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Topic Title: Maximum Earth Loop Impedance Values For Common Devices
Topic Summary: What About the Uncommon Devices
Created On: 02 February 2017 11:19 PM
Status: Read Only
Linear : Threading : Single : Branch
 Maximum Earth Loop Impedance Values For Common Devices   - keithredpath - 02 February 2017 11:19 PM  
 Maximum Earth Loop Impedance Values For Common Devices   - Legh - 02 February 2017 11:36 PM  
 Maximum Earth Loop Impedance Values For Common Devices   - alancapon - 03 February 2017 12:14 AM  
 Maximum Earth Loop Impedance Values For Common Devices   - leckie - 03 February 2017 07:17 AM  
 Maximum Earth Loop Impedance Values For Common Devices   - John Peckham - 03 February 2017 11:32 AM  
 Maximum Earth Loop Impedance Values For Common Devices   - keithredpath - 09 February 2017 06:11 PM  
 Maximum Earth Loop Impedance Values For Common Devices   - weirdbeard - 19 February 2017 07:45 PM  
 Maximum Earth Loop Impedance Values For Common Devices   - mapj1 - 19 February 2017 11:16 PM  
 Maximum Earth Loop Impedance Values For Common Devices   - sparkingchip - 26 March 2019 10:40 PM  
 Maximum Earth Loop Impedance Values For Common Devices   - Alcomax - 27 March 2019 02:03 PM  
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 03 February 2017 11:32 AM
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John Peckham

Posts: 9097
Joined: 23 April 2005

Keith

If you do not know the maximum value of Zs for a particular device how do you know if your measured result is satisfactory and will provide ADS is the the required disconnection time?

As I have already posted on this forum I am the custodian of the "Great Book of Circuit Protection" which contains information on many ancient and modern protective devices. I am happy to provide data if I have it to forum members. If anyone has any data sheets on legacy devices I would be most grateful if they could send me them for inclusion in the book.

If you want data on a particular adjustable MCCB I need the make, model number, In rating,model number of trip and any settings.

-------------------------
John Peckham

http://www.astutetechnicalservices.co.uk/
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