Dy1 shift - proved +30 ABC & -30 ACB but rotation is confusing

[Manindemand]

At two different stations, I took phase angles from A phase PT on 115kv bus to A B & C metering PTs on 13.8kv bus. I used a Dranetz Phasemeter - model 314. Both transformers are Dy1 and grid is A-B-C CCW.

The station with A-B-C sequence read:
HV A leads LV A by 32 deg
HV A leads LV B by 152 deg
HV A leads LV C by 272 deg

The station with A-C-B sequence read:
HV A leads LV A by 333 deg
HV A leads LV B by 93 deg
HV A leads LV C by 215 deg

When you draw two circles and plot the phases they both indicate A-B-C with CCW phasor rotation.

At the A-C-B station, I expected B and C angles to be the opposite in order to show A-C-B sequence.

Do these readings look correct? Please explain. Thanks

 

[jbartos]

Suggestions to Manindemand (Electrical) Nov 2, 2003 marked ///\\jbartos, all of our stations have one-line drawings showing the bus configuration, breakers, switches and transformers.
///Yes. This is pretty much the industry standard. I prepared some.\\ The one-line indicates which phase hits each transformer HV bushing.
///Yes, agreed.\If both stations had the same sequence then wouldn't both A phases be the same?
///Yes, agreed.\\Today I went to the A-C-B station (15 min from home) and verified that the original readings are correct.
///Excellent.\\First I used a cable toner to tone out the cable from LV PT j-box to the metering cabinet in the control building. The wiring from the cable was NOT rolled. I then ran a 100 ft lead from the control building (HV A Ph fuse) out to the LV PT j-box. I set up my phase meter and took readings again. The readings were the same. This proved the cable was not spliced wrong in the ground somewhere.

The next thing I'll do is take our Arbiter Power System Monitor (Model 931A) back to the A-C-B station and compare phase angles. Maybe it's the way the old Dranetz reads.
///Please, it the power distribution associated with the stations radial or looped/ringed?\\Is it possible that the readings are correct even with one xfmr A-C-B and the other A-B-C.
///In radial networks, ABC and ACB may be somewhat loose, since the protective relaying and the downstream loads are adjusted to ACB if this is truly ACB not ABC marked ACB. Take an induction motor from ACB station, mark its direction of rotation, and connect it in ACB station to find out a difference in its direction of rotation. Instead of the motor, a phase sequence meter that you have (if correctly working) should do.\\ Both circles plot A-B-C sequence in CCW direction.
///Good.\\ How could that ever change unless you actually rolled phases in the generator?
///By using marking ACB for ABC.\\ Phase sequence only changes the rotation of motors and the phase shift through transformers right?
///And in protective relays of transformers.\\