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Lighting product CISPR15 (GB/T 17743) new and old standards difference

Release time:

2022-03-10 00:00

Source:

　　Compared with the previous CISPR 15:2015 (GB/T 17743-2017), the current standard CISPR 15:2018 (GB/T 17743-2021) has been revised and supplemented in terms of test items, test methods, and test limits. On the basis of summarizing the main technical changes, this article focuses on the revision of test items, the update of test methods, and the interpretation of standard differences in terms of determination of limit values.

　　Keywords: insertion loss, 60cm loop antenna method, radiated emission, CDNE

　　1 Insertion loss

　　Delete the requirements for insertion loss test and the original related Appendix A;

　　2 ELV lights

　　Added requirements for the conduction interference limits of the power port of ELV lamps (low voltage) and cables other than the power port;

　　Table4：

　　Table5：

　　Table6：

　　Note: ELV lamp (low voltage) refers to electrical equipment with rated AC voltage lower than 50V and DC voltage lower than 120V

　　3 Control terminals-control terminals

　　"Control terminals-control terminals" is updated to "Wired network interfaces-wired network ports", and its conduction interference limit value has been changed as follows:

CISPR 15:2015（GB/T 17743-2017)

CISPR 15:2018（GB/T 17743-2021)

Voltage Limits:

Frequency RangeMHz	Limit dB(μV)
Frequency RangeMHz	QP	OF
0.15~0.50	84~74	74~64
0.50~30	74	64

Voltage Limits:

Frequency RangeMHz	Limit dB(μV)
Frequency RangeMHz	QP	OF
0.15~0.50	84~74	74~64
0.50~30	74	64

Added current method limits:

Frequency RangeMHz	Limit dB(μA)
Frequency RangeMHz	QP	OF
0.15~0.50	40~30	30~20
0.50~30	30	20

Note:

Either of the above two limits can be met
Both AMN and CVP test methods are acceptable for the voltage limit value; current probe test method is used for the current limit value (the distance between the current probe and the EUT is 30±5cm)

　　4 load terminals-load terminals

　　"load terminals-load terminals" is updated to "local wired ports-local wired network ports", and its conduction interference limit value has been changed as follows:

CISPR 15:2015（GB/T 17743-2017)

CISPR 15:2018（GB/T 17743-2021)

Voltage Limits:

Frequency RangeMHz	Limit dB(μV)
Frequency RangeMHz	QP	OF
0.15~0.50	80	70
0.50~30	74	64

Voltage Limits:

Frequency RangeMHz	Limit dB(μV)
Frequency RangeMHz	QP	OF
0.15~0.50	80	70
0.50~30	74	64

Added current method limits:

Frequency RangeMHz	Limit dB(μA)
Frequency RangeMHz	QP	OF
0.15~0.50	40~30	30~20
0.50~30	30	20

Note:

Either of the above two limits can be met
The voltage limit can be tested with a voltage probe (the distance between the pressure probe and the EUT is 10±5cm); the current limit can be tested with a current probe (the distance between the current probe and the EUT is 30±5cm)

　　5 9KHz~30MHz loop antenna radiation disturbance test

　　5.1 There is no change in the test method and limit value of the three-loop antenna;

　　5.2 Added that for products with a size >1.6m, according to the method in CISPR16-1-4, use a 60cm loop antenna in an open field or a semi-anechoic chamber for testing in an environment of 3m. This test method can replace 3m and 4m loop antenna test:

　　Note:

　　1. For products with a size >1.6m, one of the three-loop antenna method and the 60cm loop antenna method can be satisfied

　　2. When testing with a loop antenna, the center of the loop antenna is 1.3m away from the ground, and the XYZ three-axis needs to be tested

　　3. For the three-loop antenna test: antenna diameter d=2m, EUT maximum size D≤1.6m; antenna diameter d=3m, EUT maximum size D≤2.6m; antenna diameter d=4m, EUT maximum size D≤3.6m;

　　6 For frequency bands above 30MHz

　　6.1 The CDNE method replaces the original CDN method, and stipulates that if the CDNE method is required to evaluate the radiation disturbance test, the internal operating frequency of the product must be ≤30MHz, and the product size should be controlled within 3m*1m*1m (length, width and height). Furthermore, there are the following updates

CISPR 15:2015（GB/T 17743-2017）

CISPR 15:2018（GB/T 17743-2021）

Limit:

Frequency RangeMHz	QP limit dB(μV)
30~100	64~54
100~230	54
230~300	61

The limits are more stringent:

Frequency RangeMHz	QP limit dB(μV)
30~100	64~54
100~200	54
200~300	54~51

CDN electrical parameters:

parameter	frequency band(MHz)
parameter	0.15~24	24~80	80~300
Impedance Z \|Zce\|	150 ±20Ω	150 ^﹢60 / _-45 Ω	150 ±60Ω

CDNE electrical parameters (30~300MHz):

parameter	CDNE-M2/M3	CDNE-Sx
Common Mode Impedance Z\|Z _CM \|	150 ^﹢10 / _-20 Ω	150 ^﹢10 / _-20 Ω
Common Mode Impedance Z\|Z _CM \|	Phase: 0±25°	Phase: 0±25°
Differential mode impedance Z\|Z _DM \|	100 ±20Ω	no request
LCL	≥20dB	no request
Partial pressure coefficient tolerance	±1.5dB	±1.5dB
Coupling attenuation	＞30dB	＞30dB

Test layout:

See Figure 1 below

Note: The standard layout of the 6dB attenuator is to meet the impedance matching problem

Layout to remove the 6dB attenuator :

See Figure 2 below

Note: The new standard has relevant regulations on CDNE, no need for 6dB attenuator

　　figure 1

　　figure 2

　　6.2 Radiated emissions above 30MHz

　　The early standard only stipulated the limit value of 30MHz~300MHz, the new standard adds the test requirement of 300MHz~1GHz, and stipulates that the test can be carried out in a fully anechoic chamber

CISPR 15:2015（GB/T 17743-2017)

CISPR 15:2018（GB/T 17743-2021)

Limit:

Frequency RangeMHz	QP limit dB(μV/m)
Frequency RangeMHz	3m	10m
30~230	40	30
230~300	47	37

Limit:

Test Methods	Guideline	Frequency RangeMHz	QP limit
OATS/SAC 10m	CISPR 16-2-3	30~230 230~1000	30 dB(μV/m) 37 dB(μV/m)
OATS/SAC 3m	CISPR 16-2-4	30~230 230~1000	40 dB(μV/m) 47 dB(μV/m)
FAR 3m	CISPR 16-2-6	30~230 230~1000	42~35 dB(μV/m) 42 dB(μV/m)
HE HAS	IEC 61000-4-20	30~230 230~1000	30 dB(μV/m) 77 dB(μV/m)
CDNE	CISPR 16-2-1	30~100 100~200 200~300	64~54 dB(μV) 54 dB(μV) 54~51 dB(μV)

Note: the above upper limit, one of which can be met

Test layout:

Conventional radiated emission test layout, refer to CISPR 32

The layout requires adding CDNE to the EUT input:

The layout is shown in Figure 3 below

image 3

　　7 Self-ballasted lamp test

　　7.1 The openings in the cone panel have been changed as follows:

　　CISPR 15:2015(GB/T 17743-2017)：

　　CISPR 15:2018(GB/T 17743-2021)：

　　7.2 For self-ballasted lamps with GU10 lamp caps, the conical cover or the lamp cap itself must be connected to the ground of LISN when conducting the conducted disturbance test, as shown in the schematic diagram below:

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