GB 13140.5-1998 Connecting devices for low-voltage circuits for household and similar purposes Part 2: Special requirements for twist-type connecting devices
Some standard content:
GB13140.5—1998 | Special requirements for twist-type connection devices.
The safety requirements for connecting devices used in low-voltage circuits for household and similar purposes consist of two parts. Part 1 is the general requirements, and Part 2 is the special safety requirements for the product. This standard is a standard in Part 2: Particular requirements for twist-type connection devices. This standard is used together with GB13140.1-1997 "Connecting devices for household and similar low-voltage circuits - Part 1: General requirements (idtIEC998-1: 1990). It is used as an independent standard for connecting devices for twisted clamping copper conductors. special requirements. All provisions of GB13140.1 that are not specifically mentioned in this standard are applicable to this standard. If content is marked as adding, "changing to" or "replacing" in this standard, the relevant requirements, test specifications or comments of GB13140.1 should be changed accordingly. This standard is the same as GB13140.1 and is divided into 19 Chapter. Chapters and drawings in this standard that are not included in GB13140.1 are numbered starting from 101.
This standard is proposed by the Ministry of Machinery Industry
This standard is under the jurisdiction of the National Technical Committee for Standardization of Electrical Appliances. . Drafting unit of this standard: Guangzhou Electrical Equipment Research Institute. Main drafters of this standard: Su Shihua, He Weien, Wang Xiaoyun. This standard is entrusted to the National Technical Committee for Standardization of Electrical Appliances. GB13140.5—1998
IEC Preface|| tt||The international standard IEC998-2-4 was formulated by the 23F (Connecting Devices) Technical Committee of the IEC Technical Committee 23 (Electrical Accessories). This standard is the first edition of IEC998-2-4 and replaces IEC685-2-4 ( 1983). This standard is based on the following documents:
Draft International Standard Document
23F (Central Office) 48
For details of the voting for this standard, see the voting report listed in the table above . Voting Report
23F (Central Office) 51
This standard shall be used in conjunction with IEC 998-1 (Part 1), thereby becoming an IEC standard for use with copper Requirements for twist-type clamps of conductors (first edition). All provisions of Part 1 that are not specifically mentioned in this standard are applicable. "Replacement" content, the relevant technical requirements, test specifications or notes in Part 1 should be changed accordingly. In this standard, all chapters and figures that are not included in Part 1 are numbered starting from 101. Standard
Connecting devices for low-voltage circuits for household and similar purposes Part 2: Particular requirements for twist-on connecting devices1 Scope
GB13140.1-1997 This chapter is replaced by the following content, GB13140.5-1998
idtIEC998-2-4:1993
The twisted-type connection device of processed hard and/or soft copper wires shall comply with the requirements of GB3958-1983. The cross-sectional area of ??the wires shall be from 0.5mm to 16mm (including 16mm), and the total cross-sectional area shall not exceed 35mm2. The standard applies to low-voltage circuits with voltages not exceeding 1000V (ac) and 1500V (dc) for household and similar purposes. This standard is used together with GB13140.1-1997 "Connecting devices for low-voltage circuits for household and similar purposes - Part 1: General requirements".
In this standard, twist-on connection devices are abbreviated as TOCD. The TOCDs in this standard are designed to be operated primarily by hand, but certain TOCDs, for example those with large connecting conductor cross-sections, may require the use of special tools.
2 Reference standard
GB13140.1-1997 This chapter applies.
Added:
GB17464-1998 Connecting devices - Safety requirements for threaded and non-threaded clamping parts used to connect copper conductors 3 definitions
GB13140.1-1997 Chapter Be applicable.
3.101 twist-onconnecting device (TOCD) A device that is twisted at the ends of two or more wires. 3:102TOCD's connecting capacity range rangeofTOCD's connectingcapacity manufacturer specifies the smallest and thickest single wire cross-section (expressed in mm2 or AWG) that can be safely connected in pairs. This does not prohibit the use of TOCD to connect more than two conductors or to connect conductors whose cross-section exceeds the connection capacity range. 3.103 Gripping dimension (diameter) The maximum dimension perpendicular to the TOCD cable entry hole (see Figure 104). 4 General requirements
GB13140.1-1997 This chapter applies.
The State Administration of Quality and Technical Supervision approved the implementation on 1999-10-01 on December 21, 1999
General instructions in 5 tests
GB13140.5—1998
GB13140. 1-1997 This chapter shall apply except for the following changes. 5.4GB13140.1-1997 This article is replaced by the following content. The new specimens required for the test and the grouping method are as specified in Table 101. Each group of specimens is tested in the specified order. Table 101
Test group
A
C
D
E
F
G
H
1
K
Number of new samples in each group
3
3~48
12 or 24||tt ||6
6
3
6
6 or 12
3
3
chapter||tt ||8
9
10
bar
14.102 and 14.103
12
13
14.101||tt ||14.101.1
14.2
15.101
15.102.1
15.102.2
16
18
Mark
Test sequence
Protection against electric shock
Connection of wires
Torque and tension test
Aging resistance and moisture-proof
Insulation resistance and Electrical strength
Degree of wire damage
Reduce the number of wires before clamping
Mechanical strength (roller)
Temperature rise
Periodic temperature test| |tt||Short-time current resistance test
Heat resistance
Abnormal heat resistance and flame resistance
If the number of samples is less than the number specified in Table 101, items B and C can be combined Do them together, but the test in Chapter 13 should be done first. Main features
GB13140.1-1997 This chapter is applicable except for the following additions. Increase:
6.101 Increase the preferred values ??of rated insulation voltage: 300V and 600V. Classification
GB13140.1-1997 Except for 7.5 and 7.7, this chapter does not apply. And add:
7.101 Classification by type and combination of conductors
TOCD for connecting hard (solid or stranded) conductors; TOCD for connecting soft conductors;
TOCD for connecting hard (solid or stranded) conductors (combined) TOCD combined with flexible wire. 8 Marks
GB13140.1-1997 Except for the following changes, this chapter is applicable. 8.1GB13140.1--1997 This article is replaced by the following: Each TOCD should have the following signs:
1) The following signs should be marked on the TOCD;
GB13140.5—1998
a) Name, trademark or identification mark of the manufacturer or distributor; b) Model number or catalog number;
c) TOCD connection capacity range; ||tt| |d) Rated insulation voltage.
Note, 11
For example:
A TOCD designed to connect at least two wires, if the cross-sectional area of ??the two wires is within the range of 2.5mm to 6mm (inclusive) , then 2.5mm~6mm should be marked on the TOCD. For small TOCDs, if there is not enough surface to mark all markings, only a) and b) need to be marked. 2) In addition, the following marks should be marked on the minimum packaging unit or in the instructions or information in the minimum packaging unit: a) the name, trademark or identification mark of the manufacturer or relevant dealer; b) the model number or product catalog number;
c) Allowable wire combination and TOCD connection capacity range (mm or AWG wire gauge); d) TOCD applicable wire type;
e) If the maximum ambient temperature is high At 40℃, the maximum ambient temperature should be marked (see 7.5 of GB13140.11997); f) Rated insulation voltage;
g) Stripped insulation length;
h) If necessary, connection method , including the correct use of tools. 8.2GB13140.1-1997 This article does not apply. 8.3GB13140.1-1997 The third line of this article is changed to: nmm” or n. TOCD connection capacity range. If the AWG wire gauge number is used to indicate the TOCD connection capacity range, only the number can be marked. 9 Protection against electric shock | |tt||This chapter of GB13140.1-1997 is applicable except for the addition of the following content. The third paragraph of this chapter of GB13140.1-1997 is replaced with the following content. TOCD should be connected to two wires with the smallest cross-sectional area within its connection capacity range. Wires. Connection of wires
10
GB13140.1-1997 This chapter applies, and the following content is added: 10.101TOCD should be able to connect the number and cross-section of hard wires specified by the manufacturer (single or multiple Strands) and/or flexible wires. 10.102 Simply bundle the wires into the TOCD and twist to connect the wires correctly by hand or according to the manufacturer's specifications. Compliance with the requirements of 10.101 and 10.102 is checked by observation. In order to insert the conductors into the TOCD, the conductors to be connected may be bundled but shall not be pre-twisted. In any case, the torque required by 14.103 may be applied. Use new wires and specimens below. This test can be combined with the test of 14.101
10.103 If the wire is removed from the TOCD, it should not be removed by simply pulling the wire, but other operations should be used to remove the wire. Take it out. Check compliance through the tests of 14.101 and 14.102. Adoption instructions:
1] The original text of the note is "In the United States, it is not mandatory to indicate the rated insulation voltage on the TOCD. \Our country must mark the rated insulation voltage. 11 Structure
GB13140.5-1998
GB13140.1-1997 Except for the inapplicability of 11.2~11.5 in this chapter, the rest are applicable, and the following content is added. 11.6 Added:
Although the metal parts in TOCD are not necessarily current-carrying parts, they should be regarded as live parts in this article. Also added:
11.101 The shape of the inner hole of TOCD should ensure that when completed After the wires are connected, TOCD has a sufficient length of insulation material to completely cover the wire insulation to ensure reliable external insulation. Compliance is checked through the test in Chapter 13. 11.102 Insulating parts shall not accidentally separate from live parts or conductor ends, even during disconnection of conductors. Pass manual and Chapter 14 inspection to see if it is qualified. Resistance to aging, moisture-proof, solid matter entry and waterproof harmful entry 12
GB13140.1-1997 Except for 12.3, the rest of this chapter applies, and the following content is added: 12.1 Added:
Note 1 Add the following test specifications at the end: Use 12 specimens for the test, six of which are connected to the largest number of wires with the thinnest cross-section, and the other six are connected to the largest number of wires with the thickest cross-section. The conductors are connected in a predetermined manner using the torque specified in 14.103. The test should also be carried out with another set of 12 specimens without wires connected. 12.2 Added:
Add the following test specifications after the second paragraph of this article: Use the same sample as 12.1 for the test, and also use 12 samples with ceramic insulating materials or thermosetting materials for this test. Replace the fourth paragraph of this article with the following:
Place TOCD in a humid room (box) for 48 hours. Add the following test specifications after Note 2 of this article: After moisture treatment, the sample is still placed in the humidity chamber (box), and the sample that was not connected to the wire during the aging test in 12.1 and the TOCD of ceramic or thermosetting material are connected to the wire. Six of the specimens are connected to the largest number of wires with the thinnest cross-section, and the other six specimens are connected to the largest number of wires with the thickest cross-section. wwW.bzxz.Net
12.3GB13140.1-1997 This article does not apply. 13 Insulation resistance and electrical strength
GB13140.1--1997 This chapter is replaced by the following: 13.1TOCD applies sufficient insulation resistance and electrical strength. Check whether the sample is qualified through the tests of 13.2, 13.3 and 13.4. The test is conducted on a sample that has undergone the aging test in 12.1 and has just undergone the humidity test in 12.2. During the test, the sample should still be in the humidity room (box) or in a room where the sample reaches the predetermined temperature. 13.2 Insulation resistance test
This test is under consideration.
13.3 Bury each sample into a pile of lead shot with a diameter of 1.0mm to 1.5mm, or wrap it in metal foil, using lead shot or metal foil as an electrode. TOCD should be placed in the outer electrode to the edge so that all insulating materials are buried in the outer electrode. However, it should be noted that the metal box must not be pressed into the TOCD.
Apply AC test voltage between the conductor and the external electrode for 1 minute. The voltage value is obtained by the following formula: U,=U:+1 000V
where: U. test voltage;
Ui - rated insulation voltage.
GB13140.5—1998
During the test, TOCD should not cause insulation breakdown. Glow discharges that do not cause a voltage drop can be ignored. 13.4 Use 12 samples that have undergone aging tests and are not connected to wires to do the following test: apply the test voltage between the conductor and the external electrode for 1 minute, then increase to the highest voltage within 3 seconds and then turn off the power immediately. The voltage value is obtained by the following formula:
U,=4U:+1000V
Umx=10U,+1000V
Test voltage (1min);
where. U.
U——rated insulation voltage;
Umax——maximum voltage.
During the test, there should be no flashover phenomenon between the wire and the external electrode. These tests are also used to check compliance with the requirements of Chapters 12 and 17. 14 Mechanical Strength
GB13140.1-1997 Except for the following content, this chapter applies. 14.1GB13140.1--1997 The second paragraph of this article is changed to: TOCD of ceramic or thermosetting materials shall pass the test of 14.2 to check whether it is qualified. Note: TOCD of thermoplastic materials can be considered qualified without testing due to its own material and structure. 14.3GB13140.11997 This article does not apply. Added:
14.101TOCD should be designed and manufactured so that it can clamp the wire without excessive damage to the wire. Compliance is checked by the following test: test with three new specimens that can simultaneously clamp the smallest number of wires with the thinnest cross-section, according to 14.103 requires applied torque. In addition, three specimens that can simultaneously clamp the largest number of wires with the thickest cross-section are used for the test. The wire length should be 75mm longer than the height (H) specified in Table 102 and Figure 107. Each conductor shall undergo the following test:
Put one end of a conductor through a sleeve of appropriate size, and place the sleeve on a flat plate at a certain height H below the test device. The H value is given in Table 102 . The casing should be located on a horizontal plane so that its center line can draw a horizontal circle with a diameter of 75mm and concentric with the center of the TOCD. Then, the plate rotates at a speed of (10 ± 2) r/min. The distance between the mouth of the TOCD and the upper surface of the casing shall be within 15 mm of the height given in Table 102. The bushing can be lubricated to prevent the insulated conductors from twisting and rotating. Hang the magnetic code specified in Table 102 on the end of the wire. The test lasts 15 minutes. The plate should be rotated in the opposite direction of loosening the TOCD. During the test, the wire should neither detach from the TOCD nor break near the TOCD. After the wire is removed from the TOCD, its end should not be damaged that would affect continued use. Table 102
Wire cross-sectional area
mm2
0.5
0. 75
1.0
1.5
2.5|| tt||4.0
Casing hole diameter
mm
6.5
6.5
6.5
6.5
9.5|| tt||9.5
Casing height (H)I>
mm
260
260
260
260||tt ||280
280
corresponds to the base code of the wire
kg
0.3
0. 4
0. 4|| tt||0. 4
0.7
0.9
Wire cutting area
mm
6.0
10.0
16.0
1) The deviation of height H is ±15mm.
GB13140.5—1998
Table 102 (End)
Casing aperture”
mm
9.5
9.5||tt ||13.0
Casing height (H)1)
mm
280
280
300
corresponds to the base of the conductor Code
kg
1.4
2.0
2.9
2) If the casing hole diameter is not large enough, 1.5mm* and 10.0mm* wires should be Twist to insert the casing. You can use a casing with a hole one size larger. 14.101.1 Use the torque specified in 14.103 to connect the largest number of single-core wires with the smallest cross-section to the three new TOCDs, and then remove the TOCDs. , remove one or two wires from each TOCD according to Table 103, then connect these TOCDs to the remaining wires and tighten them with the torque specified in 14.103, and then use these TOCDs to perform the tensile test of 14.103 Table 103 | |tt||The maximum number of solid wires with the finest cross-section
From 3 to 7 (inclusive)
8 and above 8
The number of removed wires|| tt | |tt||Wire, use a new sample for each wire combination. Use the smallest number of hard wires for AJ
A
B-.
c
D
E
F-
G
H
The thickest wire with the largest number of wires.
The smallest number of the thinnest wires and the smallest number of the thickest wires. The smallest number of the thinnest solid wires and the smallest number of the thickest solid wires. | |tt||The thinnest wire with the largest number
The thickest wire with the smallest number
The thickest wire with the smallest number, and the smallest wire diameter is the same. Solid wire, and the wire diameter is a combination of the thickest wire and the thinnest wire. Test K~P with soft (and hard) wires
K
L
M
N-
0-
P-
The thinnest soft wire with the smallest number
The largest number. The thickest flexible wire.
A wire composed of the thinnest flexible wire and the thickest solid wire. -The thickest flexible wire is combined with the thinnest solid wire. The maximum total cross-sectional area of ??the combined conductors and the minimum number of flexible conductors and solid conductors are subject to a torque of 14.103 (see Figure 105). . Then, each wire is subjected to a non-impact pulling force applied along the axis of the connecting device (see Figure 106) for 1 minute. 14.103 The applied torque value should be the smaller of the following A and B (A) 0.11N·m/mm2 times the total cross-sectional area of ??the combined conductor under test; (B) 0.055N·m/mm times the clamping diameter ;The calculation example is shown in Figure 105.
The tensile force value is specified in Table 104.
Wire cross-section area
mm
0.5
0.75
1
1.5
2.5
4
6
10
16
GB13140.51998
Table 104
During the test, the wire should not be in the TOCD Noticeable movement. When tension is applied, the TOCD should not loosen and internal parts should not come out of the TOCD. Force
Pull
N
35
45
55
65
110
150| |tt||180
200
220
Note: The tensile force values ??listed in the above table are higher than those listed in other standards in Part 2 of this standard series and GB17464 , this is because TOCD is unique and specially specified, and it is also a conclusion reached after many years of practice in North America. 14.104 For TOCDs that the manufacturer states must be tightened with tools, use three new TOCDs to connect the largest number of thinnest single-core conductors, and tighten them with a torque of 0.22N·m multiplied by the total area of ??the conductors under test. After the test, check the TOCD with the naked eye (normal or corrected vision without any additional magnification). There should be no changes that will significantly affect continued use, such as cracks, deformation, etc.
15 temperature rise
GB13140.1-1997 This chapter is applicable except that 15.2 and 15.3 are not applicable, and the following content is added: 15.101
a) Three new TOCDs Two insulated hard (solid or stranded) conductors with the same maximum cross-sectional area are connected respectively and tightened with the corresponding torque specified in 14.103.
b) According to the combination listed by the manufacturer, connect the three new TOCDs to one thickest insulated hard wire and multiple thinnest insulated hard wires, and tighten them with the corresponding torque specified in 14.103. The number of the thinnest wires selected from the combination shall be such that the total current in these wires is equal to, but not greater than, the current in the thickest wire. The specimen is supported by wires connected to it. The test conductor with a cross-section not larger than 10mm2 has a length of 1m; the test conductor with a cross-section of 16mm2 has a length of 2m. The test current should be selected from 15.4 of GB13140.1-1997. The current specified in item a) for the corresponding cross-section of the thickest conductor shall be based on the sum of the currents specified in item b) for the thinnest conductor. Then, conduct the test according to the provisions of 15.4 in GB13140.1-1997. 15.102 The electrical properties of TOCDs that transmit contact pressure through insulating parts and TOCDs used with flexible conductors are verified through the tests of 15.102.1 and 15.102.2. When conducting these two tests, the current passing between the two conductors is equal to the test current passing through the interior of the TOCD under test. 15.102.1 Periodic temperature test
The test is carried out on six (12) samples connected to copper wires. The minimum and maximum cross-sectional areas of new conductors shall comply with the manufacturer's specifications. For a pair of TOCDs (six specimens) that can only be connected to hard wires, connect hard (solid or stranded) wires; for a pair of TOCDs (six specimens) that can only be connected to soft wires, connect soft wires; for a pair that can connect all wires TOCD (12 specimens), with hard (solid or stranded) or flexible conductors. The thinnest flexible wires are connected to the three TOCDs in the normal way, and the thickest wires are connected to the TOCDs in the normal way.
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