Identification of transformer
Definition of the various numbers of pieces: :
| Type |
Description |
| OP | Transformer open type |
| EP | Transformer enclosed type (NEMA 1) |
Definition of various voltages (tension) possible :
| NO. | A | B | C | D | E | F | G | H | I | J | K | L |
| Voltage (Volts) | 600 | 480 | 416 | 380 | 347 | 277 | 240 | 208 | 120 | 32 | 24 | 16 |
| NO. | M | N | O | P | Q | R | S | T | U | V | W |
| Voltage (Volts) | 12 | 208/416 | 240/480 | 347/380 | 120/240 | 12/24 | 16/32 | 220 | 280 | 460 | 230 |
The numbers of pieces of the transfomateur use a combination of two (2) letters: the first, for the primary and the second, for the secondary.
Exemple : Transfomer 100 VA, 60 Hz, type open
Primary : 600V Secondary : 120/240V
No. de pièce :
No. de pièce
:
Note: If the transformer is at 50/60 Hz, an asterisk (*) is added to the beginning in front of the number of the piece.
exemple : Transformer 50 VA, 50/60 Hz, enclosed type
primary : 347/380 V Secondary : 12/24 V
No. of piece : *EP50PR
