Emerson ASCO 300 Group G Brochures and Data Sheets

ASCO Se r ies 300
Power Transfer Switches
for Power Outage Protection

24-hour protection, no matter
when trouble strikes

Where would you be

without a constant flow of
electrical power? We often
take for granted that power
will always be around when
we need it. In reality,
power failures are common,
and when the power goes out,
your business suffers. Power
failures are unpredictable.
They can occur at any time
and for any number of
reasons — a bolt of lightning,
a power surge, a blackout, an
accident or even equipment
failure. They come without
warning and often at the
most inconvenient times.
It’s for this reason that
many businesses and other
entities have invested in
emergency power backup
systems. Typically, the
system consists of an engine
generator and an automatic

transfer switch (ATS) that
transfers the load from the
utility to the generator.
An ATS with built-in
control logic monitors
your normal power supply
and senses interruptions and
unacceptable abnormalities.
When the utility power
fails, the ATS automatically
starts the engine generator
and transfers the load
after the generator has
reached proper voltage and
frequency. This happens in
a matter of seconds after
the power failure occurs.
When the utility power has
been restored, the ATS will
automatically switch the
load back and, after a time
delay, shut down the engine
generator. With an ATS, you
are protected 24 hours a day,
seven days a week.

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Typical Applications

Telecom

In the telecommunications
industry, providing a high level
of service and dependability is
crucial. Lost power means an
interruption in service for your
customers and lost business
for your company. For instance,
with cell sites scattered across a
wide geographical region and in
many remote areas, the chances
of an interruption in power are
increased, making an ATS a
valuable resource at each
location. To maintain
dependable service, each
cell site must be monitored
24 hours a day. This can be very
difficult without some type
of remote monitoring and
testing capability. The
Transfer Switch, combined with
ASCO’s monitoring and control
management system, is a
cost-effective, packaged
solution that can achieve both
of these challenging objectives
without a major investment
at each cell site. With ASCO’s
connectivity solutions, you can
remotely monitor and control
numerous sites from around
the corner or across the world.

SerieS 300

Agriculture

Maintaining electrical power
is vital to an agriculture
operation. If the flow of power
is interrupted, your operation
will be at risk unless the backup
generator is quickly activated.
A prolonged power outage can
affect numerous aspects of the
operation, from housing and
feeding livestock to processing
and producing the end
product. With an ASCO
300 Transfer Switch, power will
automatically be transferred
over to your backup generator,
eliminating the need to
manually switch from utility
to generator. When power
is restored, the ASCO
300 Transfer Switch will, after
an adjustable time delay to
allow for utility stabilization,
automatically switch the load
back to the utility service.

SerieS

SerieS

Commercial /Retail,
Light Industrial

The retail industry is very
competitive. An electrical
power failure can have a
dramatic impact on a retailer’s
bottom line. If power is
interrupted during peak
shopping times, the effect
can be extremely damaging
to present and future business.
A power interruption will not
only suspend shopping, it can
also create safety problems,
result in lost transaction data,
lost account information and
possible damage to data
collection equipment. In
addition, retailers who rely on
controlled climates to protect
valuable inventory could suffer
even greater losses, especially
if the power failure occurs at a
time when no one is available to
rectify the situation. To avoid
any of these power outage
problems, simply install a
backup generator with an ASCO

SerieS 300 Transfer Switch, and

your power outage concerns
will be a thing of the past.

Municipal

The ASCO SerieS 300 Transfer
Switch can be a critical
component of a municipal
government’s emergency
power backup system.
Residents of townships, cities
and counties rely on police,
fire, ambulance/first aid and
other critical public sector
services. An interruption in
power can affect the ability
of emergency services to
effectively respond to the
needs of the community.
When time is a critical factor,
such as when responding to a
fire alarm or an emergency call,
an ASCO
Switch can be a lifesaver,
by automatically switching
to power from the backup
generator. While not
all municipal services are a
matter of life and death, they
are always expected to be there.

SerieS 300 Transfer

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series 300 Power Transfer Switches

Maximum Reliability & Excellent Value

With a SerieS 300 Transfer Switch, you get a product backed by
ASCO Power Technologies, the industry leader responsible for virtually
every major technological advance in the Transfer Switch industry.

The ASCO
transfer critical loads in the event of a power outage. Each and every
standard component was designed by ASCO engineers for this purpose.

The
capabilities for dependable operation in any environment. A user-friendly
control interface with a 128x64 graphical LCD display and intuitive
symbols allow for ease of operation while visual LED indicators display
the transfer switch status. Operating parameters and feature settings
can be adjusted without opening the enclosure door.

The rugged construction and proven performance of the ASCO
SerieS 300 assure the user of many years of complete reliability.
The
placed on the switch when switching stalled motors and high inrush loads.

ASCO’s
and maintain. All parts are accessible from the front so switch contacts

can be easily inspected.

SerieS 300 was designed for one purpose–to automatically

SerieS 300 incorporates the Group G controller with enhanced

SerieS 300 is even designed to handle the extraordinary demands

SerieS 300 modular, compact design makes it easy to install, inspect

Features

The SerieS 300 is listed to UL 1008 standard for total system loads

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and CSA standard C22.2 for automatic transfer switches.

Meets NFPA 110 for Emergency and Standby Power Systems

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and the National Electrical Code (NEC) Articles 700, 701 and 702.

UL1008 Withstand and Close-on Ratings for
ASCO Series 300 Group G Products

(RMS Symmetrical Amperes)

Switch

Ratings

Frame

D 30 100kA - 60 J 22kA 22kA 10kA

200kA 35kA 200 J

200kA 35kA 200 J
D 200 200kA - 200 J 65kA 25kA 10kA
D 230 100kA - 300 J 65kA 25kA 10kA
E 260, 400 200kA - 600 J 65kA 42kA 35kA
J 1504, 2004

400
J 600 200kA 200kA 800 L 65kA 50kA 42kA
H 600 200kA 200kA 800 L 65kA 65kA 65kA
H 800 - 1200 200kA 200kA 1600 L 65kA 65kA 65kA
G 1000 - 1200 200kA 200kA 2000 L 85kA 85kA 85kA
G 1600 - 20003 200kA 200kA 2500 L 85kA3 85kA3 85kA
G 2600 - 3000 200kA 200kA 4000 L 100kA 100kA 100kA
G 3200 200kA - 4000 L 100kA 100kA ­ G 4000 200kA 200kA 5000 L 100kA 100kA 100kA

Notes: 1. All WCR values indicated are tested in accordance with the requirements

of UL 1008, 7th Edition. See ASCO Pub. 1128 for more WCR information.

2. Application requirements may permit higher WCR for certain switch sizes.

3. Front connected only.

4. J150, 200, 230 Amperes available in 3ADTS and 3NDTS only.

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(Amperes)

Transfer

Switches

D 70 - 100

D 150

35kA 35kA 200 RK1

35kA 35kA 200 RK1

Current Limiting Fuses

480V
Max.

200kA 200kA 600 J 65kA 50kA 42kA 2304, 260

600V
Max.

Max.

Size, A

1,2

Specific Breaker

240V

Class

Max.

42kA 22kA 10kA

65kA 25kA 10kA

480V
Max.

600V
Max.

Fig. 1: ASCO Power Transfer Switch

rated 200 amperes

Restriction of Hazardous Substances (RoHS)

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compliant controller.

30 through 3000 amperes in a compact design.

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Switch operating temperature range of

•

0 to +40

Available to 600 VAC, single or three phase.

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True double-throw operation: The single

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solenoid design is inherently inter-locked
and prevents connections to both sources
at the same time.

No danger of the SerieS 300 ATS transferring

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loads to a dead source because the unique
ASCO single-solenoid operator derives power
to operate from the source to which the load is
being transferred.

Easy-to-navigate 128x64 graphical LCD display

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with keypad provides LED indicators for switch
position, source availability, not in auto mode,
and alert condition.

Integrated multilingual user interface for

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configuration and monitoring.

Delayed transition operation is now available

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(Dual Operator Configuration).

Non-automatic operation can be selected using

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the key pad without opening enclosure door.

Relay expansion module with extra relays for

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accessory outputs (optional).

Includes soft keys for test function and time delay

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bypass as standard features.

Emergency source failure alert indication.

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Historical event log (optional).

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Statistical ATS system monitoring information.

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Diagnostic functions.

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Password protection to prevent unauthorized

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tampering of settings.

Adjustable time-delay feature prevents switch

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from being activated due to momentary utility
power outages and generator dips.

Auxiliary contacts to indicate position of main

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contacts. Two (2) for normal and two (2)
emergency position

Supplied with solid neutral termination.

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Optional switched neutral pole available.

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Field modification accessory kits available.

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Available for immediate delivery.

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o

C.

series 300 Power Transfer Switches

Designed to Fit Anywhere

The ASCO SerieS 300 product line represents the most compact
design of automatic power transfer switches in the industry. With
space in electrical closets being at a premium, the use of wall- or
floor-mounted ASCO Power Transfer Switches assure designers
optimum utilization of space.

All transfer switches through 2000 amperes are designed to be
completely front accessible. This permits the enclosures to be
installed flush against the wall and still allow installation of all power
cabling and connections from the front of the switch. Cable entrance
plates are also standard on the 1600 and 2000 amperes units to
install optional side-mounted pull boxes for additional cable
bending space.

Fig. 2: ASCO Power Transfer Switch

rated 200 amperes

Fig. 3: ASCO Power Transfer Switch

rated 400 amperes

Fig. 6: ASCO Power Transfer Switch

rated 2000 amperes shown in Type 3R enclosure

Fig. 4: ASCO Power Transfer Switch

rated 600 amperes

Fig. 5: ASCO Power Transfer Switch

rated 1000 amperes

Fig. 7: ASCO Power Transfer Switch

rated 3000 amperes

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