Hangzhou Tianli Cable Co., LTD

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Explanation to self-supporting coaxial cables products:
Sesf-supporting coaxial cables are mainly fit for village-to-village wire TV net, its main advantages are convenient far-distance scattered users stringing, tidy lines, stability and reliability.

SYWV(Y)-75型自承式系列电缆结构尺寸

型号SYWV（Y）-75	-5	-7	-9

内导体直经mm	1.00+0.02	1.66+0.02	2.15+0.03
绝缘体外径mm	4.80+0.20	7.25+0.20	9.00+0.25
护套厚度mm	0.80	0.95	1.05
电缆外径mm	7.3+0.30	10.7+0.30	12.8+0.3
参考重量kg/km	53	70	100
自承式另线直径mm	1.0	1.6	2.0

SYWV(Y)-75型自承式系列电缆电气性能

型号SYWV（Y）-75		-5	-7	-9

绝缘电阻MΩ.km		500V直流20℃≥5000	500V直流20℃≥5000	500V直流20℃≥5000
缆芯介电强度KV		1.6	1.6	1.6
护套介电强度KV	火花	3.0	5.0	8.0
护套介电强度KV	浸水	2.0	3.0	5.0
电容PF/m 特性阻抗Ω		52 75.0+3.0	52 75.0+3.0	52 75.0+3.0
回波损耗(db)min	VHF	20	20	20
回波损耗(db)min	UHF	18	18	18
衰减常数db/100m	50MHZ	4.8	3.2	2.4
	200 MHZ	9.7	6.4	5.0
	300 MHZ	11.9	7.9	6.2
	450 MHZ	14.5	9.7	7.6
	550 MHZ	16.8	10.7	8.5
	750 MHZ	19.7	12.9	10.1
	800 MHZ	20.3	13.3	10.4
	860 MHZ	21.0	13.8	10.8
	1000 MHZ	22.7	14.9	11.7

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ADD：West Section of Qianwang Street, Lin`an City, Zhejiang Province	TEL：（0571）63755667 63753158 63712810
FAX：（0571）63755667	POSTCODE：311300 Email:tianlicom@la.hz.zj.cn