Southern States
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Southern States products are engineered to the highest technical standards and manufactured from the finest raw materials by craftsmen who share the same commitment to quality and dedication to detail that has been the cornerstone of Southern States since our inception way back in 1916. Our after sales and service team stands ready to assist in installation and operational checkout of the equipment purchased and to ensure maximum product performance for years to come. Southern States’ main focus is its customers and to be there each step of the way, providing the technical guidance, products, service, and support that have customers choosing us for over the last hundred years.
Despite the company name, Southern States LLC has supplied over 1,000 group operated switches to Canadian cold weather customers.
Disconnect Switches
Vertical Break Switches
Southern States’ latest innovation, the EV-2H, supports reliability through its unique design. This heavy duty, highly efficient vertical break disconnect switch utilizes independent mechanical and electrical systems to produce the strongest possible design with the easiest accessible maintenance. An over toggle mechanism in both open and closed positions prevents the possibility for the blade to close in extreme weather and increases down force for high fault performance. Metal encased coil spring counterbalances reduce operating effort, are impervious to weather, and prevent catastrophic failure that is possible with linear springs. Using an all stainless steel bearing also ensures a long life in all operating conditions.
Maximum Voltage: 15.5 kV – 800 kV
Continuous Current: 2000 A – 4000 A
Center Break Switches
The EC-2 and EC-2V, our latest innovation in center break switches, are robust, highly efficient designs that utilize an independent mechanical and electrical system to produce the strongest possible design with the most efficient current transfer method. The heavy duty hinge utilizes robotically welded aluminum shunts and a one-piece stainless steel rotating pivot with marine grade bushings, providing maximum rigidity and current carrying surface area, ensuring reliable performance. Using a stainless steel bearing also ensures long life in all operating conditions.
Maximum Voltage: 38kV – 362 kV
Continuous Current: 2000 A – 4000 A
Double End Break Switches
The RDA-1 and RDA-1V aluminum double end break switches are the latest innovations from Southern States. These double end break designs require minimal phase spacing and are ideally suited for applications prone to ice formations and high fault currents due to its rotating blade and reverse loop contacts. In addition, the “V” style configuration allows for mounting on structures that require minimal footprint.
Maximum Voltage: 38 kV – 362 kV
Continuous Current: 1200 A – 4000 A
Power Switching and Protection Equipment
Capacitor Switches
The Southern States CapSwitcher®, a capacitor switching device specifically designed to meet the power quality needs of today’s electrical systems, has become a prefered switching method for medium and high voltage capacitors. This special purpose SF6 capacitor switcher is available for application on single bank or back-to-back banks. Its closing resistors provide transient mitigation to minimize the detrimental effects of voltage transients, including voltage magnification, on sensitive equipment such as computers, CNC machines, and variable speed drives. It also minimizes the detrimental effects of current transients on utility equipment such as circuit breaker contacts, power transformer cores and coils, etc.
Reactor Switches
Southern States’ success has recently led to the development of our new RLS38T, an RLSwitcher® designed specifically for transformer Tertiary connected shunt reactors rated 15.5kV and 38kV. The RLS38T’s unique contact set helps address the need for high switching current (up to 3000A) required at lower voltages. By minimizing re-ignitions and maintaining contact life, it provides increased life and reliability for utilities.
Renewable Inertie
The Southern States TranSwitcher® is a renewable intertie solution designed specifically for switching and protection of power transformers. Its unique design makes it ideally suited for distribution systems that intertie with solar farms as well as other distributed energy resources. The use of a “soft close” helps to minimize system voltage drops and potential ferro-resonance issues caused by the high inrush currents associated with DER transformer energization. Employing the TranSwitcher® can help utilities increase the life of their transformer as well as maintain system power quality.
Custom Applications
Mobile Substations
Leveraging our partnership with various ISO certified transformer manufacturers, Southern States has the resources to design or retrofit mobile substations that can be outfitted with Southern States’ or your preferred switchgear brands. Available up to 230 kV and 65 MVA, our mobile products are manufactured with stringent specifications, ensuring the design is robust, durable, and to the utility’s expectations. For additional applications, Southern States also offers auxiliary mobile solutions to support reactive power compensation, switchgear failures, as well as other utility resiliency initiatives.
Substation in the Sky
For unique transmission application challenges, Southern States offers specialized solutions. Substation in the Sky is a totally customized application, addressing system protection, sectionalizing, and isolating needs of our customers. Equipment can be tailored to meet a wide range of applications. The Substation in the Sky offers the ability to monitor, communicate system information, and switch transmission lines and taps. When space is at a premium, Southern States can engineer a more economical solution than the traditional practice of building a small substation.
MACI
Verifying proper blade depth and rotation of a high voltage disconnect switch closure has created challenges for ground level operators. Southern States MACI® introduces patented magnetic technology to provide highly-visible, foolproof indication of a proper switch closure. By providing this assurance, the potential for unwanted costs associated with unplanned power outages is minimized. Additionally, MACI®’s reflective “closed” pattern provides visibility up to 100 ft and will not interfere with operation, even in icy conditions.
Power System Solutions
Both the utility and the business end of the power grid are increasingly employing power electronic energy conversion to increase efficiency. The desire to “decarbonize” power generation has led to the ongoing shift towards renewable distributed energy resources (wind, solar, storage, etc.) coupled to the grid through power electronics. The result is more harmonics and a weaker system. Businesses pursuing increased efficiency and productivity are increasingly relying on harmonic producing power electronic converters and loads that vary energy consumption rapidly.
The result of a weakening grid and an increase in harmonic producing, rapidly varying loads is a reduction in power quality and consequentially more negative impacts on the system and the components, such as transformers, motors, and capacitors.
About Southern States LLC
Just a short 45 minutes south of the world’s busiest airport, Atlanta’s Hartsfield-Jackson International Airport, down US Highways 19/41 you will find Hampton, Georgia, home of Southern States: the largest switch manufacturer of high voltage disconnect switches in the world. Inside our doors beats the heart of a vibrant, thriving business that continues our long standing history of over 100 years. Our Main Office and headquarters, Mitchell Building, is only one of our four locations dedicated to the design and manufacturing of high voltage disconnect switches and SF6 products. As a result of rapid growth throughout the past two decades, Southern States has expanded our operations to include three additional facilities. Our Power Switching Division’s recent additions include the McGarity Building, a 15,000 square foot climate controlled facility designed for manufacturing, as well as the Spencer Complex, home to the division’s sales, engineering, and assembly team. In 2012, the Service Building was also acquired to provide the space and resources needed for our Service Division to expand their operations into new markets and products.
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