Series 386 Non-Automatic Power Transfer Switches

User-Initiated Control

ASCO 386 non-automatic transfer switches are generally used in applications where operating personnel are available and the load is not an emergency type requiring automatic transfer of power. The power-switching mechanism and controller is the same hardware used on the highly reliable ASCO Series 300 transfer switches. ASCO 386s are furnished as standard with a momentary-type selector switch to initiate transfer and retransfer. They can also be arranged for remote control via ASCO s communication products.

Fig. 13: ASCO 386 400 Amp

Type 1 Enclosure w/Optional

Accessories 9C, 9D Source

Availability Lights

Electrical Features:

lListed under UL 1008, CSA certified:

-UL listed through 480 VAC.

-CSA certified through 600 VAC.

lDoor-mounted selector switch for local, manually initiated

electrical control.

lSizes from 30 through 3000 amps. l Available to 600 VAC, 50 or 60 Hz. l Rated for all classes of load transfer.

l 100% tungsten load ratings through 400 amps.

l Designed for emergency and standby applications. l Same withstand and close-on rating as Series 300.

Standard Selectable Control Features:

lInphase monitor to transfer motor loads between live sources, without any intentional off time, to prevent

inrush currents from exceeding normal starting levels.

lSelective load disconnect, double-throw contact to operate at an adjustable 0 to 20 second time delay prior

to transfer and reset 0 to 20 seconds after transfer.

lHigh/Low nominal voltage setting. Allows user to adjust

for source low reduced voltage conditions in remote areas.

l60 Hz or 50 Hz selectable switch.

lSingle/Three-phase selectable switch.

Control Features:

lSwitch position indicating signal lights.

lOne auxiliary contact closed when transfer switch is connected to normal and one closed on emergency, standard feature 14A/14B.

Optional Accessories:

l 6Q Key-operated, momentary source selector switch furnished instead of the standard selector switch.

l 9C, 9D Source availability lights to provide operator with a local indication of power source availability.

l Accessory 14AA/14BA auxiliary contacts to indicate

 

position of main contacts. Two (2) for normal position and

 

two (2) for emergency position (one set is standard).

l 72A Communications interface module (RS-485) to allow

 

local or remote communications with ASCO

 

PowerQuest ® VPi or SiteWeb™ communication products.

l

Special Enclosures

 

(Specify by appropriate code in catalog number):

Fig. 14: Control and Display Panel

Type 3R: Raintight

 

Type 4: Weatherproof

Type 12: Oil Tight

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Emerson 300 Series manual Series 386 Non-Automatic Power Transfer Switches, User-Initiated Control

300 Series specifications

The Emerson 300 Series is a notable line of instrumentation devices designed to cater to the needs of modern industrial applications. This series features advanced technologies that facilitate precise measurements and improved operational efficiency, making it a preferred choice for various sectors, including oil and gas, pharmaceuticals, and food and beverage.

One of the main highlights of the Emerson 300 Series is its robust design, which ensures durability and reliability even in the most challenging environments. The devices are equipped with weather-resistant housings, allowing for outdoor installations without compromising performance. This ruggedness is complemented by a user-friendly interface that simplifies operation and maintenance, enhancing overall user experience.

The series employs cutting-edge sensor technology, allowing for highly accurate and real-time data collection. This is particularly critical in applications where precision is paramount. The sensors are designed to minimize drift over time, thereby reducing the need for frequent recalibrations, which can be both time-consuming and costly.

Another significant feature of the Emerson 300 Series is its integration capabilities. These devices can seamlessly connect to existing industrial automation systems, ensuring smooth data flow and interoperability between different components. This capability is essential for maintaining an efficient workflow and improving overall productivity.

The series also incorporates advanced diagnostics and predictive maintenance features. This not only helps in identifying potential issues before they escalate into significant problems but also facilitates timely maintenance, reducing downtime and enhancing operational efficiency. Users benefit from enhanced visibility into system performance, allowing for informed decision-making.

Additionally, the Emerson 300 Series supports various communication protocols, making it adaptable to diverse industrial environments. Whether it's through analog outputs, digital protocols, or wireless communication, the series provides flexibility that meets the demands of modern process control systems.

In summary, the Emerson 300 Series stands out with its combination of rugged design, advanced sensor technology, seamless integration capabilities, and predictive maintenance features. These characteristics make it an invaluable tool for industries that require high reliability and accuracy in process measurement and control. As industries continue to evolve, the Emerson 300 Series remains at the forefront, providing solutions that help businesses achieve their operational goals efficiently and effectively.