Voltage Levels to IEC 60038 

By on

The standard aims to consolidate AC and traction voltages within the industry and defines the following bands:

  • band 1 - A.C. systems 100 V to 1000 V
  • band 2 - A.C and D.C traction systems
  • band 3 - A.C. systems above 1 kV to 35 kV
  • band 4 - A.C. systems above 35 kV to 230 kV
  • band 5 - A.C. systems above 245 kV

A.C. systems 100 V to 1000 V

Nominal Voltage, V
Three-phase four-wire or three-wire systems Single-phase three-wire systems
50 Hz 60 Hz 60 Hz
- 208/120 240/120
- 240 -
400/230 4808/277 -
690/400 480 -
- 600/347 -
1000 600 -

Supply voltage range ±10 % at the supply terminals
Supply terminal to final equipment maximum 4% voltage drop

A.C and D.C traction systems

Voltage, V
Lowest Nominal Highest Frequency
D.C. Systems
(400) (600) (720)
500 750 900
1000 1500 1600
2000 3000 3600
A.C. Single Phase Systems
(4750) (6250) (6900) 50 or 60
12000 15000 17250 16 2/3
19000 25000 27500 50 or 60

Bracketed are non preferred and should not be used if possible

A.C. systems above 1 kV to 35 kV

Voltage, kV
Series I Series 2
Highest Nominal Highest Nominal
3.6 3.3 3 4.40 4.16
7.2 6.6 6
12 11 10
13.2 12.47
13.97 13.2
14.52 13.8
(17.5) (15)
24 22 20
26.47 24.94
36 33
36.5 34.5
40.5 35

 It is recommended that only one series be used.

A.C. systems above 35 kV to 230 kV

Voltage, kV
Highest Nominal Voltage, V
(52) (45)
7.25 66 69
123 110 115
145 132 138
(170) (150)
245 220 230

Only one series should be used in each country

A.C. systems above 245 kV

Recommended in each geographical group only one of the following be used:

  • 245 kV - 300 kV - 262 kV
  • 362 kV - 420 kV
  • 420 kV 550 kV

 

Highest Voltage, kV
(300)
362
420
550
800
1050
1200


Steven McFadyen's avatar Steven McFadyen

Steven has over twenty five years experience working on some of the largest construction projects. He has a deep technical understanding of electrical engineering and is keen to share this knowledge. About the author

myElectrical Engineering

comments powered by Disqus



Occam's Razor

I was reminded of Occam's Razor while reading a book. It's quite a simple principal of logic which has stood the test of time and is accepted as central...

How to measure power supply quality

If your are ever called out to troubleshoot something on your electrical system, one of the first things consider is the supply voltage. You want to ensure...

Our internet address and Vanity URLs

Visitors who like to type web address rather then click menus may be interested in how our URL structure works.

Tips for a better Low Voltage Protection Discrimination Study

Carrying out a protection system discrimination study is critical to ensure the correct functioning of  the electrical system in the event of faults. ...

Nikola Tesla

Nikola Tesla was born exactly at midnight on July 10, 1856 in the tiny village of Smiljan, Lika in Croatia. In his late teens, Tesla left the village to...

Maxwell's Equations - Introduction

Maxwell's Equations are a set of fundamental relationships, which govern how electric and magnetic fields interact. The equations explain how these fields...

Windows Live Writer and myElectrical

When making adding a Note to our site we have a great online WYSIWYG editor and things are pretty simple.  However, if you prefer you can write, manage...

Hazardous Areas – IEC and NEC/CEC Comparison

Depending where in the world you work, you are likely following one of two standards International Electrotechnical Commission (IEC) National...

Are We Losing Professional Integrity

I have been thinking recently that there appears to be less professional integrity around than when I first started my career in electrical engineering...

Power Factor

Power factor is the ratio between the real power (P in kW) and apparent power (S in kVA) drawn by an electrical load. The reactive power (Q in kVAr)...

Have some knowledge to share

If you have some expert knowledge or experience, why not consider sharing this with our community.  

By writing an electrical note, you will be educating our users and at the same time promoting your expertise within the engineering community.

To get started and understand our policy, you can read our How to Write an Electrical Note