INSTRUCTION MANUAL
C-103EM
Turbo Sleuth Ground Fault Locator
9 September 2002
7
6.5.1.
Check for the presence of pulses by viewing the panel ammeter pointer deflection. The
pointer will cycle between 100%, 75% and 50% of the available ground fault current. (Plus
any existing NGR current see 4.5 above) After confirming that the pulses are active, trace
the source of the ground fault as follows: -
6.5.2. Attach the TS-SENSOR current sensor to a standard voltmeter as described in section 7.
6.5.3. Locate the pulsing ground fault current by wrapping the TS-SENSOR around the X
0
or
ground cable connection (or system voltage cable if using TS-ZZ) a pulse should be
noticeable on the TS-SENSOR voltmeter. Familiarize yourself with the values of the
pulses on the hand held meter. Use a single line diagram for the electrical distribution
protected by the Turbo Sleuth. Identify the location of the Turbo Sleuth on the diagram.
6.5.4. Comparing readings of the front panel ammeter and the remote meter. Both meters
should display the same step time pattern.
6.5.5. Check for the presence of pulses at the closest branch point. Place the current sensor
around the 3 phase conductors of each outgoing circuit. If you see no pulses this is not
the faulted circuit. Move on to the next circuit
6.5.6. If current pulses are found, move down the circuit to the next branch point and repeat the
procedure.
6.5.7. Follow the pulses. The pulsing ground fault signal will lead to the equipment or to the
section of conductor containing the ground fault
6.5.8. Isolate the equipment or conductor from the circuit. Check the Turbo Sleuth ammeter and
voltmeter. If the voltage and current reads zero on these meters, the ground fault has
been removed.
6.5.9. At this point the Turbo Sleuth may be reset. Rotate the “PULSING ACTIVE” switch to the
“OFF” position and push the “RESET” button.
6.5.10. Repair or replace the equipment or conductor that was the source of the ground fault. The
equipment or conductor may now be reconnected to the circuit.
6.5.11. Confirm that the ground fault has not returned by viewing the Turbo Sleuth front panel.
Summary of Contents for C-103EM
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