Tracking Resistance For Surge Protective Device

According to IEC 61643 clause 6.2.9, insulating materials necessary to retain live parts in their position shall be composed of non-tracking materials, or they shall have sufficiently diementioned. Testing is in accordance with IEC 60112, solution A with a test voltage 175 V.
Zhilitong Electromechanical Co., Ltd manufactures textile testing equipment ZLT-LDQ1, which is meeting with IEC 60112 standard and can proforma tracking test with test voltage range 0-600 V.

Comments

Post a Comment

Popular posts from this blog

What are the parts that isn’t suitable for glow wire test?

Image
On the basis of IEC 60335-1 clause 30.2.3, glow wire test apparatus of IEC60695-2-11 is not applicable to  some parts of electrical appliance as below: 1.  Parts supporting welded connections 2.  Parts supporting connections in low power circuits described in 19.11.1 3.  Soldered connection on printed circuit boards 4.  Connections on small components that are mounted on printed circuit boards 5.  Parts within 3 mm of any of these connections Note Examples of small component are diodes, transistors, resistors, integrated circuits and capacitors not directly connected to the supply mains. The glow wire test apparatus   ZLT-GTR produced by Zhilitong Electromechanical Co., Ltd , conforms to requirements of IEC60335-1 standard.
Read more

The comparison between new and old standard for glow wire tester（1)

Image
The newest IEC60695-2-10:2013 standard for   glow wire test apparatus was carried out for some years , compared with the old standard, the requirements of glow wire loop , thermocouple, silver foil test temperature has been updated. First, according to old standard , the demanded thermocouple wire diameter is 0.5 mm, but the new standards for the wire diameter requires 1.0mm, which would lead corresponding change for glow wire loop .  The thermocouples which are mounted in  glow wire test apparatus  ZLT-GTR manufactured by  ZHILITONG Electromechanical Co.Ltd , are purchased from B+B  company, with 1.0mm wire diameter, K type, insulation against ground,complying with above requirements of newest IEC 60695 standard.
Read more