GB 12528.1-1990 Cables (wires) for railway rolling stock with AC rated voltage 3 kV and below General provisions

This standard specifies the product classification, general technical requirements and test methods, marking and packaging of cables (wires) for railway rolling stock with AC rated voltage 3kV and below. This standard applies to various types of insulated cables (wires) with AC rated voltage 3kV and below for railway rolling stock. The technical requirements for various types of cables (wires) are specified in subsequent standards such as GB12528.2 and GB12528.3. GB 12528.1-1990 Cables (wires) for railway rolling stock with AC rated voltage 3 kV and below General provisions GB12528.1-1990 Standard download and decompression password: www.bzxz.net

National Standards of the People's Republic of China
Cables (wires) for railway vehicles with AC rated voltage 3kV and below
General Provisions
Insulated cables (wires) for railwayvehicles of rated voltages up to and including 3 kvGeneral
1 Subject content and scope of application
GB12528.1-90
This standard specifies the product classification of cables (wires) for railway rolling stock with AC rated voltage 3kV and below, general Technical requirements and test methods, marking, packaging.
This standard applies to various types of insulated cables (wires) with AC rated voltage 3kV and below for railway rolling stock. The technical requirements for various types of cables (wires) are specified in subsequent standards such as GB12528.2 and GB12528.3. 2 Reference standards
2.1 This standard cites the following standards:
Electrical terminology wires and cables
GB2900.10#
GB2951 Test methods for mechanical physical properties of wires and cables GB3048|| tt |
Wire and cable delivery tray
Bare wire test method
GB4909
GB4910
GB6995
Tinned round copper wire||tt ||Methods for identification marks of wires and cables
GB12666
Burning test methods for wires and cables
2.2 When other standards must be quoted, they should be specified in subsequent sections. 3 Terminology, code
3.1 Terminology
3.1.1 This standard adopts the terminology specified in GB2900.10. 3.1.2 AC rated voltage
AC rated voltage is the reference voltage for cable design and electrical testing, expressed in U, and the unit is V. U. It is the effective value of the voltage between any insulated conductor and "ground" (surrounding medium, metal shielding or metal casing, etc.). When the cable is used in an AC system, the rated voltage of the cable should be at least equal to the nominal voltage of the system to ground. When used in DC systems, the nominal voltage to ground of the system should not be greater than the cable 1.5 times the rated voltage. 3.2 Code number and product representation method
3.2.1 Code number
3.2.1.1, series code
3.2.1.2 Conductor code
Copper conductor
3.2. 1.3 Insulation code
ethylene propylene rubber
omitted
chlorosulfonated polyethylene
natural styrene-butadiene rubber|| tt||polyvinyl chloride
cross-linked polyethylene
sheath code
chlorosulfonated polyethylene||tt ||Fluorine rubber
Oil resistance code number
Installed in a location free from mineral oil and fuel oil contamination. Installed in a location contaminated by mineral oil but not fuel oil. Section 3.2.1.6
Heat resistance characteristic code
100℃
Omitted
3.2.2 Product representation Method
3.2.2.1 The product is represented by the model, specification and this standard number, and the composition is as shown in the figure. ■/口
this standard number
color||tt ||Code code for conductor soft or extra soft
Section
Voltage level
Oil resistance code code
Series code
3.2.2.2 Oil resistance properties use "/× "express. "×" is the code for oil resistance properties. 3.2.2.3 When the same type of conductor is used with different specifications, if necessary, the soft conductor is represented by (A) and the extra soft conductor is represented by (B), which are marked after the cross section.
3.2.2.4 The color of the cable (wire), if necessary, should be indicated after the conductor characteristics. 3.2.2.5 Example
GB12528.1—90
a. AC rated voltage 1.5kV, conductor is soft conductor, 4mm2, operating temperature 70C, mineral oil resistant, natural butyl styrene insulated wire, blue , expressed as:
DCXF/215004(A) Blue GB12528.2--90 AC rated voltage 3kV, conductor is a special soft conductor, 95mm2, operating temperature 100C. Resistant to mineral oil and fuel oil, ethylene propylene rubber b .
Insulated chlorosulfonated polyethylene sheathed cable, expressed as: DCEH/2-100
4 material
4.1 conductor
300095(B)||tt ||GB12528.4-90
The copper conductor should be soft round copper wire in compliance with GB2953, or tinned soft round copper wire in GB4910. 4.2 The insulation and sheath materials should ensure that the insulation and sheath of the finished cable meet the specified requirements. 5 Technical requirements
5.1 Conductor
5.1.1 Conductor should comply with the regulations of GB3956. The conductor structure is shown in Table 1. 5.1.2 The single copper wire in the conductor is allowed to be tinned, and the tinned layer should be continuous and uniform. 5.1.3 The surface of the conductor should be smooth, free of oil stains, burrs, sharp edges, and raised or broken single wires that damage the insulation. Table 1 Technical requirements for conductors
Nominal cutting area
B| |tt||A
B||tt ||B
Conductor structure
Number of wires/single wire nominal diameter, mm|| tt||7/0.15
28/0.15||tt| |24/0.20
Conductor resistance at 20℃, 0/km
not greater than
without tin plating
174| |tt||69.2
19.5||tt ||13.3
Tinned
8.21|| tt||5.09
recipe section
300| |tt|| kind
A||tt ||B
GB12528.1—90||tt ||结表1
简体结果
根数/单线確称diameter，mm
196/0.40
1107/0.20
360/0.50|| tt||999/0.30
1332/0.30
1702/0.30
756/0.50||tt| |2109/0.30
1443/0.40
1221/0.50
1891/0.40
1525/0.50
2379 /0.40
20℃时密体resistance，2/km
不这个
不气锡
1.21||tt| |0.780
0.0801|| tt||0.0801
注：①单线根数手机可以表列数数，单线校称包装按线称分利及核根数数定。 ② According to the two sides电视手机手机可以可电体手技。 所锡
0.132| |tt||0.132
5.1.4包面皮电影的电体的电视体可不电行，则应在电体外面包覆的发在电体体的电影的电影的电影。5.2 Insulation
5.2.1 Insulation合电影电体上使合名力剧离而者这些电视连体、电体或plating tin layer。Insulating surface 应平整，色泽共。
5.2.2 The thickness of the insulation thickness shall not be less than the specified standard value. Less than 90% of the standard value and 0.1mm。 5.2.3 Insulation wire 芯应经受GB3048 .9 火花电话电影电影，可以下载电影。火花电话电影灯灯如表2。
表2火花电话电视
火花确称工作。
mm||tt ||0.25
0.25<8≤0.5
0.5<≤1.0
1.0<≤1.5
电视电视(电视值）
kv|| tt||3
电影梦称安全8
1.5<2.0||tt| |2.0<≤2.5
电视电视(设计值）
25|| tt||GB12528.1—90
5.2.4有护套cable（电线）insulation的非电影电影应表表3的实施。把套和insulationonceextrudedout通过cable，testing time应将护套与电影电影后时间，如这是电影，最作用单分包电视的线芯作试样。表3有护套通了(电线)电视的非电影电影通过序号
1||tt| |1.1
3|| tt||3.1
4.1 .1. |tt||primitive property：报张开动
断裂伸长率
水水玻箱治疗油法
治疗者：时间
test results ：时拉开动性性环
断裂伸长率
断裂伸长率性总率
耐奥辈性时
test condition：臭辂自性
test results
low temperature 卷行正视
试样：
未方法
经时间玻箱治疗方法
Temperature
test condition：temperature
test results
low temperature temperature test
未电影||tt| |经水水清箱消水方法
消水电视：Temperature
Test condition：Temperature
test result：断裂伸长率
水|| tt||minimum
minimum
minimum
minimum
minimum
minimum
MPa||tt| |%
非电视电影应电影表4的设计。 cable length long-term allowable working temperature
100±2
168|| tt||20
0.025~0.030
无裂知
100±2
无裂知
100±2
—25±2
100℃
120±2
40||tt ||0.025~0.030
No cracksbZxz.net
120±2
No cracks
120± 2
-25±2
serial number
1.2||tt| |1.2.1
3.2|| tt||4
GB12528 .1—90
Table 4 Non-electrical performance requirements for insulation (unsheathed wire and cable) and sheath units
Tensile strength and elongation at break||tt ||Original properties: Tensile strength
Elongation at break
Air oven aging test
Aging conditions: Temperature
Test results: Resistance Tensile strength change rate
Elongation at break
Change rate of elongation at break
Mineral oil immersion test
Test conditions: Test oil
Oil Temperature
Test results: tensile strength change rate
change rate of elongation at break
volume change rate
fuel oil immersion test|| tt||Test conditions: Test oil
Oil temperature
Test results: tensile strength change rate
change rate of elongation at break||tt| |Volume change rate
Ozone resistance test
Test conditions: ozone concentration
Test results
High temperature pressure test
Sample :
Untreated
Treated with mineral oil
Processing conditions
Examination
Minimum
Maximum| |tt||minimum
max||tt ||MPa
Cable long-term allowable operating temperature
10|| tt||250
70||tt ||-30
See appendix B
See Appendix B
0.025~0.030
No cracks
100℃
250| |tt||120
-30| |tt||-40
+20||tt| |0.025~0.030
No cracks
The oil type, oil temperature and oil immersion time are the same as 2.1, and the oil surface is exposed at both ends during oil immersion
Serial number|| tt||5.1.3
6.1.2||tt| |6.1.3
treated by soaking in fuel oil
processing conditions
test conditions: temperature
time||tt| |Test
Apply pressure on the blade)
Test results: Deformation rate
Low temperature winding test
Sample:
Untreated||tt| |Thermal aging treatment in air oven
Processing conditions
Treatment soaked in fuel oil
Processing conditions
Test conditions: temperature
Test results||tt ||Low temperature tensile test
Sample:
Untreated
After heat aging treatment in air oven
Processing conditions
Treated by soaking in fuel oil| |tt||Processing conditions
Test conditions: temperature
Test results: elongation at break
Examination
GB12528.1—90
Continued table 4
℃| | tt | |70 ℃ | tt | | 50 | | tt | Exposed oil surface
—25±2
No cracks
—25±2
No cracks
Same as 1.2.1
The oil type, oil temperature and oil immersion time are the same as 3.1. When immersing in oil, the oil surface is exposed at both ends
—25±2
—25±2
5.3.1 The sheath that is not extruded once should be tightly packed on the insulated core, but it should be easy to peel off without damaging the insulator. The surface of the sheath should be smooth and uniform in color.
5.3.2 The average thickness of the sheath should not be less than the specified nominal value. If there is no provision for the thinnest point, the thickness of the thinnest point should not be less than 85%-0.1mm of the nominal value.
5.3.3 The non-electrical properties of the sheath should comply with the requirements in Table 4. For cables whose sheath and insulation are extruded at one time, the test should be carried out after the sheath and insulation are separated. If it is impossible to separate, the core of the single extruded sheath is allowed to be used as the sample.
5.4 Finished cable
GB12528.1-90
5.4.1 The outer diameter of the finished cable shall comply with the provisions of each subsequent standard. For circular cables, the difference between the maximum outer diameter and the minimum outer diameter measured on the same cross-section (f value) should not exceed 15% of the specified upper limit of the average outer diameter.
5.4.2 For finished cables whose conductors are tinned copper wires, the tinned copper wires shall withstand the tin plating test specified in Appendix A of this standard. 5.4.3 For cables whose sheath and insulation are extruded at one time, each turn or coil of finished cable shall undergo a water immersion voltage test or a power frequency spark test. The power frequency spark test voltage shall be in accordance with GB3048.9. 5.4.4 Electrical properties of finished cables
5.4.4.1 The electrical properties of finished cables shall comply with the provisions of Table 5. Table 5 Electrical performance requirements of finished cables
Serial number
2.1.1||tt| |2.1.2
Conductor resistance test
Test results
Finished cable voltage test
Sample
Unprocessed
Sample length||tt ||Treated by soaking in fuel oil
Sample length
Processing conditions
After bending
Sample length
Test conditions : Immersion time
Water temperature
Test voltage (AC)
Voltage application time
Test results
Finished cable breakdown test
Test Sample
Untreated
Treated by soaking in fuel oil
Treatment conditions
Test conditions: sample length
flooding time
water temperature
Boost speed
minimum
minimum
minimum
minimum
minimum
minimum
h|| tt||℃
cable rated voltage
comply with the provisions of Table 1 of this standard
10| | tt | ||20±5
No breakdown
No breakdown
No breakdown
24| |tt||20±5
No breakdown
The oil type, oil temperature and oil immersion time are the same as Table 4 No. 3.1. The end is exposed to the oil surface
20±5
20 ±5
Serial number
4.1.2|| tt||5
Test|| tt||Test results: breakdown voltage
Finished cable surface leakage and discharge test
Sample
Untreated
Treated by soaking in fuel oil
Processing conditions:
Test conditions: soaking time
water temperature
leakage current test voltage (AC)
boost speed
test results, leakage current | |tt||Flashover voltage
Finished cable moisture resistance test
Test conditions: sample length
Aqueous solution
Aqueous solution temperature
Time||tt ||GB12528.1—90
Continued Table 5
Minimum
Minimum
Maximum
Minimum
Voltage (DC) test results applied between the sample and the aqueous solution
Insulation resistance test of the finished cable insulated core Test conditions: sample length
Water temperature
Time without water||tt ||Test voltage (DC)
Test results; minimum insulation resistivity of the insulation layer insulation resistance of the insulated core
minimum
minimum
kv||tt ||250V
cable rated voltage
3kv|| tt |
a. The insulation resistivity can be converted from the measured insulation resistance according to the following formula: 2 yuan LR
where: Pv
v insulated wire core Insulation resistivity, m;
—sample length, m;
R—measured insulation resistance of the insulated wire core, Q; D—sample outer diameter, mm; ||tt ||d——Inner diameter of specimen, mm.
60±5||tt| |240
No breakdown
4|| tt||20±5
See Appendix D
incl. Sodium chloride 10g/L aqueous solution
No breakdown
No breakdown
10||tt| |5
No breakdown
300~500
1Same, both ends are exposed when oiling
24|| tt||20±5
Serial number
4.1.1||tt| |4.1.2
5.4.4.2|| tt||Test
Test results: breakdown voltage
Finished cable surface leakage and discharge test
Sample
Untreated
Immersed in fuel oil Processing
Processing conditions:
Test conditions: soaking time
water temperature
leakage current test voltage (AC)
boost speed
Test results, leakage current
flashover voltage
moisture resistance test of finished cable
test conditions: sample length
aqueous solution
aqueous solution temperature||tt ||Time
GB12528.1—90
Continued Table 5
Minimum
Minimum
Maximum
Minimum
Voltage (DC) test results applied between the sample and the aqueous solution
Insulation resistance test of the finished cable insulated core Test conditions: sample length
Water temperature
Time without water
Test voltage (DC)
Test results; Minimum insulation resistivity of the insulation layer Minimum insulation resistivity of the insulated core
Minimum
Minimum||tt ||kv
cable rated voltage
16|| tt |
a. The insulation resistivity can be converted from the measured insulation resistance according to the following formula: 2 yuan LR
where: Pv
v insulated wire core Insulation resistivity, m;
—sample length, m;
R—measured insulation resistance of the insulated wire core, Q; D—sample outer diameter, mm; ||tt ||d——Inner diameter of specimen, mm.
60±5||tt| |240
No breakdown
4|| tt||20±5
See Appendix D
incl. Sodium chloride 10g/L aqueous solution
No breakdown
No breakdown
10||tt| |5
No breakdown
300~500
1Same, both ends are exposed when oiling
24|| tt||20±5
Serial number
4.1.1||tt| |4.1.2
5.4.4.2|| tt||Test
Test results: breakdown voltage
Finished cable surface leakage and discharge test
Sample
Untreated
Immersed in fuel oil Processing
Processing conditions:
Test conditions: soaking time
water temperature
leakage current test voltage (AC)
boost speed
Test results, leakage current
flashover voltage
moisture resistance test of finished cable
test conditions: sample length
aqueous solution
aqueous solution temperature||tt ||Time
GB12528.1—90
Continued Table 5
Minimum
Minimum
Maximum
Minimum
Voltage (DC) test results applied between the sample and the aqueous solution
Insulation resistance test of the finished cable insulated core Test conditions: sample length
Water temperature
Time without water
Test voltage (DC)
Test result; Minimum insulation resistivity of the insulation layer Minimum insulation resistivity of the insulated core
Minimum
Minimum||tt ||kv
cable rated voltage
16|| tt |
a. The insulation resistivity can be converted from the measured insulation resistance according to the following formula: 2 yuan LR
where: Pv
v insulated wire core Insulation resistivity, m;
—sample length, m;
R—measured insulation resistance of the insulated wire core, Q; D—sample outer diameter, mm; ||tt ||d——Inner diameter of specimen, mm.
60±5||tt| |240
No breakdown
4|| tt||20±5
See Appendix D
incl. Sodium chloride 10g/L aqueous solution
No breakdown
No breakdown
10||tt| |5
No breakdown
300~500
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