AC1040 • 40 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
40A nom., 125A max.
Turns Ratio
1000:1 nominal
Volt per Amp Ratio at 40A for 100 ohm load
0.100 V/A
Volt per Amp Ratio at 4A for 100 ohm load
0.098 V/A
DC Resistance at 20°C
49.3 ohms
Dielectric Withstanding Voltage (Hi-pot)
4KVrms
Mechanical Specifications
C a se
Encapsulant
Flammibility
Terminals
Marking
Approximate Weight
Tolerance
Polycarbonate
Epoxy
Conforms to UL94-VO
Pins Ø 1.0mm
TALEMA
Date Code (W/Y)
AC1040, Dot at start pin
E n viro n men tal S p ecificatio n s
Storage Temperature
Insulation Resistance
-55° to +130°C
100 megohms min.
%RE vs RL at Rated primary current
(AC1040)
10000
47.3 grams
±0.2mm
Load Resistance RL in ohms
1000
Output Volts vs Input Current
For various ohmic loads
100
100
Infinity
10
0
200
400
600
800
Output Voltage in Volts
10K
5K
1K
2K
Percent ratio error in %
10
500
200
100
100
Typical Excitation Curve
(AC1040~AC1050)
Sec RMS Exciting Voltage in Volts
1
50
10
0.1
10
Input Current in Amps
100
1
Dimensions
34.90
14.30
0.1
0.01
0.1
1
10
Sec RMS Exciting Current in mA
34.90
TALEMA INDIA
W/Y
AC1040
Ø14.60
5±1mm
Ø 1.016
2
3
25.40
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
40A
40mA
3
2
R
L
1/4W
4.0V
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\AC1040
TALEMA [ NUVOTEM TALEMA ]
