What is Current Transformer?
The function of current transformers(sensor) is control and monitoring in electrical equipments and devices, in heavy current and power electronics.For this task , Current transformer with high turns ratios are used . The current will be converted into smaller values of some mA.
（1）Amo Current Transformer CT-Series without DC-Tolerance (AST-Series)
Application：
1、Very Good accuracy power sensor and instruments
2、0.2~1.0 class power meters
3、All kinds of equipment needed current sensing with high accuracy and low ratio error
Features：
1、Very small and high linear phase and amplitude error
2、Easily compensable phase error
3、Very low losses & Low temperature dependence, RoHS compliant
（2）Amo Current Transformer CT-Series with DC-Tolerance (ASD & ASM-Series)
Features：
1、Excellent linearity and precision
2、Steady phase shift and No saturation in DC factor
3、Stability from the external magnetic field
4、Negligible small amplitude error, Very low losses
5、RoHS compliant
6、Operating frequency 50 / 60 Hz, transformation ratio 1 : 2500
（3）Amo Current Transformer CT-Series with DC-Tolerance (ASM-Shield Case series)
Features
1、Excellent linearity and precision
2、Steady phase shift and No saturation in DC factor
3、Stability from the external magnetic field
4、Negligible small amplitude error, Very low losses
5、Possible to adopt the permanent magnetic immunity
6、RoHS compliant
7、Operating frequency 50 / 60 Hz, transformation ratio 1 : 2500
