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GB/T 34016-2017 English PDF (GBT34016-2017)

GB/T 34016-2017 English PDF (GBT34016-2017)

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GB/T 34016-2017: Generality of rat and termite proof wires and cables

This Standard stipulates the product classification, marking, technical requirements, inspection rules and test methods of rat and termite proof wires and cables. This Standard is applicable to wires and cables equipped with rat-proof characteristic; wires and cables equipped with termite-proof characteristic; wires and cables which have both characteristics in rat and termite proof.
GB/T 34016-2017
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 29.060.20
K 13
Generality of Rat and Termite Proof Wires and Cables
ISSUED ON: JULY 12, 2017
IMPLEMENTED ON: FEBRUARY 1, 2018
Issued by: General Administration of Quality Supervision, Inspection and Quarantine;
Standardization Administration of the PEOPLE Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 4
4 Product Classification and Marking ... 5
5 Technical Requirements ... 7
6 Inspection Rules ... 8
Appendix A (normative) Confirmatory Test Method of Rat-proof Characteristic of Large-diameter Wires and Cables ... 11
Bibliography ... 13
Generality of Rat and Termite Proof Wires and Cables
1 Scope
This Standard stipulates the product classification, marking, technical requirements, inspection rules and test methods of rat and termite proof wires and cables. This Standard is applicable to wires and cables equipped with rat-proof characteristic; wires and cables equipped with termite-proof characteristic; wires and cables which have both characteristics in rat and termite proof.
2 Normative References
The following documents are indispensable to the application of this document. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document. GB/T 2900.10 Electrotechnical Terminology - Electric Cables
GB/T 2951.12 Common Test Methods for Insulating and Sheathing Materials of Electric and Optical Cables - Part 12: Methods for General Application - Thermal Ageing Methods
GB/T 50768 Standard for Basic Terminology of Termite Control Project
JB/T 10696.9-2011 Test Methods for Determining Mechanical, Physical and Chemical Properties of Electric Cables and Wires - Part 9: Termite Test
JB/T 10696.10-2011 Test Methods for Determining Mechanical, Physical and Chemical Properties of Electric Cables and Wires - Part 10: Rat Gnawing Test
3 Terms and Definitions
What is defined in GB/T 2900.10 and GB/T 50768, and the following terms and definitions are applicable to this Standard.
3.1 Rat Proof
Rat proof means under the stipulated test conditions, after the test piece and the test rat co-exist for a stipulated period of time, the characteristic of test piece area loss in the most severely bitten area within a limited range.
Example 2: rat-proof Grade-1; copper core PVC insulated steel tape armored PVC sheathed control cable; used for fixed laying; rated voltage: 450/750 V, 24 core; 1.5 mm2; steel tape armoring; without green/yellow two-color insulated wire core; implemented standard: GB/T 9330.2-2008, shall be represented as:
Example 3: rat-proof Grade-2 and termite-proof Grade-1; flame retardant Class-B; ethylene propylene rubber insulated copper wire braided armored elastic outer sheathed marine control cable; rated voltage: 150/250 V, 19 core; nominal cross-sectional area: 1.5 mm2; implemented standard: GB/T 9332-2008 and GB/T 19666-2005, shall be represented as:
5 Technical Requirements
5.1 General Requirements
5.1.1 During the operation, rat-proof and termite-proof wires and cables shall continuously and effectively be equipped with the expected protection performance stipulated in 5.2, 5.3 or 5.4.
5.1.2 No matter what kind of physical protection or chemical protection measures are taken, as long as products with rat-proof, termite-proof or rat and termite-proof characteristics are added, type tests shall be conducted in accordance with the stipulations in 6.1.
5.1.3 Cable materials and their processing technology (including after certain protective measures are adopted) that are selected to implement the rat-proof and termite-proof characteristics shall not affect human health or destroy the surrounding natural ecology and environment.
5.2 Rat-proof Characteristic
The magnitude of rat-proof characteristic of wires and cables shall adopt protection rate value-P, which is determined in JB/T 10696.10-2011, and test piece surface descriptive evaluation after the tests. In addition, it shall also comply with the stipulations in Table 2.
Table 2 -- Magnitude Requirements of Rat-proof Characteristic of Wires and Cables
Code Characteristic Magnitude Test Piece Surface Description after Tests FS1 P ??? 0.9 There are no teeth marks or visible bite marks on the surface of the test piece sheath, and the bite depth shall be less than 1 mm. 6.1.1 The rat and termite-proof characteristic of wires and cables shall adopt type tests for evaluation, which includes characteristic tests of unaged and after accelerated ageing treatment (6.2).
6.1.2 Type test items of rat and termite-proof wires and cables shall comply with, or, fully cover the requirements of various implemented standards provided in the basic model, and the rat-proof and termite-proof characteristic.
6.1.3 In terms of the same model of rat-proof and termite-proof wires and cables of multiple specifications, at least one specification of products shall be taken for tests of the characteristic index. If the test pieces are qualified, then, it can be determined that all the specifications of the model have the stipulated characteristic. 6.1.4 If the manufacturer has a valid type test report of the same basic model of products, which are not attached with the rat-proof and termite-proof characteristic, test pieces for the type tests of corresponding rat-proof and termite-proof products may be randomly taken from the manufacturer, or, from the user?€?s current stock. 6.1.5 Test pieces used for the tests of the rat-proof characteristic of wires and cables shall be taken from any specification of products whose external diameter is not more than 30 mm. When there are multiple options, preferably choose the specification with a smaller external diameter.
6.1.6 Test pieces used for the tests of the termite-proof characteristic of wires and cables may be taken from any specification of products. When there are multiple options, preferably choose the specification with a larger external diameter. 6.1.7 Test pieces used for the tests of the rat-proof and termite-proof characteristic of wires and cables may be taken from any specification of the same product whose external diameter is not more than 30 mm, or, be respectively taken from different specifications of products on the premise of satisfying 6.1.5 and 6.1.6. 6.1.8 Type tests shall be completed by a third-party inspection institution entrusted by the manufacturer. When the user has demands, through the negotiation between the demand-side and the supply-side, type tests may be re-conducted. Under the circumstance that there are no changes in cable materials, or design, or manufacturing process, the re-conducted type test items can merely include characteristic index tests in accordance with the stipulations in 5.2, 5.3 and 5.4.
6.2 Determination of Continuity and Effectiveness
6.2.1 After the accelerated ageing treatment of test pieces of wire and cable products, determine the rat-proof, termite-proof, or rat and termite-proof characteristic magnitude in accordance with the test methods described in 5.2, 5.3 and 5.4. Adopt this method to evaluate its continuity and effectiveness.
6.2.2 The recommended ageing treatment conditions are shown in Table 5. Test Appendix A
(normative)
Confirmatory Test Method of Rat-proof Characteristic of Large-diameter Wires and Cables
A.1 General Principle
This Method is applicable to the confirmation of the rat-proof characteristic of wires and cables (external diameter is more than 30 mm) which are qualified in type tests. This Method is not applicable to relevant rat-proof characteristic test requested in type tests.
A.2 Variety and Breeding of Rats
The variety and breeding of rats shall comply with the stipulations in JB/T 10696.10- 2011.
A.3 Test Methods
A.3.1 Test conditions
A.3.1.1 SD rats: around 12-week-old; mass of female rats: (250 ?? 20) g, mass of male rats: (300 ?? 20) g; quantity: 10 female rats and 10 male rats; 5 rats of the same gender in each cage; respectively 2 cages of rats. Add rat breeding necessities to each cage, namely, sawdust, feeds and water. Breed the rats in a clean-level facility, or above. A.3.1.2 Test pieces: from finished cables, produce sheath strip test pieces; flatten or grind the test pieces to the thickness of (2.0 ?? 0.2) mm. Then, cut 300 mm ??? 30 mm strip test pieces. Produce 8 test pieces in total.
A.3.1.3 Environmental conditions: clean-level, or above.
A.3.1.4 Other articles: micrometer, air condition, balance, water bottle, rat feeds, sterilized clothes, gloves and masks, etc.
A.3.2 Test procedures
Place 2 test pieces in each cage. The test pieces shall be hanged in the middle of the rat cage. Conduct the test for 14 successively days. Maintain normal feeding every day; observe the rats?€? activities, diet and the biting of the test pieces. In addition, complete surface description and the record of time.
A.4 Evaluation of Test Results

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