AC1025 • 25 Amp Current Transformer Low Cost 50/60Hz Current Transformers Applications • Sensing Overload Current • Ground fault detection • Metering • Analog to Digital Circuits • Competitive pricing due to high volume production • Manufactured in an ISO-9001:2000, TS-16949:2002 and ISO-14001:2004 certified Talema facility • Fully RoHS compliant Electrical Specifications @ 20°C ambient E lectrical S p ecificatio n s Primary Current Turns Ratio Volt per Amp Ratio at 25A for 100 ohm load Volt per Amp Ratio at 2.5A for 100 ohm load DC Resistance at 20°C Dielectric Withstanding Voltage (Hi-pot) 25A nom., 75A max. 1000:1 nominal 0.100 V/A 0.098 V/A 48 ohms 4KVrms Mechanical Specifications E n viro n men tal S p ecificatio n s Polycarbonate Epoxy Conforms to UL94-VO Pins Ø 1.0mm Marking TALEMA Date Code (W/Y) AC1025, Dot at start pin Approximate Weight Tolerance Storage Temperature Insulation Resistance 10000 35.5 grams ±0.2mm Output Volts vs Input Current For various ohmic loads 100 100 10 0 100 200 500 100 200 100 50 0.1 1 10 Input Current in Amps 100 Dimensions 14.30 30.20 400 500 600 Typical Excitation Curve (AC1025~AC1030) 1K 1 300 Percent ratio error in % 2K Sec RMS Exciting Voltage in Volts Output Voltage in Volts Infinity 1000 10K 5K 10 -55° to +130°C 100 megohms min. %RE vs RL at Rated primary current (AC1025) Load Resistance RL in ohms C a se Encapsulant Flammibility Terminals 10 1 0.1 0.01 0.1 1 10 100 30.20 Sec RMS Exciting Current in mA TALEMA INDIA W/Y AC1025 5±1mm Ø11.40 2 3 20.32 1 Ø 1.016 Notes: 1) Unless requested, the terminating resistor and the one-turn primary are not supplied 2) Pin 3: Normally for mechanical support only but will be used on center tapped designs 2.08 1 10.16 I - Turn Primary 25A 3 25mA RL 1/8W 2.5V 100 ohms 2 Germany: Int.+49 89 - 841 00-0 • Ireland: Int.+35 374 - 954 8666 • Czech Rep: Int.+420 37 - 744 9303 • India: Int.+91 427 - 244 1325 http://www.talema-nuvotem.com (06-06)CT’s\AC1025