The GREWIN TAD series of current transformers for electronic watthour meters with DC-tolerance are designed for applications where AC current signals or half wave rectified DC current signals must be transformed accurately into a lower current signal appropriate for micro-processor based circuits. A new TA model can be designed and manufactured to meet the specific design challenges of the client's specific application. The following models are only a small sampling of the many different products which have been and are currently being manufactured.
GREWIN MINI PRECISION CURRENT RANSFORMER
Specialties:
1,The printing circuitiy board is direct-jionting fixed,design is reasonable.;
2,Small bulk,high precision;whole occlude,The machinery and bears the environment performance to be good,strong ability in closing off the pressure and on the safe side..
Using terms:
1,Environment temperature:-40°C~+85°C;
2,Relative humidity:when temperature is 40°C ≤90%.
Working frequency bound:20Hz~20KHz.
Features
Center hole-through, easy installation,on
the safe side.
Metal casing,better capacity of resisting
outside surroundings.
High-sensitivity/accuracy,good linearity.
Two series for selection: passive and active
Applications
Used in high voltage electric power equipment
insulation monitoring plant, which is stalled in
transformers station.Provide exact measure-
ment for mA leakage current of high voltage
power equipment, such as transformers
sleeve, current transformers
Specifications
Frequency:50Hz
Rated current:10mA,20mA,30mA
Measuring range:0.5~700mA
Output signal:mV/mA
Amplitude error:±0.1%
Phase error:±1'
Environmental temperature:-30ºC~+75ºC
Influence on phase error by temperature
change is<1'
Diameter of primary center hole:Φ13mm,
25mm, 40mm, 50mm
Contact info :
Tianjin Grewin Technology Co., Ltd
Contact:Victor Dong
Website: http://transformer.en.made-in-china.com/
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