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E-mail
2306618725@qq.com
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Phone
13215491281
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Address
Liuyanma Industrial Zone, Dacheng County, Langfang City, Hebei Province
Tianjin Cable Factory Rubber Cable Factory
2306618725@qq.com
13215491281
Liuyanma Industrial Zone, Dacheng County, Langfang City, Hebei Province
insulation resistance
Each conductor to be tested is relative to the other conductors bundled together/Shielding/Insulation resistance between armors, using DC 500V Voltage test, Stable charging 1 After minutes,PETheXLPETheF insulation 20℃Each kilometer should not be less than 3000MΩ，GThePVCTheWJ1 insulation At 20 ℃ per square meterIt should not be less than 25MΩ。
6.5.2For cables with separate shielding pairs, when the test voltage is DC 500V，Stable charging 1 Insulation between shields measured minutes laterresistance20At ℃, the distance per kilometer should not be less than1MΩ。
Working capacitor
Cable componentsThe working capacitance and inductance resistance ratio L/R at 1kHz should not exceed the specifications in Table 10
Electrical Characteristics
|
serial number |
Electrical Characteristics |
unit |
insulating material |
||||||||
PE、XLPE |
G |
PVC、WJ1、F |
|||||||||
0.5mm2 |
1.5mm2 |
2.5mm2 |
0.5mm2 |
1.5mm2 |
2.5mm2 |
0.5mm2 |
1.5mm2 |
2.5mm2 |
|||
|
0.75mm2 1.0mm2 |
0.75mm2 1.0mm2 |
0.75mm2 1.0mm2 |
|||||||||
|
1 1.1 1.2
1.3
2 |
Maximum working capacitance unshielded cable Only total shielded cables（except1become Cable components and2Outside the cable component） There is a total blocking1Cable components and Cables with 2 cable components and all cables with individually shielded pairs. Maximum L/R ratio |
pF/m
μH/Ω |
75 75
115
25 |
85 85
125
40 |
90 90
130
65 |
120 120
140
25 |
120 120
140
40 |
120 120
140
65 |
250 250
280
25 |
250 250
280
40 |
250 250
280
65 |
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