YJVYJV22高壓電力電纜
6kV~35kV中低壓銅芯及鋁芯交聯聚乙烯絕緣電力電纜(YJV電纜,YJV22電纜,YJLV電纜,YJLV22電纜)
XLPEInsulatedPowerCable
交聯聚乙烯絕緣電力電纜是采用化學方法或物理方法,使聚乙烯分子由線型分子結構轉變為三維網狀結構,由熱塑性的聚乙烯變成熱固性的交聯聚乙烯,從而提高了聚乙烯的耐老化性能、機械性能和耐環境能力,并保持了優良的電氣性能。
交聯聚乙烯絕緣電力電纜導體的允許長期zui高溫為90攝氏度,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、結構簡單、使用方便、耐化學腐蝕和敷設不受落差限制等優點。
26/35KV電力電纜,18/30KV交聯電纜,12/20KVYJV電纜,8.7/15KVYJV22電纜線,6/10KV鋁芯交聯電纜線,3.6/6KVYJLV單芯電纜
中低壓交聯電纜產品標準Standard
YJVYJV22高壓電力電纜本產品按GB12706《額定電壓35V及以下銅芯、鋁芯塑料絕緣電力電纜》標準生產,同時還可根據用戶需要按電工委員會推薦標準IEC、英國標準、德國標準及美國標準生產。
Theproductismanufacturedaccordingtothestandardof《GB12706orIEC、BS、DINandICEAuponrequest.
適用范圍Applications
本產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。
Theproductissuitableforuseinpowertransmissionanddistributionlineswithratedpowerfrequencyvoltage3.6/6kv~26/35kv.
使用特性Operatingcharacteristics
·工頻額定電壓U0/U為3.6/6kv~26/35kv。
Ratedpower-frepuencyvoltageU0/U:3.6/6kv~26/35kv.
·電纜導體的zui高允許工作溫度:90℃。
Max.admissibleoperatingtemperatureoftheconductor:90℃.
·短路時(zui長時間不超過5s)電纜導體的zui高溫度不超過2500C。
Max.short-circurttemperatureofconductorshallnotexceed2500C.
(5smaximumduration)
·電纜敷設時環境溫度應不低于00C。
Theambienttemperatureunderinstallationshouldnotbelow00C.
·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。
Thebendingradiusofasingle-corecableshouldnotlessthan20timesofthecablediameter.
Thebendingradiusofasingle-corecableshouldnotlessthan15timesofthecablediameter.
電纜額定電壓的選擇Voltagedesignation
·電纜的額定電壓應適合于電纜系統的運行狀況,用U0/U(Um)kv表示。
U0-電纜設計用的導體對地或金屬屏蔽之間的額定工頻電壓;
U-電纜設計用的導體間的額定工頻電壓;
Um-設備可承受的“zui高系統電壓”的zui大值。
Theratedvoltageofthecableforagivenapplixationshallbesuitablefortheoperatingconditions
inthesysteminwhichthecableisused,andisexpressedintheformofU0/U(Um)kv
Where:
U0-Theratedpower-frequencyvoltagebetweenconductorsandearthmetallicscreen,forwhichthecabledesigned;
U-Theratedpower-frequencyvoltagebetweenconductos,forwhichthecabledesigned;
Um-Themaximumvalueofthe“highestsystemvoltage”forwhichtheequipmentmaybeused.
·三相系統用電纜的U0值推薦如下表:
ThevaluesofU0recommenedforcabletobeusedinthree-phasesystemsarelistedbelow:
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A類系統──該類系統任何一相導體與地和接地導體接觸時,能在1min內與系統分離 B類系統──該類系統僅包括單相接地故障短時運行的條件,接地故障時間應不超過1h, 但在任何情況下,zui長不超過8h每年接地故障總持續時間不超過125h; C類系統──不屬于A類、B類的系統。 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 A and B 電纜的型號Type of cable | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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生產范圍Production range of cable | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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