適用范圍 Applicable scope

       TVRD-380V系列三相交流保護(hù)繼電器（又稱三相電源監(jiān)視器、相序保護(hù)器、過(guò)欠壓保護(hù)器等）主要用于交流50/60Hz，額定電壓460V以下，工業(yè)三相220V、380V、440V、460V等電壓級(jí)別的各種故障檢測(cè)，對(duì)三相輸入電源的電壓過(guò)高、電壓過(guò)低、缺相、逆相(相序)、三相電壓不平衡等提供繼電保護(hù)，產(chǎn)品廣泛應(yīng)用于空壓機(jī)、電動(dòng)機(jī)、配電箱、水泵、油泵、空調(diào)機(jī)組、電控箱、配電柜、起重機(jī)等，如空調(diào)壓縮機(jī)保護(hù)，各種電梯的電源監(jiān)視，水泵、油泵防缺相、逆相保護(hù)等，是工業(yè)設(shè)備運(yùn)行中維護(hù)設(shè)備工作電壓正常的的保護(hù)產(chǎn)品。

       本產(chǎn)品符合GB14085.5－2001 eqv IEC60947－1：1999標(biāo)準(zhǔn)。

      TVRD-380V series three-phase ac protection relay (also known as three-phase power monitor, phase sequence protector, overvoltage protector, etc.)It is used to communicate 50/60hz, rated voltage 460V, industrial three-phase 220V, 380V, 440V, 460V, etc.Fault detection, the three - phase input power supply voltage too high, too low voltage, phase - phase, reverse phase (phase sequence), three-phase voltage imbalance, and so on provide relay.Protection, products are widely used in air compressor, motor, distribution box, water pump, oil pump, central air conditioning unit, electric control box, power distribution cabinet, starting.Heavy machinery, such as the central air conditioning compressor protection, various elevator power monitoring, water pump, oil pump anti - phase, inverse phase protection, is industrial.Maintain 

the normal working voltage of the equipment and protect the products.

       This product conforms to gb14085.5-2001 eqv iec60947-1:99 standard.

結(jié)構(gòu)特點(diǎn) Structural characteristics of

1）安裝方式：該保護(hù)器底座采用導(dǎo)軌式，內(nèi)設(shè)兩個(gè)M4螺孔結(jié)構(gòu)，直接獨(dú)立安裝或HT35導(dǎo)軌安裝。

2）指示燈：以5個(gè)指示燈分別來(lái)指示：正常，缺相（電壓三相不平衡），逆相，過(guò)壓，欠壓。

3）外型尺寸： 68mm×35mm×76mm。

1) installation method: this protector base adopts the guide type, and two M4 screw holes are installed, and the installation of direct independent installation or HT35 guide rail is installed.

2) indicator light: it is indicated by five indicators: normal, missing phase (voltage three-phase imbalance), inverse phase, overvoltage, undervoltage.

3) external dimension: 68mm x 35mm x 76mm.

保護(hù)特性 Protective properties

1）缺相保護(hù)：指被保護(hù)線路在運(yùn)行狀態(tài)或非運(yùn)行狀態(tài)時(shí)，任意一相發(fā)生斷相故障，延時(shí)2S動(dòng)作。

2）逆相保護(hù)：防止L1、L2、L3三相交流相序接錯(cuò)的一種保護(hù)措施，延時(shí)2S動(dòng)作。

3）電壓不平衡保護(hù)：指三相電壓不平衡將會(huì)影響線路安全運(yùn)行的一種保護(hù)措施，三相不平衡率＝×99%>10%時(shí)，保護(hù)延時(shí)2S動(dòng)作。

4）過(guò)壓保護(hù)：指被保護(hù)線路電壓高于設(shè)定值，延時(shí)3~8S動(dòng)作，恢復(fù)回差為6~20VAC。

5）欠壓保護(hù)：指被保護(hù)線路電壓低于設(shè)定值，延時(shí)3~8S動(dòng)作，恢復(fù)回差為3~20VAC。

1) lack of phase protection: when the protected line is in operation or non-operating state, any phase fault occurs and the delay 2S action.

2) reverse phase protection: a protective measure that prevents the communication phase sequence of L1, L2 and L3 phases, and the delay 2S action.

3) voltage imbalance protection: the three-phase voltage imbalance will affect the safe operation of the line, and the three-phase unbalanced rate = x.When 99% BBB 0 10%, the protection delay 2S action.

4) overvoltage protection: the voltage of the protected line is higher than the set value, the delay is 3~8S, and the return difference is 6~20VAC.5) under-voltage protection: the voltage of the protected line is lower than the set value, the time delay is 3~8S, and the return difference is 3~20VAC.