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Inductive Clamp (IC-958) with Battery Pack (BP-958) Callout Features
1.
1" (25mm) Jaw Opening.
2.
Powerful coil induces a low voltage signal
onto a closed circuit.
3.
6' cord attaches to the battery pack for
power.
4.
Protective case.
5.
(8) C-cell batteries.
6.
Input jack for clamp cord.
7.
Hang mount for magnetic strap.
Magnetic Strap (not shown)
•
Hooks onto the battery pack.
•
Magnet attaches to metal cabinets,
panels, electrical boxes, etc.
•
Velcro strap wraps around and hangs
from non-magnetic objects.
Theory of Operation
The tracer consists of a transmitter and a receiver.
The transmitter produces a unique signal onto the circuit
to be traced. The receiver detects this unique signal when placed in the proper orientation to
the wires being traced or breakers being identified. The receiver provides a numeric value and a
variable pitch/tone that increase as the signal becomes stronger.
The transmitter sends a 32 kilohertz, fixed-amplitude, time-modulated signal that injects a
voltage onto the circuit to be traced, which then induces an electromagnetic field onto the circuit.
Whether the circuit is open or closed greatly affects the strength of the electromagnetic field.
In an open circuit, no current can flow, so the electromagnetic field produced is much weaker.
However, in a closed circuit, the injected voltage induces a current flow, which produces a much
stronger electromagnetic field. This is the optimal method for tracing as this much stronger
signal allows the receiver to detect it from a greater distance away from the circuit being traced.
The inductive clamp is suitable for use on de-energized conductors and energized conductors
carrying up to 120 volts and less than 5 amps of current. Higher voltages and currents negate
the signal induction properties of this unit. Also, the clamp attachment has very limited
effectiveness at identifying breakers.
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