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有一款線中提到CL2R, 到底什么是CL2R呢。具體標(biāo)準(zhǔn)要參照哪個呢？
還有ZIP cable 是怎么樣的線呢？平行線嗎？
2
1 Scope
1.1 These requirements cover 60 – 250°C (140 – 482°F) single- and multiple-conductor power-limited
circuit cables for use as fixed wiring within buildings (some are also marked for direct burial) principally for
Class 3 and Class 2 circuits as described in Article 725 and other applicable parts of the National
Electrical Code (NEC). Cables covered by these requirements are:
a) Types CL3P and CL2P (plenum cables),
b) Types CL3R and CL2R (riser cables),
c) Types CL3 and CL2 (commercial cables for other than plenum, riser, or tray uses),
d) Types CL3X and CL2X (cables for limited use), and
e) Type PLTC (cable for non-plenum and non-riser Class 3 and Class 2 circuits in general and
in trays).
1.2 Cables for Class 3 circuits are rated for 300 volts but are not so marked. Cables for Class 2 circuits
do not have a voltage rating. See 40.1 (h).
具體請參見UL13標(biāo)準(zhǔn)
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謝謝啦。就是不知道具體是怎么樣的，什么標(biāo)準(zhǔn)都要錢。。
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21 Type CL3R和CL2R電纜的燃燒試驗
21.1 Type CL3R和CL2R電纜應(yīng)遵從UL1666安裝于垂直豎井中的電線和光纜的火焰?zhèn)鞑ジ叨戎蟆Ｒ?/SPAN>1.6（b）。電纜芯線遵從UL 1581中Section 1100熱塑和橡膠絕緣電線電纜之水平試樣燃燒測試要求，若廠商生產(chǎn)的最小直徑的電纜通過此要求，則可認(rèn)為相同結(jié)構(gòu)的其它直徑的電纜也符合要求。
21.2 HDPE,LDPE,或PP絕緣，以及電纜芯線不遵從UL 1581中Section 1100熱塑和橡膠絕緣電線電纜之水平試樣燃燒要求的電纜，測試試樣代表每種結(jié)構(gòu)的所有規(guī)格范圍。一般說來，測試試樣是廠商生產(chǎn)此種結(jié)構(gòu)的最大和最小電纜直徑。
PS:關(guān)于UL13標(biāo)準(zhǔn)我早就發(fā)貼放上來了.
http://jqgyxcq.com.cn/ShowPost.asp?ThreadID=65735
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是UL13中的一種燃燒等級。