Trayer Solid Dielectric Ratings for the Unit/System Voltage |
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| Nominal Voltage (Series) |
15kV |
25kV |
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| Maximum Design Voltage |
15.5kV |
27kV |
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| Device |
Load Break |
Vacuum Fault |
Load Break |
Vacuum Fault |
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| BIL Phase-to-Phase, Phase-to-Ground |
110kV |
110kV |
110kV |
110kV |
125kV |
125kV |
125kV |
125kV |
| BIL Across Open Contacts |
110kV |
110kV |
110kV |
110kV |
125kV |
125kV |
125kV |
125kV |
| One Minute Withstand (60Hz) |
34kV |
34kV |
34kV |
34kV |
40kV |
40kV |
40kV |
40kV |
| Continuous Current |
630A |
630A |
630A |
630A |
630A |
630A |
630A |
630A |
| Load Switching |
630A |
630A |
630A |
630A |
630A |
630A |
630A |
630A |
| Peak Current |
41.6kA |
52kA |
41.6kA |
52kA |
41.6kA |
52kA |
41.6kA |
52kA |
| Load Break Operations at Full Load |
10,000 |
10,000 |
10,000 |
8,000 |
10,000 |
10,000 |
8,000 |
8,000 |
| Maximum Emergency Three-Time Interrupting |
2000A |
2000A |
N/A |
N/A |
2000A |
2000A |
N/A |
N/A |
| Number of Fault Interruptions at 16kA |
N/A |
N/A |
65 |
65 |
N/A |
N/A |
65 |
65 |
| Short-time Withstand Current (1s), Short Circuit Current, and Fault-making Current 600A Symmetrical |
16kA |
20kA |
16kA |
20kA |
16kA |
20kA |
16kA |
20kA |
| Short-time Withstand Current (1s), Short Circuit Current, and Fault-making Current 600A Asymmetrical |
25.6kA |
32kA |
25.6kA |
32kA |
25.6kA |
32kA |
25.6kA |
32kA |
