Designed for Commercial Applications

QT Series generators are a reliable, cost-effective backup power solution for commercial establishments and small businesses. There are over a dozen models to choose from, ranging in output from 15 to 150 kilowatts. These compact, powerful gensets are ideal for a broad range of enterprises, including restaurants, convenience stores, supermarkets, banks, fitness centers, hotels, and retail outlets.

QT Series products are environmentally friendly, surprisingly quiet, and amazingly affordable. These gaseous-fueled gensets operate on either natural gas or liquid propane (LP) vapor, which means that there are none of the concerns associated with diesel fuel, such as spillage, spoilage or odor. <br>Sound attenuation is standard on all QT Series gensets. QT Value models offer a lower price point. QT Premium models feature larger, more powerful engines that run at slower and quieter speeds during standby operation. Every QT Series genset includes the Quiet- Test™ feature, which allows the engine to run at reduced speed for near-silent operation when utility power is present.

Modular Power System Models - 200 to 1500 kW

For greater power requirements, two QT Series models (100 and 150 kW) are available with optional onboard paralleling capabilities as part of Generac's Modular Power System. This allows the easy combination of multiple units to satisfy higher kilowatt needs without expensive paralleling switchgear.

Value-Priced

Best of all, QT Series generators are surprisingly affordable. They're designed and engineered for maximum value, making them ideal for businesses that previously regarded standby generators as too costly. Having standby power allows a business to keep operating whenever utility power is lost. This means a protected revenue stream and avoidance of expensive losses. Considering the cost of a blackout, a QT Series genset might pay for itself during the first lengthy power outage, yet also provide decades of reliable service. Investing in a QT Series genset is a wise business decision.
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Residential / Light Commercial Standby Generators

Generac manufactures a complete line of residential / light commercial standby generators that can be installed during new construction or retrofitted into existing homes and businesses. These systems range from 7 to 40 kilowatts of output, in both air- and liquid-cooled models. All models are factory-built for natural gas operation and can be easily reconfigured for liquid propane (LP gas) operation.

Residential / light commercial power systems are permanently installed outside, similar to an air-conditioning unit. They work with a matched UL Listed automatic transfer switch that responds within seconds when utility power is lost down, supplying electrical power to all pre-selected lights, appliances and equipment. Automatically!

Generac's economical air-cooled standby power generators are available in 7, 12 and 15 kilowatt models and meet the needs of most residential applications. The liquid-cooled 15, 20, 25, 30 and 40 kilowatt models are best-suited for residential and light commercial applications that demand more power.
The systems include:
Weather Protective Enclosure - Protects generator from harmful weather and reduces exterior noise levels. Includes key locks for security.
Built-in Charger - Maintains battery voltage to ensure starting.
Automatic Safety Shutdown - Protects the engine and generator in the event of low oil pressure, high temperature, overspeed and / or overcrank.
Automatic Seven-day Exerciser - Runs the system weekly to maintain top running condition.
Natural Gas or LP Gas Operation - Factory built for natural gas operation. Can be easily reconfigured for LP gas operation.
Flexible Fuel Line - For connection from rigid pipe to generator fuel inlet. (included on 25KW and smaller units)
Tough Composite Mounting Pad - Eliminates the need to pour a concrete mounting pad (air-cooled models only).
California Emissions Compliance - Generator engines comply with applicable CARB and SCAQMD emissions requirements for stationary emergency standby generators (40 kW liquid-cooled uses a dedicated model #4749 for SCAQMD emissions compliance - natural gas only).
Choice of Fully Automatic Transfer Switches (Ordered Separately) -
UL Listed and CSA Approved, remote-mounted 100 or 200 amp automatic transfer switches, including a 100 and 200 amp service entrance rated switch and our exclusive 100 amp switch with pre-wired 12 circuit emergency load center (for use with air-cooled generators only)
* For assistance with matching a generator model with an automatic transfer switch, click here to view the Transfer Switch Features and Compatibility Chart.
Automatic Transfer Switches
Note - Automatic Transfer Switches with Built-in Load Centers include the following:
* Outdoor-rated external home connection box with a pre-wired 5 ft. seal-tight conduit for connection to the generator.
* 30 ft pre-wired conduit to connect the transfer switch to the home connection box.
* 2 ft. pre-wired conduit to connect the transfer switch to the main distribution panel.

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Generac Power Systems proudly introduces its new line of commercial / residential / industrial portalbe generators under the name of ULTRA SOURCE. The UltraSource line of product arguments our complete line of emergency automatic home standby generators and expands our capabilities to offer every kind of generator. Portable generators provide multiple use possibilities - recreational(camping and RV), industrial/commercial(manufacturers, contractors) rental and manual emergency standby(residential).
Available in the largest wattage ratings for air cooled engine generators - 12,500 and 15,000 both feature Generac's full pressure lubricated, air-cooled twin cylinder OHVITM engine and a two year warranty.

Automatic Transfer Switches

Automatic Transfer Switches are an integral part of the power generation process, allowing smooth and immediate transfer of electrical current between multiple sources and the load. When the generator is operating, the transfer switch prevents dangerous feedback of current to the utility's system. It also ensures that different power sources are fully synchronized before their power is combined or loads are transferred, which is imperative for safe operation.

The transfer switch senses when utility power is interrupted, and starts up the generator if the utility power remains absent. In about five to ten seconds, when the generator is producing full power, the transfer switch disconnects the load from the utility and connects it to the generator, restoring electricity to the load. The transfer switch continues to monitor utility power, and when it is restored, switches the load from the generator back to the utility. Once the generator is disconnected, it goes through a cool-down routine and is automatically shut down.

Generac manufactures several types of transfer switches. Each kind operates in a different way, depending upon the requirements of the overall system, and how the load is transferred between the different power sources. Transfer switch types include open transition , momentary closed transition , and bypass isolation

Generac's automatic transfer switches are designed to be simple to monitor, operate and maintain. All controls needed for daily use are conveniently located on the front door, where bright lamps indicate the switch position. All components are front adjustable and front removable for optimum serviceability. As an extra measure of safety and quality, Generac's transfer switches are UL Listed by Underwriters Laboratories for use in emergency power systems. They are also CSA certified by the Canadian Standards Association.

Generac's expertise in the design and manufacture of automatic transfer switches (ATS) is considerable. The company has produced its own fully instrumented 100 to 2600 amp switches since 1983.

Open transition transfer switches are the simplest kind, and are mechanically interlocked. They disconnect the load from one power source before making the connection to the other.

Generac's closed transition transfer switches (CTTS) eliminate momentary power interruption when both sources are present and synchronized, by transferring the loads with an overlapping contact arrangement. The momentary closed transition switch transfers the power within one hundred milliseconds, which does not require utility protective relaying.

The soft load closed transition switch extends the overlap time to multiple seconds, for a smoother transition of load to the generator. These switches are available in 100 to 2600 amp configurations.

There are many critical systems where interruption of power is not permitted, such as data transmission and hospital care. For those requirements, Generac offers its bypass isolation switch (BIS), which is designed to meet the National Electrical Code's requirements for the inspection and/or maintenance of the automatic transfer switch without the need to interrupt or cut power.

Generac transfer switches are carefully constructed and tested to assure superior performance. By combining them with our own generators, we're able to offer a complete power generation package that we support and warrant.

FEATURES & BENEFITS

Some of the outstanding features and benefits of the Generac Automatic Transfer Switches include:

• UL 1008 listed and CSA certified – Product safety features are recognized by industry organizations
• 7-day Exerciser Clock – Starts and tests the generator every week, insuring reliable performance when needed
• In-phase Monitor — Provides instantaneous transfer between two live voltage sources
• Utility Voltage Sensor – Monitors utility voltage to determine when retransfer of load can occur
• Line Failure Sensing – Circuitry monitors all phases of the utility service with dropout and pickup points
• Utility Interrupt Delay – Adjustable timer overrides momentary line failure
• Engine Warm-up Timer – Adjustable timer allows engine to operate at no load before the transfer switch transfer the load to the generator set
• Engine Warm-up Bypass – A switch allows the transfer switch to transfer the load to the generator as soon as the preset voltage and frequency levels are reached
• Minimum Run Timer – Determines the shortest period of time the generator will run and ensures adequate exercise periods
• Return to Utility Delay – Adjustable timer keeps the load on the generator set until a stable utility line is present
• Engine Cool-down Timer – Adjustable timer allows the engine to run at no load after the transfer switch transfers the load back to the utility line
• Frequency and Voltage Set – Sets the minimum frequency and voltage required before the transfer switch will be allowed to transfer the load to the generator set.

Optional Equipment

• Logic System Control — Fully adjustable timer settings. LED indication for system status and simple field service
• NEMA Enclosures — NEMA 3R, NEMA 4, NEMA 4X and NEMA 12
• Quick Change, Multi-Voltage Panel — Multiple phase / voltage configurations with a single switch. Available on switches up to 400 amps
• Auxiliary Contacts — One SPDT is standard. Additional sets are available
• Programmable Exerciser — Permits selection of  "days of the week" and "time of day." Visible digital chronograph used to select times. Allows exercising from one to seven days a week
• Exterior Meter Package — Enables user to monitor the system parameters with the door closed
• Fourth Pole — Fourth pole for switching the neutral conductor
• Preferred Source Selector Switch — Ability to select which power supply will be considered the normal source
• Manual Selector Switch — 3 positions: normal, automatic and standby
• Manual "Return to Normal" (electrically operated) — Ability to select when the switch will transfer back to normal
• Remote Automatic Control Circuit — Ability to start the generator and transfer the load to emergency from a remote location
• Signal before Transfer Contacts — Adjustable from 0.1 – 10 seconds. Signals to special loads prior to transfer. Often used to prevent elevators from stopping between floors
• Generator Mounted Transfer Switch — Transfer switch may be mounted on the genset for both indoor and outdoor application

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