• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
  • Skip to footer

Test & Measurement Tips

Oscilloscopes, electronics engineering industry news, how-to EE articles and electronics resources

  • Oscilloscopes
    • Analog Oscilloscope
    • Digital Oscilloscope
    • Handheld Oscilloscope
    • Mixed-signal Oscilloscope
    • PC-based Oscilloscopes – PCO
  • Design
  • Calibration
  • Meters & Testers
  • Test Equipment
  • Suppliers
  • Video
  • EE Learning Center
  • FAQs
You are here: Home / Meters & Testers / High current test on LV and HV cable accessories

High current test on LV and HV cable accessories

October 6, 2009 By Test and Measurement Editor 1 Comment

HIPOT-articleSefelec manufactures current injection sources in combination with hipot testers in order to answer to some international standard for the high current tests on cable accessories, underground connection accessories, low voltage underground network connection, high voltage cable accessories (outdoor terminations, switchgear terminations, transformer terminations,…)

The concerned accessories are for instance connected to the following standards: NF (C 33-002), NF (C 33-210), … The following European document of harmonization also gives details of the method to follow: CENELEC HD605S1.

Definition:
The long run tests (also called ageing test) are made during several hours, days or months.
The accessories under test are often put under ground, under water, or in the air for the test, and are submitted to thermic cycles by applying an AC current.
An AC voltage is also permanently applied at the same time between phase and ground ; this test is called the hipot test (also called hi-pot test, dielectric withstand test, dielectric strength test, breakdown test, or flash test).
No breakdown (also called flash, arc) should occure during this test.

Example of typical Test:
This ageing test (also called run test) made on the accessories combines a test in current (thanks to a window transformer, also called current injection transformer) at for instance the following AC voltage/current : 20/24/36 VAC, 3 x 700A or 10VAC, 1 x 1200A, …), and a test of hipot (at for instance 2kVAC, 50 mA, 60 kVAC, 200kVAC, …).
A loop is made with the cable.
This loop holds 2 or 4 accessories.

Test specifications:
An example of the duration of the ageing test could be the following one :
210 cycles of 24 hours (8 hours heat up / 16h cooling cooling down) at (100 ± 5) °C
= 5000 hours under voltage
= 7 months

Filed Under: Meters & Testers, New Articles

Reader Interactions

Comments

  1. Test and Measurement Equipment says

    October 28, 2009 at 2:21 am

    A good tool in measuring high current. Despite of its size but it does provide safety from high current accident.

    Log in to Reply

Leave a Reply Cancel reply

You must be logged in to post a comment.

Primary Sidebar

Test & Measurement Handbook


Oscilloscopes Finder

Search Millions of Parts from Thousands of Suppliers.

Search Now!
design fast globle

Subscribe to our Newsletter

Subscribe to test and measurement industry news, new oscilloscope product innovations and more.

Subscribe Today

EE TRAINING CENTER CLASSROOMS

EE Classrooms

RSS Current EDABoard.com discussions

  • What is the function of the long stub?
  • Please help to identify the signal input port on board
  • Level shifter for differential oscillator
  • Controller for Switched Reluctance Motor
  • Boost converter, 3W...shielded or unshielded inductor?

RSS Current Electro-Tech-Online.com Discussions

  • Passthrough charging-simple but impossible to achieve?
  • Relay connectors unknown?
  • Background of Members Here
  • Will Header and socket hold this PCB OK?
  • software PWM

Footer

EE World Online Network

  • DesignFast
  • EE World Online
  • EDABoard
  • Electro-Tech Online
  • Analog IC Tips
  • Microcontroller Tips
  • Power Electronic Tips
  • Sensor Tips
  • Connector Tips
  • Wire and Cable Tips
  • 5G Technology World

Test & Measurement Tips

  • Subscribe to our newsletter
  • Advertise with us
  • Contact us
  • About us
Follow us on TwitterAdd us on FacebookFollow us on YouTube Follow us on Instagram

Copyright © 2022 · WTWH Media LLC and its licensors. All rights reserved.
The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media.

Privacy Policy