ETU25B是西門子3WL系列空氣斷路器中的電子脫扣器模塊?,主要用于配電保護、電動機保護及系統保護
ETU25B是西門子3WL系列空氣斷路器中的電子脫扣器模塊?,主要用于配電保護、電動機保護及系統保護
ETU25B是西門子3WL系列空氣斷路器中的電子脫扣器模塊?,主要用于配電保護、電動機保護及系統保護
ETU25B是西門子3WL系列空氣斷路器中的電子脫扣器模塊?,主要用于配電保護、電動機保護及系統保護
ETU25B是西門子3WL系列空氣斷路器中的電子脫扣器模塊?,主要用于配電保護、電動機保護及系統保護。以下是其核心參數和功能詳情:
?一、核心參數?
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?額定電流范圍?
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支持從100A到6300A的額定電流調整,通過更換?額定電流模塊?(集成在過電流脫扣器中)實現快速適配,無需更換電流互感器。
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?保護功能?
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?基本保護?:
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過載保護(L):支持I2t和14t特性曲線切換,預設延時tR=10秒(6×IR時)。
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短時延時短路保護(S):可調范圍1.25~12×In。
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瞬時短路保護(I):預設值20×In,最大值50kA。
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?附加功能?:
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中性導線保護(N):可接通/斷開,支持可調參數。
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接地故障保護(G):可選配模塊實現。
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負載監視、熱象保護(可接通/斷開)。
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?通訊能力?
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支持?PROFIBUS DP?、?MODBUS?、?以太網?通訊協議,可實時傳輸電流值、開關狀態、脫扣原因等數據至中心計算機。
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配備?LCD字母和數字圖形顯示屏?,支持本地參數化與顯示。
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?參數化與顯示?
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通過?旋轉編碼開關?(10檔)、?通訊接口?或?電子脫扣器用戶接口?進行絕對值參數化。
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擴展保護功能參數化,支持測量功能增強(如Plus測量功能)。
?二、功能特點?
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?模塊化設計?
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構成部件(如輔助脫扣器、電動操作機構、過電流脫扣器等)可靈活配置,滿足不同場景需求。
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主觸頭可更換,延長斷路器壽命。
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?時限功能?
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適用于傳統建筑、電動機及系統保護,支持短延時和瞬時短路保護時限調整。
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?快速參數切換?
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包含兩個獨立的脫扣特性曲線(參數集),可在200ms內根據外部信號完成切換,適應電源條件快速變化(如變壓器切換至發電機運行)。
?三、應用場景?
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?配電保護?:用于配電盤、電柜一般供電,支持抽出式和固定式安裝。
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?電動機保護?:保護電動機免受過載、短路等故障影響。
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?系統保護?:與急停設備組合使用,作為急停開關,符合DIN VDE 0113、IEC 60204-1標準。
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?工業自動化?:通過通訊功能實現遠程監控、診斷、測試及能源管理。
?四、兼容性與認證?
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?兼容性?:適用于西門子3WL系列框架斷路器(如3WL1340、3WL3H4000等)。
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?認證標準?:符合IEC 60947-2、UL 489、IEC 60068-2-30等國際標準,確保安全性和可靠性。
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ETU25B is an electronic release module in Siemens 3WL series air circuit breakers, mainly used for distribution protection, motor protection, and system protection. The following are its core parameters and functional details:
1、 Core parameters
Rated current range
Support rated current adjustment from 100A to 6300A, achieve quick adaptation by replacing the rated current module (integrated in the overcurrent release), without the need to replace the current transformer.
Protection function
Basic protection:
Overload protection (L): Supports switching between I 2 t and 14t characteristic curves, with a preset delay of tR=10 seconds (at 6 × IR).
Short time delay short circuit protection (S): adjustable range 1.25~12 × In.
Instantaneous short circuit protection (I): preset value of 20 × In, maximum value of 50kA.
Additional features:
Neutral conductor protection (N): Can be connected/disconnected, supports adjustable parameters.
Ground fault protection (G): optional module implementation.
Load monitoring, thermal image protection (switchable).
Communication ability
Supports PROFIBUS DP, MODBUS, Ethernet communication protocols, and can transmit real-time data such as current values, switch status, and tripping reasons to the central computer.
Equipped with LCD letter and number graphic display screen, supporting local parameterization and display.
Parameterization and Display
Absolute value parameterization can be achieved by rotating the encoding switch (10 gears), communication interface, or electronic release user interface.
Extended protection function parameterization, supporting measurement function enhancement (such as Plus measurement function).
2、 Functional Features
Modular design
The components (such as auxiliary release, electric operating mechanism, overcurrent release, etc.) can be flexibly configured to meet the needs of different scenarios.
The main contact can be replaced, extending the life of the circuit breaker.
Time limit function
Suitable for traditional building, motor and system protection, supporting short delay and instantaneous short circuit protection time limit adjustment.
Quick parameter switching
Contains two independent trip characteristic curves (parameter sets) that can be switched within 200ms based on external signals, adapting to rapid changes in power conditions (such as transformer switching to generator operation).
3、 Application scenarios
Distribution protection: used for general power supply of distribution panels and cabinets, supporting pull-out and fixed installation.
Motor protection: protects the motor from overload, short circuit and other faults.
System protection: Used in combination with emergency stop equipment as an emergency stop switch, in compliance with DIN VDE 0113 and IEC 60204-1 standards.
Industrial automation: remote monitoring, diagnosis, testing, and energy management are achieved through communication functions.
4、 Compatibility and Certification
Compatibility: Suitable for Siemens 3WL series frame circuit breakers (such as 3WL1340, 3WL3H4000, etc.).
Certification standards: Complies with international standards such as IEC 60947-2, UL 489, IEC 60068-2-30, ensuring safety and reliability.