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Electric Tools-Implementation rules for compulsory certification of electrical and electronic products
Ref. No. CNCA¬¬—01C—014：2001
Implementation rules for compulsory certification of electrical and electronic products electric tools
Announced Dec. 7, 2001 Implemented on May 1, 2002
Certification and Accreditation Administration of People’s Republic of China
1．Scope
This document applies hand-held motor-operated electric tools.
It includes:
Drills (including Impact drills)
Screwdrivers and Impact wrenches
Grinders (including Angle grinders, Straight grinders, Die grinders, Grinders with water supply, Polishers and Disk-sanders)
Sanders (including Orbital sanders, Belt sanders and Random sanders)
Circular saws
Rotary hammers (including Hammers)
Spray guns for non-flammable liquids
Sheet metal shears (including Shears with double blade edges, Nibblers)
Tappers
Reciprocating saws (including Jig saws and Sabre saws)
Internal concrete vibrators
Chain saws
Planers
Hedge trimmers and Grass shears
Routers, trimmers
Marble cutters
2．Certification model
Type testing + initial inspection of the factory + follow-up inspection.
3. Major processes for certification
3.1Application for certification
3.2Type testing
3.3Initial inspection of the factory
3.4Evaluation of certification result and approval of certification
3.5Follow-up inspection
4.General requirements for certification
4.1Application for certification
4.1.1Definition of application unit for certification
4.1.1.1 Application unit shall be defined according to the model of the products. The products, of same model/type, of same manufacturer, but from different manufacturing premises, shall be in different application units, but only one type testing is required.
4.1.1.2 When the products manufactured in the same premise with different models, should the type and specification as well as the motors, safety construction, safety components and some parts having significant influence on EMC in the products are the same, these products can be defined to one application unit.
4.1.2 Application documents
The formal application shall be submitted with the following documents:
1)Product assembly chart, circuit diagram;
2)List of critical components and materiel;
3)Description of the difference between the different models of products in the same application unit;
4)Other necessary documents.
4.2Type testing
4.2.1Samples delivery for type testing
4.2.1.1 Principles for samples delivery for type testing
When the products in one application unit for certification have only one model, the samples of the model shall be delivered.
When the products in one application unit have more than one model, the representative samples from the application unit shall be selected and delivered for type testing. The samples should cover as much safety requirements as possible on the products of the same unit.
According to requirements, samples of other products within the application unit shall be delivered for additional testing on differences.
4.2.1.2 Samples quality/amount requirements
The applicants shall take responsibility of samples delivered for type testing in accordance with the requirements of the certification body and be responsible for them.
4 samples for each application unit shall be submitted.
The safety components tested accompanying the products and their test standards and quantity of the samples are specified in the table below:
|
No. |
Name of components |
Standards for testing |
Quantity of specimens |
|
1 |
Switch for appliances |
GB 15092.1-2000 |
5 or 8 (1) |
|
2 |
Non-rewirable plug |
GB 2099-1996 |
18 |
|
3 |
Commutator |
JB/T 10107-1999 (2) |
6 |
(1) When the screwless terminal are used in the switch, the quantity of the specimens shall be
8 pieces.
(2) Only the safety test items specified in JB/T10107-1999 shall be conducted. They are as follows: Measurement of diameter runout; Measurement of displacement between adjust two bars of commutator; Dielectric strength test; Mechanical strength test and Humidity resistance test.
4.2.1.3 Handle of samples and relating documents after type testing
The samples tested and/or the relating documents for the samples should be handled in appropriate ways after type testing.
4.2.2 Test standards, items and methods for type testing
4.2.2.1 Test standards
1) The test standards for safety certification of hand-held motor-operated electric tools shall be as follows:
a) GB3883.1－1991, Safety of hand-held motor-operated electric tools
Part 1: General requirements.
b) GB3883.2－1991, Safety of hand-held motor-operated electric tools
Part 2: Particular requirements for screwdrivers and impact wrenches.
c) GB3883.3－1991, Safety of hand-held motor-operated electric tools
Part 2: Particular requirements for grinders, polishers and disk-type sanders.
d) GB3883.4－1991, Safety of hand-held motor-operated electric tools
Part 2: Particular requirements for sanders.
e) GB3883.5－1998,Safety of hand-held motor-operated electric tools
Part 2: Particular requirements for circular saws and circular knives.
f) GB3883.6－1991, Safety of hand-held motor-operated electric tools
Part 2: Particular requirements for drills.
g) GB3883.7－1991, Safety of hand-held motor-operated electric tools
Part 2: Particular requirements for hammers.
h) GB3883.8－1991, Safety of hand-held motor-operated electric tools
Part 2: Particular requirements for sheet metal shears.
i) GB3883.9－1991, Safety of hand-held motor-operated electric tools
Part 2: Particular requirements for tappers.
j) GB3883.10－1991, Safety of hand-held motor-operated electric tools
Part 2: Particular requirements for planers.
k) GB3883.11－1991, Safety of hand-held motor-operated electric tools
Part 2: Particular requirements for reciprocating saws (jig and sabre saws).
l) GB3883.12－1991, Safety of hand-held motor-operated electric tools
Part 2: Particular requirements for concrete vibrators (internal vibrators).
m) GB3883.13－1992, Safety of hand-held motor-operated electric tools
Part 2: Particular requirements for spray guns for non-flammable liquids.
n) GB3883.14－1993, Safety of hand-held motor-operated electric tools
Part 2: Particular requirements for chain saws.
o) GB3883.15－1993, Safety of hand-held motor-operated electric tools
Part 2: Particular requirements for hedge trimmers and grass shears.
p) GB3883.17－1993, Safety of hand-held motor-operated electric tools
Part 2: Particular requirements for routers and trimmers.
q) GB3883.18－1995, Safety of hand-held motor-operated electric tools
Part 2: Particular requirements for marble cutters.
2) Test standards for the electromagnetic compatibility certification are as follows:
a)GB4343－1995, Limits and methods of measurement of radio disturbance
characteristics of electrical motor-operated and thermal appliances for
house-hold and similar purposes, electric tools and similar electric
apparatus.
b) GB17625.1－1998, The limits for the harmonic current emissions caused
by low-voltage electrical and electronic equipment (equipment input
current ≤ 16A).
4.2.2.2 Test items
1) Test items for safety certification
The test items for type testing for compulsory safety certification of electric tools shall include all appropriate items specified in relevant series safety National Standards GB 3883.
2) Test items for EMC
a. 0.15MHz~30MHz radio continuous disturbance voltage (GB4343-1995)
b. 30MHz~300MHz radio continuous disturbance power (GB4343-1995)
c. Limits for the harmonic current emissions (GB17625.1-1998)
4.2.2.3 Test methods
The safety type testing shall be carried out according to the methods specified and/or referred in the standard GB 3883.
The EMC type testing of terminal disturbance voltage and disturbance power shall be carried out according to the National Standard GB 4343-1995. The test of harmonic current emissions is carried out according to the National Standard GB 17625.1-1998.
4.3Initial inspection of the factory
4.3.1Contents of the inspection
The contents of factory inspection shall include the factory quality assurance ability assessment and the product consistency check.
4.3.1.1 Assessment of factory quality assurance ability
The inspectors assigned by the certification body shall carry out the factory quality assurance ability assessment according to the Requirements for Factory Quality Assurance Capability (see appendix 1) and the additional inspection requirements stipulated by CNCA. Meanwhile, the inspector shall still check the test requirements of the factory according to the Test Requirements of Factory Quality Control for the electric tool products (see appendix 2).
4.3.1.2 Check of consistency of the product
The check of consistency of the product applying for certification shall be checked on the site of production. If more than one application unit are involved in the certification, at least one model sample of each unit shall be taken for the product consistency check. The following major points shall be checked:
1)The name of product, type/model and specification on the nameplates and packages of products to be certified shall be identical with those indicated in the type testing reports.
2)The construction of products to be certified (mainly construction in terms of safety and EMC performances) shall be identical with those of the samples for type testing.
3)The critical components in terms of safety and power supply filters having significant influences on EMC shall be identical with those declared in type testing and confirmed by certification body.
All the products to be certified and processing premises shall be covered for inspections of factory quality assurance ability and of consistency of the products.
The witness tests on site, if necessary, should be carried out to confirm the performances of safety and EMC performances of the products during the factory inspection.
4.3.2 Timing of factory inspection
The initial factory of inspection shall normally be implemented after the sample has passed the type tests. The type testing and factory inspection can be implemented at the same time in special case.
The duration of the factory inspection shall be determined by the amounts of the application units of products to be certified and with the consideration of the scale of the factory. It will normally take about 1 to 4 man-day for each processing premise.
4.4 Evaluation of certification result and approval of certification
4.4.1 Evaluation of certification result and approval of certification
The certification body shall be responsible for giving a general evaluate of the results of type testing and factory inspection and for issuing the certificates to the applicants for the conformed products. One certificate shall be issued for one application unit. The application of the certificates shall comply with the requirements for Regulations for Compulsory Product Certification.
4.4.2 Time frame
The time frame for certification means the working days counting from the acceptance of complete application till the issuance of the certificates, which includes the time for type testing, factory inspection report submission after inspection, evaluation of certification results and approval of certificates etc.
Normally, the type testing takes 25 working days, not including the time for corrective actions and retest to the non-conformity item(s). If the components are required to be tested and the required time exceed those of electric tool(s), the time of type testing should be calculated according to the longest test time of the component, counted from the date receiving he samples and fees.
Inspection report should be submitted within 5 working days after the inspection. It will be counted from the date when the inspectors completed the inspection on site and received from the factory the corrective action reports on non-conformities satisfying the requirements.
Evaluating certification results and approving the certificates shall be normally completed within 5 working days.
4.5 Follow-up inspection
4.5.1 Frequency of follow-up inspection
4.5.1.1 The follow-up inspection shall normally be implemented at least once per year. The first follow-up inspection shall normally be implemented 12 months after the certificate being granted.
4.5.1.2 The frequency of the follow-up inspection should be increased in any of following cases:
1)The certified product has serious quality problem, or is complained by client, which has been verified to be the responsibility of the certificate holder.
2)The certification body doubts the conformity of the certified product against the requirements of safety and EMC standards with sufficient reasons.
3)Sufficient information indicates that the conformity or the consistency of the certified products might be affected due to the changes of organization structure, production condition and the quality system of the manufacturers and/or factories.
4.5.2 Contents of the follow-up inspection
The model of the follow-up inspection shall be as follows:
Re-assessment of factory quality assurance ability + check of consistency of products certified, and when necessary, samples may be taken and tested at the testing laboratories, see Clause 4.5.3.
The certification body shall implement the factory re-assessment in accordance with the Requirements for Factory Quality Assurance ability (see appendix 1). The items 3,4,5 and 9 specified in the Requirements for Factory Quality Assurance ability must be assessed for follow-up inspection, and the rest items may be selected. All the items of the Requirements shall be covered at least every four years.
Meanwhile, the check of the test requirements shall be carried out according to the Test Requirements of Factory Quality Control for the Electric Tool Products (see appendix 2)
The duration for follow-up inspection shall be determined by the amounts of units of certified products with appropriate consideration of the production scale of the factory. It will normally take about 1 to 2 man-day.
4.5.3 Sampling testing
If necessary, the certified products should be sampled and tested. The samples shall be taken randomly from qualified products of the factory (including those from production line, stock and market). The quantity of the samples shall be 3 pieces (the same model).
The methods and requirements for sampling shall be carries out according to the relevant specifications of the certification body.
The designated testing bodies shall be responsible for testing and complete the testing within 25 working days.
The certification body may carry out part or all of test items based on degree of effects on the safety or EMC performances of the products.
4.5.4 Evaluation of follow-up inspection
The certificate can be retained and the certification marks can be continuously used upon favorable inspection results. If there is any non-conformities found on the follow-up inspection, the corrective actions shall be taken within three months. Otherwise, the certificates will be withdrawn and the use certification marks will be stopped using, and the relevant results will be announced.
5. Certificate
5.1 The validity of the certificate
5.1.1 The validity of the certificates
The certificate of the products covered by this Rules does not indicate specific expiry date. The validity of the certificate depends on the follow-up inspection.
5.1.2 Change of certified product
5.1.2.1 Applying for change of certified product
Should any change occur in the specifications, model of the components list in Clause 4.2.1.2 and power supply filters, or the design, electric construction involved in safety and/or EMC of the electric tool, the application for approving/recording the changes shall be made to the certification body.
5.1.2.2 Evaluation of change and approval
The certification body shall evaluate the change according to the submitted information and confirm whether it can be approved or samples should be submitted for tests. If test is necessary, the changes will be approved upon favourable test results.
5.2 Extension of certified products
5.2.1 Procedure for extension
For extension of the range of products covered by the unit of certified products, the certificate holders should first make application.
The certification body shall check the consistency of the extending products against the certified products and confirm the applicability of original certification results to the extended products and carry out, if necessary, the additional tests or inspection based on the differences.
After approval, either a separate certificate can be issued or the original certificated can be updated at the request of the certificate holder.
5.2.2 Requirements for sample
The certificate holders shall first submit the technical documents relating to the extended products. And, as necessary, one sample may be required by the certification body according to Clause 4.2 of this Rules, for which the testing items shall be decided by the certification body.
5.3 Suspension, cancellation and withdrawal of the certificate
The suspension, cancellation and withdrawal of the certificate shall follow Requirements for Compulsory Product Certification.
6. Use of compulsory product certification mark
The certificate holder shall follow Regulations for Compulsory Certification Mark.
6.1 Design of the mark allowed to use
The certification mark with letter “S&E” (see below) shall be used for certification involving both safety and EMC:
6.2 Derivations of certification mark
The products listed in this Rules shall not be allowed to use any derivation of certification mark.
6.3 Ways of use
Any of the following three ways is required: affixing standard-sizes marks (labels) printed only CNCA, printing on the nameplate or moulding.
6.4 Location of the mark
The certification mark shall be applied on an exposed location on the outer body of the products.
7. Charge
The certification fee shall be charged by the certification body according to the national statutory structural fee chart.
Annex 1
Requirements For Factory’s Quality Assurance Ability
Factory shall meet the requirements for factory’s quality assurance ability in this Rules, in order to ensure that all certified products are identical within accepted manufacturing tolerances to the sample or samples against which the type test was approved.
1. Responsibility, Authority and Resource
1.1 Responsible Person for Quality
The factory shall stipulate relationship between, responsibility and authority of personnel involved in quality actions. The factory shall also appoint a responsible person for quality from the organization who, irrespective of other responsibilities, shall have responsibility and authority that include
a)ensuring that quality system, which meets the requirements of this Rules, is established, implemented and maintained.
b)ensuring that the products with the certification label are produced in conformity with the standards to which they were certified.
c)establishing documented procedure to ensure that certification labels are kept and used appropriately.
d)establishing documented procedure to ensure that the certification label is not borne on any non-conforming product or changed product that was not notified by certification body.
The responsible person for quality shall be competent to perform the work.
1.2 Resources
Factory shall equip with necessary production facility and testing equipment in order to consistently manufacture the products in conformity with certification standards. In addition, factory shall provide relevant human resources, to ensure that personnel performing work affecting product quality is competent, and establish and maintain necessary environment suitable for manufacturing, test and inspection, storage etc.
2. Documents and Records
2.1 Factory shall establish and maintain documented quality plan or relevant documents for certified products, and needed documents in order to ensure that related processes to product quality are operated and controlled effectively. Quality plan shall define the objective of product design, realization process, test and related resource, as well as the requirements for changes (i.e. standard, workshop, critical components etc.) to certified products, use and management of labels.
Requirements of design standard or specification, as one essential part of quality plan, shall not be lower than the requirements of national standard for the product.
2.2 Factory shall establish and maintain documented procedure to control the documents required in this Rules, to ensure that
a)documents are approved by authorized personnel prior to issue and re-approved after changes to ensure its comformity;
b)changes and current revision status of documents are identified to prevent unintended use of obsolete documents;
c)effective versions of applicable documents are available at points of use.
2.3 Factory shall establish and maintain documented procedure to define the controls for the identification, storage, protection and disposition of quality records. Quality records shall remain legible, integral to provide evidence of product conformity to requirements.
Retention time of quality records shall be appropriate.
3. Purchasing and Incoming Inspection
3.1 Control of Supplier
Factory shall establish the procedure that defines the criteria for selection, evaluation and routine supervision of supplier, which provide critical components and material, to ensure the supplier has ability to provide the critical components and material in accordance with requirements.
Records of the evaluations and routine supervision shall be maintained.
3.2 Inspection/Verification for Critical Components and Material
Factory shall establish and maintain procedure of inspection or verification for purchased critical components and material, and procedure of periodic verification inspection, to ensure that critical components and material meet specified certification requirements.
Inspection for purchased critical components and material may be carried out by factory or by supplier. Where inspection is performed at supplier’s premise, factory shall state the intended inspection requirements to supplier.
4. Monitoring and Measurement of Processes
4.1 Factory shall identify critical production processes and arrange operators with appropriate qualification at the processes. Where product quality can not be guaranteed when no operating document, appropriate operating instructions shall be prepared to make production processes under control.
4.2 Where environment condition is required, factory shall meet the requirements.
4.3 Factory shall monitor and control appropriate process parameters and product characteristics, as applicable.
4.4 Factory shall establish and maintain maintenance procedure for manufacturing facility.
4.5 Production shall be inspected at appropriate stages of manufacture to ensure that components, sub-assemblies, wiring runs etc. are in accordance with the certification approved sample.
5. Routine Tests and Verification Tests
Factory shall establish and maintain documented routine tests and verification tests procedures to verify and demonstrate that products are in accordance with relevant requirements. The procedures shall include test items, contents, method, acceptance criteria etc. Test records shall be maintained. Routine tests and verification tests shall meet the requirements specified in relevant product certification implementation rule.
Routine tests are line tests performed on 100% of production and are normally carried out at the final stage of manufacture. Normally no further operations, except for labeling and packing, may be carried out after these tests.
Verification tests are tests in addition to the routine tests on samples taken randomly in order to verify and demonstrate that products consistently meet standard requirements.
6. Inspection and Test Equipment
The equipment used for inspection and test must be regularly calibrated and checked for correct operation, and meet inspection and test capacity requirements.
6.1 Calibration
Inspection and test equipment used for determining the conformity of the products being manufactured shall be calibrated on a regular basis. All calibrations undertaken on such equipment must be traceable to National Standards. Where no measurement standards exist, calibration method, acceptance criteria, calibration interval etc. shall be documented. Easy identification by user and management personnel to calibration status of equipment shall be ensured.
Calibration records shall be kept.
6.2 Functional Check
The equipment used for routine tests and verification tests shall undertake an operational or functional check. When result of functional check is found to be unsatisfactory to applicable requirements, previous tested products shall be traceable, and re-tested if necessary. Operator shall be instructed on what action is to be taken if invalid function of equipment is found.
The results of check and all subsequent corrective action taken must be recorded.
7. Control of Non-conforming Product
Factory shall establish procedure of control of non-conforming product, which shall includes identification method, segregation, disposal, corrective action and preventive action. Repaired and reworked product shall be re-inspected. Records of repairing for critical components or sub-assemblies and disposal of non-conforming product shall be maintained.
8. Internal Audit
Factory shall establish documented internal audit procedure to ensure that product quality system is implemented effectively and certified products compliance. The results of internal audit shall be kept.
Factory shall keep a record of all complaints known, especially to a product’s compliance with requirements of relevant standard, and make these complaints as one of input information of internal audit.
Corrective action and preventive action shall be taken to detected nonconformities and records shall be maintained.
9. Compliance with Certified Product
Factory shall control production to comply with the type-test approved product, to make certified products consistently be in conformity with relevant standard requirements.
Factory shall establish procedure to monitor changes of the critical component, material, construction and factors that may affect compliance with relevant standard. The changes on certified products (which may affect the conformance to relevant standards or compliance with type tested samples) must be notified to the issuing certification body for authorization, prior to their implementation.
10. Packing, Handling and Storage
Finished products shall be packaged, stored and handled in such a way as to ensure that they will continue to comply with the applicable standards.
Annex 2
Requirements for Factory Quality Control Testing in electric tools
|
Type |
Name of products |
Standards |
Relevant IEC standards |
Test items |
Routine test
|
Verification test |
|
Electric tools |
Hand-held motor-operated electric tools
|
GB3883.1
GB3883.2
GB3883.3
GB3883.4
GB3883.5
GB3883.6
GB3883.7
GB3883.8
GB3883.9
GB3883.10
GB3883.11
GB3883.12
GB3883.13
GB3883.14
GB3883.15
GB3883.16
GB3883.17 |
IEC60745-1
IEC60745-2-1
IEC60745-2-2
IEC60745-2-3
IEC60745-2-4
IEC60745-2-5
IEC60745-2-6
IEC60745-2-7 IEC60745-2-8 IEC60745-2-9
IEC60745-2-10
IEC60745-2-11
IEC60745-2-12
IEC60745-2-13
IEC60745-2-14
IEC60745-2-15
IEC60745-2-16
IEC60745-2-17 |
Measuring earthing resistance |
√ |
√ |
|
Input and current |
|
√ |
|
Heating |
|
√ |
|
Endurance test |
|
√ |
|
High-voltage test |
|
√ |
|
Cord bending test |
|
√ |
|
* high-voltage test
no-load test
marking check
|
√ |
|
|
GB 4583 |
ISO 3745 |
Noise measurement |
|
√ |
|
Marble
cutter |
GB3883.18
|
No |
Same as above |
Same as above |
Same as above |
Note:1) 100% routine tests are conducted at the end of production line. The equivalent and quick methods can be used after verification.
2) Verification tests are used to confirm whether the products continuously comply with the requirements specified in the relevant standards. One per batch or at least twice per year.
3)Verification tests may be entrusted to the testing laboratories if the factory is not capable of
4) Mark of“√”indicates that the test items for routing test and/or verification tests are applicable.
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