交聯(lián)聚乙烯絕緣電力電纜是采用化學(xué)方法或物理方法,使聚乙烯分子由線型分子結(jié)構(gòu)轉(zhuǎn)變?yōu)槿S網(wǎng)狀結(jié)構(gòu),由熱塑性的聚乙烯變成熱固性的交聯(lián)聚乙烯,從而提高了聚乙烯的耐老化性能、機(jī)械性能和耐環(huán)境能力,并保持了優(yōu)良的電氣性能。 交聯(lián)聚乙烯絕緣電力電纜導(dǎo)體的允許溫為900C,較低絕緣電纜、聚氯乙烯絕緣電纜和聚乙烯絕緣電纜高,且具有重量輕、結(jié)構(gòu)簡(jiǎn)單、使用方便、耐化學(xué)腐蝕和敷設(shè)不受落差限制等優(yōu)點(diǎn)。 近年來(lái),公司先后按IEC標(biāo)準(zhǔn)為全國(guó)城網(wǎng)改造、首都國(guó)際機(jī)場(chǎng)、北京西客站、中央電視臺(tái)、安順電廠、泰山核電站、二灘水電站、北侖電廠、伊敏電廠、揚(yáng)州二電廠、上海地鐵、寶鋼集團(tuán)、揚(yáng)子石化等重點(diǎn)工程提供該系列產(chǎn)品,質(zhì)量?jī)?yōu)良,獲得用戶一致好評(píng)。 CROSS-LINKED POLYETHYLENE(XLPE)INSULATED POWER CABLE For XLPE insulated power cable, either chemical method or physical method is method is employed to transform the molecular structure of PE from chain into three-dimensional network, i. e. thermo-plastic PE is transformed into thermosetting XLPE. After cross-linking, the thermalmechanical properties of PE have been greatly improved while its excellent electrical property are still retained. The maximum permissible operating temperature of the conductor of a XLPE insulated power cable is 900C which is higher than that of paper, PVC or PE insulated power cable. The cable has the advantage of simplicity in construction, lightness in weight, convenience in application besides its excellent electrical, thermal, mechanicalanti-chemical corrosion properties. It can also be laid with no limitation of level difference along the route. According to the standards of IEC, in the last few years, We have supplied XLPE cables to the Chinese urbon power network reconstruction project, Beijing Capital International Airport, Beijing West Railway Station, CCTV Station, Anshun Power Plant, Qinshan Nuclear Power Station, Ertan Hydroelectric Power Station , Beilun Power Plant, Yimin Power Plant, Yangzhou Second Power Plant, Shanghai Subway, Bao Steel GroupYangzi Petrochemical Company, etc.. The products were given highly evaluation from customers. 產(chǎn)品標(biāo)準(zhǔn)Standard 本產(chǎn)品按GB12706《額定電壓35V及以下銅芯、濾芯塑料絕緣電纜》標(biāo)準(zhǔn)生產(chǎn),同時(shí)還可根據(jù)用戶需要按國(guó)際電工委員會(huì)推薦標(biāo)準(zhǔn)IEC、英國(guó)標(biāo)準(zhǔn)、德國(guó)標(biāo)準(zhǔn)及美國(guó)標(biāo)準(zhǔn)生產(chǎn)。 The product is manufactured according to the standard of《GB12706 or IEC、BS、DINICEA upon request. 適用范圍Applications 本產(chǎn)品適用于工頻額定電壓3.6/6kv~26/35kv輸配電線路作配送電能子用。 The product is suitable for use in power transmissiondistribution lines with rated power frequency voltage 3.6/6kv~26/35kv. 使用特性O(shè)perating characteristics · 工頻額定電壓U0/U為3.6/6kv~26/35kv。 Rated power-frepuency voltage U0/U: 3.6/6kv~26/35kv. · 電纜導(dǎo)體的允許工作溫度:90℃。 Max.admissible operating temperature of the conductor:90℃. · 短路時(shí)(最長(zhǎng)時(shí)間不超過(guò)5s)電纜導(dǎo)體的溫度不超過(guò)2500C。 Max. short-circurt temperature of conductor shall not exceed 2500C. (5s maximum duration) · 電纜敷設(shè)時(shí)環(huán)境溫度應(yīng)不低于00C。 The ambient temperature under installation should not below 00C. · 電纜彎曲半徑:三芯電纜不小于電纜外徑15倍;單芯電纜不小于電纜外徑20倍。 The bending radius of a single-core cable should not less than 20 times of the cable diameter. The bending radius of a single-core cable should not less than 15 times of the cable diameter. 電纜額定電壓的選擇 Voltage designation · 電纜的額定電壓應(yīng)適合于電纜系統(tǒng)的運(yùn)行狀況,用U0/U(Um)kv表示。 U0-電纜設(shè)計(jì)用的導(dǎo)體對(duì)地或金屬屏蔽之間的額定工頻電壓; U-電纜設(shè)計(jì)用的導(dǎo)體間的額定工頻電壓; Um-設(shè)備可承受的“系統(tǒng)電壓”的最大值。 The rated voltage of the cable for a given applixation shall be suitable for the operating conditions in the system in which the cable is used,and is expressed in the form of U0/U(Um)kv Where: U0-The rated power-frequency voltage between conductorsearth metallic screen ,for which the cable designed; U - The rated power-frequency voltage between conductos, for which the cable designed; Um- The maximum value of the“highest system voltage”for which the equipment may beused. · 三相系統(tǒng)用電纜的U0值推薦如下表: The values of U0 recommened for cable to be used in three-phase systems are listed below:
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A類系統(tǒng)──該類系統(tǒng)任何一相導(dǎo)體與地和接地導(dǎo)體接觸時(shí),能在1min內(nèi)與系統(tǒng)分離 B類系統(tǒng)──該類系統(tǒng)僅包括單相接地故障短時(shí)運(yùn)行的條件,接地故障時(shí)間應(yīng)不超過(guò)1h, 但在任何情況下,最長(zhǎng)不超過(guò)8h每年接地故障總持續(xù)時(shí)間不超過(guò)125h; C類系統(tǒng)──不屬于A類、B類的系統(tǒng)。 System category A──This category comprises those systems in which any phase conductor that comes in contact with earth or an earth conductor. is disconnected from the system within 1 min. System category B ──This category comprises those system which,under faultconditions,are operated,are operated for ashorttimewith one phase earthed.This period should not exceed 1 h..Fora longer period, not exceeding 8h on any occasion, can be tolerated.The total duration of earth faults in any year should not exceed 125h. System categeory C──This category comprises all systems which do not fall into AB 電纜的型號(hào)Type of cable | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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生產(chǎn)范圍Production range of cable | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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R500型多功能數(shù)字核輻射儀。采用美國(guó)標(biāo)準(zhǔn)局制造的2英寸大型扁平螺旋式傳感器,靈敏度高,可快速檢測(cè)α、β、γ和Χ射線的強(qiáng)度。帶有校正因子功能,客戶可以自行調(diào)整校正參數(shù);提供了平均時(shí)間設(shè)定功能,大幅度提高反映靈敏度。R500數(shù)字核輻射儀符合人體工程學(xué),抗飽和電路可避免電磁波的干擾,具有安全校準(zhǔn)功能,可避免校準(zhǔn)人員的輻射接觸。產(chǎn)品有歐洲CE認(rèn)證標(biāo)準(zhǔn),ISO9001質(zhì)量認(rèn)證。
應(yīng)用
R500型多功能數(shù)字核輻射儀,可廣泛用在餐廳,酒店,家庭,公共場(chǎng)所,實(shí)驗(yàn)室,采石場(chǎng),金屬處理廠,油田和供油管道裝備,環(huán)境保護(hù),警察局等部門,用于:
檢查食物污染
檢查周圍環(huán)境污染
檢查地下鉆管和設(shè)備的放射性
檢查石材等建筑材料的放射性
檢查瓷器餐具玻璃杯等的放射性
檢查局部的輻射泄露和核輻射污染
檢查有核輻射危險(xiǎn)的填埋地和垃圾場(chǎng)
檢查個(gè)人的貴重財(cái)產(chǎn)和珠寶的有害輻射
檢測(cè)從醫(yī)用到工業(yè)的X射線儀的X射線強(qiáng)度
產(chǎn)品特點(diǎn)
打開滑蓋,可以檢測(cè)α、β、γ和Χ射線
合上滑蓋,傳感器得到雙重保護(hù),可以檢測(cè)γ和Χ射線
技術(shù)參數(shù)
測(cè)量射線種類 | α、β、γ和Χ射線 |
測(cè)量量程 | 輻射劑量率:0.01µSv/h-1000µSv/h,0.001mR/hr-100mR/hr 脈沖劑量率:0-300,000cpm,0-5,000cps 輻射劑量累計(jì)值:0.001µSv-999Sv |
靈敏度 | 3500CPM/mR/hr(對(duì)于Cs-137); |
傳感器 | 大型GM管,有效直徑45mm,云母窗密度1.5-2.0mg/cm2 |
輸出端口 | USB電腦連接口(專用USB線延長(zhǎng)線可選,可延長(zhǎng)到100米) |
平均時(shí)間 | 默認(rèn)32秒,可在2秒和120秒之間手動(dòng)或自動(dòng)可調(diào) |
顯示 | 大屏幕數(shù)字LCD,帶棒圖顯示 |
效率 | Sr-90(546KeV,2.3MeVβmax)約75%;C-14(156KeVβmax)約11%;Bi-210(1.2MeVβmax)約64%;Am-241(5.5MeVα)約36% |
抗飽和 | 在超過(guò)最大讀數(shù)達(dá)100倍的場(chǎng)合,讀數(shù)保持在滿刻度。 |
校正 | 可直接調(diào)整校正因子 |
報(bào)警功能 | 可自由設(shè)定報(bào)警值,缺省設(shè)置為5μSv/hr |
精度 | ±15% |
存儲(chǔ)功能 | 可存儲(chǔ)2千個(gè)數(shù)據(jù),手動(dòng)或自動(dòng)存儲(chǔ) |
軟件 | 可讓數(shù)值實(shí)時(shí)遠(yuǎn)傳到電腦中,進(jìn)行顯示、分析、記錄 |
探測(cè)器工作溫度 | -40℃到75℃ |
重量 | 450克 |
尺寸 | L300毫米,W90毫米,H40毫米 |
電源 | 3節(jié)AA電池,可連續(xù)工作30天 |
質(zhì)量認(rèn)證 | EuropeanCE,USFCC15 |
質(zhì)量保證期 | 主機(jī)一年 |
深圳大豪電子供應(yīng) 日立鉆孔機(jī)保險(xiǎn)絲7.5A,日立主軸保險(xiǎn)絲 日立數(shù)控機(jī)床保險(xiǎn)絲
szdahao@126.com
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環(huán)宇5微米不銹鋼網(wǎng)燒結(jié)濾芯經(jīng)真空燒結(jié)而成的具有較高強(qiáng)度及整體鋼性的一種新型過(guò)濾材料,其各層絲網(wǎng)的網(wǎng)孔相互交錯(cuò),形成一種均一而理想的過(guò)濾構(gòu)造。不但可作為籃式過(guò)濾器、網(wǎng)式過(guò)濾器等過(guò)濾設(shè)備的的過(guò)濾介質(zhì),而且由于不銹鋼燒結(jié)濾芯具有過(guò)濾精度高、耐高溫、耐腐蝕、機(jī)械強(qiáng)度高以及易加工、壽命長(zhǎng)等許多優(yōu)異性能,所以越來(lái)越多地應(yīng)用到石油石化工業(yè)中產(chǎn)品和工藝介質(zhì)的分離領(lǐng)域中。
鉆銑床參數(shù) | ZX50C/ZX50F |
鉆孔最大直徑(mm) | 50 |
端銑最大寬度(mm) | 100 |
立銑最大直徑(mm) | 25 |
鏜孔最大直徑(mm) | 120 |
最大攻絲直徑(mm) | M16 |
最大平磨砂輪直徑(mm) | - |
主軸端面至工作臺(tái)距離(mm) | 38-430 |
主軸轉(zhuǎn)速范圍(r.p.m) | 230-1825 |
主軸行程(mm) | 120 |
工作臺(tái)尺寸(mm) | 900×240 |
工作臺(tái)行程(mm) | 500×230 |
外型尺寸(mm) | 1200×970×1650 |
電動(dòng)機(jī)功率(kw) | 1.5/2.2 |
機(jī)床重量(kg) | 500/600 |
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型號(hào)規(guī)格:
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