Vanguard’s EZCT series of current transformer testers are designed to be rugged and portable, ideal for industrial and field applications. They can perform the CT excitation, polarity and ratio tests. These testers allow you to test current transformers in their field-mounted configuration. This reduces the need to remove the CT from the host electrical component.
Current transformers are a commonly used device found in metering and protective relay applications for the electrical power industry. The purpose of these devices is to scale large primary currents to a smaller, easy to measure, secondary current. The device also isolates the measuring and recording instruments. Current transformers (CT) together with voltage transformers (VT) or potential transformers (PT) are known as instrument transformers.
Rugged and portable, the Vanguard EZCTs are microprocessor-based, current-transformer test sets with the ability to perform current transformer (CT) excitation, CT current-ratio, and winding polarity tests.