exceed 114dB(µV).
NOTE: NOTE 3 of 5.1.3 also applies.
5.3.2.3 95kHz~150kHz frequency band
The artificial mains network conforming to the impedance characteristics of Figure 1a)
of 4.2 in GB/T 6113.102-2008 shall be used for measurement, see 5.3.1.2 for the
description of the artificial mains network.
Measurement shall be made according to 5.2.2; the equipment connection is shown in
Figure 7.
The output level shall be limited according to the type of used equipment as follows:
a) Class-122 equipment. The output level measured on any phase line shall not
exceed 116dB(µV).
b) Class-134 equipment. The output level measured on any phase line shall not
exceed 128dB(µV).
NOTE: NOTE 3 of 5.1.3 also applies.
5.3.2.4 150kHz~500kHz frequency band
The artificial mains network conforming to the impedance characteristics of Figure 1b)
of 4.3 in GB/T 6113.102-2008 shall be used for measurement, see 5.3.1.4 for the
description of the artificial power supply network.
Measurement shall be made according to 5.2.2; the equipment connection is shown in
Figure 7.
The output level measured on any phase line shall not exceed 128dB(µV). In addition,
when using a 200Hz bandwidth peak detector to measure, any part of the signal
spectrum shall not exceed 114dB(µV).
NOTE: NOTE 3 of 5.1.3 also applies.
5.3.3 Three-phase equipment transmits simultaneously between phase lines (no
neutral line)
The output level shall be limited by the following signal bandwidth:
a) The signal bandwidth <5kHz. The output level measured on any phase line shall
not exceed 134dB(µV) at 9kHz, and shall not exceed 120dB(µV) at 95kHz; It
decreases linearly with the logarithm of the frequency between 9kHz and 95kHz.
b) The signal bandwidth is ≥5kHz. The output level measured on any phase line
shall not exceed 134dB(µV). In addition, when using a 200Hz bandwidth peak
detector to measure, any part of the signal spectrum shall not exceed 120dB(µV).
5.3.3.3 95kHz~150kHz frequency band
The artificial mains network conforming to the impedance characteristics of Figure 1a)
of 4.2 in GB/T 6113.102-2008 shall be used for measurement, see 5.3.1.2 for the
description of the artificial power supply network.
Measurement shall be made according to 5.2.2; the equipment connection is shown in
Figure 8.
The output level shall be limited according to the type of used equipment as follows:
a) Class-122 equipment. The output level measured on any phase line shall not
exceed 122dB(µV).
b) Class-134 equipment. The output level measured on any phase line shall not
exceed 134dB(µV).
5.3.3.4 150kHz~500kHz frequency band
The artificial mains network conforming to the impedance characteristics of Figure 1b)
of 4.3 in GB/T 6113.102-2008 shall be used for measurement, see 5.3.1.4 for the
description of the artificial mains network.
Measurement shall be made according to 5.2.2; the equipment connection is shown in
Figure 8.
The output level measured on any phase line shall not exceed 134dB(µV). In addition,
when using a 200Hz bandwidth peak detector to measure, any part of the signal
spectrum shall not exceed 120dB(µV).
5.3.4 Three-phase equipment transmits on single-phase
The measurement shall be made on the phase line or the neutral line. The limits
specified in 5.3.1 for the relevant frequency range is applicable to this measurement.
5.3.5 Summary of maximum output level
Appendix B
(Normative)
Measurement Method (3kHz~30MHz) – Artificial Mains Network
B.1 Overview
In order to measure the terminal voltage generated by the signal transmission
equipment, a V-shaped artificial mains network is required to provide a specified
impedance to the terminal of the device under test within the radio frequency range;
and an additional inductor is required to isolate the test circuit from the useless radio
frequency signal on the power supply.
This Appendix gives the relevant information of the artificial mains network, all other
requirements are given in GB/T 6113.102-2008.
B.2 Impedance
B.2.1 3kHz~9kHz frequency range
For the frequency range of 3kHz~9kHz, the correction network of 4.2 and Figure 4 in
GB/T 6113.102-2008 shall be used, as shown in Figure 3.
The impedance of the 0.47μF capacitor C3 (see Figure 3) is not negligible. Unless
otherwise specified, the reading of the measuring device needs to be corrected due to
the voltage dividing caused by this impedance.
B.2.2 9kHz~30MHz frequency range
The impedance of the V-shaped artificial mains network shall satisfy the 50Ω/50μH+5Ω
and 50Ω/50μH specified in 4.2 Figure 1a) and 4.3 Figure 1b) of GB/T 6113.102-2008.
NOTE 1: Pay attention to the NOTE of 4.2 in GB/T 6113.102-2008.
NOTE 2: Pay attention to the consideration of correction factors in the detailed description of
Table A.1 in Appendix A.2 of GB/T 6113.102-2008.
......
(Above excerpt released/modified date: 2020-09-12 / 2020-09-12. Translated/reviewed by: Wayne Zheng et al.)
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