PTC UL1434标准

琥珀流云

广东安规检测
有限公司提供：

小型摆管淋雨试验机

IPX5X6X7喷水试验机

1000L恒温恒湿箱

各种试验指现货

可程式恒温恒湿试验箱

水平垂直燃烧机

自动卷线器试验机

耐划痕试验机

各种灯头量规现货

灼热丝试验机现货

GB1002插头量规

IPX1-X7淋雨现货

IEC61347/UL935镇流器热试验箱

灯具防风罩

IK冲击试验机

UL498插头插座量规

VDE0620插头插座量规

稳定性试验台

家电温升测试角

针焰试验机现货

热电偶焊机现货

家电125mm试验指

E12灯头量规

无绳壶无绳电熨斗插拔寿命试验机

IEC60335试验指甲

请问如下这个测试怎么做啊
. O! E, i4 A# ~  }18 Limited Short-Circuit Test
18.1 General
0 P' E/ J; t1 P* b9 R! E0 o: t18.1.1 Following the test specified in 18.2.1 or 18.3.1, a thermistor shall:
a) Comply with the requirements in 11.1.2 or be in a permanently high resistance state; and
b) Complete the test without igniting the cotton indicator or opening the ground fuse described in
18.1.4 and 18.1.5.
18.1.2 When the results of the Limited Short-Circuit Test on the thermistor itself comply with 18.1.1, the
test is not required to be repeated during the investigation of the end product.
# a- T) I3 M! R6 M18.1.3 Three samples of a control thermistor are to be subjected to this test. The test is to be conducted
$ f+ a( V' ?2 \" dat rated voltage (Vr).
  U) U0 k" ^) H18.1.4 A ground fuse is to be connected between the metal enclosure, metal mounting surface, or metal
screen described in 18.1.5 and the unswitched line to indicate an arc-over to the enclosure or mounting
surface. Where each line is switched, the fuse is to be connected between the enclosure, mounting
1 H7 B$ S7 {6 H' Dsurface, or screen and the live pole least likely to arc to ground. The fuse is to be a 3.0 A nontime-delay
fuse having a voltage rating not less than the rated voltage (Vr) of the thermistor.
18.1.5 Cotton not less than 12.7 mm (1/2 in) thick is to surround a metal screen enclosing the thermistor
at a distance not more than 12.7 mm from all parts of the thermistor.
18.1.6 The cotton is to be surgical cotton, such as commonly used for medical purposes.