The CT 4 High Current Transformer is designed to extend the current measuring capa
bility of the Tektronix A6302, A6302XL, A6312, TCP202, and P6021 Current Probes. The
CT 4 extends the measurement range up to 1000 times.
The CT 4 includes a pistol grip handle with two receptacles to accept the current probe
in either the 1000:1 or 20:1 current ranges. A sliding jaw on the transformer permits insertion
of the current carrying conductor without breaking the circuit under test.
The core and shield assembly is insulated from the windings and the handle, allowing
measurements on bare conductors with potentials to 3000 volts. The high voltage insula
tion accessory may be used to extend the allowable voltage by several times. The optional
DC Bucking Coil (015 0190 00), which slips over the front of the CT 4, nullifies the saturating
effects of steady state dc currents to 300 amperes