Umehluko phakathi kwe-Surge Protective Device kanye ne-Overvoltage Protector

Idivayisi yokuvikela ukukhuphuka kanye nezivikeli ze-overvoltage ziyimishini emibili yokuvikela imishini kagesi esetshenziswa kakhulu. Zingakhawulela noma zikhiphe i-overvoltage yesikhashana ohlelweni lwamandla futhi zivimbele imishini kagesi ukuthi yonakaliswe umbani noma ezinye izimbangela. Kodwa-ke, izimiso zazo zokusebenza, izinkomba zokusebenza, izimo zokusetshenziswa kanye nezindinganiso zikazwelonke zonke zihlukile. Lesi sihloko sizoqhathanisa futhi sihlaziye izivikeli ze-overvoltage kanye nezivikeli ze-overvoltage kulezi zici ezine ukuze abafundi bakwazi ukukhetha nokusebenzisa kahle la madivayisi amabili okuvikela.

Idivayisi Evikelayo Yokukhuphuka (I-SPD) iyithuluzi likagesi elisebenzisa amandla aphansi elisetshenziswa ezinhlelweni zokusabalalisa amandla aphansi ukuze kuncishiswe amandla aphakeme ngokushesha kanye namandla okukhipha amandla angaphezulu. Ingxenye yalo eyinhloko yi-zinc oxide varistor (Metal Oxide Varistor, MOV), enezici zamandla angewona umugqa, okungukuthi, lapho amandla asetshenzisiwe ephansi kunomkhawulo wayo, ukumelana kwawo kuphakeme kakhulu futhi cishe akukho mkhawulo odlulayo; Lapho amandla asetshenzisiwe edlula umkhawulo wayo, ukumelana kwawo kwehla ngokushesha, kudlule inani elikhulu lamandla. Ngale ndlela, lapho kwenzeka amandla aphakeme ngokushesha kugridi yamandla, isivikelo sokukhuphuka sizovula ngokushesha futhi sikhiphe amandla angaphezulu emgqeni womhlaba, ngaleyo ndlela sivikele imishini kagesi elandelayo.

Isivikelo Sokuguguleka Kwamandla (i-OVP) idivayisi enganqamula amandla ngokuzenzakalelayo nangokushesha. Ingxenye yayo eyinhloko inzwa ye-voltage (i-Voltage Sensor), engathola izinguquko ze-voltage kugridi yamandla futhi ixhunywe kusekethe yokulawula. Lapho i-voltage kugridi yamandla idlula ububanzi obubekiwe, isekethe yokulawula izoqala ukushintsha ukuze inqamule ukunikezwa kwamandla, ngaleyo ndlela ivikele imishini kagesi elandelayo.