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                DFW-24KV/12KV戶外高壓電纜分接箱
                    發布時間: 2021-09-02 10:37    

                DFW-24KV/12KV戶外高壓電纜分接箱

                產品簡介

                Beief introduction to the products

                隨著社會的不斷發展進步,我國城市電網發生了巨大的變化,大多數城市已經形成或正在形成眾多的用電負荷密集區。過去那種從變電站10KV線路(或分支線路)到直接用戶的供電方式已經難以滿足城市發展的要求。因而產生了一種新的供電方式————通過開閉所向用戶供電。但是隨著城市密集化程度的加劇,原有的一些土建型開閉所已受到土地和城市規劃的限制。因此出現了一種更加先進、實用的配電設備      戶外小型智能化開閉所(戶外環網柜)。此開閉所無需土建而且占地面積小,配置非常靈活。供電方式更加可靠,建設安裝、調試時間大為縮短,總體造價降低。

                隨著現代工業的發展,對電氣設備控制自動化和智能化程度越來越高,利用現代電子技術、傳感器技術、通訊技術、計算機及網絡技術,將電力設備在正常及事故情況下的監測、保護、控制、計量等集成化,達到良好的管理,已成為一種必然趨勢和發展方向。

                智能化小型開閉所(戶外環網柜)是采用借鑒歐洲的開閉所方案,將20KV或10KV開關柜、斷路器、負荷開關、電流CT、電壓互感器PT、開閉所FTU、RTU、通信控制終端(CCU、20KV計量及自動抄表、UPS電源及指示儀表等安裝調試好裝入一個可移動、密封、防潮的不銹鋼箱體內。從而實現了城市配電網中一、二次系統的集成化、裝配的模塊化??s短了建設周期,大大地提高了城市電網運行的可靠性。戶外環網柜分歐式和美式。


                With the continuous development and progress of the society, China's urban power grid has changed dramatically.  Most cities have formed or have been forming a large number of power load concentrated areas. The power supply mode of delivering directly to the users by 10KV line (or branch line) from the substation has been difficult to meet the requirements of urban development, which has resulted in a new type of power supply mode – supply the power to the users through the switching substation. However, with the degree of urban density increasing, some original civil engineering switching substations have been limited by the land and the urban planning; therefore a more advanced and practical power distribution equipment - small-scale outdoor intelligent switching substation (outdoor ring net cabinet) has appeared. This switching substation does not require civil construction with small occupied area and extremely flexible configuration. The power supply mode is more reliable. The time for construction and debugging is greatly reduced and the overall cost is reduced.


                With the development of modern industry, the degree of control automation and intelligence of the electrical equipment are increasingly improved. Making use of the technology in the aspects of modern electronic, sensor, communications, computer and network to integrate the monitoring, protection, control or measurement under normal condition or in case of accidents by the electrical equipment for better management has become an inevitable trend and direction of development.


                The intelligent small switching substation (outdoor ring net cabinet) adopts and bases on the European substation programs to install the 20KV or 10KV switch cabinet, circuit breakers, load switches, current CT, voltage transformer PT, substation FTU, RTU and communication control terminal (CCU), 20KV metering and automatic meter reading, UPS power supply and the indicating instrument, etc. in a movable, sealed damp-proof and stainless steel tank to realize the integration of the primary and secondary system in the urban power distribution grid and the modularization of the assembly, shorten the construction period and greatly improve the reliability of the operation of the urban power grid operation. Outdoor ring net cabinet is divided into European type and American type.


                型號及含義

                Types and Meanings


                技術參數

                Technical Parameters

                序 號
                Serial Number

                項 目 Items

                單 位 Unit

                參 數 Parameter

                1

                額定電壓
                Rated Voltage

                KV

                24

                12

                2

                額定頻率
                Rated Frequency

                Hz

                50 / 60

                50 / 60

                3

                額定絕緣水平
                Rated Insulation Level

                1min工頻耐受電壓(有效值)
                Working Frequency Withstand Voltage per Minute (effective value)

                KV

                相 間
                Separate
                相對地
                Relatively

                65

                42

                雷電沖擊耐受電壓(峰值)
                Lightning Impact Withstand Voltage (peak)

                125

                75

                輔助控制回路工頻耐受電壓
                Working Frequency Withstand Voltage of Auxiliary Control Circuit

                V

                2000

                2000

                4

                額定電流
                Rated Current

                A

                400、630

                400、630

                5

                額定閉環開斷電流
                Rated Closed-loop Breaking Current

                A

                400、630

                400、630

                6

                空載變壓器開斷電流
                No-load Transformer Breaking Current

                A

                16

                16

                7

                電纜充電開斷電流
                Cable Charging Breaking Current

                A

                25

                25

                8

                短時耐受電流(負荷開關及主接地開關)1 sec
                Short-term Withstand Current (load switch and the main earthing switch) 1 sec

                KA

                25

                25

                9

                關合電流(負荷開關及主接地開關)
                Closing Current (load switch and the main earthing switch)

                KA

                63

                63

                10

                短時耐受電流(熔斷器下端接地開關)1 sec
                Short-term Withstand Current (load switch lower end grounding switch)

                KA

                2

                2

                11

                關合電流(熔斷器下端接地開關)
                Closing Current (the earthing switch at the lower end of the fuse)

                KA

                5

                5

                12

                內部故障燃?。↖EC298) 1sec
                Internal Fault Arcing (IEC298) 1sec

                KA

                16

                16

                13

                轉移電流
                Current Transfers

                A

                1500

                1750

                14

                重量
                Weight

                Kg

                840~1440

                840~1440


                使用條件

                Conditions of Use

                使用場所:戶外;

                適應環境溫度:-35℃ ~ +55℃;

                ※最高日平均氣溫+40℃,最高年平均氣溫+35℃;

                風速:不大于35米/秒;

                空氣相對濕度:≤90%(+25℃);

                ※地面傾斜度≤5°;

                地震耐受能力:地震烈度不超過8度;

                ※安裝地點無火災、爆炸危險、化學性腐蝕及劇烈振動。


                Application sites: Outdoor;

                Appropriate Ambient Temperature: -35℃~ +55℃;

                Daily highest average temperature is +40℃, and the annual highest average temperature is +35℃;

                Wind Speed: ≤ 35 m/s;

                Relative Air Humidity: ≤90%( +25℃ );

                Gradient of the Ground ≤5°;

                Seismic capacity: Seismic Intensity ≤ VIII;

                The installation sites shall free from fire, explosion hazard, chemical corrosion and violent vibration.

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