Introduction:

GB4824-2019 will be officially implemented on July 1, 2020, when GB4824-2013 will be replaced and invalidated, this article introduces the GB 4824-2019 standard update analysis, including the name of the standard and the name of the corresponding international standards and EU standards, and lists the updated content of 2019 compared to 2013, and also gives the entire GB4824- 2019 CE and RE test limit values table, easy for EMC testers to print and query. If you have any questions, please contact EUTTEST for consultation.

I. Introduction to Standards (Checked on November 05, 2024)

    1. Chinese standard: GB 4824-2019; Implementation date: July 1, 2020

Industrial, Scientific and Medical Equipment RF Nuisance Characterization Limits and Measurement Methods

    1. Corresponding IEC standards: CISPR 11:2015 + AMD1:2016 + AMD2:2019 CSV

Amendment 2 - Industrial scientific and medical equipment - Radio-frequency disturbance characteristics - Limits and methods of measurement Limits and methods of measurement

    1. Corresponding EU standard: EN 55011:2016/prA2:2018 (fragment 3)

Industrial, scientific and medical equipment - Measurement of radiated disturbances - Improvement of repeatability for measurements in the frequency range 1-18 GHz

Updated content of GB 4824 in 2019 compared to 2013 version

The entire technical content of this standard is mandatory.

This standard is drafted in accordance with the rules given in GB/T 1.1-2009.

This standard replaces GB4824-2013 "Industrial, Scientific and Therapeutic (ISM) RF equipment nuisance characteristics limits and basket measurement methods", this standard and GB4824-2013, compared with the main technical changes are as follows:

  • The name of the standard has been changed to "Limits of radio frequency nuisance characteristics and methods of measurement for industrial, scientific and medical equipment".
  • The scope of application of the standards in Chapter 1 is further clarified (see Chapter 1);
  • Modified the "2nd cover of normative references" (see Chapter 2);
  • " Chapter 3 Terminology and definitions" 12 terms and definitions have been added for AC power ports, artificial power networks, components, DC artificial networks, DC power ports, grid-connected power converters, high power power power electronic systems and equipment, photovoltaic power generation systems, type testing, full-wave darkrooms, open test sites and half-wave darkrooms (see Chapter 3);
  • Added "5.3 User documentation" (see 5.3).
  • "6.2 Group 1 equipment measured at the test site" added limits for equipment with a power greater than 75 kVA, limits for nuisance voltages at DC supply ports (see 6.2).
  • The main changes in "6.3 2 sets of equipment for test site measurements" are summarized as follows:
  • (a) The limit of 3 m distance in the limit values for the enforcement of electromagnetic radiation for 2 groups of class A equipment was revised for measurements at the test site (see table 10 in the 2013 version).
  • "Limit values for peak electromagnetic radiation disturbances for 2 groups of equipment operating at frequencies above 400 MHz and generating continuous disturbances" The limit values of 11.7 GHz to l2.7 GHz have been added (see Table 13 of the 2013 edition).
  • Deleted "Table 15 Peak electromagnetic radiation nuisance limits for Group 2 Class B equipment operating at frequencies above 400 MHz and generating fluctuating nuisances other than continuous waves" (see Table 15 in the 2013 edition).
  • Added "Table 15 Limits of nuisance values for electromagnetic radiation of group 2, category B, at operating frequencies above 400 MHz (APD levels corresponding to 10 ^-1)" (see table 15 in the 2013 version).
  • Added "Figure 3 Typical cable arrangement of table-top test equipment for 3 m distance radiated nuisance mice" (see Figure 3).
  • Added "Figure 4 Three-dimensional diagram of the canonical scratch measurement arrangement for the measurement of conducted and/or radiated disturbances for floor-mounted test equipment" (see figure 4).
  • 7.5.3.1.3 Measurement of radiated disturbances from 30 MHz to 18 GHz connected to the laboratory AC power grid" has been added (see 7.5.3.1.3); the requirements for "ISM RF lighting equipment, medium-voltage (MV) and high-voltage (HV) switchgear, and grid-connected power converters" have been added in 7.6; and the following have been added "ISM RF lighting equipment, medium-voltage (MV) and high-voltage (HV) switchgear, and grid-connected power converters" (see 7.6).
  • Added "8.2.2 Measurement of grid-connected power converters" (see 8.2.2).
  • Added "9.4.2 Operating conditions of the equipment under test (EUl)" (see 9.4.2).
  • Added "9.4.3 Projected quantities" (see 9.4.3).
  • Added "9.4.4 Final measurements" (see 9.4.4); "12 Conformity assessment of equipment" amended to "12 Measurement uncertainty" (see Chapter 12 of the 2013 edition). );
  • Deleted "13 Diagrams and Flowcharts" (see Chapter 13 of the 2013 edition);
  • Added "Appendix H (Informational Appendix) Methodology for Statistical Evaluation of CISPR Compliance of Bulk Products" (see Appendix H).
  • Added "Appendix I (Normative Appendix) Artificial Networks (AN) for Evaluating DC Power Port Nuisance Voltages in Semiconductor Power Converters" (see Appendix I).
  • Added [Appendix] (Informative Appendix) Layout of effective measurement site configurations for the measurement of the grid-connected power converter GCPC" (see Appendix J).
  • Added "Appendix K (Informational Appendix) Guidelines for the configuration of the test site and instrumentation to prevent the saturation effect of the suppression filter of transformerless power converters when type testing is performed in accordance with this standard" (see Appendix K).
  • This standard uses the translation method equivalent to CISPR 11: 2016, "Limits of shoton harassment characteristics of industrial ＼ scientific and medical equipment and methods of measurement of baskets" (£6.1).
  • Our country's documents that have consistent correspondence with the international documents normatively cited in this standard, such as Bu:
  • GB/T 6113.101-2016 Specification for radio nuisance and immunity measurement equipment and measurement methods Part 1-1: Radio nuisance and immunity measurement equipment Measurement equipment (CISPR 16-1-1,2010,IDT).
  • GB/T 6113.203-2016 Specification for radio nuisance and immunity measurement equipment and measurement methods Part 2-3: Radio nuisance and immunity measurement methods Radiated nuisance measurements (CISPR 16-2-3,2010,IDT).
  • GB 9706.4-2009 Medical electrical equipment Part 2-2: Safety-specific requirements for high-frequency surgical equipment (IEC 60601-2-2:2006, IDT).
  • GB/T 10066.6-2018 Test methods for electrothermal and electromagnetic treatment devices Part 6: Work＼1'1 Method for determining the output power of microwave heating devices (IEC 61307,2011,MOD);.
  • GB/T 15579.10-2008 Arc welding equipment Part 10: Electromagnetic compatibility (EMC) requirements CIEC 60974-10:2007, IDT).
  • yy 0505-2005 Medical electrical equipment Part 1-2: General requirements for basic safety and essential performance Parallel standard: electromagnetic nuisance requirements and tests CIEC 60601-1-2,2001, ID T).

The successive versions of the standard that this standard replaces were published as:

gb 4824-1984, gb 4824-1996, gb 4824-2001, gb 4824-2004, gb 4824-2013.

III. Grouping of EUTs for products under test in the new standard

1 group of equipment

Equipment other than Group 2 equipment within the scope of this standard.

2 groups of equipment

Includes all industrial medical RF equipment used for material processing or testing/analysis purposes, or for the transmission of electromagnetic energy, in the form of electromagnetic radiation, inductive and/or capacitive coupling, which intentionally generates and uses, or is localized to use, RF energy in the 9 kHz to 400 GHz frequency band.

Fourth, the new standard on the classification of the product under test EUT

In accordance with the intended use of equipment for use in an electromagnetic environment, this standard defines two classes of equipment, Class A and Class B.

Category A equipment

Equipment used in non-residential environments and not directly connected to residential LV supply grid installations.Class A equipment shall meet Class A limits.

Arc welding equipment incorporating an arc initiating or stabilizing device and a separate arc initiating or stabilizing device for welding shall be classified as Class A equipment.

Category B equipment

Domestic equipment and equipment used in facilities directly connected to the residential low-voltage power supply grid.

Class B equipment shall meet Class B limits.

V. Summary table of GB 4824-2019 test items

The 2019 version differs significantly from the 2013 version in terms of radiation harassment, as detailed in the table below.

<<<<提醒：左右滑动表格>>>>
Group 1, category AGroup 1, category BGroup 2, category AGroup 2, category BGroup 2, category A

EDM equipment and

Arc welding equipment

CE Conducted Emission

AC port

150kHz-30MHz150kHz-30MHz150kHz-30MHz150kHz-30MHz150kHz-30MHz
CE Conducted Emission

DC port

150kHz-30MHz150kHz-30MHz/// (Remark 3)//////
RE Radiation Emission - Magnetic Field

OTAS\SAC

150kHz-30MHz

//////150kHz-30MHz150kHz-30MHz///
RE radiated emission - electric field

OTAS\SAC\FAR

30MHz-1GHz

30MHz-1GHz

3-meter method/10-meter method

Test QP\AV

20KVA Distinction Limit (Remark 2)

30MHz-1GHz

3-meter method/10-meter method

Test QP\AV

30MHz-1GHz

3m/10m/30m

OTAS\SAC

QP limits are shown in Table 10

3-meter FAR optional (Remark 5)

3 m in line with 3.17 (Remark 4)

30MHz-1GHz

3 m/10 m

OTAS\SAC

QP limits are shown in Table 12

3-meter FAR optional (Remark 5)

3 m in line with 3.17 (Remark 4)

3.17 (Remark 4)

30MHz-1GHz

3m/10m/30m

OTAS\SAC\FAR

QP limits are shown in Table 11

3 m in line with 3.17 (Remark 4)

RE radiated emission - electric field

1GHz-18GHz

Scope of application (Remark 6)

//////1GHz-18GHz

3-meter method

PK limits are shown in Table 14

1GHz-18GHz

3-meter method

APD limits are shown in Table 15

(Note 7)

1GHz-18GHz

3-meter method

PK limits are shown in Table 14

on-site measurement

CE Conducted Harassment

///////////////
on-site measurement

RE Radiation Emission

0.15MHz-1GHz

Limits are shown in Table 16

Test distance ≥30m

///0.15MHz-1GHz

Limits are shown in table 17

Test distance D≥30m

(Note 8)

///0.15MHz-1GHz

Limits are shown in table 17

Test distance D≥30m

(Note 8)

<<<<提醒：左右滑动表格>>>>

EUTTEST Remark 1: OTAS: Open Test Area, SAC: Semi-electrowave Darkroom, FAR: Full-Airwave Darkroom.

EUTTEST Note 2: 20KVA differentiated limits: there is a difference between products with rated power greater or less than the 20KVA limit.

EUTTEST Remark 3: ///: No definition.

EUTTEST Remark 4: 3m test distance in the range 30MHz-1GHz is only applicable to 3.17:

Small equipment: Benchtop or floor standing equipment (including cables) suitable for installation in an imaginary cylindrical test area of 1.2 m in diameter and 1.5 m in height (to ground level).

EUTTEST Remark 5: If the EUT can be in the effective test area of a full-wave darkroom. then the FAR can be used for testing.

EUTTEST Remark 6: The 1GHz-18GHz radiated emission test is only applicable to Group 2 equipment operating above 400MHz.

EUTTEST Note 7: APD measurements using 1MHz RBW and ≥1MHz VBW

EUTTEST Remark 8: D is calculated using the formula on page P16 following Table 17.

Summary: Radiated nuisance test limits are more, it is recommended to print the above table and notes to keep.

VI. Recommended test equipment that meets the requirements of GB 4824-2019 standard:

6.1, EMI receivers that meet the requirements of the 2019 version of the standard:

EUTTEST as a professional customized EMC test laboratory solution provider for customers in the electronics industry to provide turnkey laboratory, fully compliant with the latest standards GB4824-2019 standards, such as the laboratory needs to be upgraded to comply with can also contact EUTTEST for more information.

The first choice is the German R&S receivers R&S ESR and R&S ESW, which EUTTEST distributes and sells.

See details:R&S ESR

See details:R&S ESW

6.2, AMN and DC-AN, voltage probes that meet the requirements of the 2019 version of the standard

Preferred EUTTEST agent sales of Germany SCHWARZBECK's AMN, DC-AN, voltage probe

See details:AMN

See: DC-AN

See details:Voltage probe

6.3, Low-frequency magnetic field antennas up to 30 MHz in accordance with the requirements of the 2019 version of the standard

The preferred choice is the loop antenna of SCHWARZBECK of Germany, which is sold by EUTTEST as an agent.

See details:loop antenna

6.4, High-frequency electric field antennas above 30 MHz in accordance with the requirements of the 2019 version of the standard

Preferred biconical logarithmic periodic antennas and horn antennas of SCHWARZBECK of Germany, which are sold by EUTTEST as an agent.

See details:Biconical log-periodic antenna

See details:Horn Antenna

6.5, Semi-electrical wave darkroom and full electrical wave darkroom compliant with the 2019 version of the standard

EUTTEST can come to your home to measure the actual site and give you a quotation for the construction of the darkroom.

See details:Radio Darkroom Construction Program