FIELD: transport.
SUBSTANCE: invention relates to electrified railway transport and may be used in municipal electric transport facilities, e.g. in power supply of traction motors and etc. Proposed invention consists in that current carrying wire temperature is measured, as well as ambient temperature and wind speed to determine wire cross section and calculate heat transfer factor by protected formula. Invention protects expressions for determining perimetre of twisted and shaped wires.
EFFECT: higher accuracy of wire heat transfer factor determination, expanded applications.
6 cl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD TO DETERMINE HEAT TRANSFER COEFFICIENT FOR A WIRE IN POWER TRANSMISSION LINE | 1991 |
|
RU2022826C1 |
| DEVICE FOR PROTECTING WIRES OF ELECTRIC NETWORK AGAINST OVERHEAT | 1991 |
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|
RU2653934C1 |
| ADAPTIVE CURRENT RELAY | 1992 |
|
RU2024142C1 |
| 0 |
|
SU1777196A1 | |
| 0 |
|
SU1778852A1 | |
| OVERLOAD RELAY | 0 |
|
SU1772858A1 |
| METHOD OF PROTECTION OF WIRES OF ELECTRIC POWER NETWORK AGAINST OVERHEATING | 0 |
|
SU1786585A1 |
| WIRE FOR OVERHEAD POWER TRANSMISSION LINES | 2016 |
|
RU2631421C1 |
| METHOD OF AND DEVICE FOR OVERLOAD PROTECTION OF RAILWAY CONTACT SYSTEM | 1992 |
|
RU2020681C1 |
