VT Accuracy Rating

>> Accuracy Rating: 1.2WXYZZ

The accuracy rating you inquired about is an IEEE Standard defined designation that is interpreted as follows:

1.2 => is the accuracy class, 1.2% at the rated burden

WXYZZ => is the burden (or load) connected to the secondary of the instrument transformer.

So this transformer would provide 1.2% accuracy when any of the IEEE defined loads (W, X, Y, or ZZ) are connected, where the following loads and power factor are associated with each of the burden codes:

DESIGNATION, VA, PF
========== ==== =====
W, 12.5, 0.1
X, 25, 0.7
M, 35, 0.2
Y, 75, 0.85
Z, 200, 0.85
ZZ, 400, 0.85

Thank you Sir. Very clear explanation. Godbless!