Voltage and Continuous, Short-Time, and Fault-Closing Ratings
- Mastertrol Mark V Installation Manual Pdf
- Mastertrol Mark V Installation Manual Transfer Switch
- Mastertrol Mark Ii
- Mastertrol Mark V Installation Manuals
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| kV | Amperes, RMS | |||||
|---|---|---|---|---|---|---|
| Nom. | Max | BIL | Cont. | Short-Time | Fault-Closing, Duty-Cycle, One-Time | |
| Mom. | 3-Second | |||||
| 34.5 | 38 | 200 | 1200 | 61 000 | 40 000 | 30 000 |
| 46 | 48.3 | 250 | 1200 | 61 000 | 40 000 | 30 000 |
| 69 | 72.5 | 350 | 1200 | 61 000 | 40 000 | 30 000 |
| 115 | 121 | 550 | 1200 | 61 000 | 40 000 | 30 000 |
| 138 | 145 | 650 | 1200 | 61 000 | 40 000 | 30 000 |
| 1600♥ | 70 000 | 43 750 | 40 000 | |||
| 2000♥ | 80 000 | 50 000 | 40 000 | |||
| 161 | 169 | 750 | 1200 | 61 000 | 40 000 | 30 000 |
| 230 | 242 | 900 | 1600 | 70 000 | 43 750 | 40 000 |
| 2000 | 80 000 | 50 000 | 40 000 | |||
| 345 | 362 | 1300 | 1600 | 70 000 | 43 750 | 40 000 |
| 2000 | 80 000 | 50 000 | 40 000 | |||
♥ 1600 and 2000 amperes continuous available in Three-Pole Center-Break style only.
Interrupting Current Ratings for Transformer Switching and Protection
Mastertrol Mark V Installation Manual Pdf
| Class | Qualifications | Maximum Amperes, Interrupting RMS Symmetrical |
|---|---|---|
| Parallel Switching | Max 60-hertz recovery voltage: 90 kV RMS and 150 kV RMS | 1200/1600/2000♥ |
| Load Dropping and Magnetizing Current Switching | Transformers connected to solidly grounded-wye on the primary (Circuit-Switcher) side and delta on the secondary side | 1200/1600/2000♥♣ |
| All other connections of transformers | 1200/1600/2000♥♣ | |
| Fault Interrupting | Primary faults with the total connected length of all lines on the source side of the Circuit-Switcher not less than ♠. | 7000 or 8000 |
| Primary faults with the total connected length of all lines on the source side of the Circuit-Switcher less than ♠. | 4000 (3000A for 115-kV single-gap Circuit-Switchers) | |
| Secondary faults — all other connections of transformers | 4000 (3000A for 115-kV single-gap Circuit-Switchers) | |
| Internal faults — see both primary and secondary faults, above | ||
♥ Depending on continuous rating of Circuit-Switcher.
♣ Will switch magnetizing currents associated with such loads.
♠ Total connected length of all ovehead lines (in all directions) including any number of feeders connected to source-side substations as indicated in the table below:
| System Voltage, kV | 34.5 thru 69 | 115 and 138 | 161 | 230 | 345 |
|---|---|---|---|---|---|
| Total Length, Miles | 7 | 15 | 20 | 25 | 40 |
Interrupting Current Ratings for Line Switching and Protection
Mastertrol Mark V Installation Manual Transfer Switch
| Class | Qualifications | Maximum Amperes, Interrupting RMS Symmetrical |
|---|---|---|
| Load Splitting (Parallel or Loop Switching) | Max 60-hertz recovery voltage: 90 kV RMS and 150 kV RMS | 1200/1600/2000♥ |
| Load Dropping | Circuits with all load-side transformers connected solidly grounded-wye on the primary (Circuit-Switcher) side and delta on the secondary side | 1200/1600/2000♥ |
| Circuits with all load-side transformers connected other than as described above. | 1200/1600/2000♥ | |
| Line Dropping | Maximum length of line: 300 miles. | |
| Fault Interrupting | Line or bus faults with the total connected length of all lines on the source side of the Circuit-Switcher not less than ♠. | 7000 or 8000 |
| Line or bus faults with the total connected length of all lines on the source side of the Circuit-Switcher less than ♠. | 4000 (3000A for 115-kV single-gap Circuit-Switchers) | |
♥ Depending on continuous rating of Circuit-Switcher.
♠ Total connected length of all ovehead lines (in all directions) including any number of feeders connected to source-side substations as indicated in the table below:
| System Voltage, kV | 34.5 thru 69 | 115 and 138 | 161 | 230 | 345 |
|---|---|---|---|---|---|
| Total Length, Miles | 7 | 15 | 20 | 25 | 40 |
Interrupting Current Ratings for Cable Switching and Protection
| Class | Qualifications | Maximum Amperes, Interrupting RMS Symmetrical |
|---|---|---|
| Load Splitting (Parallel or Loop Switching) | Max 60-hertz recovery voltage: 90 kV RMS and 150 kV RMS | 1200/1600/2000♥ |
| Load Dropping | Circuits with all load-side transformers connected solidly grounded-wye on the primary (Circuit-Switcher) side and delta on the secondary side | 1200/1600/2000♥ |
| Circuits with all load-side transformers connected other than as described above. | 1200/1600/2000♥ | |
| Cable Dropping (Charging Current) | Shielded and Unshielded Cable | 550 |
| Fault Interrupting | Cable or bus faults with the total connected length of all lines on the source side of the Circuit-Switcher not less than ♠. | 7000 or 8000 |
| Cable or bus faults with the total connected length of all lines on the source side of the Circuit-Switcher less than ♠. | 4000 (3000A for 115-kV single-gap Circuit-Switchers) |
♥ Depending on continuous rating of Circuit-Switcher.
♠ Total connected length of all ovehead lines (in all directions) including any number of feeders connected to source-side substations as indicated in the table below:
| System Voltage, kV | 34.5 thru 69 | 115 and 138 | 161 | 230 | 345 |
|---|---|---|---|---|---|
| Total Length, Miles | 7 | 15 | 20 | 25 | 40 |
Interrupting Current Ratings for Shunt Capacitor Bank Switching and Protection
| Class | Qualifications | Maximum Amperes, Interrupting RMS Symmetrical | |
|---|---|---|---|
| Bank Current Switching | Grounded capacitor bank | Applications on solidly grounded systems through 69 kV | 1000 |
| All other applications | 550 | ||
| Ungrounded capacitor bank | 550 | ||
| Fault Interrupting | Primary faults with the total connected length of all lines on the source side of the Circuit-Switcher not less than ♠. | 7000 or 8000 | |
| Primary faults with the total connected length of all lines on the source side of the Circuit-Switcher less than ♠. | 4000 (3000A for 115-kV single-gap Circuit-Switchers) | ||
♠ Total connected length of all ovehead lines (in all directions) including any number of feeders connected to source-side substations as indicated in the table below:
| System Voltage, kV | 34.5 thru 69 | 115 and 138 | 161 | 230 | 345 |
|---|---|---|---|---|---|
| Total Length, Miles | 7 | 15 | 20 | 25 | 40 |
Interrupting Current Ratings for Reactor Switching and Protection
| Class | Qualifications | Maximum Amperes, Interrupting RMS Symmetrical | |
|---|---|---|---|
| Series Reactor Switching | Refer to the nearest S&C Sales Office. | ||
| Shunt Reactor Switching and Protection (Line-Connected or Tertiary Connected Reactors) | Reactor Current Switching | Reactor wye-connected with solidly grounded neutral | 1000 |
| Reactor delta-connected, or wye-connected with ungrounded neutral | 1000 | ||
| Fault Interrupting | Oil-insulated reactors | 2800 | |
| Air-insulated reactors | 2000 | ||
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