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式中 ——瞬時(shí)或短時(shí)過電流脫扣器整定電流值，A；
——可靠系數(shù)，對(duì)動(dòng)作時(shí)間大于0.02s的斷路器，K
取1.35，對(duì)動(dòng)作時(shí)間小于0.02s的斷路器K取
1.7～2.0；
——電動(dòng)機(jī)的起動(dòng)電流，A。
10.5 低壓斷路器
2）當(dāng)配電線路不考慮電動(dòng)機(jī)的起動(dòng)電流時(shí)，按下式計(jì)算整定值
（4-10-8）
式中 ——配電線路的尖峰電流，A；
——可靠系數(shù)，一般取1.35。
3）當(dāng)配電線路考慮電動(dòng)機(jī)的起動(dòng)電流時(shí)，按下式計(jì)算整定值
（4-10-9）
式中 ——正常工作電流和可能出現(xiàn)的自起動(dòng)電機(jī)
的起動(dòng)電流的總和，A。
10.5 低壓斷路器
（3）短時(shí)過電流脫扣器的整定電流
確定本級(jí)斷路器短延時(shí)過電流脫扣器動(dòng)作電流的整定，應(yīng)與下一級(jí)開關(guān)整定電流選擇性配合。本級(jí)動(dòng)作整定電流應(yīng)大于或等于下一級(jí)低壓斷路器短延時(shí)或瞬時(shí)動(dòng)作整定值的1.2倍。若下一級(jí)有多條分支線，則取各分支路低壓斷路器中大整定值的1.2倍。
10.5 低壓斷路器
（4）長(zhǎng)延時(shí)過電流脫扣器整定電流
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APW International GM8102A Axle Shaft New Left
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APW MCLEAN TEP6 NSPP TEP6
2094-AL50S
AMETEK USG SOLFRUNT MODEL 1903 4 1/2" PRESSURE GAUGE 400PSI 1/2 ANPT LBM 150511
2 NEW -8 to +8, 60 PSI Ametek 2.5" Low Pressure Gauge
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9 BLADE STEEL WIND generater HUB 4 AIR-X BLDS Ametek?or?PM generator 5/8" center
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AMETEK USG V534 2" 30"HG-0# 1/8LM CANNER GAUGE 162855A
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MANSFIELD AMETEK MECHANICAL FORCE GAUGE L-2
SAZ4201BC *NEW* OE Solenoid for Prestolite, Ametek 12V
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Ametek Drexelbrook The Point PXLX-Integral Series Point Level Switch Housing
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2094-AL50S
AMETEK/LAMB ELECTRIC 115750 VACUUM MOTOR ***XLNT***
72V AMETEK LOW WIND GENERATOR MOTOR
Ametek USG Pressure Gauge 132784 P1929
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AMETEK 1025A1DPX DOUBLE POLE FOOT SWITCH
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2094-AL50S
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