Voltage Levels to IEC 60038
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 |