Power System Products
Distribution, Transfer, & Paralleling Switchgear

• Low & Medium Voltage (208V-38kV) Switchgear
Integrated Power Systems
• Generated Power System Control Panels

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Load Transfer Switchgear

APT has an expansive offering of Automatic Load Transfer Switchgear (ATS). These power system products are used to switch power from a normal source to an emergency source. We have many different options from Open Transition Transfer to Closed Transition Transfer and soft loading/unloading. APT's Automatic Transfer Switchgear will allow facilities to switch between normal and emergency power seamlessly to fit in any footprint (FAC-Series).

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Automatic Paralleling Switchgear

APT Automatic Paralleling Switchgear Controls can be designed to operate in medium or low voltage. These power system products are engineered to order, and are used in power system applications. They require operating multiple generators in parallel only, generators in parallel with a utility source, or multiple utility sources in parallel. In other words, they would run at the same time. No matter what the situation is, there is a paralleling controller for every application.

One of our popular Automatic Paralleling Switchgear Controls is the Utility Paralleling Control Module (UP). In addition, APT has the Automatic Paralleling Control Panel (ACP-Series). Finally, we have the PM CAT Power Module Paralleling Control Module.

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Equipment Buildings, Walk-in & Skid-Mounted Switchgear

APT is one of few leading manufacturers that makes equipment buildings and software controlled automation systems to form an integrated walk-in switchgear power system. These are built in either an insulated equipment building (PwrHouse) or an ISO container based switchgear building (PwrContainer). This type of power system product allows for easy shipping and rapid deployment power systems. In other words, rapid deployment is quick movement through our power systems.

APT also has a Drop-Over Walk-In Switchgear Building Shelter (PwrShell). It's easy to install for new or existing outdoor non-walk-in switchgear that needs to be converted into a walk-in style.

Then, we have an outdoor walk-in generator enclosure combined with power distribution switchgear (GenHouse). Finally, APT has switchgear that can be combined with utility metering compartments (PwrSkid).

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Medium Voltage Metal-Clad Switchgear

APT's flagship UL listed Medium Voltage (5kV – 15kV) Metal-Clad Switchgear (15A-Series) provides a feature packed traditional draw-out vacuum circuit breaker switchgear. This is applied for utility intertie, which allows current passing between two or more electric utility systems. The vacuum circuit breaker is also applied for utility/generator automatic/manual paralleling, peak shaving, main-tie-main, and automatic transfer switchgear.

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Medium Voltage Metal Enclosed Switchgear

APT Medium Voltage (2.4kV – 38kV) Metal Enclosed Switchgear can be built for both indoor and outdoor installations. This type of switchgear offers ultimate extra safety and flexibility, with options available to meet virtually any power system needs.

Available options include full draw-out size (MEA-Series), compact size (MED-Series), and ultra-compact size (FAC-Series) featuring vacuum circuit breakers. A vacuum circuit breaker can be removable from switchgear for high performance.

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Low Voltage Switchboards & Control Switchgear

APT Low Voltage (208V, 480V, 575V, 600V, 690V) Switchboards & Control Switchgear (SGU & SBU-Series) can be used in Prime Power or an Emergency Power application. These power system products require operating multiple generators in parallel, or at the same time. APT Low Voltage Switchgear can seamlessly transfer electrical loads from the utility to the generators. Electrical loads can also be transferred from the generators to the utility, in conjunction with automatic standby operation.

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Grounding Systems

APT's Grounding Systems can be used to provide effective grounding for medium voltage transformers, generators, and ungrounded power systems. We offer Low Resistance Grounding System Neutral Grounding Resistors (LZR-Series) and High Resistance Grounding System Transformer-Resistor Systems (HZR-Series). Low & High Impedance Grounding Reactors (ZGR-Series) and Solar Photovoltaic Effective Grounding Systems (SolarGround-Series) are also an option.

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Generator / Load Bank Quick Connection

APT's Generator / Load Bank Quick Connection series is your best solution for quickly connecting a rental generator set or load bank to your facility. APT offers low voltage floor-standing or wall-mount designs, ranging from 400A to 4000A. Then, you can get optional features including circuit breakers, phase rotation monitoring, ground fault monitoring, manual transfer, and various enclosure options.

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Surge Protection

The APT Surge Snubber (SurgeStop+) is designed to protect the insulation of medium voltage generators, transformers, and motors. As a result, this reduces the surge wave's rise rate in the event of switching or lightning surges.

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Engineered Power Systems

APT has you covered from primary utility intertie to backup generator paralleling. In addition, we have unit substations all the way down to point of use panelboards.

Our Engineered Power System products consist of Traditional AC Balance of Plant Power Distribution Systems (APS), Solar Power AC Collection, Distribution, and Grid-Tie Switchgear Systems (BrightPwr).

We also have switchgear & control systems for data centers (DataCTR). Then, we have large scale microgrid sustainable energy systems (APTGrid).

APT also offers combined heat & power systems (CHPSA) that increase energy efficiency. Finally, we offer rotating energy conversion generator (RotoVerter) and battery energy storage systems (EnerStore).

Let APT be your single source for all components of your power system project no matter how complex!

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APT Microgrid & Master Controls

APT Engineered To Order Switchgear Microgrids and Switchgear Master Controls can be designed to operate in medium or low voltage. They are also used in applications which require a Virtual Remote Switchgear SCADA System (APTView), Load Shed/Load Add Control (LS), Load Sense Demand Control (LD), Island Mode Control (IM), Utility Intertie Control (UI), Utility Peak Shaving Control (PS), Import/Export Control (IE), or Microgrid Control (MG).

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Unit Substations & Transformers​

APT offers compact single ended & double ended unit substations. These power system products include substation dry type & pad mount oil-filled transformers (PTX-Series). ISO container based transformer modules (PwrContainerT) and close-coupled Medium Voltage Switchgear with Transformer & Low Voltage Switchboard (MTL-Series) are other options.

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Arc Flash Mitigation Switchgear

APT Custom Arc Flash Mitigation Switchgear (ArCrypt-Series) is available in low & medium voltage applications. This type of power system product is for areas where traditional arc resistant switchgear does not fit. APT's ArCrypt Series is designed to reduce the severity of an arc flash. An arc flash can cause your power system to explode due to a short circuit or poor fault condition.

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APT Transfer
Switch Controls

APT Engineered To Order Load Transfer Switchgear Controls can be designed to operate in medium or low voltage. They are also used in applications which require Manual Non-Automatic Open Transition Transfer (MT), "N+1" Redundant Back-up Generator Automatic Transfer, Automatic Open Transition (ATO), Automatic Closed Transition (ATC), Soft-loading/Unloading (SL), and Bypass/Isolation (BI).

Then, you get a choice of Time-Delay Automatic Return to Normal (AR) or Non-Automatic Operator Supervised Return to Normal (NA) operation. Automatic Transfer Control Modules allow for bumpless transfer of electrical loads via automatic standby operation. Bumpless transfer means the electrical loads can move from manual mode to automatic mode without disrupting the process.

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Industrial Control Panels

APT offers Industrial Control Panels in flexible configurations for your application. Annunciation Panels (PowerAdvisor-Series) can be provided in a separate control cabinet, or as an integral part of an APT system. Whether it is to start a motor (MotorGo-series), or provide power measurements and metering (PowerSense-Series), APT has the Industrial Control Panel to fit your application.

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Kits & Accessories

A variety of Kits & Accessories are available from APT for your power system equipment. We offer switchgear station battery systems & replacements. In addition, we have battery chargers, power system upgrade kits, lift trucks, and mechanical lug kits.