Medium-Voltage Potential Transformers (3~7.2 kV)
EPF-3SF1, EPF-6SF2
About the Product
Potential transformers EPF-3SF1 and EPF-6SF2 are primarily mounted on switchgear (3.3kV and 6.6kV, respectively) as an auxiliary power source for circuit breaker operation. Compact and of a flatter shape than other models, these potential transformers are mounted on top of the power switch as an operation power source and are compatible with short-interval large output. With Araldite® epoxy resin as insulation, these potential transformers also feature a Class-F heat-resistant insulation material for the coils. Two fuses on the primary side offer protection against overload and short circuit currents. EPF-3SF1 and EPF-6SF2 potential transformers are characterized by a high-quality exterior, excellent moisture resistance, and superior electrical performance.
Specifications
Other standards and specifications available.
| Model | Standard | Phase (ø) | Frequency (Hz) | Primary Voltage (V) | Secondary Voltage (V) | Burden / Accuracy | AC/BIL （kV） | Primary-Side Fuses | Approx. Weight (kg) |
| EPF-3SF1 | IEC | 1 | 50/60 | 3600 3450 3300 | 120 115 110 | 100VA / 1.0CL 200VA / 3.0CL | 10/40 | 2 | 8.5 |
| EPF-6SF2 | IEC | 1 | 50/60 | 7200 6600 4200 | 120 115 110 | 200VA / 1.0CL 500VA / 3.0CL | 20/60 | 2 | 16 |
| 3600 3300 | 10/40 | ||||||||