电线电缆网 > 国外线缆 > 20276 UL要求AC与DC电压是多少？（完整版）
20276 UL要求AC与DC电压是多少？ - 无图版
xuchaowei --- 2009-12-09 09:01:04
1
hnivan --- 2009-12-09 09:45:57
2
UL20276,作低电压音频\视频线使用,如HDMI、电脑周边。。。
电压值为30V
zhengliang --- 2009-12-09 10:14:55
3
UNDERWRITERS LABORATORIES INC. APPLIANCE WIRING MATERIAL
Subj. 758 Section 2 Page 20276 Issued: 1983-08-16
Revised: 2003-06-05
Style 20276 Electronic Cable.
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Rating 60°C or 80°C, 30 V.
______________________________________________________________________________
Insulated No. 40 AWG minimum. Labeled or complying with AWM
Conductors Procedure having a minimum rating of 60°C or 80°C
whichever is applicable.
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Assembly Consists of two or more conductors, twisted pairs,
parallel pairs, or groups of twisted conductors or
parallel pairs twisted together. The conductors or
groups of conductors may be laid parallel forming a flat,
oval or round cable. The lay of the insulated conductors
are not specified. A barrier layer and/or fillers are
optional. Manufacturer shall maintain a complete
description of each assembly. May use same or mixed AWG
size.
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Covering (Optional.) A 6 mil or heavier PVC covering may be
extruded over the conductor assembly.
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Shield Optional.
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Jacket PVC, Class 43.
Thickness (mils)
Construction A Construction B
External Use Internal Use
#Dia. under Minimum Minimum
jacket in Minimum at Minimum at
inches__ Average any Point Average any Point
0.350 or less 20 17 15 12
0.351 - 0.700 30 24 30 24
0.701 - 1.00 40 36 40 36
0.101 - 1.50 54 48 54 48
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Standard Appliance Wiring Material UL 758.
______________________________________________________________________________
(Continued on Page 20276A)
UNDERWRITERS LABORATORIES INC. APPLIANCE WIRING MATERIAL
Subj. 758 Section 2 Page 20276A Issued: 1983-08-16
Revised: 2003-06-05
Instructions Detailed Examination.
to UL Physical Properties of Jacket.
Representative
The designation of all Styles of the individual
conductors used making up the cable assembly shall be
available, and the UL Representative's tag shall indicate
if the Style is labeled or not. If they are not labeled,
the appropriate Follow-Up Tests shall be conducted.
______________________________________________________________________________
UL (4) Detailed Examination.
*Counter-Check (4) Physical Properties of Jacket.
*Program (4) Heat Shock.
* (4) Cold Bend.
* (4) Deformation.
(12) Cable Flame Test on Completed Cable,
Construction A only.
(12) Horizontal Flame Test on Completed Cable,
Construction B only.
If the insulated Styles are not labeled, the appropriate
Follow-Up Tests shall be conducted.
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Marking General.
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Use Construction A: Internal wiring or external
interconnection of electronic equipment in Class 2
circuits only.
Construction B: Internal wiring of electronic equipment
in Class 2 circuits only.