Guidance on EMC Testing for Electric Hobs in Vietnam

On July 16, 2021, the Commission for the Standards, Metrology and Quality of Vietnam (STAMEQ) – Ministry of Science and Technology granted the Certificate of Registration for Electromagnetic Compatibility (EMC) Testing Activities for household electrical and electronic products and similar purposes according to QCVN 9:2012/BKHCN and Amendment 1:2018 to Phuc Gia Laboratory. The list of authorized products is detailed in the appendix attached to Certificate No. 2242/TDC-HCHQ.

Accordingly, since July 16, 2021, Phuc Gia Laboratory has been officially authorized to conduct EMC Testing for Electric Hobs in Vietnam, as well as other household and office electronics under QCVN 9:2012/BKHCN, including: Electric motor-operated handheld drills, vacuum cleaners, washing machines, refrigerators and freezers, air conditioners, hairdryers, blenders, meat grinders, juicers, hand mixers, and electric hobs (including induction hobs).

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Guidance on EMC Testing for Electric Hobs in Vietnam

1. What is Electromagnetic Compatibility?

Electromagnetic Compatibility (EMC) is the ability of electrical and electronic equipment to function normally in an electromagnetic environment without causing interference to the operation of other devices.

Without quality control, electrical and electronic products can generate electromagnetic interference (EMI), which may significantly disrupt the normal operation of other nearby devices.

2. Why must EMC be managed under QCVN 9:2012/BKHCN for Electric/Induction Hobs?

Every electrical product generates electromagnetic interference to some degree, and electric/induction hobs are no exception.

When electrical devices in general, and electric hobs specifically, are in operation—even under normal conditions—they emit electromagnetic radiation (emissions), also known as electromagnetic noise, with varying wavelengths and intensities. Higher radiation intensity results in a greater negative impact on the normal operation of surrounding equipment and the environment.

What are the harmful effects of electromagnetic interference from electrical devices?

Practical examples of these harmful effects in our daily lives include: distorting blood pressure monitor results; causing malfunctions in escalators, automatic doors, elevators, and cameras; or even affecting human health. Potential health risks include neurological and immune system dysfunction, reproductive health issues, and in some cases, cancer and various other diseases.

Due to these significant concerns regarding electromagnetic radiation, on April 12, 2012, the Ministry of Science and Technology issued QCVN 9:2012/BKHCN, the National Technical Regulation on Electromagnetic Compatibility for household and similar electrical and electronic equipment. This regulation defines the technical and management requirements for electromagnetic emission limits for household appliances, including electric and induction hobs (as specified in Amendment 1:2018 dated June 6, 2018).

3. Currently Effective Regulations

Circular No. 11/2012/TT-BKHCN: Circular promulgating the “National Technical Regulation on Electromagnetic Compatibility for household and similar electrical and electronic equipment” issued by the Ministry of Science and Technology on April 12, 2012.
QCVN 9:2012/BKHCN: National Technical Regulation on Electromagnetic Compatibility for household and similar electrical and electronic equipment issued by the Ministry of Science and Technology on April 12, 2012.

Accordingly, since April 12, 2012, products specified in the table below must be labeled in accordance with legal regulations on goods labeling; must undergo testing and conformity certification according to QCVN 9:2012/BKHCN, bear the conformity mark (CR Mark), and be subject to market inspection by quality control authorities as required by QCVN 9:2012/BKHCN.

ORD	Electrical and electronic devices that must comply with QCVN 9	Technical Requirements	Effective Dates and Mandatory Compliance
1	Instant Electric Water Heaters	TCVN 7492-1 (CISPR 14-1)	01/06/2013
2	Electric Motor-operated Handheld Drills	TCVN 7492-1 (CISPR 14-1)	01/06/2013
3	Self-ballasted Lamps (Integrated Ballast Lamps)	TCVN 7186 (CISPR 15)	01/06/2014
4	Vacuum Cleaners	TCVN 7492-1 (CISPR 14-1)	01/06/2014
5	Washing Machines	TCVN 7492-1 (CISPR 14-1)	01/06/2014
6	Refrigerators, Freezers, and Commercial Refrigerators	TCVN 7492-1 (CISPR 14-1)	01/06/2014
7	Air Conditioners	TCVN 7492-1 (CISPR 14-1)	01/06/2014

Amendment 1:2018 QCVN 9:2012/BKHCN – National Technical Regulation on Electromagnetic Compatibility for household and similar electrical and electronic equipment, issued by the Ministry of Science and Technology on June 6, 2018.

Amendment 1:2018 of QCVN 9:2012/BKHCN added four more product groups to the list of products subject to electromagnetic compatibility management, including:

ORD	Electrical and electronic devices that must comply with QCVN 9	Technical Requirements	Effective Dates and Mandatory Compliance
1	Hairdryers	TCVN 7492-1:2010 (CISPR 14-1:2009)	01/09/2019
2	Blenders, Meat Grinders, Juicers, Hand Mixers	TCVN 7492-1:2010 (CISPR 14-1:2009)	01/7/2020
3	Microwave (including combination types)	TCVN 6988:2006 (CISPR 11:2004)	01/07/2021
4	Electric hobs (including induction hobs)	TCVN 7492-1:2018 (CISPR 14-1:2016)	01/07/2021

– Circular 01/2022/TT-BKHCN: An amending regulatory act issued on February 16, 2022, which updates the legal framework of Circular 07/2018/TT-BKHCN and Circular 08/2019/TT-BKHCN. This circular impacts the administrative procedures for EMC Testing for Electric Hobs in Vietnam.

– Decision 1983/QD-TDC: The official guideline document for certifying products against the National Technical Regulation QCVN 9:2012/BKHCN. It outlines the specific methodology for evaluating electromagnetic compatibility for household appliances and similar electrical devices.

4. Regulated Disturbance Limits and Testing Parameters for Electric and Induction Hobs

To ensure compliance during EMC Testing for Electric Hobs in Vietnam, products are evaluated based on the following technical criteria:

a. Electric Hobs (Resistive/Infrared):

Limits for disturbance voltage at the mains terminals.
Limits for disturbance power (30 MHz – 300 MHz).
Limits for discontinuous interference (clicks).

b. Induction Hobs:

Limits for radiated disturbance (9 kHz – 30 MHz).
Limits for disturbance voltage at the mains terminals.
Limits for disturbance power (30 MHz – 300 MHz).
Limits for discontinuous interference (clicks).

5. What are the testing standards and mandatory application timeline of QCVN 9:2012/BKHCN for Electric Hob/Induction Hob products?

Testing Standard: TCVN 7492-1:2018 (CISPR 14-1:2016);

Mandatory Application Date: July 1, 2021

6. Where to perform EMC Testing for Electric Hobs in Vietnam and Induction Hobs?

The Electromagnetic Compatibility (EMC) Testing Chamber at Phuc Gia Laboratory Corporation (Vilas 1212) is a designated Testing lab. It has been officially recognized and issued a Registration Certificate by the Ministry of Science and Technology’s Directorate for Standards, Metrology and Quality to perform Electromagnetic Compatibility (EMC) testing. This facility provides testing for household electric and electronic appliances in full compliance with QCVN 9:2012/BKHCN and Amendment 1:2018 QCVN 9:2012/BKHCN.

Guidance on EMC Testing for Electric Hobs in Vietnam - QCVN 9:2012/BKHCN

You can view the Designation Certificate from the Commission for the Standards, Metrology and Quality of Vietnam – Ministry of Science and Technology for Phuc Gia Laboratory Corporation here:

The Ministry of Science and Technology Designates Phuc Gia Lab to Perform EMC Testing According to QCVN 9:2012/BKHCN

7. Key considerations for EMC Testing for Electric Hobs in Vietnam under QCVN 9 compliance?

Required quantity of samples: 01 sample.
Sample return: After testing, the Testing laboratory will return the sample to the customer.

Note: The sample’s wires may be cut for connection to the absorbing clamp system to perform the Disturbance Power test.

Testing cost: The cost for Electromagnetic Compatibility (EMC) testing is listed by Phuc Gia Laboratory at the following post:

Quotation for Testing at Phuc Gia Lab

8. Where to find a Sample Test Report for Electric and Induction Hobs?

To refer to a sample of the Test/Certification Reports for Electromagnetic Compatibility (EMC) according to QCVN 9:2012/BKHCN and Amendment 1:2018 QCVN 9:2012/BKHCN, your Enterprise can refer to the articles in the following links:

In conclusion, adhering to the specialized guidance for EMC Testing for Electric Hobs in Vietnam is the final and most critical step for ensuring your products meet the QCVN 9:2012/BKHCN standards. Successfully completing the EMC Testing for Electric Hobs in Vietnam provides the necessary technical evidence for a valid Declaration of conformity. By prioritizing professional EMC Testing for Electric Hobs in Vietnam at a designated Testing laboratory, manufacturers can guarantee that their induction or radiant hobs achieve full Technical regulation Compliance without causing electromagnetic interference.

Furthermore, the results from the EMC Testing for Electric Hobs in Vietnam are essential for obtaining a Certificate of Conformity and the mandatory CR Mark. Without verified EMC Testing for Electric Hobs in Vietnam, businesses will encounter significant barriers during Customs Clearance with the Department of Vietnam Customs. Ultimately, consistent EMC Testing for Electric Hobs in Vietnam under the oversight of the Ministry of Science and Technology (MOST) is the only way to ensure Standard Compliance and long-term market access in Vietnam.

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