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Potential Transformer Series - Medium Voltage Fuses
Brand: Littelfuse, IncPotential Transformer (PT) fuses are current limiting fuses with high interrupting ratings designed for the protection of potential transformers.
Live parts are available for mounting potential transformer single, double, and triple barrel fuses. Note, all clips are sold in pairs.
Application Note
When applying fuses for the protection of transformers, the magnetizing current inrush must be considered.
The characteristics of the inrush, which can be matched with a fuse’s time-current curve, should be available from the transformer manufacturer.
- Power Transformer Protection
- Potential Transformer Protection
- Motor Controller Back-up Protection
- Fused Switches
- Feeder Circuits
Documentation
Data Sheets
Technical Papers
Time Current Curves
- Potential Transformer Time Current Curve - 1E-5PT-4.8 thru 2E-5PT-4.8 pdf 158 KB
- Potential Transformer Time Current Curve - 1E-6PT-2.75 thru 3E-6PT-2.75, 1E-8PT-2.75 thru 3E-8PT-2.75 pdf 163 KB
- Potential Transformer Time Current Curve - 3E-4PT-.6 thru 10E-4PT-.6 pdf 164 KB
- Potential Transformer Time Current Curve - 500E-11PT-15.5 thru 3E-11PT-15.5, 3E-16PT-15.5 thru 5E-16PT-15.5 pdf 168 KB
- Potential Transformer Time Current Curve - 500E-16PT-25.5 thru 1E-16PT-25.5 pdf 159 KB
- Potential Transformer Time Current Curve - 500E-4PT-2.4 thru 2E-4PT-2.4 pdf 160 KB
- Potential Transformer Time Current Curve - 500E-6PT-5.5 thru 5E-6PT-5.5, 500E-8PT-5.5 thru 10E-8PT-5.5 pdf 172 KB
- Potential Transformer Time Current Curve - 500E-8PT-8.25 thru 1E-8PT-8.25 pdf 165 KB
