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15.2.2 Pearson Model 4997 surge pulse current probe for 20 kA
The Model 4997
probe has been specially designed to verify surge current pulses as specified in IEC
/ EN 61000-4-5.
The main advantage of the Model 4997
current probe is, that the measuring system is physically
isolated from the circuit under test. The probe can be used for current pulse verification on surge
generators.
The Model 4997
current probe is ready to use as coming along with pre-mounted coaxial cable. The
BNC-end plug needs to be connected to the high-
impedance input or 50 Ω input of an ordinary
memory oscilloscope. Then the conductor carrying the surge current to be measured is passed
through the hole in the current probe. The resulting voltage wave shape on the oscilloscope will then
be an authentically reproduction of the actual current wave shape within the given accuracy.
Technical specifications
Max. peak. Current:
20,000 Amp
Max. RMS current:
150 Amp
Sensitivity:
0.01
V / Amp (MΩ system), 0.005 V / Amp (50Ω system)
Hole diameter:
53.3 mm
, 2.1 “
Probe connector:
BNC (UG-290A/U)
Scope coax cable:
BNC
Operating temperature:
0 to 65°C
Output impedance:
50 Ω
Accuracy:
<±1 %
15.2.3 Optional extension
INA 3151-63
1000 VDC breaker for CDN 3153-63
Circuit breaker for
Nominal voltage:
1000 V dc
Nominal current:
63 A
Dimension: 290 mm x 290 mm x 200 mm
Weight: 7.3 kg.
INA 3050
3 phase isolation transformer
90KVA,
Input 690V (p-p),
Output 190/380/690V (p-p) Max 75A