SFR medium-voltage voltage regulators

Step voltage regulators can improve the utility's return on investment by increasing demand at off-peak periods and, with certain accessories, even reduce the peak demand load. This translates into improved revenue for the utility company while also improving the quality of service to the customer.

The step-type voltage regulator takes an incoming voltage that will vary with load conditions and maintains a constant

output voltage. As the loading increases along the distribution feeder, the voltage will drop. This reduction in voltage

reduces the amount of power used by the lighting portion of the load. By increasing the voltage to this load, additional power is consumed. This increased power translates into increased revenue for the utility company. The same principle can

work for the utility company when it needs to reduce the voltage by a predetermined amount, thus reducing the overall power demand and delaying capital investments to meet peak demand.

Siemens provides a full range of ratings for most system voltages and current applications; manufacturing everything

from the smallest single-phase pole mount unit to large substation regulators.

When it comes to voltage regulation, Siemens provides technology that serves the customer. Our manufacturing

experience for voltage regulators and controls is unsurpassed in the industry. Today, Siemens has the largest quantity

of regulators installed worldwide.

The type SFR is a vertically integrated, three-phase regulator, which also comes with the capability of separating the tap changer. This significantly increases the life of the regulator. Siemens offers distinct advantages with all of

our three-phase regulators engineered and manufactured in-house.

Our expertise in both technology and service gives us additional advantages in the custom engineering necessary for

most three-phase regulator applications. The SFR voltage regulator has proven its reliability and durability in the toughest

environments. Unit construction, tough exterior coating and a side inspection door are just a few of the time-tested

features of today’s SFR.

Additionally, Siemens 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.