Conductive Shield Voltage Transformer (Potential Transformer) for 24 kV 4-Way Switchgear (Also Operation Power Source)
EPF-20FB
This voltage transformer is a single-phase, epoxy-resin-cast medium-voltage potential transformer designed to also function as an operation power source*, specifically paired with 24kV 4-Way Switchgear. It features a high-voltage elbow-type connector on the primary side and includes an internal high-voltage power fuse for protection. The exterior of the voltage transformer is coated with a conductive metal mixture for shielding, and waterproof treatment can be requested for the secondary side. The voltage transformer has a rated burden and accuracy of 600 VA / 3.0 CL.
* Operation power source: In this application, the voltage transformer can also be referred to as a "control power transformer" (CPT), "control transformer" (CTR), "industrial control transformer," or a "machine tool transformer."
About the Product
Specifically designed for 24 kV 4-way switchgear, this medium-voltage single-pole voltage transformer, or potential transformer, features a high-voltage elbow-type connector on the primary side and a built-in high-voltage fuse for protection. Since the exterior of the voltage transformer is coated with a metal conductive mixture for shielding, the necessary distance between the VT (PT) and the panels (or other equipment) is reduced.
Waterproof treatment can be requested for the secondary of the VT. This optional waterproof treatment will allow the VT to continue functioning even if immersed in water below the level of its primary-fuse housing (such as in the case of water accumulation on the street).
Insulated with Araldite® epoxy, this MV voltage transformer (potential transformer) is characterized by excellent water resistance, superior electrical performance, and great reliability, while being lightweight and compact.
Product Features
- According to IEC or IEEE Standard.
- Metal conductive coating replaces traditional metal-box for shielding.
- Compact, space-saving design.
- Waterproof treatment can be requested for the secondary. This will allow the VT (PT) to continue functioning even if immersed in water below the level of its primary-fuse housing.
- Built-in primary fuse can be easily replaced.
Suggested Applications
- Outdoor or indoor electrical distribution panel board.
- Especially ideal for low-lying and frequently flooded distribution boxes, such as 4-Way switchgear.
Specifications
- Standard: IEC (IEEE available)
- Resin-cast (Araldite® epoxy resin)
- Metal conductive coating for shielding
- Primary Voltage Rating: 13200 V (24/√3 kV)
- Secondary Voltage Rating (Dual-Voltage): 220 / 110 V
- Rated Insulation Level: 24 kV
- Frequency: 50 / 60 Hz
- AC / BIL: 50 / 125 KV
- Burden / Accuracy: 600VA / 3.0CL
- Approx. Weight: 43 kg
- Built-in fuse on primary circuit
- Other standards and specifications available
- Download Documents
CIC Company Profile
Learn about our company: history, strengths, products, global locations, and our Advanced Electricity Lab.
【Product Brochure】Voltage Transformer for 24 kV 4-Way Switchgear (Circuit Breaker Operation Power Source), Model: EPF-20FB
Easy-to-print document, containing product description and specifications.
【Product Dimensions】Conductive Shield Voltage Transformer for 24 kV 4-Way Switchgear (Also Operation Power Source), Model: EPF-20FB
Download PDF for basic drawing(s) and dimensions of this product. For more detailed information, please contact CIC.
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.
- Related Products
12 kV & 24 kV Epoxy-Cast Voltage Transformer (Potential Transformer) or Control Power Transformer, as Power Source for Circuit Breaker Operation and Lighting
EPF-20DZ
This voltage transformer, cast with self-extinguishing epoxy resin, is a medium-voltage, indoor-type, single-phase potential transformer for a 12kV or 24kV power system for measuring and monitoring voltage signals. With a continuous output capacity of 4000 VA (max.), it can also serve in a small substation or a switchgear panel as a power source for circuit breaker operation and lighting equipment*.* Power source for circuit breaker operation and lighting equipment: In this application, the voltage transformer can also be referred to as a "control power transformer" (CPT), "control transformer" (CTR), "industrial control transformer," or a "machine tool transformer."
36 kV Metal-Clad Voltage Transformer (Potential Transformer) for Indoor Application
EPF-30SE
Intended for the switchgear panels of a 36 kV power system, this single-pole epoxy-cast voltage transformer (potential transformer) for indoor application is covered with an aluminum box. The grounded aluminum box for shielding reduces the installation space requirement.
Coil Molded Single-Phase Voltage Transformers (Potential Transformers), Indoor Use
EP-3SF/6SF Series
Voltage transformers of the EP-3SF/6SF Series are coil-molded, single-phase, indoor-type, medium-voltage, epoxy-resin-insulated potential transformers suitable for power systems of 7.2kV or below. Made with either a laminated core (Model EP-3SF2) or a cut core (EP-3SF5 & EP-6SFK), the voltage transformer has two power fuses attached to the primary side. Specific models from this series can be used as an auxiliary power source for circuit breaker operation — that is, as a control power transformer (CPT), also referred to as a control transformer (CTR), industrial control transformer, or machine tool transformer.
Voltage Transformers (Potential Transformers) as Circuit Breaker Operation Power Source
EPF-3SF1, EPF-6SF2
Voltage transformers EPF-3SF1 and EPF-6SF2 are medium-voltage, indoor-type potential transformers cast in epoxy resin, commonly installed on switchgear (3.3kV or 6.6kV) to serve as an auxiliary power source* for circuit breaker operation. Positioned atop the switch as an operational power source, these transformers can handle relatively high outputs for short durations. Featuring Class-F heat-resistant insulation material for the coils, each voltage transformer is equipped with two power fuses on the primary side to safeguard against overload and short-circuit currents.* Auxiliary power source: In this application, the voltage transformer may also be referred to as a "control power transformer" (CPT), "control transformer" (CTR), "industrial control transformer," or a "machine tool transformer."
Indoor Low-Voltage Single-Phase Voltage Transformers (Potential Transformers)
S-N Series
Single-phase voltage transformers, or 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. In the latter usage, this product can be referred to as a "control power transformer" (CPT), "control transformer" (CTR), "industrial control transformer," or a "machine tool transformer."
- Related News
08Oct 2024 Focus on Smart Energy: CIC Showcases Power Solutions at Successful Exhibition
Challenge Industrial Co., Ltd. (CIC) successfully showcased a range of power solutions at the “Energy Taiwan 2024” held from October 4 to 6 this year. The well-prepared exhibits included not only a variety of current transformers (CTs), voltage transformers (VTs), bushing current transformers (BCTs), and surge protection devices (SPDs) but also featured the most sought-after Smart Electronic Meters and Energy Management Systems (EMS).
Read More04Sep 2024 CIC Joins Energy Taiwan 2024 to Highlight Smart & Sustainable Energy Solutions
CIC is excited to join Energy Taiwan 2024 at the Taipei Nangang Exhibition Center, Hall 2.
Read More