7202A, 7203A Precision Current Transformers

• Precision CT calibration reference standard, replaces MI Model 7020
• Currents to 10,000 A
• Portable: carrying handle for smaller CTs; wheels on heavier CTs
• Passive or electronically-aided compensation
• Large division ratio (switchable from 1000:1 to 2000:1, lower on smaller CTs)
• Accuracy:
  • Magnitude: < 0.0015%
  • Phase: < 0.0015%

The 72XX Series of precision current transformers embodies MI's longstanding commitment to excellence in precision measurement. Designed for accurate current measurement and power grid monitoring, these transformers are engineered to meet rigorous technical standards and design practices, ensuring safe, reliable performance across critical electrical applications.

Wide input current range

• Extremely high linearity allows to cover a wide range of primary current values with the same CT.

Two-stage current comparator technology

• Units with comparator output can be used either as precision CT or as a current comparator in more complex systems.

Current division accuracy down to 15 parts in 10⁶

• Satisfies most laboratory requirements for scaling down AC currents.

Negligible long-term drift

• Permits users to extend the calibration period, and have confidence in measurements for 3-5 years.

Electronically Aided Output with Compensated Input

• The 7201ACT has multi-ratio compensated input for easy cascading, achieving an overall division ratio of up to 1,000,000:1.