Characterization of dielectric properties of insulating materials for use in an HVDC reference divider

Dielectric properties of polyethylene (PE), polyoxymethylene (POM) and ceramic glass (MACOR) are compared. Their suitability to act as a support for a resistor chain in a wideband HVDC reference divider is characterized. The support material forms a parallel capacitance to the resistive resistor cha...

Full description

Saved in:
Bibliographic Details
Main Authors: Elg, A., Kharezy, M., Bergman, A., Hallstrom, J.
Format: Conference Proceeding
Language:English
Subjects:
Acetal resins
Ceramic glass
Current measurement
Depolarization currents
dielectric
Dielectric constant
Dielectric materials
Dielectric properties
Electric current measurement
Electromagnetism
Frequency dependence
High voltage techniques
HVDC
HVDC transmission
Materials
Measurements
Metrology
Orders of magnitude
Parallel capacitance
Polyoxymethylene
Resistors
Space charge
Support materials
Wide-band
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Dielectric properties of polyethylene (PE), polyoxymethylene (POM) and ceramic glass (MACOR) are compared. Their suitability to act as a support for a resistor chain in a wideband HVDC reference divider is characterized. The support material forms a parallel capacitance to the resistive resistor chain, and a bandwidth of more than 100 kHz is needed. The frequency dependence of dielectric constant has been measured in the range 20 - 100 kHz. The depolarization current of these materials was measured to be at least 6 orders of magnitude lower than the current through the resistive chain. Neither MACOR nor PE does build up space charge which POM does. Possessing the highest dielectric constant makes MACOR well suited for the application.
ISSN:0589-1485
2160-0171
DOI:10.1109/CPEM.2012.6250670