25A

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
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