A fiús is an leictreach comhpháirt suiteáilte i a ciorcad chun a chinntiú an sábháilte oibriú de an ciorcad . tá lochtach nó neamhghnácha % 2c an reatha leanfaidh ardú . Agus an méadaithe reatha d'fhéadfadh damáiste roinnt tábhachtach nó luachmhar feistí in an ciorcad ach freisin sruthán an ciorcad nó fiú cúis a tine. Más rud é an fiús i gceart curtha an ciorcad % 2c ansin an fiús beidh fiús féin go gearrtha as an reatha nuair an reatha is neamhghnácha ardaithe go a a áirithe airde agus a áirithe am % 2c dá bhrí sin imirt a ról in cosaint an sábháilte oibriú an ciorcad .�% a0
An ról de an fiús
1. under normal circumstances, the fuse is to connect the circuit.
2. in the case of abnormal (overload), as a safety protection element in the circuit, the fuse cuts off and protects the circuit through fusing itself.
Conas fiúsanna obair
When the fuse is energized, the heat converted by electrical energy causes the temperature of the meltable to rise. When the normal working current or the allowed overload current passes through, the generated heat radiates to the the surrounding environment through the meltable and the outer shell, and the heat emitted by convection and conduction gradually reaches a balance with the generated heat. Má an teas ghintear is mó ná an teas teas astaítear % 2c an farasbarr teas de réir a chéile carnadh ar an meltable % 2c déanamh an meltable teocht ardú % 3b Nuair a shroicheann an teocht agus níos mó an leá pointe an meltable an meltable beidh leá % 2c agus gearrtha as an reatha % 2c a imríonn an ról de sábháilteacht cosaint ciorcad.
Fachtóirí a théann i bhfeidhm ar fiús saol
1. Ag obair timpeallacht teocht % 3a Ard comhthimpeallach teocht beidh damáiste an saol de an fiús .
2. Pulse current: The fuse will de réir a chéile age with the increase of pulse energy and frequency.
3. Daoine eile: Do example, the pipe clamp in contact with the fuse, the length of the connecting wire, and the cross-sectional area
Éifeachtaí de ag dul in aois fiúsanna ar úsáid
Even if the fuse is aged, there is no danger that the current that be be cut off will not blow. After the fuse aging, it is equivalent to a decrease in the rating (current) rather an increase. So there is no safety problem in the circuit, but it will cut off the circuit under a small overload current or pulse.
