适用范围 Applicable scope

       LH-380系列电压相序多功能保护器（又称三相电源监视器、相序保护器、过欠压保护器等）主要用于交流50/60Hz，额定电压460V以下，工业三相220V、380V、440V、460V等电压级别的各种故障检测，对三相输入电源的电配压过高、电压过低、缺相、逆相(相序)、三相电压不平衡等提供继电保护，产品广泛应用于空压机、配电柜、起重机等，如中央空调压缩机保护，各种电梯的电源监视，水泵、油泵防缺相、逆相保护等，是工业设备运行中维护设备工作电压正常的不可缺少的保护产品。本产品符合GB14048.5－2001 EQV IEC60947－1：1999标准。

       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.

型号命名 Model naming

产品特点 Product features

◆安装方式：该保护器底座采用导轨式，并设两个M4螺孔结构，直接独立安装或HT35导轨安装（如    采用直接安装，需将产品底部两侧附件用力推出）。

◆指示灯：以5个指示灯分别来指示：正常，缺相（电压 三相不平衡），逆相，过压，欠压。

◆外型尺寸：79mm×23mm×79mm

◆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

◆缺相保护  ◆逆相保护  ◆过压保护  ◆欠压保护  ◆三相电压不平衡保护  ◆触点形式：两开两闭

注： 

1.缺相和逆相保护约2S动作

2.过压和欠压保护约8S动作

3.由于本保护器只针对电压及其相序进行保护，所以可适用于各种功率的电机。

4. 如不需要上述某项保护功能，请在定货时说明

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

Note: 

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.

主要技术参数 The main technical parameters

外形及安装尺寸 Appearance and mounting dimensions

接线图 Wiring diagram

电压范围选型表 Voltage range selection table