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DC Immune Current Transformers

Application General Features

• Accuracy DC Immune Electronic Energy Meter • Meeting International Standard IEC 61869-2
conforming to IEC 62053-21 (fomer IEC 61036)
• Excellent Linearity & Precision
• Smart Grid Application
• Steady Phase Shift & No Saturation in DC factor
• Accurate Measurement under DC Components
• Stability from External Magnetic Field
• Accurate AC Measurement with Anti Tampering
• Possible to adopt the immunity of DC Magnets.
• Immunity to DC Magnets for option
• High Potential Voltage upto 4.0 kV per min.
• RoHS Compliant

I. Supreme AC & DC Measurement

Model & Specification
f=50Hz, Rb=1 n, PF=1.0, unit : percent / minute
Current DCR(Ω) Ip=0.25A Ip=5A
Model No Imax Idc
Ratio 土6% Ratio Error Phase Error Ratio Error Phase Error
TD35VC
TD35L 2500 : 1 72A 40A 107Ω -0.3±0.5% 420'士30' -0.3士0.5% 417'±30'
TD40V 2500 : 1 80A 40A 98Ω -0.3土0.4% 250'土20' -0.3土0.4% 250’土20'
TD40L
TD61L 2500 : 1 72A 60A 61Ω -0.3土0.5% 240'土25' -0.3土0.5% 240'土25'
TD120V 2500 : 1 180A 120A 51Ω -0.25土 200'土25' -0.25土 200'土25'
TD120L 0.25% 0.25%
TD77V 2500 : 1 72A 40A 85Ω ±0.5% 230'土20' ±0.5% 220'土20'
TD77L
TD71V 2500 : 1 100A 60A 81Ω ±0.8% 310'土10' ±0.8% 310'土10'
TD71L
-0.03± -0.03±
TD41L 2500 : 1 72A 40A 149Ω 7'士5' 5'士5'
0.07% 0.07%
-0.03± -0.03±
TD121L 2500 : 1 120A 120A 85Ω 7'士5' 5'士5'
0.07% 0.07%
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