Datasheet · EN — Siemens Energy datasheet (2021) for the SFR and SFR-X three-phase voltage regulators: in-house engineering and manufacturing of 3-phase regulators, the SFR-X variant with a separate tap-changing mechanism compartment for easy inspection and maintenance, the list of available SFR modifications, and the full catalog-number rating table covering 13200 V and 34500 V nominal voltage classes from 500 up to 4000 rated kVA in OA and FA cooling.
As a vertically integrated manufacturer of 3-phase regulators, Siemens Energy offers distinct advantages. All of our 3-phase regulators are engineered and manufactured in-house.
Our expertise in both technology and service gives us an additional advantage in the custom engineering necessary for most 3-phase regulator applications. The SFR voltage regulator has proven its reliability and durability in the toughest environments. Unit construction, tough exterior coating and side inspection door are just a few of the time-tested features of today's SFR.
In addition, Siemens Energy offers the popular SFR-X which features a separate tap-changing mechanism compartment, allowing for easy inspection and maintenance. Separating the regulator tap-changer significantly increases the life of the regulator by eliminating arcing in the main tank containing the coil and core.
The datasheet lists the following available SFR modifications: magnetic temperature indicator; pressure relief device; lightning arrester brackets; magnetic type liquid level indicator; pressure/vacuum gauge; special bushings; MR tap changer; separate tap changer compartment (available with SFR-X and SFR-MR); customized controls; special CT/PT.
The full catalog-number rating table as printed in the datasheet. Catalog series 40-… units are OA-cooled and series 41-… units are FA-cooled; the middle segment of the catalog number encodes the nominal voltage class (13.2 = 13200 V, 34.5 = 34500 V) and the last segment the rated kVA. The datasheet gives no further electrical parameters (no impulse levels, regulation range or standards references) beyond this table.
| Catalog Number | Nominal Voltage | Rated KVA | Line Amps | OA/FA |
|---|---|---|---|---|
| 40-13.2-0500 | 13200 | 500 | 219 | OA |
| 40-13.2-0750 | 13200 | 750 | 328 | OA |
| 40-13.2-1000 | 13200 | 1000 | 437 | OA |
| 40-13.2-1500 | 13200 | 1500 | 656 | OA |
| 40-13.2-2000 | 13200 | 2000 | 874 | OA |
| 40-13.2-2500 | 13200 | 2500 | 1093 | OA |
| 40-13.2-2972 | 13200 | 2972 | 1300 | OA |
| 41-13.2-0625 | 13200 | 625 | 274 | FA |
| 41-13.2-0937 | 13200 | 937 | 410 | FA |
| 41-13.2-1250 | 13200 | 1250 | 546 | FA |
| 41-13.2-2000 | 13200 | 2000 | 874 | FA |
| 41-13.2-2667 | 13200 | 2667 | 1166 | FA |
| 41-13.2-3333 | 13200 | 3333 | 1458 | FA |
| 41-13.2-4000 | 13200 | 4000 | 1750 | FA |
| 40-34.5-0500 | 34500 | 500 | 84 | OA |
| 40-34.5-1000 | 34500 | 1000 | 167 | OA |
| 40-34.5-1500 | 34500 | 1500 | 251 | OA |
| 40-34.5-2000 | 34500 | 2000 | 335 | OA |
| 41-34.5-0625 | 34500 | 625 | 105 | FA |
| 41-34.5-1250 | 34500 | 1250 | 209 | FA |
| 41-34.5-2000 | 34500 | 2000 | 335 | FA |
| 41-34.5-2667 | 34500 | 2667 | 446 | FA |
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