Current transformer - measuring current transformer

Totally Enclosed Protect Feature and Three-phase Phase low rpm ac electric motor
Specifications
power range: 0.12-18.5 kW 
Centre height of frame: 63-160 mm 
Rated Voltage: 380 V 
Rated Frequency: 50Hz or 60Hz 
Main cooperate with measuring instrument, measuring current transformer in single phase motor line under normal working state, which is used to measure current, voltage, power, etc. Measuring the micro current transformer main requirements: 1, insulation and reliable, and 2, the measuring accuracy of high enough, 3, when measured circuit malfunction appeared high current transformer should be in the proper range of saturation (e.g., 500% of the rated current) to protect the measuring instrument. The current transformer. With current transformer and relay device coordination, mainly occurred in line short circuit overload acmotor2.blogspot.com failure, such as to provide signal to relay device to cut off the fault circuit, to protect the security of the power supply system. Protection with micro current transformer entirely different working conditions and the measurement of transformer, transformer protection is just in several times more than normal current current when to begin to work effectively. Protection of transformer main requirements: 1, insulation and reliable, and 2, enough accuracy limit factor, 3, magnet generator enough thermal stability and dynamic stability.