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)
C a se
Encapsulant
Flammibility
Terminals
Marking
Approximate Weight
Tolerance
25A nom., 75A max.
1000:1 nominal
0.100 V/A
0.098 V/A
48 ohms
4KVrms
E n viro n men tal S p ecificatio n s
Storage Temperature
Insulation Resistance
-55° to +130°C
100 megohms min.
Mechanical Specifications
Polycarbonate
Epoxy
Conforms to UL94-VO
Pins Ø 1.0mm
TALEMA
Date Code (W/Y)
AC1025, Dot at start pin
%RE vs RL at Rated primary current
(AC1025)
10000
35.5 grams
±0.2mm
For various ohmic loads
Load Resistance RL in ohms
1000
Output Volts vs Input Current
100
100
Infinity
Output Voltage in Volts
10K
5K
10
0
100
200
300
400
500
600
10
2K
1K
500
100
Percent ratio error in %
Typical Excitation Curve
(AC1025~AC1030)
1
200
100
50
Sec RMS Exciting Voltage in Volts
10
0.1
1
10
Input Current in Amps
100
1
Dimensions
30.20
14.30
0.1
0.01
0.1
1
10
100
Sec RMS Exciting Current in mA
30.20
TALEMA INDIA
W/Y
AC1025
Ø11.40
5±1mm
Ø 1.016
2
3
20.32
1
2.08
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
1
10.16
I - Turn
Primary
25A
25mA
3
2
R
L
1/8W
2.5V
100 ohms
Germany: Int.+49 89 - 841 00-0 • Ireland: Int.+35 374 - 954 8666 • Czech Rep: Int.+420 377 - 338 351 • India: Int.+91 427 - 244 1325
http://www.talema-nuvotem.com
(06-06)CT’s\AC1025
TALEMA [ NUVOTEM TALEMA ]
