ALL-TEST PRO ATPOL II, User Manual

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phase lead of +30 degrees (strongly capacitive), ATPOL II will report that there may be 2 errors,
because a p
hase lead of +30 degrees is so very unlikely (hence it displays that there “may be” errors).
You may need to use some judgment, but in general, the SureStart feature will make a judgment of
what’s right and what’s wrong and its judgment will be correct under most circumstances. We are
proud of this feature.
Identifying Errors
After the system type is identified, the number of errors that were detected is displayed once each six
seconds. Pressing the [More] key repeatedly will step through each of the errors. It is important to note
that when the voltages look reasonable, ATPOL II assumes that they are connected to the correct
phases. Thus if the voltages are rotated to the right one position, but the current probes are connected
correctly, ATPOL II will report that the current probes are rotated left one position. Although assuming
that the voltage connections are not rotated identifies the phases incorrectly, the total power will be
correct and the individual readings will be correct. The phases will be mislabeled.
Another thing to consider is that in some cases, several possible explanations for the same error are
listed as separate errors. In these cases, the potential errors are listed in order of how likely they are to
be the correct explanation. An example of this would be 2 errors, the first being that I1 and I2 have
been switched and the next error is that I3 is backwards. Only one of these errors actually exists and
the more likely one is that I1 and I2 are switched. In these cases, fix the error that seems most likely to
you to be correct and run SureStart again.
There are over 70 different error types reported. The general types, their explanations, and the
corrective actions required are:

Probe not connected. The probe that is identified appears to not be connected to ATPOL II. Check
that the probe is firmly connected to both ATPOL II and to the power system.

No current. The probe that is identified is connected to ATPOL II, but no current is detected. This
may indicate that the load is turned off or that the probe is not connected around the cable properly
or that it is not fully seated into its jack within ATPOL II.

Probe backwards. The current probe that is identified is probably backwards. Just turn it around
and clamp it on the conductor.

Probe switched. The identified probes seem to be switched. Simply trade their connections.

Signals attached to wrong jack. The identified signals seem to be connected to the wrong inputs.
Connect the probes to the correct signals.

Signals are imbalanced. It appears that the magnitude of one phase is improperly large or small
compared to the others. Check that the connections are correct and that the system type was
identified correctly.

Two inputs are the same. It appears that the identified probes are connected to the same signal.
Check the connections and that the system is correct.

Two inputs have the same phase angle. The identified probes are of the same phase, but have
different magnitudes. Check that the system is correct.

Non-standard phase angle. The phase angle between the identified phases is incorrect for the
identified system. Check the system.

Incorrect phase lag. The phase lag of the identified phase is not correct. The probe may be
backwards or the voltage or current is connected to the wrong phase.

Wrong phase sequence. It is assumed that a sequence of 1-2-3 is correct and 3-2-1 is backwards.
But 3-2-1 may be correct for your system
(for instance to have a motor run “backwards”). If the
sequence is wrong, either two voltage leads are switched or 2 current probes are switched while no
voltage is present.