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Products - Transducers
Current Transducer

Current Transducer

The Current transducer STE-A-1T converts a sinusoidal AC Current signal into an output signal that can serves several receiving instruments such as indicators, recorders, alarm units etc. The input Current is scaled down using a Current transformer T. The output of the transformer is rectified and filtered in a precision absolute amplifier A, incorporating integrated circuits. The amplified filtered output is proportional to R.M.S value of the sine wave input. The output is fed to a current converter íCí to provide a load independent D.C. Current.

Features Characteristics Technical Data Block Diagram
Features

  • Available in accuracy class index - 0.3 0.5, & 1.0

  • Withstands wide temperature variations.

  • VA burden on CT very low. - < 0.5 VA

  • Wide range of Input / Output to meet National / International requirements.

  • Comply to revised IEC 60688 (1997-10) standards.

  • Flexibility in auxiliary power supply requirements - A.C. / D.C.

  • Rugged and vibration resistant.

  • Withstands seismic test as per IEC 344-1974 for Nuclear Power Applications.

  • Available in dust proof sheet plastic enclosures suitable for Back panel / Din rail mounting.

  • Multiple outputs also available - upto 4.

  • High input / Output isolations - 4.0 KV.

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Characteristics



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Technical Data

Measuring Range 0-1 In
Rated Input 1A / 5A
Input Frequency 50Hz +/- 10%
Internal Consumption < 0.5 VA for each input
< 3VA for selfpowered
Auxiliary Power Supply 110/240 V AC
12/24/48/110/220V DC
Self Powered
Nominal Output
(Unipolar/Bipolar)
0-2.5-5.0 mA DC
0-5mA DC / 4-20mA
10-0-10 mA DC
0-5, 0-10 V. DC
Load Range (Ohms)
a) Current Output
b) Voltage Output

Max 15V/Iout
Min 1 Ohms
Residual A.C. Ripple < 1% (P-P)
Overload Capacity
a) Continuous
b) Momentary

2.0 In
20 In for 1 sec.
Accuracy Class 0.3/0.5/1.0
Response Time < 0.5 sec.
Input - output Isolation 4 KV
Operating Temperature 0 - 50°C
Impulse Voltage Test Confirms to IEC 251- 5KV having waveform of 1.2/50 microseconds.
HF Interference Confirms to IEC 255-4
Environment Condition User group II as per IEC 60688
Configuration 1-Phase
Number of output 1, 2, 3


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Block Diagram

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