電線電纜網(wǎng) > 電力電纜 > 為何中壓力纜絕緣厚度加133%？（完整版）
為何中壓力纜絕緣厚度加133%？ - 無圖版
99號 --- 2006-08-25 16:41:20
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大漠孤狼008 --- 2006-08-26 15:20:11
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我發(fā)表一點個人看法(僅供參考):
1 用戶想提高電纜絕緣的安全裕度.
2 在地下敷設(shè)如果是垂直敷設(shè)(例如煤礦)有可能用增加厚度來增強其抗拉性能.
注:怎么不問一下用戶呢,問到了發(fā)貼告訴我,我也學(xué)習(xí)一下.
zxg133 --- 2006-08-27 15:42:40
3
具不完全了解，這是國外的一些特殊要求的線，我也是略知一二：
關(guān)于百分比的問題結(jié)實如下：國外要求的100%的絕緣厚度其實就是國內(nèi)4.5的厚度，還有的要求是120%，133%等等的，這好象是線路規(guī)定的等級的大小不同所制。
99號 --- 2006-08-31 07:58:03
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bakerchen --- 2006-10-01 09:49:10
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我看這主要是用戶使用的系統(tǒng)有關(guān)系，由于各國的電壓系統(tǒng)不同引起的．ＩＥＣ６０５０２中規(guī)定了Ａ＼Ｂ＼Ｃ三類系統(tǒng)，其中Ｃ類要求最高，用戶要求在8.7/10KV基礎(chǔ)上加１３３％，剛好接近Ｃ類的１２／２０ＫＶ等級．這是我的看法不知當(dāng)否？
ccjzw --- 2006-10-21 08:38:05
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xinpeng --- 2006-10-22 11:01:07
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nanwangyu --- 2006-10-22 12:50:38
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同意樓上說法.但我建議最好看用戶按什么標(biāo)準(zhǔn)要求的.看下該標(biāo)準(zhǔn)和GB要求的絕緣厚度是否相同再說吧.xinpeng:
也可能跟國外電力系統(tǒng)頻率有關(guān),我國的都是50HZ,而國外的就不一樣,有60HZ的或更高的,所以對電纜的要求也會提高!
youfri --- 2006-10-22 13:25:21
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頻率不同，電纜厚度不會相差這么大。
lj720410 --- 2006-10-23 15:40:54
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這跟電壓系統(tǒng)，類似ＩＥＣ６０５０２中規(guī)定了Ａ＼Ｂ＼Ｃ三類系統(tǒng)，其中Ｃ類要求最高，絕緣厚度就厚。
給大家一個15KV系統(tǒng)的結(jié)構(gòu)參數(shù)實例。
15kv 100% Insulation Levels1/C Aluminum, EPR Insulation,1/3 Neutral and Full Neutral, Encapsulating Polyethylene Jacket. SIZE SIZE SIZE SIZE1/3 NEUTRAL <DIV align=right>15KV 100% INSULATION LEVEL </DIV> Conductors Insulation Thickness (MILS) Insulation OD Inches 1/3 Neutral Jacket Thickness (MILS) Approx. Cable OD Inches Approx. Net Wt. Lbs/M Ft. Ampacity?/b>
(AWG or kcm)Number
of StrandsNo. of Wires AWG Condition A Condition B 2 7 175 0.70 6 14 50 1.04 402 125 155 1 19 175 0.74 6 14 50 1.08 435 140 175 1/0 19 175 0.78 6 14 50 1.12 475 160 200 2/0 19 175 0.83 7 14 50 1.17 534 185 225 3/0 19 175 0.88 9 14 50 1.22 615 210 260 4/0 19 175 0.93 11 14 50 1.28 707 235 290 250 37 175 0.98 13 14 50 1.33 784 260 320 350 37 175 1.08 18 14 50 1.46 1009 310 385 500 37 175 1.21 16 12 50 1.63 1305 375 460 750 61 175 1.39 15 10 80 1.93 1839 455 555 1000 61 175 1.54 16 9 80 2.15 2368 525 620 FULL NEUTRAL <DIV align=right>15KV 100% INSULATION LEVEL </DIV> Conductors Insulation Thickness (MILS) Insulation OD Inches Full Neutral Jacket Thickness (MILS) Approx. Cable OD Inches Approx. Net Wt. Lbs/M Ft. Ampacity?/b>
(AWG or kcm)Number
of StrandsNo. of Wires AWG Condition A Condition B 2 7 175 0.70 10 14 50 1.04 450 125 155 1 19 175 0.74 13 14 50 1.08 519 140 175 1/0 19 175 0.78 16 14 50 1.12 594 160 200 2/0 19 175 0.83 13 12 50 1.21 699 185 225 3/0 19 175 0.88 16 12 50 1.26 81 210 260 4/0 19 175 0.93 13 10 50 1.36 972 235 290 250 37 175 0.98 16 10 50 1.41 1115 260 320 350 37 175 1.08 16 9 50 1.57 1408 310 385 <DIV align=right> .files/15-33.gif){kind=small}
</DIV><DIV align=right>15kv 133% Insulation Levels, 1/C Aluminum, EPR Insulation, 1/3 Neutral and Full Neutral, Encapsulating Plyethylene Jacket.</DIV> 1/3 NEUTRAL <DIV align=right>15KV 133% INSULATION LEVEL </DIV> Conductors Insulation Thickness (MILS) Insulation OD Inches 1/3 Neutral Jacket Thickness (MILS) Approx. Cable OD Inches Approx. Net Wt. Lbs/M Ft. Ampacity?/b>
(AWG or kcm)Number
of StrandsNo. of Wires AWG Condition A Condition B 2 7 220 0.79 6 14 50 1.14 467 125 155 1 19 220 0.83 6 14 50 1.18 503 140 175 1/0 19 220 0.87 6 14 50 1.22 546 160 200 2/0 19 220 0.92 7 14 50 1.26 608 185 225 3/0 19 220 0.97 9 14 50 1.32 692 210 260 4/0 19 220 1.02 11 14 50 1.40 811 235 290 250 37 220 1.07 13 14 50 1.45 892 260 320 350 37 220 1.17 18 14 50 1.56 1104 310 385 500 37 220 1.30 16 12 80 1.79 1473 375 460 750 61 220 1.48 15 10 80 2.02 1960 455 555 1000 61 220 1.63 16 9 80 2.25 2502 525 620 FULL NEUTRAL <DIV align=right>15KV 133% INSULATION LEVEL </DIV> Conductors Insulation Thickness (MILS) Insulation OD Inches Full Neutral Jacket Thickness (MILS) Approx. Cable OD Inches Approx. Net Wt. Lbs/M Ft. Ampacity?/b>
(AWG or kcm)Number
of StrandsNo. of Wires AWG Condition A Condition B 2 7 220 0.79 10 14 50 1.14 515 125 155 1 19 220 0.83 13 14 50 1.18 587 140 175 1/0 19 220 0.87 16 14 50 1.22 665 160 200 2/0 19 220 0.92 13 12 50 1.30 773 185 225 3/0 19 220 0.97 16 12 50 1.35 890 210 260 4/0 19 220 1.02 13 10 50 1.48 1076 235 290 250 37 220 1.07 16 10 50 1.53 1224 260 320 350 37 220 1.17 16 9 50 1.66 1503 310 385
學(xué) --- 2006-10-25 15:05:05
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hehw --- 2006-11-25 09:01:30
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lll333 --- 2006-12-02 11:31:56
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jzligy --- 2006-12-05 11:44:53
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寶豐電纜 --- 2006-12-22 12:42:28
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目前我公司為國外用戶提供的中壓電纜多數(shù)標(biāo)準(zhǔn)為12/20KV,有的用戶要求銅屏蔽層全部是銅絲!
幸福時刻 --- 2006-12-26 19:17:06
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跟電纜接地故障時間有關(guān),按照IEC標(biāo)準(zhǔn),應(yīng)該是電纜接地的C類系統(tǒng),A類為100%水平,B類為115%水平,C類為133%水平!
ghjwalsin --- 2007-01-01 14:36:38
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這是根據(jù)電力系統(tǒng)的接地方式對電纜絕緣耐壓能力的要求決定的.
碧華 --- 2007-03-15 09:41:32
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yongyxt --- 2007-03-22 09:10:41
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Calf --- 2007-03-24 05:11:27
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Go check the ICEA S-94-649-2004 standard (page 21). For 100% level, cable in this category may be applied where the system is provided with relay protection such that ground faults will be cleared as rapidly as possible, but in any case within 1 minutes. And for 133% level, a little bit longer, but not exceeding 1 hour. Hope it's helpful.
中華 --- 2007-03-29 19:18:54
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ludiyuanyi --- 2007-04-04 16:44:08
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guying8 --- 2007-06-27 10:32:52
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xdifen --- 2007-07-07 13:57:03
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stonezhao --- 2007-07-12 15:29:48
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我個人理解， 這是企業(yè)標(biāo)準(zhǔn)， 企業(yè)所在地的安全試驗要求高
yvhkdv --- 2007-08-04 10:12:14
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上面的絕緣皮厚標(biāo)準(zhǔn)值得借鑒.
pdsdqgy --- 2007-08-14 15:53:41
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wangfuzhi --- 2007-08-16 12:50:17
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安全裕度問題，美國標(biāo)準(zhǔn)就是要考核1.33倍電性能。
abel2006 --- 2007-08-19 16:50:53
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陳果 --- 2007-08-28 17:46:28
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a57984 --- 2007-11-27 08:37:29
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defhua --- 2008-01-02 20:09:06
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sevenllong --- 2008-01-05 10:43:50
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超導(dǎo) --- 2008-01-06 15:41:58
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，UL標(biāo)準(zhǔn)，把絕緣等級分為１００％，１３３％，和１７５％．等級不同，耐壓級別不同，我這里有一標(biāo)準(zhǔn)，看后便知．Betty123 --- 2008-01-16 16:34:05
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100 Percent Level - Cables in this category may be applied where the system is provided withrelay protection such that ground faults will be cleared as rapidly aspossible, but in any case within 1 minute. While these cables are applicable tothe great majority of cable installations that are on grounded systems, theymay be used also on other systems for which the application of cable isacceptable provided the above clearing requirements are met in completelyde-energizing the faulting section.
Where additional insulation thickness is desired, it shall be the same asfor the 133 percent insulation level.
133 Percent Level - This insulation level corresponds to that formerly designated forungrounded systems. Cables in this category may be applied in situations wherethe clearing time requirements of the 100 percent level category cannot be met,and yet there is adequate assurance that the faulted section will bede-energized in a time not exceeding 1 hour. Also they may be used whenadditional insulation strength over the 100 percent level category isdesirable.
Betty123 --- 2008-01-16 16:56:55
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zygforce --- 2008-03-03 15:55:30
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有技術(shù)要求，和產(chǎn)品檢驗規(guī)范不就知道了嗎？
sevenllong --- 2008-03-08 08:14:43
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超導(dǎo) --- 2008-03-18 19:59:17
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stanly --- 2008-03-24 15:18:26
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龍散人 --- 2008-04-05 19:28:39
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國外的系統(tǒng)跟我們不一樣,電壓等級要求也不一樣,所以,他們是根據(jù)自己國家的電壓等級來要求絕緣厚度的,不用想那么多,不會是為了增加預(yù)度的,我們的國標(biāo)里,留得預(yù)度夠大的了.
鄭州的電纜 --- 2008-04-18 23:27:13
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hxjun --- 2008-05-10 16:56:18
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滄海一蛙 --- 2008-05-12 11:14:13
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我覺得還是系統(tǒng)耐壓的問題，可能電壓要高一些，相同的電壓下，國外的絕緣厚度都要薄一些
居 --- 2008-05-21 14:51:22
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我認為跟接地系統(tǒng)有關(guān)
如果是電阻接地或直接接地用100% 如果是消弧圈接地用133%厚度
個人意見
鄭州的電纜 --- 2008-06-10 13:56:01
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請見如下權(quán)威解釋：
the cable standards refer to 100%, 133% and 173% insulation levels. the 100% insulation level is suitable for systems which provide immediate isolation when an earth fault occurs. the time limit is 1 minute. for longer period of up to 1 hour, the 133% issulation level is suitable. if a phase is anticipated to remain earthed indefinitely, or presumably for more than 1 hour, the 173% level applies.
可見，133%的絕緣水平，為故障時間為1分至1小時。超過1小時，或時間不確定，當(dāng)采用173%的絕緣水平。
mmgg8800 --- 2008-06-14 16:45:54
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qinys --- 2008-06-19 11:49:38
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這個問題其實看是簡單：是國外標(biāo)準(zhǔn)要求的，不過中壓電纜的使用環(huán)境和高壓、低壓不同。至于絕緣皮厚要求133%這個數(shù)據(jù)是一個查考數(shù)值。這個是專家提出的數(shù)據(jù)我們暫時不能改，就用著好了，我個人意見
tw118 --- 2008-07-12 13:26:11
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奔狼2008 --- 2008-09-20 15:15:39
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ldyylp --- 2009-03-09 09:13:23
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美國標(biāo)準(zhǔn)對3類絕緣水平的規(guī)定：
100%絕緣水平：故障切除時間不超過1min，用于直接接地或經(jīng)小電阻接地系統(tǒng)中
133%絕緣水平：故障切除時間不超過1h，用于直消弧線圈或不接地系統(tǒng)中
173%絕緣水平：故障時間可以任意長，不作具體規(guī)定
根據(jù)美國標(biāo)準(zhǔn)和中國標(biāo)準(zhǔn)的規(guī)定，可以看出絕緣采用哪個絕緣水平是和系統(tǒng)的接地方式有關(guān)，發(fā)生故障時電纜本體承受的電壓有關(guān)系。
hdpe001 --- 2009-03-09 23:11:04
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我們有個菲律賓客戶專門訂這樣的線，但都是單芯的１０ＫＶ和３５ＫＶ
eastlooker --- 2011-01-12 16:19:59
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增加133%是按B類系統(tǒng)設(shè)計的，這種系統(tǒng)的變壓器中性點是經(jīng)過消弧線圈接地，具有一定的阻抗。在輸出端一相接地短路時，變壓器中性點向接地一相偏移，但偏移量不大。理論上偏移量介于A類系統(tǒng)（中性點直接接地）和C類系統(tǒng)（中性點不接地）之間，根據(jù)消弧線圈的阻抗情況，所以規(guī)定設(shè)計電壓為原額定電壓的1.33倍，也就是樓主所述的絕緣厚度要厚上133%。
frankerhu --- 2011-01-13 21:29:03
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,在標(biāo)準(zhǔn)沒有認同時，客戶的要求就是標(biāo)準(zhǔn)。生產(chǎn)客戶滿意的產(chǎn)品就可。onewindy --- 2013-06-11 21:49:19
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czb597706 --- 2013-07-22 16:29:09
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yvhkdv --- 2019-08-02 10:59:18
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lxg --- 2019-12-11 11:04:18
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772475238 --- 2020-04-19 11:03:22
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aliangh --- 2022-03-01 11:27:48
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刪除錯誤訊息
aliangh --- 2022-03-01 13:39:16
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修正樓上的
應(yīng)該要依據(jù)美國National Electrical Code的定義(NFPA 70我手上是2017版)
100 Percent Insulation Level.
Cables in this category shall be permitted to be applied where the system is
provided with relay protection such that
ground faults will be cleared
as rapidly as possible but, in any case, within 1 minute. While these cables
are applicable to the great majority of cable
installations that are on
grounded systems, they shall be permitted to be used also on other systems for
which the application of cables is acceptable,
provided the above clearing
requirements are met in completely de-energizing the faulted section.
2 133 Percent Insulation
Level. This insulation level corresponds to that formerly designated for
ungrounded systems. Cables in this category shall be
permitted to be applied in
situations where the clearing time requirements of the 100 percent level
category cannot be met and yet there is adequate
assurance that the faulted
section will be de-energized in a time not exceeding 1 hour. Also, they shall
be permitted to be used in 100 percent insulation
level applications where
additional insulation is desirable.
3 173 Percent Insulation
Level. Cables in this category shall be permitted to be applied under all of
the following conditions:
(1) In industrial
establishments where the conditions of maintenance and supervision ensure that
only qualified persons service the installation
(2) Where the fault clearing
time requirements of the 133 percent level category cannot be met
(3) Where an orderly shutdown
is essential to protect equipment and personnel
(4) There is adequate
assurance that the faulted section will be de-energized in an orderly shutdown
Also, cables with this
insulation thickness shall be permitted to be used in 100 or 133 percent
insulation level applications where additional insulation
strength is desirable.
13383733520 --- 2022-03-09 09:00:12
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ion1991 --- 2024-03-18 11:47:11
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http --- 2024-06-03 09:03:51
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wh514517 --- 2025-08-06 08:37:41
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99號:有誰能找些資料來看看？他們這個133%的厚度增加是怎么個來由？
YU761008 --- 2025-11-18 11:49:52
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