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CT-1/CT-2 Current Transformer
Specifications
Table 1 lists the electrical characteristics of the CT-1 and CT-2 Transformers
when they are connected to the P6041 Probe cable. The environmental and
physical characteristics follow Tables 1 and 2.
Table 1: Electrical characteristics
Specification CT-1 with P6041 Probe CT-2 with P6041 Probe
Sensitivity
(see Figures 2 and 3)
5 mV/mA, ±3% into a 50 W load 1 mV/mA, ±3% into a 50 W load
Pulse Response Rise time: < 0.35 ns, 10% to 90%
Aberrations: < 5% as seen by a 1 GHz system
Rise time: < 0.5 ns, 10% to 90%
Aberrations: + 4%, –8% as seen by a
200 MHz system
L/R time constant Approximately 5 ms Approximately 125 ms
Insertion Impedance 50 W termination: 1 W shunted by approxi-
mately 5 mH
Unterminated: 2 W shunted by approximately
5 mH
50 W termination: 0.04 W shunted by
approximately 5 mH
Unterminated: 0.08 W shunted by approxi-
mately 5 mH
Frequency Response 25 kHz to 1 GHz 1.2 kHz to 200 MHz
Turns Ratio 1:5 1:25
Capacitive Loading #14 bare wire: typically 1.5 pF
#20 bare wire: typically 0.6 pF
#16 bare wire: typically 1.8 pF
#22 bare wire: typically 0.7 pF
Maximum Bare Wire Voltage
(uninsulated)
175 V
RMS
CAT I
1000 V (DC + peak AC) <3.25% duty factor
175 V
RMS
CAT I
1000 V (DC + peak AC) <3.25% duty factor
Signal Delay (with P6041 Probe
Cable)
Approximately 2.8 ns measured from 50%
points on leading edge of the current step and
output voltage
CT-1 Transformer only: 0.4 ns
Approximately 5.8 ns measured from 50%
points on leading edge of the current step and
output voltage
CT-2 Transformer only: 0.3 ns
Effect of Direct Current
(see Figures 6 and 7)
Approximately 0.3 A
DC
increases decay by a
factor of 2
Approximately 0.3 A
DC
increases decay by a
factor of 2
Amp Second Rating 1 amp msec
When this product is exceeded, the core
saturates and the CT-1 output drops to zero
50 amp msec
When this product is exceeded, the core
saturates and the CT-2 output drops to zero
Pulse Current Rating 12 amps 36 amps
RMS Current Rating 0.5 amperes maximum 2.5 amperes maximum
Output Connector Amphenol Sub-Minax #27-3 Amphenol Sub-Minax #27-3