ATO - Split-core current transformer with high accuracy and low phase shift
  • ATO - Split-core current transformer with high accuracy and low phase shift

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Manufacturer: LEM

ATO - Current transformers with a high accuracy core and a small phase shift

Characteristics:
  • Measurement of AC primary currents from 0 to 125A
  • Current (ratio 1mA/A) or voltage output (ration 225 or 333mV @ IPr)
  • Class accuracy 1 (voltage output) [&] 3 (current output) according to IEC 61869 standard
  • Compact
  • Self-powered
  • 10 [&] 16 mm diameter aperture
  • Frequency: 50/60 Hz

Features:

  • Split-core type
  • Easy mounting
  • Cable output: 1m
  • Operating range: -10°C to +55°C for voltage output models, -25°C to +70°C for current output models
  • Dimensions (ATO): 45.5 x 33.5 x 32 mm with a 10 mm sensing aperture, 56.1 x 40.8 x 33.2 mm with a 16 mm sensing aperture
  • Rated insulation voltage 600V CATIII PD2, basic insulation

Standard compliance:

  • The products are CE certified EMC 2014/30/EU regarding their safety according to the European directive 2014/35/EU and tested according to the standards IEC 61010-1.
  • UL 508 (UR marking)
  • IEC 61869 for Instrument transformers performances
  • UL 2808 (in progress)
Model Primary
Nominal
Value
Measuring
Range
Secondary
Nominal
Signal
Accuracy (%) Mounting

ATO-10-B225-D10

10A 12A 0.225V 1 On primary fastening

ATO-10-B333-D10

10A 12A 0.333V 1 On primary fastening

ATO-100-B225-D16

100A 120A 0.225V 1 On primary fastening

ATO-100-B333-D16

100A 120A 0.333A 1 On primary fastening

ATO-125-B1I-D16

125A 150A 125mA 1 On primary fastening

ATO-125-B225-D16

125A 150A 0.225V 1 On primary fastening

ATO-125-B333-D16

125A 150A 0.333V 1 On primary fastening

ATO-15-B225-D10

15A 18A 0.225V 1 On primary fastening

ATO-15-B333-D10

15A 18A 0.333V 1 On primary fastening

ATO-16-B225-D10

16A 19.2A 0.225V 1 On primary fastening

ATO-16-B333-D10

16A 19.2A 0.333V 1 On primary fastening

ATO-20-B225-D10

20A 24A 0.225V 1 On primary fastening

ATO-20-B333-D10

20A 24A 0.333V 1 On primary fastening

ATO-30-B225-D10

30A 36A 0.225V 1 On primary fastening

ATO-30-B333-D10

30A 36A 0.333V 1 On primary fastening

ATO-32-B225-D10

32A 38.4A 0.225V 1 On primary fastening

ATO-32-B333-D10

32A 38.4A 0.333V 1 On primary fastening

ATO-50-B225-D10

50A 60A 0.225V 1 On primary fastening

ATO-50-B333-D10

50A 60A 0.333V 1 On primary fastening

ATO-60-B225-D10

60A 72A 0.225V 1 On primary fastening

ATO-60-B225-D16

60A 72A 0.225V 1 On primary fastening

ATO-60-B333-D10

60A 72A 0.333V 1 On primary fastening

ATO-60-B333-D16

60A 72A 0.333V 1 On primary fastening

ATO-63-B225-D10

63A 75.6A 0.225V 1 On primary fastening

ATO-63-B225-D16

63A 75.6A 0.225V 1 On primary fastening

ATO-63-B333-D10

63A 75.6A 0.333V 1 On primary fastening

ATO-63-B333-D16

63A 75.6A 0.333V 1 On primary fastening

ATO-75-B1I-D10

75A 90A 75mA 1 On primary fastening

ATO-75-B225-D10

75A 90A 0.225V 1 On primary fastening

ATO-75-B225-D16

75A 90A 0.225V 1 On primary fastening

ATO-75-B333-D10

75A 90A 0.333V 1 On primary fastening

ATO-75-B333-D16

75A 90A 0.333V 1 On primary fastening

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Characteristics:
  • Measurement of AC primary currents from 0 to 125A
  • Current (ratio 1mA/A) or voltage output (ration 225 or 333mV @ IPr)
  • Class accuracy 1 (voltage output) [&] 3 (current output) according to IEC 61869 standard
  • Compact
  • Self-powered
  • 10 [&] 16 mm diameter aperture
  • Frequency: 50/60 Hz

Features:

  • Split-core type
  • Easy mounting
  • Cable output: 1m
  • Operating range: -10°C to +55°C for voltage output models, -25°C to +70°C for current output models
  • Dimensions (ATO): 45.5 x 33.5 x 32 mm with a 10 mm sensing aperture, 56.1 x 40.8 x 33.2 mm with a 16 mm sensing aperture
  • Rated insulation voltage 600V CATIII PD2, basic insulation

Standard compliance:

  • The products are CE certified EMC 2014/30/EU regarding their safety according to the European directive 2014/35/EU and tested according to the standards IEC 61010-1.
  • UL 508 (UR marking)
  • IEC 61869 for Instrument transformers performances
  • UL 2808 (in progress)
Model Primary
Nominal
Value
Measuring
Range
Secondary
Nominal
Signal
Accuracy (%) Mounting

ATO-10-B225-D10

10A 12A 0.225V 1 On primary fastening

ATO-10-B333-D10

10A 12A 0.333V 1 On primary fastening

ATO-100-B225-D16

100A 120A 0.225V 1 On primary fastening

ATO-100-B333-D16

100A 120A 0.333A 1 On primary fastening

ATO-125-B1I-D16

125A 150A 125mA 1 On primary fastening

ATO-125-B225-D16

125A 150A 0.225V 1 On primary fastening

ATO-125-B333-D16

125A 150A 0.333V 1 On primary fastening

ATO-15-B225-D10

15A 18A 0.225V 1 On primary fastening

ATO-15-B333-D10

15A 18A 0.333V 1 On primary fastening

ATO-16-B225-D10

16A 19.2A 0.225V 1 On primary fastening

ATO-16-B333-D10

16A 19.2A 0.333V 1 On primary fastening

ATO-20-B225-D10

20A 24A 0.225V 1 On primary fastening

ATO-20-B333-D10

20A 24A 0.333V 1 On primary fastening

ATO-30-B225-D10

30A 36A 0.225V 1 On primary fastening

ATO-30-B333-D10

30A 36A 0.333V 1 On primary fastening

ATO-32-B225-D10

32A 38.4A 0.225V 1 On primary fastening

ATO-32-B333-D10

32A 38.4A 0.333V 1 On primary fastening

ATO-50-B225-D10

50A 60A 0.225V 1 On primary fastening

ATO-50-B333-D10

50A 60A 0.333V 1 On primary fastening

ATO-60-B225-D10

60A 72A 0.225V 1 On primary fastening

ATO-60-B225-D16

60A 72A 0.225V 1 On primary fastening

ATO-60-B333-D10

60A 72A 0.333V 1 On primary fastening

ATO-60-B333-D16

60A 72A 0.333V 1 On primary fastening

ATO-63-B225-D10

63A 75.6A 0.225V 1 On primary fastening

ATO-63-B225-D16

63A 75.6A 0.225V 1 On primary fastening

ATO-63-B333-D10

63A 75.6A 0.333V 1 On primary fastening

ATO-63-B333-D16

63A 75.6A 0.333V 1 On primary fastening

ATO-75-B1I-D10

75A 90A 75mA 1 On primary fastening

ATO-75-B225-D10

75A 90A 0.225V 1 On primary fastening

ATO-75-B225-D16

75A 90A 0.225V 1 On primary fastening

ATO-75-B333-D10

75A 90A 0.333V 1 On primary fastening

ATO-75-B333-D16

75A 90A 0.333V 1 On primary fastening