Tracing Breakers/Fuses On Systems With Light Dimmers; Signal Clamp (Optional Accessory) - Closed Loop Circuits - Amprobe AT-6010-EUR Manual De Usuario

4. SPECIAL APPLICATIONS

4.11 Tracing breakers/fuses on systems with Light Dimmers

The light dimmers can produce significant amount of electrical "noise", that consists of multi
frequency signal. In some rare situations, the receiver can miss-read this noise, often called a "ghost"
signal, as a transmitter generated signal. In such situation, the receiver will provide wrong readings.
When locating breakers or fuses on systems with light dimmers, make sure the dimmer is off (the
light switch is off). This will prevent the receiver to indicate a wrong breaker/fuse.

4.12 Signal Clamp (optional accessory) - Closed Loop Circuits

Closed loop, De-energized and low impedance circuits
The clamp accessory is used for applications where there is no access to the bare conductor to
connect the test leads. When the clamp is connected to the Transmitter, it enables the Transmitter
to induce signal to Energized or De-energized wire through the insulation.
Typical applications of the Signal Clamp include tracing conduits or shields grounded on both ends.
For signal cables and De-energized wires or loads, ground temporarily circuit on both ends to
perform tracing.
Connecting the Signal Clamp
1. Connect the CT-400-EUR test leads to the terminals of the Transmitter (polarity does not matter).
2. Clamp the CT-400-EUR Signal Clamp around the conductor. To increase the signal strength,
wind a few turns of conductor wire around the clamp if possible.
Set up the AT-6010-TE Transmitter:
1. Press the ON/OFF key to turn on the Transmitter. The red
LED voltage status indicator should be OFF when the
clamp is connected.
2. Short press ON/OFF button to select the Loop mode
on the Transmitter (LOOP red LED will be ON). The
clamp mode generates a boosted 6 kHz signal in order
to provide superior tracing results. The screen on the
Transmitter should appear as in Figure 4.12b.
Figure 4.12a: Connecting the clamp
20
Figure 4.12b: Transmitter indicator
showing signal in Loop mode