Internal MV circuits: Difference between revisions
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Internal MV circuits are dedicated to the supply of the secondary MV/LV substations dispersed in the installation. They are three typical principles commonly used for this purpose | Internal MV circuits are dedicated to the supply of the secondary MV/LV substations dispersed in the installation. They are three typical principles commonly used for this purpose {{FigRef|D11}}: | ||
* Single feeder | * Single feeder | ||
* Dual feeder | * Dual feeder | ||
* Open ring | * Open ring | ||
{{FigImage|DB422127_EN|svg|D11|Single feeder, Dual feeder, Open ring}} | |||
Comparison of these three typical principles of internal distribution is given {{FigRef|D12}}. | Comparison of these three typical principles of internal distribution is given {{FigRef|D12}}. | ||
{| | {{TableStart|Tab1084|3col}} | ||
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| Short interruption acceptable | | Short interruption acceptable | ||
| Short interruption not acceptable | | Short interruption not acceptable | ||
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{{TableEnd|Tab1084|D12|Comparison of the typical internal circuits}} | |||
[[ru:Конфигурация схемы высокого напряжения]] | [[ru:Конфигурация схемы высокого напряжения]] | ||
[[zh:中压回路的配置]] | [[zh:中压回路的配置]] | ||
Revision as of 01:12, 21 November 2016
Internal MV circuits are dedicated to the supply of the secondary MV/LV substations dispersed in the installation. They are three typical principles commonly used for this purpose Fig. D11:
- Single feeder
- Dual feeder
- Open ring
Fig. D11 – Single feeder, Dual feeder, Open ring
Comparison of these three typical principles of internal distribution is given Fig. D12.
| MV circuit configuration | |||
|---|---|---|---|
| Characteristic to consider | Single feeder | Open ring | Dual feeder |
| Site topology | Any | Single or several buildings | Single or several buildings |
| Power demand | Any | > 1250kVA | > 2500kVA |
| Disturbance sensitivity | Long interruption acceptable | Short interruption acceptable | Short interruption not acceptable |
Fig. D12 – Comparison of the typical internal circuits
