Maitiro ekuverenga CAT multimeter rating: kunzwisisa uye kushandiswa kwekuyedza yakanyanya voltage

Zviri mukati

Chii chinonzi CAT chiyero che multimeter?
Zvikamu zvakasiyana uye tsananguro dzadzo
Iyo CAT multimeter rating system inoshanda sei
Muenzaniso wekushandisa CAT multimeter rating system

Multimeters uye mamwe magetsi emagetsi ekuedza anowanzo kupihwa chikamu chechikamu. Izvi ndezvekupa mushandisi pfungwa yeiyo yakanyanya voltage iyo mudziyo unogona kuyera zvakachengeteka. Aya makero anounzwa seCAT I, CAT II, CAT III, kana CAT IV. Chiyero chega chega chinoratidza huwandu hwakachengeteka hwemagetsi ekuyera.

Chii chinonzi CAT chiyero che multimeter?

Category Rating (CAT) igadziriro inoshandiswa nevagadziri kuona mwero wekudzivirira unopihwa nemidziyo yemagetsi pakuyera voltage. Zviyero zvinotangira paCAT I kusvika kuCAT IV zvichienderana nerudzi rwevoltige iri kuyerwa.

Ndirini pandinofanira kushandisa imwe yemhando mita? Mhinduro yacho inobva pabasa riri kuitwa.

Multimeters anowanzo shandiswa mune mains uye yakaderera voltage application. Semuyenzaniso, kuyera pekubuda napo kana kuyedza girobhu. Muzviitiko izvi, CAT I kana CAT II mamita angangove akakwana. Nekudaro, kana uchishanda munzvimbo dzepamusoro-voltage, senge redunhu breaker pani, ungangoda imwe chengetedzo yekuvhiya kupfuura iyo yakajairwa mita inogona kupa. Pano iwe unogona kufunga nezve kushandisa nyowani, yepamusoro yakayerwa multimeter.

Zvikamu zvakasiyana uye tsananguro dzadzo

Paunenge uchiedza kuyera mutoro, pane 4 inogamuchirwa mazinga ekuyera.

CAT I: Izvi zvinonyanya kushandiswa mumasekete ekuyera ayo akabatana zvakananga kune chivakwa chemagetsi wiring system. Mienzaniso inosanganisira zvikamu zvisiri-zvino-zvinotakura zvakadai semarambi, mashizha, mavhiriki emagetsi, nezvimwewo. Kuvhundutsa kwemagetsi hakugoneki kana kusingakwanisi pasi pemamiriro ezvinhu akadaro.

TSAMBA XNUMX: Ichi chikamu chinoshandiswa munzvimbo dzinopfuura dzichingori pamusoro penguva dzose voltage. Mienzaniso inosanganisira sockets, switches, junction boxes, etc. Kuvhundutsa kwemagetsi hazvigoneki kana kuti hazviitike munzvimbo idzi.

CAT III: Chikwata ichi chinoshandiswa pazviyero zvakatorwa padyo nenzvimbo yemagetsi, senge pane utility panel uye switchboards muzvivakwa kana maindasitiri. Kuvhundutsa kwemagetsi hakuitike zvakanyanya pasi pemamiriro aya. Nekudaro, ivo vanogona kuitika neiyo yakaderera mukana nekuda kwekusashanda zvakanaka. (1)

Chikamu IV: Zviridzwa zvinosanganisirwa muchikamu ichi zvinoshandiswa padivi rekutanga reshanduko yekuzviparadzanisa ine yakasimbiswa insulation uye yezviyero patambo dzemagetsi dzakaiswa kunze kwezvivakwa (mitsetse yepamusoro, tambo).

Iyo International Electrotechnical Commission (IEC) yakagadzira mazinga mana emagetsi uye magineti esimba remumunda ane kurudziro yenguva pfupi yebvunzo kune yega yega.

Features	CAT I	CAT II	CAT III	LETTER XNUMX
Kushanda voltage	150V	150V	150V	150V
300V	300V	300V	300V
600V	600V	600V	600V
1000V	1000V	1000V	1000V
Transient voltage	800V	1500V	2500V	4000V
1500V	2500V	4000V	6000V
2500V	4000V	6000V	8000V
4000V	6000V	8000V	12000V
Test source (impedance)	30 ohm	12 ohm	2 ohm	2 ohm
30 ohm	12 ohm	2 ohm	2 ohm
30 ohm	12 ohm	2 ohm	2 ohm
30 ohm	12 ohm	2 ohm	2 ohm
Operating current	5A	12.5A	75A	75A
10A	25A	150A	150A
20A	50A	300A	300A
33.3A	83.3A	500A	500A
Transient current	26.6A	125A	1250A	2000A
50A	208.3A	2000A	3000A
83.3A	333.3A	3000A	4000A
133.3A	500A	4000A	6000A

Iyo CAT multimeter rating system inoshanda sei

Iwo anonyanya kushandiswa multimeters pamusika anowira mumapoka maviri: CAT I uye CAT III. A CAT I multimeter inoshandiswa kuyera voltage kusvika ku600V, nepo CAT III multimeter inoshandiswa kusvika 1000V. Chero chipi zvacho chiri pamusoro chinoda giredhi rakatonyanya, rakadai seCAT II neIV, rakagadzirirwa 10,000V uye 20,000V maererano.

Muenzaniso wekushandisa CAT multimeter rating system

Fungidzira kuti uri kutarisa pamagetsi eimba yako. Unofanira kutarisa waya dzakawanda. Waya dzakabatanidzwa zvakananga kune tambo huru yemagetsi (240 Volts). Kuvabata nokukanganisa kungaguma nokukuvadzwa kwakakomba kana kuti rufu. Kuti utore zviyero zvakachengeteka mumamiriro ezvinhu aya, iwe unozoda yakakwira giredhi multimeter (CAT II kana zvirinani) iyo inokudzivirira iwe nemidziyo yako kubva mukukuvadzwa kunokonzerwa neakakwira simba. (2)

Tarisa zvimwe zvezvinyorwa zvedu pazasi.