Precision Micro Current Transformer

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This precision micro current transformer has excellent insulation and voltage isolation properties. The insulation resistance is 100MΩ/min when 500VDC is applied, and the dielectric strength is 3000V/2mA/1min at 50Hz. Most of the cores adopt new magnetic materials including nanocrystalline and Fe-Ni alloy, and these materials possess low loss and high initial permeability. Our product is very accurate, and the ratio error is less than 0.1% while phase error is less than 5′. In addition, the output end can be used as pilot wire or inserted to PCB directly.

This current transformer is applicable in many fields. For example, servomotor, electrical transducer, relay protection, power transducer, dynamical system, electronic electricity meter, precision power meter, data sampling for current and voltage, electricity monitoring equipment, intelligent electric control cabinet, and various digital electrical measuring instruments.

Technical Parameters

Model Electrical Properties Overall Dimensions (mm)
Primary Current (A) Secondary Current (mA) Accuracy (%) Burden Resistance (Ω) Frequency (Hz) A B C D E F G
CT011 5-10 2-5 0.1-3 5-50 50-400 16.9 5 9.1 16.9 12 5 0.6
CT021 5-15 2-10 5-50 18 5 10 19 12 5 0.6
CT022 5-15 2-10 5-50 18.2 3.8 10 19.2 12.5 5 0.6
CT023 5-15 2-10 5-50 18.2 3.6 10.2 19.2 12 5 0.6
CT031 5-15 2-10 5-50 18.8 5.5 10 19.5 15.2 6.2 0.8
CT032 20-100 4-40 10-300 30.5 8.2 17.6 30.63 23.8 13.8 1
CT041 5-15 2-10 5-50 16.8 4.5 9.5 19.72 12.7 5 0.8
CT051 5-20 2-20 5-200 19 7 11 22 12 5 0.8
CT052 5-20 2-20 5-200 18.6 5 18.2 19.8 13 11 16.7
CT053 10-80 4-32 10-200 24 5 21.8 25 20 10 20
CT061 5-15 2-10 5-100 17 4.5 16 17 11.5 14 12
CT062 5-20 2-20 5-200 18.4 20.2 17.5 5 11 13 16.5
CT063 5-20 2-20 5-200 19.5 21 18.8 5 11.2 13.2 16
CT064 10-80 4-32 10-200 24.6 8 21.3 25.8 20 10 20
CT065 10-80 4-32 10-200 26.5 26.5 19.8 6 10 19.3 20.8
CT066 10-80 4-32 10-200 27.5 27.5 20.2 4.5 10 20 19.6
CT071 5-30 5-20 5-100 23 6.6 8.6 24.5 15 5 1
CT081 5-50 2-20 10-200 23.8 6 14.7 24.2 20 5 0.8
CT091 0.5-5 1-10 5-100 27 18 27 19.6 14.6 0.8
CT092 0.5-10 1-10 10-200 30 30 26.1 19.5 19.5 1
CT101 5-50 2-20 5-200 23.5 6.8 11 25 15.2 19.1 10
CT102 10-80 4-32 10-300 26 8.9 17 28.1 15.2 19.1 15.5
CT103 20-120 8-48 10-300 37.5 13 14 39 25.2 33 13
CT104 100-400 40-200 20-400 49.1 18.4 19.9 55 29.8 37.4 19
CT105 10-80 4-32 10-300 29.1 5 16.3 26 25 10 0.8
CT106 5-50 2-20 5-200 22.9 7.4 12.7 24.5 15 18.8 11
CT107 20-100 4-40 10-300 30 6.4 17.5 30.8 23.7 19.8 13.8
CT111 10-80 4-32 10-300 25.5 8.8 17.3 28.8 3 5 0.8
CT112 20-100 4-40 10-300 30.5 8 17.2 31.4 2.1 5 0.8
CT121 20-100 4-40 10-300 30 8 19.7 34 19.6 23.6 9.6
CT131 50-200 10-100 10-300 48.6 31.3 14.3
CT132 100-400 10-200 10-300 57.1 37.2 18.2
CT133 200-600 20-500 20-500 110 69.3 42.9
CT141 50-200 10-200 20-400 35 18 23.2
CT142 100-300 40-200 20-400 41.5 17 18.2 49
CT143 200-400 50-200 20-400 47.4 19.5 17 54.5
CT144 200-500 50-200 20-400 50 30 17 53.7 23.5
CT151 300-600 50-200 20-400 58.2 30.3 19.2 59.2
CT161 20-100 8-40 10-300 30.2 11.7 20.1 30.2 43.5 37.3 14.5
CT162 40-200 10-50 20-300 38 12.6 23 40 54 42.5 29.2
CT163 100-400 40-200 20-400 44.7 19.7 24 45.1 57 52.5 19
CT171 100-400 40-200 20-400 47 20.1 15.3 49.4 55.1 46
CT172 100-400 40-200 20-400 45.2 19.8 24.8 52.6 37.8
CT173. 200-500 50-300 20-500 54.5 30 24.5 77.8 61.5 54.8 6
CT174 300-600 50-400 20-500 69.1 40.2 19.5 69.1 88.7 79.5
CT175 200-500 50-300 20-500 59.3 37 45.2 63 52 37 46.5
CT181 50-200 20-200 10-100 49.8 18.2 28.2 52.4 36 6.4 0.8
CT182 100-400 20-200 10-100 69.9 75.6 29.9 25.3 10.9 42 6.5

We can provide customer with precision micro current transformers in different shapes. This product is made of energy conservation materials, and the good stability, high permeability and pretty low saturation flux density ensure the measuring accuracy. Our product is sensitive and resistant to interference, and it is mainly applied for the purpose of measurement and protection. The high flame retardant rating makes it hard to melt or catch fire, and safe operation is achieved. Meanwhile, this current transformer has small volume and light weight, and it is suitable for high density installation. Based on the advantages above, our product is widely used in ampere meter, measuring and controlling device, instrument in the electric power system, etc.

We are a professional precision micro current transformer manufacturer and supplier in China. In addition to transformer, we also offer silicon steel core, amorphous / nanocrystalline core, amorphous metal, and more.

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