Has an input voltage of 34.5 kV or less;
Has an output voltage of 600 V or less;
Is rated for operation at a frequency of 60 Hz; and
Has a capacity of 10 kVA to 2500 kVA for liquid-immersed units and 15
kVA to 2500 kVA for dry-type units.
These are the transformers subjected to the DOE 2016 requirements.
Exceptions are defined by the same DOE 10 CFR 431.192.(5):
The term “distribution transformer” does not include a transformer that
is an:
(i) Autotransformer;
(ii) Drive (isolation) transformer;
(iii) Grounding transformer;
(iv) Machine-tool (control) transformer;
(v) Non-ventilated transformer;
(vi) Rectifier transformer;
(vii) Regulating transformer:
(viii) Sealed transformer;
(ix) Special-impedance transformer;
(x) Testing transformer;
(xi) Transformer with tap range of 20 percent or more;
(xii) Uninterruptible power supply transformer, or
(xiii) Welding transformer.
Drive (isolation) transformer means a transformer that:
(1) Isolates an electric motor from the line;
(2) Accommodates the added loads of drive-created harmonics; and
3) Is designed to withstand the additional mechanical stresses
resulting from an alternating current adjustable frequency motor drive or a
direct current motor drive.
No comments:
Post a Comment