Page 13 - 電機與電子群電工機械升學寶典

Chapter 1 概論及基礎電磁理論

(4) ᕘ֛ཥݴ€Ij

1 ೯ཥዚᕘ֛ཥݴ I = ፩̈̌ଟ P o f
ᕘ֛ཥᏀ V

2 ཥਗዚᕘ֛ཥݴ I = ፩̈ዚ૛̌ଟ P o f
ᕘ֛ཥᏀ V # ࣖଟ η

(5) ዧှ˙όj̮ዧeʱዧeЕዧၾልዧഃ˙όf

(6) ഒᇝഃॴjɓছમ͜ A ॴ€105℃eE ॴ€120℃eB ॴ€130℃f

2. 交流電機重要規格j

(1) ᕘ֛ཥᏀ€V

(2) ᕘ֛᎖ଟ€fj਷ʫԴ͜ 60Hzf

(3) ᕘ֛࢙ඎjίᕘ֛ཥᏀʿᕘ֛ᔷ஺ɨd೯ཥዚ˸ൖί̌ଟ€SڌͪdఊЗ
މͿτ€VAא̑Ϳτ€kVAfཥਗዚ፩̈ዚ૛̌ଟ˸ྼ̌ଟ€Pڌͪd

ఊЗމ WekW א HP ڌͪf
(4) ᕘ֛ᔷ஺€rpmj˸ӊʱᙒʘᔷ஺ڌͪf

(5) ᕘ֛ཥݴ€I

1 ఊ޴೯ཥዚᕘ֛ཥݴ I = S 1 f
V
S
2 ɧ޴೯ཥዚᕘ֛ཥݴ I = 3 f
3 V

P o
3 ఊ޴ཥਗዚᕘ֛ཥݴ I = V # cosθ # η f

4 ɧ޴ཥਗዚᕘ֛ཥݴ I = P o f
3 V # cosθ # η

3. 變壓器重要規格j

(1) ޴ᅰjϞఊ޴eɧ޴ʿε޴f

(2) ᕘ֛᎖ଟ€fj਷ʫ᎖ଟމ 60Hzd਷̮ۆʔˇમ͜ 50Hzf

(3) ᕘ֛࢙ඎj˸ɚϣਉᕘ֛ཥᏀၾᕘ֛ཥݴʘൖί̌ଟڌͪdఊЗމͿτ
€VAא̑Ϳτ€kVAf

(4) ᕘ֛ཥᏀձᅺ๟ʱટ᎘ཥᏀjʱટ᎘ᓃᅰஷ੬˸ 5 ᓃމᅺ๟fʱટ᎘ᇍఖ

௰੬ٙ͜Ϟ ! 5% ձ ! 2.5% Շ၇f

ৰɪࠑ̮d֠Ϟഒᇝഃॴeટᇞ˙όeԴ͜ఙהe๝ʺeиۍ˙όeࣖଟe

ཥᏀᜊਗଟʿڜҤഃत׌ѩᅺͪ׵თ೐ɪf

3