Micro Potential Transformer

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Our micro potential transformer has two types which are current type and voltage-alternating type, and they share some common advantages. They both adopt epoxy resin molding encapsulation, and the appearance is beautiful and totally closed. These two types feature small size, light weight, high linearity and accuracy, PCB installation mode, excellent voltage isolation ability as well as good insulation and mechanical properties. In addition, the integration and installation are very convenient, and our products can work under different conditions. On the other hand, most of the cores in current type are made of Fe-Ni alloy, nanocrystalline and other new magnetic materials that possess high initial permeability, and current limiting resistor should be set in the primary circuit. The voltage-alternating type has a wide working range, and resistor is not necessary for the primary circuit, which means that voltage can be inputted directly on the primary circuit and then output voltage is achieved in the secondary circuit.

Technical Parameters of Micro Current Type Potential Transformer

Model Electrical Properties Overall Dimensions (mm)
Input Voltage Current Ratio Burden Resistance (Ω) Accuracy A B C D E F G
PT011 100V, 150V, 220V, 380V, 450V 0.5mA/0.5mA 100 ±0.1% 20 17 14 14 13 4 0.8
PT012 1mA/1mA 18 17 16 13 13 4 0.8
PT013 1mA/1mA 18 18 17 13 13 4 0.8
PT014 2mA/1mA 19 17 19 13 13 4 0.8
PT015 2mA/1mA 22 19 19 13 13 4 0.8
PT016 2mA/1mA 22 19 20 13 13 4 0.8

Technical Parameters of Micro Voltage-Alternating Potential Transformer

Model Electrical Properties Overall Dimensions (mm)
Input Voltage Output Voltage No Load Current Burden Resistance (Ω) Accuracy A B C D E F G H
PT017 0-220V 0-10V ≤0.5mA ≥100kΩ ±0.1% 31 25 34 25 15 7.5 1 4
PT018 0-220V 35 32 31 25 15 22 1 5
PT019 0-220V 34 32 31 15 7.5 22 1 5
PT021 0-220V 32 27 20 15 7.5 5 0.8
PT022 0-220V 32 26 20 15 7.5 5 0.8
PT023 0-380V 33 29 20 15 7.5 5 0.8
PT031 0-120V 28 33 18 20 9.8 24 5 10
PT032 0-120V 30 33 20 20 9 24 12 1

Based on these great features, our potential transformer is widely applied in electrical transducer, electronic electricity meter, precision power meter, voltage measuring device, electric power monitoring instrument, etc.

Now, we can supply different types of micro potential transformers, and they are widely applied in electric power system due to the stable performance. Our product allows operation under high temperature, and ageing phenomenon is prevented while long service life is guaranteed. The current type is suitable for voltmeter to measure voltage, and it can also work inside wattmeter or electricity meter in combination with current transformer. In addition, our product can be made into different shapes, such as round, square and others.

As an experienced micro voltage-alternating potential transformer manufacturer and supplier in China, we offer a wide array of products, including electricity meter current transformer, R-shaped iron transformer core, magnetic core of protection switch, and more.

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