The company's line of Instrumentation Grade Electrical Current Transformers are available in either Commercial or ANSI Metering Class. The commercial class transformers are lower cost and well-suited for current monitoring applications. The ANSI metering class transformers are higher-cost units intended for power monitoring applications where high accuracy and minimum phase angle error are required. Nine different window openings and eight different mounting styles along with numerous secondary ratios are available to meet most applications. This short form catalog shows an overview of the company's most popular 5 amp secondary transformers. Contact factory for different sizes or unique electrical requirements. Frequencyis 50-400 Hz and insulation is 0.6 kV, BIL 10 kV Full Wave.