Indoor Low-Voltage Single-Phase Potential Transformers (Resin Insulated)
EP-1S Series
Auxiliary power source for circuit breaker operation (select models). Featuring a resin-insulated coil and suited for humid locations, this indoor low-voltage potential transformer has excellent moisture resistance and high insulation.
Circuit Breaker Operation Power Source (Select Models)
About the Product
Each EP-1S Series single-phase potential transformer features a resin-insulated coil and is fixed on supporting metal pieces on the front and back sides. Select models of the EP-1S Series can be used as an auxiliary power source for circuit breaker operation. All models, with their excellent moisture resistance and high insulation, are well-suited for humid locations. These indoor low-voltage potential transformers are furthermore characterized by great safety and a high-quality exterior.
Product Features
- Standard: IEC or IEEE
- Resin-insulated
- Indoor applications
- Well-suited to humid environments
- Burden: ≦ 500VA (Models: EP-1S1A ~ EP-1S6A)
- Models that can be used as an auxiliary power source for circuit breaker operation have a burden rating of up to 5000VA
Selection Table*
Model | Phase (ø) | Frequency (Hz) | Primary Voltage (V) | Secondary Voltage (V) | Burden / Accuracy | AC/BIL | Approx. Weight (kg) | Thermal Burden (kVA) |
EP-1S1A | 1 | 60 or 50 | 220〜600 | 110〜220 | 50(10)VA/3.0(1.0) | 3/- kV | 2 | - |
EP-1S2A | 100(35)VA/3.0(1.0) | 3 | - | |||||
EP-1S3A | 50(25)VA/1.0(0.5) | 4 | - | |||||
EP-1S4A | 200(100)VA/3.0(1.0) | 5 | - | |||||
EP-1S5A | 300(50)VA/1.0(0.5) | 8 | - | |||||
EP-1S6A | 500(200)VA/1.0(0.5) | 10 | - | |||||
EP-1S7A | **1000VA | 15 | 1kVA | |||||
EP-1S8A | **1500VA | 17 | 1.5kVA | |||||
EP-1S9A | **2000VA | 25 | 2kVA | |||||
EP-1S10A | **3000VA | 32 | 3kVA | |||||
EP-1S11A | **5000VA | 46 | 5kVA |
* Other standards and specifications available.
** If burden rating ≥ 1000VA, the PT can be used as an auxiliary power source for circuit breaker operation (accuracy N/A)
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- Download Materials
Indoor Low-Voltage Single-Phase Potential Transformers (EP-1S Series)
Easy-to-print document, containing product description, specifications, and a selection table.
CT & PT Selection Guide: How to Choose a Current Transformer or Potential Transformer
How to select, based on application and power system attributes, the primary and secondary currents, burden, accuracy, rated frequency, type (indoor vs. outdoor), insulation material, etc.
