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Bridget Edinger

Calculating Creepage and Clearance Early Avoids
Altitude at which equipment is to be operated. . Clearance distance helps prevent dielectric breakdown between electrodes caused by the ionization of air. .
http://www.ce-mag.com/ce-mag.com/archive/01/03/ProductSafety.html

UNCERTAINTIES IN THE APPLICATION OF ATMOSPHERIC AND ...
ALTITUDE CORRECTIONS AS RECOMMENDED IN IEC STANDARDS. Dong Wu1* . Abstract: The dielectric strength of air is influenced by air density ( temperature and pressure) and . higher than 1000 m, the clearance requirements shall .
http://www05.abb.com/global/scot/scot221.nsf/veritydisplay/e4997803a99e1a41c12576640046b045/$file/uncertainties%20in%20the%20application%20of%20atmospheric%20and%20altitude%20corrections%20as%20recommended%20in%20iec%20standards.pdf

Working on Exposed Energized Parts. - 1910.269 App B
Insulator design and lengths and the clearances to structural parts (which, for low . Separated from other conducting surfaces by a dielectric (including air space) . Altitude. The electrical strength of an air gap is reduced at high altitude, due .
http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_id=9870&p_table=STANDARDS

Circuit Separation
Altitude at which equipment is to be operated. . Clearance distance helps prevent dielectric breakdown between electrodes caused by the ionization of air. .
http://cableorganizer.com/articles/circuit-separation.html


 

Dana Dexter

High Altitude Considerations of ... - NEI Electric Power Engineering
ground using air as the dielectric for both phase to phase and phase to ground . clearances for high-altitude applications involves the high voltage to low .
http://www.neiengineering.com/pdfs/paper5JN.pdf

Understanding Electrical Clearances | PCB Design - Design Your ...
Clearance is needed between high voltage traces to prevent a dielectric breakdown between traces caused by the air ionizing. If humidity, altitude, and .
http://www.pcbdesign.org/pcb-layout/understanding-electrical-clearances/

Overvoltages and insulation coordination in MV and HV
Definition p. 11. Clearance and voltage withstand p. 11 . figure 3) present a risk of dielectric breakdown . s variation of air pressure with altitude; s variation of .
http://www.ops-ecat.schneider-electric.com/cut.CatalogueRetrieverServlet/CatalogueRetrieverServlet?fct=get_element&env=publish&scp_id=Z000&el_typ=rendition&cat_id=GL_DEF_DESIGNERV3&maj_v=6&min_v=3&nod_id=0000000003&doc_id=090197c6800bd35e&frm=pdf&usg=&dwnl=true

Product Safety Considerations for Insulation Coordination of Low ...
•IEC 60664-1, Annex A, Table A.2 has altitude correction factors for clearances. For example, required clearance must be multiplied by 1.14 for 3000m .
http://www.denverpels.org/Downloads/Denver_PELS_20090915_Aldous_Insulation_Coordination.pdf

Application Bulletin AB-1 IsoLoop Standards Guide
electrical properties of the separate circuits on either side of the isolation . Altitude up to 2000 meters unless otherwise specified. . (RMS or DC) Clearance .
http://www.nve.com/Downloads/ab1.pdf



Julie Levesque

1. General Description of Aluminum Electrolytic Capacitors
dielectric constants and minimum thickness of dielectrics used in various types of . The clearance between the two electrode foils is filled with liquid electrolyte. .
http://www.nichicon.co.jp/english/products/pdf/aluminum.pdf

White Paper
Dielectric failure is electric breakdown within a solid insulator between two . High Voltage Modularized Assemblies for High Altitude Environments,” Proc. .
http://www.dfrsolutions.com/uploads/white-papers/Failure_Mechanisms_in_High_Voltage_PCBs.pdf


Laurie Lucier

Catalyst 6500 Series Switch Installation Guide - Preparing for ...
Multiple switches can be rack-mounted with little or no clearance above and below the chassis. . Adequate ventilation is particularly important at high altitudes. . because of the dielectric properties of the materials used in their construction. .
http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/hardware/Chassis_Installation/Cat6500/02prep.html

PCB DESIGN PARAMETERS
On ground and power planes the clearance pads are the inner layer areas free . It is beneficial to discuss special dielectric requirements with Printca during the .
http://www.printca.dk/download/designparameters.pdf



Laurie Lucier

Design Guide for Rural Substations
2.3.3 Altitude . . 4.9 ELECTRICAL CLEARANCES.................................................... .................................. 153. 4.10 BARE CONDUCTORS. .
http://www.usda.gov/rus/electric/pubs/1724e300/1724e300.pdf










Chris Irish

Creepage and clearance distances
The clearance is defined as shortest distance through the air between two . 1) For higher altitudes see table 2b from DIN VDE 0110 for multiplying factors. .
http://www.harkis.harting.com/WebHelp/EGds/WebHelp/GBgdsCreepage_and_clearance_distances.htm

INTERNATIONAL STANDARD IEC 62271-111 IEEE C37.60™
Insulation (dielectric) tests . . Dielectric withstand test; 1-min. dry power- frequency. . Annex E (informative) Altitude correction factors. .
http://webstore.iec.ch/preview/info_iec62271-111%7Bed1.0%7Den.pdf

 

Becca Cleary

Becca Cleary

Mine Safety and Health Administration - Technical Support ...
intensity exceeds the gas dielectric' strength, and average electric field intensity . B. Comparing (f0)h to the IEC Clearance Altitude Correction. Factors .
http://www.msha.gov/S&HINFO/TECHRPT/ELECTRICAL/ELECLEAR.pdf

by David L. Jones
due to the thinning of the atmosphere at high altitudes. Conformal coating also improves these figures for a given clearance, and this is often used on military .
http://www.alternatezone.com/electronics/files/PCBDesignTutorialRevA.pdf





Lori Emerson - Office Administrator

IPC-2221A Table of Contents
Material Selection for Electrical Properties .... 17. 4.1.3 . Coating Over Assembly (Any Elevation) ........ 43 . (Usable area determination includes clearance .
http://www.ipc.org/TOC/IPC-2221A.pdf


 

 
 
 
   
 
 
   
 
 

© 2011 dielectric and clearance and altitude

Martindale's Calculators On-Line Center: Part I:I-N - Medical ...
Altitude Medicine ~ Bioethics ~ Blood, Blood Loss, Hemoglobin British National . Poisson Distribution Signal Detection ~ Tissue Dielectric Properties ~ Wilson's Disease / . Creatinine Clearance Calculator INPUT Values include: "...Sex; Age .
http://www.martindalecenter.com/Calculators1B_3_MedAC.html