Control Power Transformers / Low-Voltage (LV) Voltage Transformers (Potential Transformers)
CPT Series
These low-voltage control transformers, resin-insulated for Class A or Class F insulation, are economical while conforming to UL safety requirements and regulations. Highly resistant to moisture, heat and dust, these control power transformers are suitable for use at highly polluted locations. Some models of this versatile series can be used as voltage transformers (potential transformers) with Class 0.5 or Class 1.0 accuracy according to IEC’s standard for voltage transformers.
About the Product
These control power transformers (CPT), suitable for use with machine tools or industrial equipment, are also referred to as “control transformers” (CTR), "industrial control transformers," or "machine tool transformers." This versatile single-phase transformer, resin-insulated for Class-A or Class-F insulation, can also be installed in low-voltage main panels or motor control panels as an auxiliary power source. This compact and economical product is easy to install.
Some models can serve as voltage transformers (potential transformers), used in conjunction with measuring or monitoring instruments. These voltage transformers have a burden of 500VA (or below) and a Class 0.5 or Class 1.0 accuracy according to IEC’s standard for voltage transformers.
Specifications
- Standard: CNS, IEC or IEEE
- Phase: Single-Phase
- Frequency: 50 Hz
- AC/BIL: 3/- kV
- Insulated with epoxy resin for Class-A or Class-F insulation.
- Conformance with UL safety requirements and regulations.
- Highly resistant to moisture, heat, and dust — appropriate for use at highly polluted locations.
- Both the primary and secondary windings can be connected either in series or parallel to provide or produce different voltages.
- Terminal covers included for protection against electrical shock.
- Other standards and specifications upon request.
Wiring Diagrams
Drawings
Selection Table
* CTR: Control Transformer.
** PT: Potential Transformer (Voltage Transformer)
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CIC Company Profile
Learn about our company: history, strengths, products, global locations, and our Advanced Electricity Lab.
【Product Brochure】Low-Voltage Control Power Transformers and Voltage Transformers, CPT Series
Specifications, wiring diagrams, drawings, and more.
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.
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