Industrial BH-0.66 500 5A Primary 0.66KV 50-60Hz 1T 800 5 Current Transformer

BH-0.66 I Type Current Transformer is a low-voltage instrument transformer with a 5 A secondary rating, designed for precise current measurement in electrical distribution panels. It uses a 1-turn primary (1T) conductor through its window and is rated for up to 660 V (0.66 kV) on the primary side, with operation at 50 or 60 Hz. The transformer is built to IEC 60044-1 standards and is suitable for connection to measurement instruments such as ammeters, watt-hour meters, measurement units, and control relays. Installation can be done on a busbar or on a plate using standard mounting methods. The device supports an instrument security factor (FS) of 10 and operates in environments from -5°C to +40°C with relative humidity below 80%. This BH-0.66 family variant is commonly used in low-voltage metering, substation monitoring, and energy management where a reliable, single-turn primary current transformer is required to step down higher currents to a safe 5 A output for metering equipment. The 0.66 kV insulation rating and 50/60 Hz compatibility make it suitable for integration into standard energy monitoring and protection schemes in commercial and industrial facilities.