Pehea e heluhelu ai i kahi helu CAT Multimeter: hoʻomaopopo a hoʻohana no ka hoʻāʻo ʻana i ka voltage kiʻekiʻe

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He aha ka helu CAT o kahi multimeter?
ʻO nā ʻano like ʻole a me kā lākou wehewehe ʻana
Pehea ka hana ʻana o ka ʻōnaehana helu multimeter CAT
He laʻana o ka hoʻohana ʻana i ka ʻōnaehana helu CAT multimeter

Hāʻawi pinepine ʻia nā multimeters a me nā mea hoʻāʻo uila ʻē aʻe i ka helu helu. Hāʻawi kēia i ka mea hoʻohana i ka manaʻo o ka volta kiʻekiʻe e hiki ke ana palekana i ka mea. Hōʻike ʻia kēia mau helu e like me CAT I, CAT II, CAT III, a i ʻole CAT IV. Hōʻike kēlā me kēia pālākiō i ka volta palekana kiʻekiʻe e ana.

He aha ka helu CAT o kahi multimeter?

ʻO ka Category Rating (CAT) kahi ʻōnaehana i hoʻohana ʻia e nā mea hana e hoʻoholo i ke kiʻekiʻe o ka pale i hāʻawi ʻia e nā mea uila i ke ana ʻana i ka volta. Loaʻa nā helu mai CAT I a CAT IV ma muli o ke ʻano o ka volta e ana ʻia.

I ka manawa hea e hoʻohana ai au i ka mika ʻano ʻokoʻa? Aia ka pane i ka hana i hana ʻia.

Hoʻohana pinepine ʻia nā multimeters i nā noi nui a me nā haʻahaʻa haʻahaʻa. No ka laʻana, ke ana ʻana i kahi puka a hoʻāʻo paha i kahi ʻōpuʻu kukui. I kēia mau hihia, lawa paha nā mika CAT I a i ʻole CAT II. Eia nō naʻe, i ka wā e hana ai i nā kaiapuni uila kiʻekiʻe, e like me ka panel breaker circuit, pono paha ʻoe i ka pale o ka piʻi ʻana ma mua o ka mea hiki ke hāʻawi ʻia e ka mika maʻamau. Ma ʻaneʻi hiki iā ʻoe ke noʻonoʻo e hoʻohana i kahi multimeter kiʻekiʻe hou aʻe.

ʻO nā ʻano like ʻole a me kā lākou wehewehe ʻana

Ke ho'āʻo nei e ana i ka ukana, aia 4 mau pae ana i ʻae ʻia.

CAT I: Hoʻohana mau ʻia kēia i nā kaapuni ana i hoʻopili pololei ʻia i ka ʻōnaehana uila uila o ka hale. ʻO nā laʻana he mau mea lawe ʻole i kēia manawa e like me nā kukui, nā hoʻololi, nā mea hoʻopau kaapuni, a me nā mea ʻē aʻe.

LETA XNUMX: Hoʻohana ʻia kēia ʻāpana i nā kaiapuni kahi i ʻoi aku ka liʻiliʻi o nā transient ma luna o ka volta maʻamau. ʻO nā laʻana, nā kumu, nā hoʻololi, nā pahu hui, a me nā mea ʻē aʻe. ʻAʻole hiki a hiki ʻole paha ka haʻalulu uila i kēia mau kaiapuni.

CAT III: Hoʻohana ʻia kēia ʻāpana no nā ana i lawe ʻia kokoke i ke kumu mana, e like me nā panela pono a me nā papa hoʻololi i nā hale a i ʻole nā mea hana ʻoihana. ʻAʻole hiki ke haʻalulu uila ma lalo o kēia mau kūlana. Eia nō naʻe, hiki iā lākou ke hana me ka haʻahaʻa haʻahaʻa ma muli o kahi hana hewa. (1)

Māhele IV: Hoʻohana ʻia nā mea hana i loko o kēia ʻāpana ma ka ʻaoʻao mua o kahi transformer hoʻokaʻawale me ka insulation i hoʻoikaika ʻia a no ke ana ʻana i nā laina mana i waiho ʻia ma waho o nā hale (nā laina ma luna, nā kaula).

Ua hoʻomohala ka International Electrotechnical Commission (IEC) i ʻehā mau pae o ka ikaika o ke kahua uila a me ka magnetic me nā ʻōlelo hoʻāʻo transient no kēlā me kēia.

helehelena	CAT I	CAT II	CAT III	LEKA XNUMX
Hana anakahi uila	150V	150V	150V	150V
300V	300V	300V	300V
600V	600V	600V	600V
1000V	1000V	1000V	1000V
Volta uila	800V	1500V	2500V	4000V
1500V	2500V	4000V	6000V
2500V	4000V	6000V	8000V
4000V	6000V	8000V	12000V
Puna ho'āʻo (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
Ke hana nei i kēia manawa	5A	12.5A	75A	75A
10A	25A	150A	150A
20A	50A	300A	300A
33.3A	83.3A	500A	500A
Ke au kuewa	26.6A	125A	1250A	2000A
50A	208.3A	2000A	3000A
83.3A	333.3A	3000A	4000A
133.3A	500A	4000A	6000A

Pehea ka hana ʻana o ka ʻōnaehana helu multimeter CAT

ʻO nā multimeters maʻamau i hoʻohana ʻia ma ka mākeke e hāʻule i ʻelua mau ʻāpana: CAT I a me CAT III. Hoʻohana ʻia kahi multimeter CAT I no ke ana ʻana i ka uila a hiki i 600V, ʻoiai ʻo ka multimeter CAT III e hoʻohana ʻia a hiki i 1000V. ʻO kēlā me kēia mea i luna e koi ana i kahi papa kiʻekiʻe, e like me CAT II a me IV, i hoʻolālā ʻia no 10,000V a me 20,000V pakahi.

He laʻana o ka hoʻohana ʻana i ka ʻōnaehana helu CAT multimeter

E noʻonoʻo ʻoe e nānā ana ʻoe i ka panel uila o kou hale. Pono ʻoe e nānā i kekahi mau uea. Hoʻopili pololei ʻia nā uea i ka laina mana nui (240 Volts). ʻO ka hoʻopaʻa hewa ʻana iā lākou hiki ke hōʻeha nui a make paha. No ka lawe pono ʻana i nā ana ma kēia kūlana, pono ʻoe i kahi multimeter kiʻekiʻe (CAT II a i ʻole ka maikaʻi) e pale iā ʻoe a me kāu mau mea hana mai ka pōʻino i hoʻokumu ʻia e nā pae ikehu kiʻekiʻe. (2)

E nānā i kekahi o kā mākou ʻatikala ma lalo nei.