Potential Transformers (Circuit Breaker Operation Power Source)

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.

ModelStandardPhase
(ø)
Frequency
(Hz)
Primary Voltage
(V)
Secondary Voltage
(V)
Burden / AccuracyAC/BIL
(kV)
Primary-Side FusesApprox. Weight
(kg)
EPF-3SF1IEC150/603600
3450
3300
120
115
110
100VA / 1.0CL
200VA / 3.0CL
10/4028.5
EPF-6SF2IEC150/607200
6600
4200
120
115
110
200VA / 1.0CL
500VA / 3.0CL
20/60216
3600
3300
10/40