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PAUL

JAMECO HAS 2 A VERY CHEEP CURRENT TRANSFORMERS.

CAT 271 FEB 2007

PAGE 244 PN 174887 $3.69 MOLDED CONTAINMENT

THIS CT IS USED AROUND 1 OF THE WIRES (THE BLACK WHICH IN ELECTRICAL, NOT
ELECTRONICS IS HOT) IF YOU NEED MORE SENSITIVITY YOU INCREASE THE NUMBER OF
TURNS THRU THE DONUT. 200A/5A RATIO. IF YOU ARE USING A VOLTMETER PUT A LOAD
(BURDEN) RESISTOR ACROSS THE WINDING. IF USING A AMP METER, HOOK DIRECT ACROSS
THE WINDING WITH NO RESISTOR. THE RESISTOR IS USED TO KEEP THE VOLTAGE FROM
CLIMBING OUT OF SIGHT. THIS IS THE TYPE I USE HERE.

PAGE 245 PN 627591 $2.09 OPEN FRAME

IT LOOKS LIKE THIS UNIT IS WIRED IN SERIES WITH THE CRRENT CARRYING WIRE
SENSITIVITY IS 110MV PER AMP. SUGGESTED BURDEN RESISTOR IS 60 OHMS

73
SPENCE
K4KEP


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