Your One-Stop Solution For Cable & Wire Accessories!

RoHS Compliant Cable & Wire
Technical Information


Contact Us About Us  
 
LinkedIn Facebook Twitter You Tube Hi-Tech Controls Blog
Cables & WiresEnclosures (Plastic & Metal)Pneumatic Components Liquid Tight Strain Relief FittingsCircular ConnectorsConduit System (Tubing, Fittings, etc.)Accessories & Adapters, Reducers, Enlargers
 
easyquote
*E-mail
*Name
*Company
*Phone
*State
*Zip Code
*Country
Please answer the security question:
3+2=
(*) Required Fields
Catalogs / Samples, Full Quote & Contact Information
303-680-5159
1-800-677-8942
dropdownbox

Nominal Voltage and Operating Voltage

Nominal Voltage

Voltage of cables and wires, by which the construction and the tests in respect of electrical characteristics are to be referred.
According to DIN VDE 0298 and IEC 183 the cables are specified U0/U, where
U0 = cable nominal voltage between the conductor and the metal covering or earth and 
U = cable nominal voltage between the phase conductors, for 3-phase U = √3 U0
According to IEC regulations, the maximum permissible voltage Um is given in brackets.
The identification is: U0/U (Um)
As the insulation of plastic insulated cables are measured with a nominal voltage U0/U = 0.6/1 kV and all radial field cables for the voltage U0, these cables are suitable for installation:

  • in single phase systems, in which the both phase conductors are insulated, with nominal voltage UN = 2 U0
  • in single phase systems, in which one phase conductor is grounded, with the nominal voltage UN = U0
Operating Voltage

Voltage between conductors of a power system or between a conductor and ground under specified condition in a given time during an undisturbed operation.

Coordination of Cable Nominal Voltages
Nominal Voltage
U0/U (kV)
For 3-phase
System (kV)
For 1-phase Alternating Current
Both phase conductors
insulated (kV)
One phase conductor
grounded (kV)
0.6/1 1 1.2 0.6
3.6/6 6 7.2 3.6
6/10 10 12 6
12/20 20 24 12
18/30 30 36 18

Coordination of Maximum Permissible Operating Voltages
Nominal Voltage
U0/U (kV)
Max. Voltage for
3-phase System (kV)
For 1-phase Alternating Current
Both phase conductors
insulated (kV)
One phase conductor
grounded (kV)
0.6/1 1.2 1.4 0.7
3.6/6 7.2 8.3 4.1
6/10 12 14 7
12/20 24 28 14
18/30 36 42 21

Note:
Cable with U0/U 0,6/1 kV is allowed for Direct Current Systems, of those the maximum operating voltage conductor/conductor 1.8 kV or conductor/ground 1.8 kV not to be exceeded.

quote
Items For Quote

   
quote
box
Sealcon is the Exclusive Importer of HUMMEL products. We offer over 6,000 different Types and Sizes of RoHS Compliant Liquid Tight Strain Relief Fittings, Cord Grips, Cable Glands, Circular Connectors, Conduit System, Industrial Enclosures and Other Related Cable Management Products which are rated the best in the industry.
7374 S. Eagle Street
Centennial, CO 80112-4221 USA
Toll Free: 800-677-8942 / 303-680-5159 FAX: 303-680-5344
Valid XHTML 1.0 Transitional
To Top of Page Top of Page

Copyright © 2018 Hi-Tech Controls Inc. All Rights Reserved
|Domestic & International Cables|Enclosures |Liquid Tight Strain Relief Fittings & Accessories|
|Circular Connectors|Conduit System|Pneumatics|Cable Index|Enclosure Index|Search|
|Media|Site Map|Company Overview|Contact|Privacy Policy|Copyright Notice|