AC Power & Energy

Using AccuLoss^® technology, Measurements International (MI) designs, develops, manufactures and calibrates electrical metrology instruments for the AC power industry. MI is 17025 accredited for both in-house and on-site loss measurement system and component calibration.

The 7010C is a microprocessor-controlled, current comparator–based automated capacitance bridge with metrology capabilities. It measures capacitance, inductance, reactor loss, and AC resistance, and also calibrates MI CTs.

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.

Models 2500A, 2501A, 2502A, and 2503A complete the low-voltage arm of high-voltage capacitive dividers. Based on compensated current comparators, they provide ultra-precise ratio division of high AC voltages down to measurable levels. The output connects to an AC/DC transfer device for precision voltage measurements or to a precision power analyzer such as the MI model 2020A for direct transformer and reactor loss measurements under IEEE-488 control.

MI’s 7070A series of fully automated AC ratio bridges were developed for fast and accurate measurements of instrument transformer errors. Integrate the 7070A into complex systems to calibrate voltage transformers up to 800 kV and current transformers to 10,000 A. The 7070A sets new measurement standards in instrument transformers calibration.

Upgrade your 2010A wattmeter with a choice: 2020A wattmeter, or the 2020A-P power analyzer. The 2020A and 2020A-P are based on the digital sampling principle. Both provide reliable, accurate traceability to NMIs around the world. Measure quickly, accurately and automatically, regardless of distorted waveforms or low power factor conditions.

Precision transconductance and transimpedance amplifiers for AC power metrology, current transformer calibration, and SI-traceable electrical measurements.