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      —— 朗菲電氣·您的首選! ——

      相序保護器系列 時間繼電器 溫度控制器 電動機保護器 交流接觸器系列 熱過載繼電器系列 整流器系列 高低壓電氣元器件


      適用范圍 Applicable scope

             LH-380系列電壓相序多功能保護器(又稱三相電源監視器、相序保護器、過欠壓保護器等)主要用于交流50/60Hz,額定電壓460V以下,工業三相220V、380V、440V、460V等電壓級別的各種故障檢測,對三相輸入電源的電配壓過高、電壓過低、缺相、逆相(相序)、三相電壓不平衡等提供繼電保護,產品廣泛應用于空壓機、配電柜、起重機等,如中央空調壓縮機保護,各種電梯的電源監視,水泵、油泵防缺相、逆相保護等,是工業設備運行中維護設備工作電壓正常的不可缺少的保護產品。本產品符合GB14048.5-2001 EQV IEC60947-1:1999標準。

             LH-380 series voltage phase sequence multifunction protectors (also known as three-phase power monitor, phase sequence protector, undervoltage protector, etc.).To communicate 50/60hz, rated voltage 460V, industrial three-phase 220V, 380V, 440V, 460V and other voltage levels.All kinds of fault detection of three-phase input power supply voltage is too high, too low voltage, missing phase, inverse phase (phase sequence), three-phase voltage imbalance and so on.For relay protection, the products are widely used in air compressor, power distribution cabinet, crane, etc., such as the central air conditioning compressor protection, various kinds 

      of elevator electricity.Source monitoring, water pump, oil pump anti - phase, inverse phase protection and so on, is an industrial equipment operation maintenance equipment working voltage normal indispensable.Protect the product. This product conforms to GB14048.5-2001 EQV IEC60947- 1:19 99 standard.

      型號命名 Model naming


      產品特點 Product features

      ◆安裝方式:該保護器底座采用導軌式,并設兩個M4螺孔結構,直接獨立安裝或HT35導軌安裝(如    采用直接安裝,需將產品底部兩側附件用力推出)。

      ◆指示燈:以5個指示燈分別來指示:正常,缺相(電壓 三相不平衡),逆相,過壓,欠壓。


      ◆Installation method: this protector base adopts the guide type, and two M4 screw holes are installed, which can be installed directly independently or in HT35 guide rail (for example).With direct installation, the bottom side of the product should be pushed out.

      ◆Indicator light: the indicators are indicated by five indicators: normal, missing phase (voltage three-phase imbalance), inverse phase, overpressure, and undervoltage.

      ◆External dimensions: 79mm*23mm*79mm.

      功能特性 Features

      ◆缺相保護  ◆逆相保護  ◆過壓保護  ◆欠壓保護  ◆三相電壓不平衡保護  ◆觸點形式:兩開兩閉





      4. 如不需要上述某項保護功能,請在定貨時說明

      ◆The protection of ◆the overvoltage protection of ◆the three phase voltage unbalance protection of ◆the contact point: two open and two closed.


      1. Missing phase and inverse phase protect about 2S.

      2. Protect about 8S by overvoltage and undervoltage.

      3. Since this protector is only protected against voltage and its phase sequence, it can be applied to all kinds of power machines.

      4. If you do not need any of the above protection functions, please specify in the order.

      主要技術參數 The main technical parameters


      外形及安裝尺寸 Appearance and mounting dimensions


      接線圖 Wiring diagram


      電壓范圍選型表 Voltage range selection table


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