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What is phase breaking? A phase or polyphase disconnect in a metering circuit, but not all phases lose voltage. What is phase failure protection? A protective device that relies on the disappearance of an electric current in a phase conductor of a multiphase circuit, or a phase or several phase voltage loss of a multiphase system to prevent the power supply from being applied to a protected device. What is a circuit break? When the circuit does not have a closed switch, or the wires are not connected properly, or if the appliance is burned out or not installed (e.g., the voltmeter is connected in series with the circuit), the whole circuit is disconnected somewhere. Definition of under voltage and over voltage For all the electrical equipments, they have a rated voltage, but in practice, it cannot guarantee to work under rated voltage. It actually works at a range of ±15% of the rated voltage. If the voltage is less than -15%, it is “under voltage”". If the voltage is higher than +15%, it is “overvoltage”". Difference between under voltage protection and over voltage protection Under voltage protection: when the line voltage drops to a certain value, the motor can automatically switch off from the power supply. It’s a protection to avoid the motor running under undervoltage. Overvoltage protection: a mode of protection that disconnects the power supply or reduces the voltage of the controlled equipment when the voltage exceeds the predetermined maximum value. Loss of voltage and loss of voltage protection Loss of voltage: when the power supply fails or for some reason, the voltage of the power supply decreases too much, it is called “loss of voltage”". Loss of voltage protection: when the circuit is lower than the rated voltage or power failure, the corresponding protection effect is obtained. After voltage loss, it is necessary to restart the circuit to operate again to avoid accidents. Send your message to us: Post time: Mar-10-2018
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Sense Coiteann go mór le Leictreoir Know What is phase breaking? A céim nó polyphase dioscónnect i gciorcad méadrú, ach ní chailleann gach céim voltas. Cad is cosaint teip chéim? Is gléas cosanta atá ag brath ar an cealú sruth leictreach i comh chéimnductor ciorcad ilphasacha, nó céim nó caillteanas voltas roinnt chéim de chóras multiphase chun cosc a chur ar an soláthar cumhachta ó á cur i bhfeidhm gléas cosanta. Cad is sos ciorcad? Nuair nach bhfuil an ciorcad bhfuil a chur ar athrú dúnta, nó nach bhfuil na sreanga comhoibriúnnected gceart, nó má tá an fearas dóite amach nó nach bhfuil suiteáilte (m.sh., is é an voltmhéadar connected i sraithcheangal le chiorcad), is é an ciorcad ar fad discosomewher nnectede. Sainmhíniú ar faoi voltas agus os a chionn voltage I gcás gach na trealamh leictreach, tá siad voltas rátáil, ach i gcleachtas, ní féidir é a ráthú a bheith ag obair faoi voltas rátáil. Oibríonn sé i ndáiríre ar raon de ± 15% den voltas rátáil. Má tá an voltas níos lú ná -15%, tá sé "faoi voltas" ". Má tá an voltas níos airde ná + 15%, tá sé" overvoltage "". Difríocht idir faoi chosaint voltas agus os a chionn cosaint voltas Faoi cosaint voltas: nuair a bheidh an Dro voltas líneps go luach áirithe, is féidir leis an mótar aistriú go huathoibríoch amach as an soláthar cumhachta. Tá sé ina chosaint a sheachaint an mótar ag rith faoi undervoltage. Cosaint overvoltage: modh cosanta sin dioscónnects an soláthar cumhachta nó a laghdaíonn voltas an comhTrealamh ntrolled nuair a sháraíonn an voltas an t-uasluach réamhshocraithe. Cailliúint voltas agus caillteanais cosanta voltas Cailliúint voltais: nuair a theipeann ar an soláthar cumhachta nó ar chúis éigin, laghduithe voltas an soláthar cumhachta i bhfad ró-, tá sé ar a dtugtar "caillteanas voltas" ". Cailliúint cosaint voltas: nuair a bhíonn an ciorcad níos ísle ná an voltas rátáilte nó cliseadh cumhachta, an corresponding éifeacht cosanta fhaightear. Tar éis caillteanas voltas, tá sé riachtanach a atosú ar an chuaird ag feidhmiú arís chun timpistí a sheachaint. Seol do theachtaireacht a chur chugainn: Post ama: Mar-10-2018