UL1573 41.2 test for limited - voltage / current circuit transformers 怎么测试

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UL1573 41.2 test for limited - voltage / current circuit transformers 怎么测试
4 s" A# z7 l0 S) z" q

invictus

受教了

fasten

head0819 发表于 2016-11-16 11:43
9 B" H: w7 e8 G6 j& w& K你把标准截图上来啊！

; V5 }5 H6 ?- N41 Test for Limited-Voltage/Current Circuit Transformers
! w% O) ]3 Z3 R: S& T1 O/ E41.1 A transformer intended to power a limited-voltage/current circuit shall be tested as described in 41.2.
41.2 The maximum volt-ampere output capacity of the secondary winding is to be determined as follows:
; t+ t* I4 q+ v4 p3 F" mAt room temperature, the primary winding of the transformer is to be connected as intended in the
equipment and the secondary winding in question is to be connected to a variable resistance load. When
3 Z5 _0 l% Q9 m! r' d9 {( Ka fixed-series impedance or regulator circuit is relied upon to limit the output, that impedance or regulator
circuit is to be included in the circuit during the test. A multiple-winding transformer is to have one
+ u. O- i, X; u; ]4 P' ]9 esecondary winding tested with all other secondary windings open-circuited, and is to be allowed to cool to
room temperature again before another winding is tested. A primary winding is to be connected to a
  ]- e3 H5 A6 H  h3 [" \- asource of rated voltage. The load on the secondary is to be varied in 10 increments from open-circuit to
9 }8 ]+ l. B0 eshort-circuit condition in 2-1/2 minutes. For each step or increment in the resistance, the product of the
! k' n) R2 X) t0 y  ], U4 [# \output voltage and current is to be recorded, plotted, and run as a smooth curve. The peak value obtained
from the curve shall not exceed the volt-ampere value specified in Table 27.1. When two or more
secondary windings supply interconnected circuits, the sum of the outputs of the windings in question shall
) f4 D/ r8 t$ v8 X  c) F1 _+ Snot exceed the values specified in Table 27.1.
1 K! V% R8 Z( \* r# V: A
做舞台灯的大部分都在广州及花都，2010-2012年间有多少家的舞台灯具被我拆的七零八落呢？

head0819

你把标准截图上来啊！