10/20kV Epoxy-Cast Potential Transformer (Power Source for Circuit Breaker Operation and Lighting)
Medium-Voltage Potential Transformer
About the Product
Single-phase indoor-use potential transformer EPF-20DZ, intended for a 12 or 24 kV power system, is designed for the measuring and monitoring of the voltage signal.
Due to its continuous output capacity of 4000VA (max.), this potential transformer can be used in a small substation or a switchgear panel as a power source for circuit breaker operation and lighting equipment. This setup helps to conserve space and reduce cost.
In addition, the EPF-20DZ potential transformer can be connected to one or two smaller-capacity potential transformers to form a three-phase potential transformer (3ϕ PT). This can be done via a V-V or Y-Y connection.
Cast in self-extinguishing Araldite® epoxy resin, the EPF-20DZ potential transformer is characterized by superior insulation and excellent safety.
- Standard: IEC or IEEE*
- System Voltage: 12 or 24 kV
- Frequency: 50 / 60 Hz
- Power source for circuit breaker operation and lighting
- Option: Forming a three-phase PT through connection with one or two smaller-capacity potential transformers (via a V-V or Y-Y connection)
- No risk of oil leakage
- Includes a fuse on the secondary side
Burden / Accuracy
|AC / BIL|
22 or 11
* Other standards and specifications available.
** This specification comes with an added tap in the secondary winding so as to offer two voltage ratios (22-11 kV).
- Related Products
1-pole potential transformers for 12/24/36 kV power systems. Use with measuring or monitoring instruments, or with protective relays. Optional connector and epoxy housing with a built-in primary fuse. Insulated with Araldite® epoxy.
Widely used for 12~24 kV power systems and insulated with Araldite® epoxy, these potential transformers are characterized by superior moisture resistance and excellent electrical properties. Customizable for different standards and requirements.
Designed for 24kV 4-way switchgear, this MV single-pole potential transformer features a high-voltage elbow-type connector on the primary side and a built-in high-voltage fuse for protection. Exterior coated with a metal conductive mixture for shielding. Secondary side sealed and waterproof. Araldite® epoxy as insulation.
Mounted on switchgear (3.3/6.6 kV) as an auxiliary power source for circuit breaker operation. Insulated with Araldite® epoxy, 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.
Indoor medium-voltage single-phase coil molded potential transformers for power systems ≦ 7.2 kV. Laminated-core & cut-core models. 2 primary-side fuses. Circuit breaker operation power source (EP-6SFK).
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.
Single-phase potential transformers for indoor locations of lower humidity. Class-A insulation material. Used with measuring or monitoring instruments, or as an auxiliary power source in the main panel or motor control panel.
- Download Materials
10/20kV Epoxy-Cast Potential Transformer (Power Source for Circuit Breaker Operation and Lighting) – Model: EPF-20DZ
Easy-to-print document, containing product description, features, and specifications.
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.