Voltage Levels to IEC 60038

By Steven McFadyen on January 16th, 2013

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

Voltage, Low Voltage, High Voltage, Medium Voltage, Standards, IEC Standards

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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

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