NOL-EC voltage transformers of M1 size for voltage classes up to 10 kV are designed for operation in power supply systems with isolated neutral, as well as with neutral grounded through an arc suppression reactor or resistor, in measurement, protection, automation, control, signalling circuits of alternating current of frequency 50 and 60 Hz at electric power plants of all types, including nuclear power plants, as well as at electric substations of power systems, industrial and agricultural facilities as part of complete switchgears, chambers.
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