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52120A/COIL 3 KA 25-Turn Coil
Number of turns .................................................... 25
Minimum internal jaw dimension to clear wires 26 mm (width) x 36 mm (length)
Maximum input current ........................................ 120 A continuous with built-in 12 V fan on
Maximum voltage .................................................. 4.5 V rms
[1]
Input Current
0 A to 100 A
0 A to 120 A
10 Hz to 65 Hz
0 A to 120 A
65 Hz to 300 Hz
0 A to 40 A
300 Hz to 1 kHz
0 A to 12 A
1 kHz to 3 kHz
0 A to 3 A
3 kHz to 6 kHz
0 A to 1 A
6 kHz to 10 kHz
[1]
The inductance and mutual inductance of the 25 turn coil and clamp that is measured causes a frequency dependent compliance
voltage across the coil. The length and configuration of the cables that connect the current to the coil also have an effect.
Maximum input current is 120 A input at approximately 100 Hz. Maximum current input decreases to approximately 0.8 A at
10 kHz.
[2]
Includes coil/clamp interaction.
52120A/COIL 6 KA 50-Turn Coil
Number of turns .................................................... 50
Minimum flexible probe length ............................ 500 mm
Maximum input current ........................................ 120 A continuous with built-in 12 V fan on
Maximum voltage .................................................. 4.5 V rms
[1]
Input Current
0 A to 100 A
0 A to 120 A
10 Hz to 65 Hz
0 A to 120 A
65 Hz to 300 Hz
0 A to 120 A
300 Hz to 1 kHz
0 A to 120 A
1 kHz to 3 kHz
0 A to 25 A
3 kHz to 6 kHz
0 A to 13 A
6 kHz to 10 kHz
[1]
The inductance and mutual inductance of the 50 turn coil causes a frequency dependent compliance voltage across the coil.
Maximum frequency for 120 A input current is approximately 600 Hz. Maximum current input decreases to approximately 13 A at
10 kHz.
[2]
Includes coil/probe interaction.
The specifications for these coils are at 99 % confidence level and are the combined
accuracy of the coil and a 52120A. If the coils are used with other current sources
the calibration uncertainty of the coils alone is 0.65 % (99 % confidence level) from
0 Hz to 10 kHz.
Accuracy
Effective Current
Frequency
Amp-turns
DC
0 to 2500
0 to 3000
0 to 3000
0 to 1000
0 to 300
0 to 100
0 to 50
Accuracy
Effective Current
Frequency
Amp-turns
DC
0 to 5000
0 to 6000
0 to 6000
0 to 6000
0 to 3500
0 to 1250
0 to 600
Note
Introduction and Specifications
Performance Specifications
52120A + Coil Accuracy
±(% of Amp-turns + % of 52120A range)
% of Amp-turns
% of 52120A Range
0.7 %
0.7 %
0.7 %
0.7 %
0.8 %
1.5 %
5.0 %
52120A + Coil Accuracy
±(% of Amp-turns + % of 52120A range)
% of Amp-turns
% of 52120A Range
0.7 %
0.7 %
0.7 %
0.7 %
0.8 %
1.5 %
5.0 %
1
[2]
0.7 %
0.7 %
0.7 %
0.7 %
1.0 %
1.0 %
1.0 %
[2]
0.7 %
0.7 %
0.7 %
0.7 %
1.0 %
1.0 %
1.0 %
1-21
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