The SR661 is a range selectable probe that offers 3 switch selectable ranges of 20, 200 or 2000AAC. This probe has a voltage output proportional at the current measured in the jaw of the probe. The SR661 has an integral 6.5 ft (1.98m) lead terminated by BNC connector. The high accuracy and wide frequency response makes this probe an excellent choice for use with oscilloscopes.
Specifications
ELECTRICAL
Nominal Range
20Apk, 200Apk, 2000Apk
Measurement Range
0.1 to 2000Apk
Transformation Ratio
Voltage output
Output Signal
mV output signal (2V Peak max), 3 range switch selectable on handle 100mV/A: 10mA to 20A Peak; 10mV/A: 0.1A to 200A Peak; 1mV/A: 1A to 2000A Peak
Accuracy (10A Range)
0.1 to 12A
≤3% ± 10mV
Phase Shift (10A Range)
0.1 to 0.5A 0.5 to 2A 2 to 10A 10 to 12A
– – ≤15° ≤15°
Accuracy (100A Range)
0.1 to 120A
≤2% ± 5mV
Phase Shift (100A Range)
1 to 5A 5 to 20A 20 to 100A 100 to 120A
– ≤15° ≤10° ≤5°
Accuracy (1000A Range)
1 to 1200A
≤1% ± 1mV
Phase Shift (1000A Range)
1 to 50A 50 to 200A 200 to 1000A 1000 to 1200A
– ≤3° ≤2° ≤1°
Overload
12A and 120A continuous/1200A for 40 min ON, 20 min OFF
Frequency Range
1Hz to 100kHz (@ -3dB) See typical response curves
Note: Reference conditions: 23 ± 3°K, 20 to 75% RH, 48 to 65Hz, external magnetic field <40A/m, no DC component, no external current carrying conductor, test sample centered. Load impedance 1m Ω @47pf.
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