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Multi-Harmonics
/ High Frequency Monitoring CTs

Inquiry

The purpose is to measure multi-harmonics from fundamental frequency. The harmonics is the multiple of fundamental and the measurement of the harmonics means reading the total current even derived from varieties of distortion. Taehwatrans CTs cover up to 130th harmonics in the customized models. High frequency monitoring CTs are used in the applications, including Arc plasma, inverter and supersonic welding machine, IGBT output sensing, which require to read in the frequency bandwidth of from 20 kHz to 100 kHz and in high current amplitude with minimal loss. Another benefit of Taehwatrans multi-harmonics / high frequency monitoring CTs is compact size to be PCB design friendly.

Multi-Harmonics and High Frequency Monitoring CTs Features Image

Application

- High-end electricity meters to read the whole energy consumption including harmonics
- Prestige electricity energy meters
- Arc plasma power supply
- Inverter & supersonic welding machines
- IGBT Control


Features

- Compliant to IEC 61869-2
- Accurate measurement and control up to 100kHz
- Compact and minimal phase shift
- Excellent accuracy & minimal loss
- UL Recognized
- RoHS compliant


Electrical Property & Dimension

Multi-Harmonics Dimension

Specification Spec
Model NO Current Ratio Amplitude Error(%) Phase Shift (min) DCR(Ω) Imax Dimensions(mm)
0.25A 5A 0.25A 5A (±6%) Window Width Height Thickness
TD35V/L 5A / 2mA -0.03±0.05 -0.03±0.03 420'±30' 417'±30' 107 72A 6.8 23.5 25.0 11.0
TD61L 5A / 2mA -0.03±0.05 -0.03±0.03 250'±20' 250'±20' 61 130A 8.0 31.5 30.5 14.0
TD120V/L 5A / 2mA -0.25±0.25 -0.25±0.25 200'±25' 200'±25' 51 180A 12.9 41.3 37.5 14.0

* V : PCB Mountable
* L : Lead Wire

High Frequency Monitoring CTs Dimension

Specification Spec
Model NO Current Ratio DCR(Ω) Rated Current Imax Phase Shift @ 1V Ratio Error @ 1V Self Resonant Frequency
(±6%) 10kHz 100kHz 10kHz 100kHz
TF68V/L 100:1 1.1 5A 5A 1.5±1.5' 0.5±0.5' -0.3±0.7% -0.3±0.7% 190kHz
TF77V/L 300:1 2.95 50A 55A 5±3' 0.5±0.5' -0.3±0.7% -0.3±0.7% 110kHz
TF120V/L 300:1 2.98 50A 70A 4±3' 0.5±0.5' -0.3±0.7% -0.3±0.7% 120kHz

* V : PCB Mountable
* L : Lead Wire