Are there any transformers exempt from this legislation?

As defined by DOE 10 CFR 431.192 a Distribution transformer means a transformer that—

• 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:

1. Autotransformer;
2. Drive (isolation) transformer;
3. Grounding transformer;
4. Machine-tool (control) transformer;
5. Non-ventilated transformer;
6. Rectifier transformer;
7. Regulating transformer;
8. Sealed transformer;
9. Special-impedance transformer;
10. Testing transformer;
11. Transformer with tap range of 20 percent or more;
12. Uninterruptible power supply transformer; or
13. 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.