GB 9326.2-1988 Oil-paper insulated self-contained oil-filled cables and accessories for AC 330 kV and below Oil-paper insulated self-contained oil-filled cables
Some standard content:
National Standard of the People's Republic of China
Oil-filled paper-insulated cables and accessories for alternating voltagesuptoandincluding330kvOil- filled paper-insulated cablesGB9326.2-88
This standard is equivalent to the provisions of the international standard IEC141-1 (1976) "Paper-insulated, metal-sheathed, oil-filled cables and accessories with AC voltage 400kV and below". | | tt | Oil cable. 1.2 In addition to complying with the requirements of this standard, the cable should also comply with the requirements of GB9326.1 "General Provisions for Oil-Paper Insulated Self-Contained Oil-Filled Cables and Accessories for AC 330kV and Below". 2 Usage characteristics
2.1 The maximum allowed working voltage of the cable
110~220kV cable is 1.15 times the rated voltage; 330kV cable is 1.1 times the rated voltage.
2.2 Oil pressure range
The oil pressure at any point and at any time on the line should be greater than 0.02MPa; according to the structure of the cable reinforcement layer, the maximum allowable steady-state oil pressure can be divided into 0.4MPa and 0.8 MPa two categories.
2.3 Cables generally cannot be laid at ambient temperatures below 0°C. 2.4 The bending radius when laying cables is not less than 25 times the outer diameter of the cable. After laying, the bending radius of the cable shall not be less than 20 times the outer diameter of the cable. 3 Cable models
Various cable models should comply with the requirements in Table 1.
Table 1
Type
No.
CYZQ102
CYZQ302
CYZQ141
Name
Name| |tt||Copper core paper insulated lead clad copper tape radially reinforced PVC sheathed self-contained oil-filled cable Copper core paper insulated lead clad copper tape radially and longitudinally reinforced PVC sheathed self-contained oil-filled cable Copper core paper insulated lead clad copper tape radially reinforced steel wire armored self-contained oil-filled cable National Machinery Industry Commission approved 1988-05-23 and implemented on 1989-01-01
4 cable specifications
cable The specifications should comply with Table 2.
Rated voltage
kv
110
220
330
GB9326.2-88
Table 2|| tt | 00400 ,500,(600),630,800,(900),1000Note: The values ??in brackets are not recommended for cutting. 5 Materials
5.1 Conductor copper shall comply with the regulations of GB3953 "Electrical Round Copper Wire". 5.2 Insulating paper should comply with the requirements in Table 3.
5.3 Semiconductive Paper Single-color semiconductive paper and two-color semiconductive paper should comply with the regulations of GB7971 "Semiconductive Cable Paper". 5.4 Insulating oil should comply with the requirements in Table 4.
The 5.5 sheath lead should comply with the requirements of GB469 "Lead Ingot" and should not be lower than No. 5 lead. Table 3
Serial number
1
2
3
5
6
7
8
9
10
11
12
13
14
Project name
Fiber matching Than natural kraft wood pulp (%)
Thickness and allowable error (mm)
Density and allowable error (g/cm)
Air permeability (mL/min) is not greater than | |tt|| Tension (kg) is not less than longitudinal/transverse direction
Elongation (%) is not less than longitudinal/transverse direction
Transverse tearing degree (g) is not less than
Moisture content (%)
Ash content (%) is not less than
Sodium content (mg/kg) is not less than
water extractant pH value
water extractant conductivity (ms /m) is not greater than
AC breakdown voltage (V) is not less than
Dielectric loss tangent (dry paper)
100℃ (%) is not greater than (oil paper)||tt ||045μm
100
0.045±0.004
0.80±0.05
10
5.0/2.5
2.0/6.5||tt ||20
8
0.30
40
6.5~8.0
5.0
400
0.20||tt ||0.26
Performance Index
Standard
075μm
100
0.075±0.005
0.80±0.05
15
9.0/4.0
2.3/7.0
50
8
0.30
40
6.5~8.0|| tt||5.0
600
0.20
0.26
125μm
100
0.125±0.007
0.80±0.05
20
14.0/6.5
2.3/7.0
125
8
0.30
40||tt| |6.58.0
5.0
950
0. 20
0.26
175μm
100
0.175±0.010
0.80±0.05
20
18.0/9.0
2.3/7.0
190
8
0.30|| tt||40
6.5~8.0
5.0
1200
0.20
0.26
Appearance
Kinematic viscosity, cst50℃
20℃
Project name
Flash point (closed), ℃ is not lower than
freezing point, ℃ is not higher than
tgo: 50Hz
Before aging at 100℃
not greater than
after aging
not greater than
breakdown voltage, kV not less than
electric field gas evolution Property, μl/min is not greater than
6 Technical requirements
6.1 conductor
GB9326.2—88
Table 4
Indicators
Colorless and transparent
3～4
6.5~8.5
125
60
0.0015
0.0020
60| | tt | | 60 |
6.1.2 The conductor should be made of soft round copper single wire or soft copper type wire. 6.1.3 The surface of the conductor should be smooth and clean, and no burrs, sharp edges, or individual single line bulges or breaks that damage the conductor shielding are allowed. 6.2 Shielding
The conductor shielding and insulation shielding are composed of single-color semi-conductive paper and a layer of two-color semi-conductive paper. The thickness of the shielding layer is 0.4~0.6mm. The outer layer of the conductor shield is a two-color semi-conductive paper, and the insulating side of the two-color semi-conductive paper faces the insulating layer. The inner layer of the insulation shield is made of two-color semi-conductive paper. The insulation surface of the two-color semi-conductive paper faces the insulation layer. The surface of the insulation shield layer is also allowed to be wrapped with a thin copper tape with a large gap. 6.3 Insulation
6.3.1The insulation consists of oil-impregnated paper. The thickness of the insulation layer should comply with the requirements in Table 5. Table 5
Rated voltage
kv
110
220
330
Minimum insulation thickness
mm||tt ||10.5
19.0
25.0
6.3.2 After the bending test, more than two overlapped tears of adjacent insulating paper tapes are not allowed in the 300mm long sample , adjacent insulating paper strips are not allowed to have more than two gaps overlap, and up to three gaps are allowed to overlap in the opposite direction of the paper package. The number of insulating paper tapes with longitudinal tears or edge tears exceeding 7.5mm shall not exceed two. 6.4 Lead sheath
6.4.1 The lead sheath should be made of lead alloy. The alloy composition is: antimony 0.4% ~ 0.8%, copper 0.08% or less, the balance is lead, or tellurium 0.04% ~ 0.10%, arsenic 0.12%0.20%, tin 0.10%~0.18% and bismuth 0.06%~0.14%, the balance is lead. 6.4.2 The lead sheath should expand on the cone to 1.3 times the diameter of the cable in front of the lead sheath without cracks. 6.4.3 The thickness of the lead sheath should comply with the requirements in Table 6. Lead package front diameter
≤50
>50～70
>70
CYZQ102
nominal thickness
3.0||tt ||3.5
4.0
GB9326.2—88
Table 6
CYZQ302
Minimum thickness
2.7
3.2
3.7
nominal thickness
3.5
4.0
4.5
minimum thickness
3.2||tt| |3.7
4.2
CYZQ141
nominal thickness
3.5
4.0
4.5
mm||tt| | Minimum thickness | | tt | | 3.2 | | tt | Surface scratches should be repaired, but the requirements in Table 6 must be ensured.
6.5 Outer sheath
6.5.1 The outer sheath of the cable shall comply with the concentric layer composition specified in Table 7. 6.5.2 The lining layer should be tightly wrapped on the lead sheath, and its thickness should not be greater than 0.5mm. 6.5.3 Ordinary cable reinforcement layers use copper strips (or stainless steel strips) for radial reinforcement; cables that can withstand larger tension use copper strips (or stainless steel strips) for radial reinforcement and narrow copper strips (or stainless steel strips) for longitudinal reinforcement. Its protective layer consists of a waterproof layer and a polyvinyl chloride extruded sheath. 6.5.4 There should be a protective layer composed of a waterproof layer and an extruded polyvinyl chloride sheath outside the reinforced layer of underwater cables. In addition to the protective layer, thick steel wire armor and outer coating should be added. The thick steel wire armored single-core cables must have magnetic isolation. Measures, the outer cover layer is composed of waterproof and wear-resistant fiber layers such as polypropylene rope. Table 7
Type
No.
CYZQ102
CYZQ302
CYZQ141
Inner lining
Asphalt-plastic belt| |tt|| (or a waterproof layer with equivalent performance
)
Asphalt-plastic tape
(or a waterproof layer with equivalent performance
)
Asphalt -Plastic tape
(or waterproof layer with equivalent performance
)
reinforcement layer
radial copper tape (or
stainless steel tape)||tt ||radial copper strip (or
stainless steel strip) longitudinal
narrow copper strip (or
stainless steel strip)
radial copper strip (or ||tt ||Stainless steel belt)
Outer sheath structure
Protective layer
Plastic belt (or
quite waterproof
layer) - Polyvinyl fluoride
set)
armor layer
thick steel wire
outer jacket
plastic tape (or performance
equivalent waterproof layer)- Poly
vinyl chloride sleeve
plastic tape (or performance
equivalent waterproof layer)-poly
vinyl chloride sleeve
viscose coating-polypropylene|| tt | Local damage is allowed to be repaired with the same material used to make the sheath, but the requirements in Table 8 must be ensured. Table 8
nominal diameter before sheath
≤70
>70~85
>85
6.6 finished cable
finished product The performance of the cable should comply with the test requirements in Chapter 7. Degree
Nominal thickness of sheath
3.5
4.0
4.5
mm
7 test items and methods
7.1 The test items and methods are as specified in Table 9. 7.2 Routine tests
7.2.1 Conductor DC resistance test
GB9326.2-88
The DC resistance of the conductor should be measured on the coiled cable; its resistance value is converted to 20℃ , the resistance value of 1km should not be greater than the requirements in Table 10. Table 9
Serial number
1
1.1
1.2
1.3
1.4
2
3
4
5
6
8
9
10
11
12|| tt||13
14
15
16
17
knot
guide
check items||tt ||Structure
Body
Insulation and shielding
Lead sheath
Outer sheath
Conductor DC resistance test
Capacitance test| |tt||Dielectric loss tangent test
AC voltage test
Sheath DC withstand voltage test
Lead sheath sealing test
Cable oil sample test|| tt||Mechanical performance test
Lead sheath expansion test
Dielectric loss tangent/temperature test
AC long-term withstand voltage test
Lightning impulse voltage test||tt ||Operating impulse voltage test
Lead sheath and reinforcement layer hydraulic test
Outer sheath asphalt dripping test
Outer sheath scraping test
Standard provisions| |tt||6.1
6.3,6.2
6.4
6.5
7.2.1
7.2.2
7.2.3| |tt||7.2.4
7.2.6
7.2.5
7.2.7
7.3.2
7.3.3||tt ||7.4.1
7.4.2
7.4.3
7.4.4
7.4.5
7.4.6
7.4.7
Test type
S
R
S
T
Test method
Object||tt ||Test
Article 7.3.1.2 of this standard
Article 7.3.1.3 of this standard
GB2951.3
GB3048.4
GB3048. 11
GB3048.11
GB3048.8
Article 7.2.6 of this standard
Article 7.2.5 of this standard
GB507||tt ||Article 7.3.2 of this standard
Article 7.3.3 of this standard
GB3048.11
GB3048.8
GB311
GB311| |tt||Article 7.4.5 of this standard
Article 7.4.6 of this standard
Article 7.4.7 of this standard
Nominal cross-section, mm
120
150
185
240
(270)
300
GB9326.2--88
Table 10
DC resistance, Q/km
0.150
0.122
0. 097 2
0.074 0
0.0668
0.0590
Before the test, the cable should be in the test room for at least Leave for 12h. Nominal cross-section, mm
400
500
(600)
630
800
(900)
1000
If there is doubt whether the conductor temperature is the same as the ambient temperature, the storage time should be extended to 24h. 7.2.2 Capacitance test
DC resistance, Q/km
0.0461
0.0366
0.0297
0.0283
0.0221||tt| |0.0196
0.0176
The capacitance between the conductor and the insulating shield should be measured with an AC bridge at power frequency. The measured value should not be greater than 8% of the specified value. 7.2.3 Dielectric loss tangent test
At ambient temperature, the dielectric loss tangent tg of the coiled cable should comply with the provisions of Table 11. If the ambient temperature is lower than 20°C, the measurement results should be corrected to 20 as shown in the following formula °C to tg, if the ambient temperature is equal to or higher than 20 °C, no correction is required.
tgo20r=1—0.02(20-t)Jtgd.
where: tgo20c
tgo.
rated voltage
kv||tt| |110
220
330
tg? value converted to 20℃:
The measured value of tg at room temperature t℃.
Table 11
Maximum dielectric loss angle tangent value
U.
0.0033
0.0030
0.0028
7.2.4 AC voltage test
.
0.0036
0.003 4
2U
0.004 5
The difference in maximum dielectric loss tangent
U. with 2U. between
0.001 4
U. With No. 1 U. Between
0.0007
0.0007
The finished cable should withstand the power frequency voltage test specified in Table 12 (the DC voltage test can also be used instead), and the insulation should not be broken down. The test is carried out at ambient temperature, and the duration of voltage application is 15 minutes. Table 12
Rated voltage
Test voltage
Routine test, sampling test
U
110
220
330
U.
64
130
200
communication
stream
138
225
345|| tt||straight
flow
330
545
825
type test
cross
flow||tt ||160
325
445
kv
7.2.5 Lead sheath sealing test
GB9326.2—88
The lead sheath sealing test should be carried out before the cable is armored. The cable should not leak oil after 2 hours under a pressure of 0.5~0.6MPa. If it leaks, it is allowed to be repaired until it meets the requirements.
7.2.6 Sheath DC withstand voltage test
The PVC sheath of the finished cable should withstand a DC voltage of 25kV for 1 minute without breakdown. The voltage is applied to the metal sheath. Or between the armor and the graphite conductive layer or water bath on the surface of the polyfluoroethylene sheath. 7.2.7 Cable oil sample test
2 to 10 days and nights after the cable insulation impregnation is completed and 2 to 10 days and nights after the factory pressure box of the connecting cable is filled with oil, the oil samples taken out from the cable oil channel and pressure box should comply with the following The following regulations:
When the oil temperature is 20±10℃, the power frequency breakdown strength should not be less than 50kV/2.5mm; when the oil temperature is 100±1℃ and the electric field gradient is 1kV/mm, tg? should be less than that in Table 13 Regulation. Table 13
Rated voltage, kV
110,220
330
7.3 Sampling test
7.3.1 Structural test
7.3.1.1 Conductor Structural inspection
The conductor structure shall comply with the provisions of Article 6.1. 7.3.1.2 Measurement of insulation thickness
tg8
0.005
0.003
The insulation thickness should comply with the provisions of Table 5, and the diameter measuring tape method or thickness micrometry can be used Measuring method. a. Diameter measuring tape method
Peel off the insulating shielding tape from the sample until the insulated core is exposed. Use a diameter measuring tape to measure the diameter of the insulated core at 50mm and 100mm from the end of the insulated core. Diameter The scale graduation of the measuring tape should not be greater than 0.5mm. Then, peel off the insulation to expose the conductor shield, and use a diameter measuring tape to measure the diameter of the conductor shield. The insulation thickness at each measurement point is calculated by half the difference between the diameter of the insulated core measured at that point and the diameter of the foreign shield.
b. Thickness micrometer method
Stack the paper strips peeled off from the sample together. It is not necessary to remove excess impregnating agent. Use a thickness micrometer to measure the total thickness. If necessary The insulation can be measured in several small sections.
The accuracy of the micrometer should be 0.005mm, the diameter of the measuring rod should be no less than 6mm and no more than 8mm, and the applied pressure should be 350kPa ±5%. The two end surfaces of the measuring rod and measuring base should be parallel and concentric, and the parallelism within the stroke range should be within 0.003mm. 7.3.1.3 Measurement of lead sheath thickness
The thickness of lead sheath is measured by the narrow strip method or the ring method. The thickness of the lead sheath should comply with the requirements in Table 6. a. Narrow strip method
Cut a lead sheath sample about 50mm long from the finished cable, cut it lengthwise, and smooth it carefully; after wiping it clean, the circumference of the lead sheath should be no less than 10 inches from the edge of the sample. Multi-point measurement at 10mm. The accuracy of the micrometer should be 0.01mm, and the diameter of the measuring rod should be 4~8mm. b. Ring method
Carefully cut the lead sheath ring from the sample, and measure at multiple points along the circumference of the ring to ensure that the minimum lead sheath thickness is measured. The micrometer shall have an accuracy of 0.01 mm and shall have a flat end surface measuring seat and a spherical surface measuring rod, or a flat end surface measuring seat and a flat rectangular surface measuring rod 0.8 mm wide and 2.4 mm long. 7.3.1.4 Outer sheath thickness measurement
GB9326.2-88
The thickness of each component of the outer sheath shall be measured in accordance with the provisions of GB2951.3 "Measurement Method for Thickness of Wire and Cable Sheath". The thickness of the polyfluoroethylene outer sheath should comply with the requirements in Table 8. 7.3.2 Mechanical performance test
Mechanical performance test includes cable bending test and subsequent electrical test and physical inspection. 7.3.2.1 Bending test
At ambient temperature, according to the provisions of GB2951.23 "Bending Test Method for Wires and Cables", the sample is placed on a cylinder with a diameter of 25 (D+d) (deviation +5%) Repeat the bending 3 times. Among them: D—outer diameter of lead sheath, mm, d—outer diameter of conductor, mm. 7.3.2.2 AC voltage test
The cable sample after the bending test shall be subjected to the AC voltage test specified in Clause 7.2.4. 7.3.2.3 Inspection of lead sheath and outer sheath
After conducting the AC test according to item 7.3.2.2, a sample about 1m long should be removed from the middle of the cable sample, peeled off and inspected. The outer sheath should not have cracks, the reinforcement layer should not be significantly displaced or damaged, and the lead sheath should be free of cracks and splits. 7.3.2.4 Insulation inspection
After inspecting according to item 7.3.2.3, remove the 300mm long sample from the middle of the sample, remove the metal sheath and check whether the paper tape (excluding shielding paper) is torn and Clearances shall comply with the provisions of Clause 6.3.2. 7.3.3 Lead sheath expansion test bzxz.net
The lead sheath expands on the cone to 1.3 times the front diameter of the lead sheath and should not break. Place the 150mm long lead pipe on the cone. The ratio of the diameter and height of the bottom of the cone is 1:3. During the test, the lead pipe should be lubricated with oil, the bottom of the cone should be thrown vertically, and then the lead pipe or cone should be rotated. The test should be carried out until the lead pipe is expanded to the required inner diameter. 7.4 Type test
Type test specimens should be taken from finished cables that have passed routine tests and sampling tests. Sections 7.4.1, 7.4.2, 7.4.3, 7.4.The tests specified in paragraph 4 can be carried out on four cable specimens respectively, or on only one cable specimen. If more than one test is performed on a cable sample, the test procedure shall be determined by the manufacturer. If the second or subsequent test fails to meet the requirements, the failed test shall be repeated on a new cable specimen. The length of the cable sample below the terminal tail pipe should be at least 10m, and the oil pressure at the highest point of the terminal should be maintained at the lowest working oil pressure, with a deviation of +25%. 7.4.1 Dielectric loss tangent/temperature test The dielectric loss tangent should be at the rated voltage U. When measured under the following conditions, the dielectric loss tangent shall not exceed the test voltage U in Table 11 in any case. specified value.
a. At ambient temperature, but the cable temperature does not exceed 25°C; b. Heated until the cable conductor temperature reaches 85°C and is fully stable; the heating method can be any of the following: heating only the metal sheath , or heat the conductor and metal sheath or only heat the conductor; c. During cooling, when the conductor temperature is about 60°C and 40°C; d. Cool to ambient temperature.
7.4.2 AC long-term withstand voltage test
According to the cable sample after the bending test in item 7.3.2.1, conduct the AC withstand voltage test at ambient temperature. The cable should withstand the voltage specified in Table 12 Power frequency test voltage for 24 hours, the insulation should not break down. 7.4.3 Lightning impulse voltage test
According to the cable sample after the bending test in item 7.3.2.1, heat the cable conductor to 80℃ with a deviation of +5℃, keep it for at least 2h and then apply the impact specified in Table 14 Test the positive and negative polarity of the test voltage (bee value) 10 times each, and the insulation should not break down. After the impulse voltage test is completed, the cable sample should be subjected to a power frequency voltage test at ambient temperature or at any temperature during the cooling process. The test shall be carried out in accordance with the provisions of Section 7.2.4, and the cable insulation shall not break down. Rated voltage
110
220
330
GB9326.2-88
Table 14
Lightning impulse test voltage||tt| |450
550
950
1050
1175
1300
Operating impulse test voltage
850||tt ||950
kv
Note: The lightning impulse and operating impulse withstand voltage values ??should not exceed the highest value of the corresponding voltage level listed in Table 14. If a higher insulation level is required, a higher insulation level can be selected. Cables with high voltage levels.
7.4.4 Operating impulse voltage test
The cable sample is heated as specified in Section 7.4.3 and kept for 2 hours before applying the positive and negative polarity of the operating impulse test voltage (peak value) specified in Table 14 3 times each, the insulation should not break down.
After the operational impulse voltage test, the cable sample shall be subjected to a power frequency voltage test at ambient temperature or at any temperature during the cooling process. The test shall be carried out in accordance with the provisions of Section 7.2.4. The cable insulation shall not break down. 7:4.5 Hydraulic test of lead sheath and reinforcement layer
After the bending test, take a 5m long sample and place it on the channel steel or angle iron, and fix it every 1m. Both ends of the cable should be reinforced. One end is connected to the pressure gauge, and the other end is connected to the hydraulic pump to gradually increase the hydraulic pressure to 2 times the maximum design pressure. The lead sheath should not crack. 7.4.6 Outer sheath asphalt dripping test
If the outer sheath of the cable contains asphalt, a 300mm long sample should be taken from the finished cable. Before the test, 40mm of the outer sheath at both ends of the sample should be stripped to the metal sheath. until. After removing the asphalt residue on the metal sleeve, place the sample horizontally in a constant temperature oven. After 4 hours at a temperature of 70 ± 2°C, the asphalt paint should not drip out.
7.4.7 Outer sheath scraping test
After the sample is subjected to the bending test, the scraping test is carried out according to the provisions of GB2951.28 "Scraping Test Method for Extruded Jackets of Wires and Cables". Immerse the sample that has passed the above test into an aqueous solution of 0.5% sodium chloride and approximately 0.1% by weight of a suitable nonionic surfactant at room temperature for at least 24 hours. The copper strip and lead sheath are welded together as the negative electrode. A DC voltage of 20kV is applied between the lead pack and water for 1 minute. Lightning impulse voltage is applied according to Table 15, with positive and negative polarity 10 times each. There should be no breakdown. Table 15
Cable rated voltage
110
220
330
Impact test voltage
37.5
47.5|| tt | | 62.5 | | tt | | kv |
8 Acceptance Rules
8.1 The manufacturer shall conduct routine tests, sampling tests and type tests in accordance with the requirements of this standard. 8.2 Products should be inspected by the quality inspection department of the manufacturer before they can leave the factory. Each cable shipped from the factory should be accompanied by a product inspection certificate. According to user requirements, the manufacturer should provide product test reports. 8.3 Products shall be inspected and accepted according to the test items specified in Table 9.1% by weight of a suitable nonionic surfactant in water for at least 24 hours. The copper strip and lead sheath are welded together as the negative electrode. A DC voltage of 20kV is applied between the lead pack and water for 1 minute. Lightning impulse voltage is applied according to Table 15, with positive and negative polarity 10 times each. There should be no breakdown. Table 15
Cable rated voltage
110
220
330
Impact test voltage
37.5
47.5|| tt | | 62.5 | | tt | | kv |
8 Acceptance Rules
8.1 The manufacturer shall conduct routine tests, sampling tests and type tests in accordance with the requirements of this standard. 8.2 Products should be inspected by the quality inspection department of the manufacturer before they can leave the factory. Each cable shipped from the factory should be accompanied by a product inspection certificate. According to user requirements, the manufacturer should provide product test reports. 8.3 Products shall be inspected and accepted according to the test items specified in Table 9.1% by weight of a suitable nonionic surfactant in water for at least 24 hours. The copper strip and lead sheath are welded together as the negative electrode. A DC voltage of 20kV is applied between the lead pack and water for 1 minute. Lightning impulse voltage is applied according to Table 15, with positive and negative polarity 10 times each. There should be no breakdown. Table 15
Cable rated voltage
110
220
330
Impact test voltage
37.5
47.5|| tt | | 62.5 | | tt | | kv |
8 Acceptance Rules
8.1 The manufacturer shall conduct routine tests, sampling tests and type tests in accordance with the requirements of this standard. 8.2 Products should be inspected by the quality inspection department of the manufacturer before they can leave the factory. Each cable shipped from the factory should be accompanied by a product inspection certificate. According to user requirements, the manufacturer should provide product test reports. 8.3 Products shall be inspected and accepted according to the test items specified in Table 9.
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