Selection Quality and Maintenance Guides
Technical notes drawn from our own production, inspection and field experience, written for engineers who have to justify a specification rather than browse a brochure.
What the Black RF Glaze on an Insulator Actually Does
Semiconductor RF glaze standardises the potential gradient across the insulator surface so capacitive arcs do not generate radio frequency noise.
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Which Defects Are Acceptable in a Porcelain Insulator
Incoming inspection criteria for glazed and unglazed surfaces, based on the definitions used in international standards such as IEC.
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How Insulator Glaze Colour Is Determined
Colour has no effect on electrical or mechanical performance, but ANSI grey is defined to a Munsell notation with stated tolerances.
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How to Dispose of Porcelain Insulators Removed From Service
Withdrawn porcelain can be reused as fill or ground for refractory and mortar filler once the metal hardware is separated.
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Glass or Porcelain Suspension Insulators
Both materials meet the same electrical ratings. The decision usually comes down to how a failed unit is detected in service.
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Choosing a Shed Profile for Contaminated Sites
Standard, fog, double umbrella and aerodynamic profiles each answer a different kind of deposit. Nominal creepage alone does not decide the choice.
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How Electric Porcelain Is Made in Shangbu
The production sequence that has run in Shangbu Town, Luxi County, for generations, from raw material store to finished insulator.
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Reading an Insulator Datasheet Before You Order
Which figure to design against, which one is a type test result, and which dimensions decide whether the unit fits your structure.
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Send the two type designations and the site conditions. We will tell you what the published figures mean for your case.