Integrated parametric current transformer
max. 5 A | IPCT
Bergoz Instrumentation
Non-intercepting DC current measurement with 10 microamps resolution.
IPCT works on the principle of the DCCT, invented at CERN, the European Particle Physics Laboratory, by K.Unser in 1969. The DC component of the current flowing through the toroid sensor is detected by a magnetic modulator, also called fluxgate or second-harmonic detector.
The AC component is detected by an active Hereward transformer. The two circuits are cascaded in a common feedback loop to generate a magnetic flux which always cancels the primary current flux. IPCT output is the voltage developed by the feedback current passing through a precision resistor.
To measure:
Return ground currents, DC and AC
Leakage current, DC and AC
Sum of low currents
Low current at high voltage
Power tube electrode currents
Electrostatic corona discharge
Electrochemically induced currents
Standby systems charging currents
Full scale from +/- 1 mA to +/- 2 A
User-adjustable Remote range control possible
+/- 10 V analog output
Flat response from DC to 4 kHz
10 microA rms resolution on any range
Large aperture 69 mm (2"7)
Accuracy independent of primary conductor position
Withstands high overload and inrush currents
Increased sensitivity with multiple primary turns
100 times more precise than Hall effect devices
Others models for DC measurement NPCT
-
zoom
