This series of transformers has two secondary windings. The first (1S1, 1S2) is used for ammeter indication, with a rated current of AC 5A or AC 1A; the second (2S1, 2S2) is used for remote telemetry and can be used with the ARTU-M32 telemetry unit or ARD3 motor protection relay, with a rated current of AC 20mA. The dual-winding current transformer is linear up to 8 times the rated current, and even at 8 times, the error of the dual-winding current transformer is guaranteed within 0.2-0.5%.
Applications
For motor protection circuits
Ordering example
Specific model: AKH-0.66/S S-40I 500/5A/20mA
Technical requirements: rated current ratio 500A/5A/20mA; accuracy class 0.5/0.2; 1 primary turn; inner hole diameter φ40mm.
Communication protocol: none
Auxiliary power supply: none
Brand: Acrel (Jiangsu Acrel Electrical Manufacturing Co., Ltd.)
