Emerson ASCO 7000 Brochures and Data Sheets
ASCO 7000 Series
Power Transfer Switches
Protecting:
Healthcare Facilities
Web Hosting, Internet Data Centers
Commercial Buildings / Industrial Buildings
Telecom Central Offices
Process Manufacturing
Distributed Power / Load Management
Critical Loads Demand ASCO
As we become more dependent on the quality and
reliability of electrical power,
interruption or complete loss
of power can create serious
and even crippling financial
losses, or impose dangers to
life and safety.
ASCO Power Technologies
(ASCO) provides the solutions to handle the transfer
of critical loads to emergency sources reliably and
with state of the art products. Using ASCO products
can mean the difference
between a minor inconvenience and a major catastrophe. You’ll find ASCO Power
Transfer Switches wherever
there is a critical load to be
protected.
When flexibility in power
switching is a must, ASCO
offers a variety of product
solutions to meet virtually
every application requirement, including distributed
generation applications.
That’s why the 7000 SerieS
is available in open, delayed,
closed and closed soft load
configurations. Additionally,
switched or overlapping
neutral options provide for
reliable operation of ground
fault protection systems and
reduction of voltage transients from unbalanced load
switching.
ASCO Power Transfer
Switches are the first CE
Marked, IEC 60947-6-1
compliant Transfer Switches
in the world.
2
The Recognized Leader in Power Transfer
Switch Technology Offers the Most
Advanced Transfer Switches in the World.
7000 series
ASCO Power Transfer Switches are the standard of the
industry. High speed transfer of loads between alternate sources of power, regardless of ampacity size, is
achieved by a reliable, field proven solenoid operating
mechanism. When combined with a programmable
microprocessor controller with keypad and LCD display,
they offer the most advanced method of transferring
all types of loads, such as motors, electronic drives,
UPS’s and microprocessor based systems. 7000 SerieS
Power Transfer Switches are available open or enclosed,
in ampacity sizes from 30 through 4000 Amperes with
the largest selection of optional accessories offered anywhere. All switching configurations are available with an
integrally mounted bypass-isolation switch and/or rated
for use in service entrance applications.
Fig. 1: Three Pole 7000 SerieS Automatic Transfer Switch
rated 1600 Amperes (shown with optional front
connected terminals and Power Manager).
7000 series Power Transfer Switches Product Features
• Conventional two-position transfer configuration,
plus closed and delayed transition modes of operation.
All configurations available with either automatic or
non-automatic control.
• UL listed to 1008 Transfer Switch Equipment &
CSA certified to CSA 22.2 No.178-1978 Automatic
Transfer Switches.
• Qualified and certified to IEC 60947-6-1, CE marked
(optional). (Limited to certain accessories.)
• Rated up to 600 VAC, 30 through 4000 Amperes.
• Reliable and field proven solenoid operating mechanism.
• High withstand and close-on ratings including short time
withstand current rating for optimum flexibility in circuit
breaker coordination (600-4000 Amperes).
• Solid, switched, or overlapping neutral conductor options.
• Front replaceable main and arcing contacts (800-4000 Amperes).
• Programmable microprocessor controller with keypad and
LCD display.
• Centrally located terminal block for customer control
connections (260-4000 Amperes).
• 16mm, industrial grade control switches and indicating lights.
• Switch position LED indicators and source acceptability lights.
• Standard ground conductor connections.
• Four auxiliary contacts, two contacts closed when switch
is in normal position and two contacts closed when switch
is in emergency position.
• Local/remote communications capability for interfacing
with ASCO POWERQUEST® communication products.
3
7000 series Power Switching Solutions
Closed Transition Transfer Switching
ASCO Automatic Closed Transition Transfer Switches feature
main contacts that overlap, permitting the transfer of electrical
loads without power interruption. The switch transfers in a
make-before-break mode if both sources are within acceptable
parameters. Control logic continuously monitors source
conditions and automatically determines whether the load
transfer should be open (conventional non-overlap mode) or
closed transition. Available 150 through 4000 Amperes.
Closed Transition Transfer within 5 electrical degrees is achieved
passively, without control of engine generator set. Therefore,
no additional control wire runs are required between the ATS and
engine generator set governor. Plus, protective relaying may
not be required under normal operation since the contact overlap time is less than 100 milliseconds (consult your local utility
on protective relay requirements).
Failure to synchronize indication and extended parallel time
protection is built-in to all 7000 SerieS closed transition
controls to prevent abnormal operation.
Fig. 2: Four pole, Closed Transition Transfer Switch
rated 1000 Amperes in Type 1 enclosure.
Delayed Transition Transfer Switching
ASCO Delayed Transition Transfer Switches are designed
to provide transfer of loads between power sources with a
timed load disconnect position for an adjustable period of
time. Applications include older style variable frequency
drives, rectifier banks, and load management applications.
• Available in 150 through 4000 Amperes.
• Utilizes reliable, field proven solenoid operating
mechanisms.
• Mechanical interlocks to prevent direct connection
of both sources.
• Indicator light (16mm, industrial grade
type LED) for load disconnect position.
• Adjustable time delay for load disconnect position.
Fig. 3: Four pole, Delayed Transition
Transfer Switch rated 2000 Amperes.
4
7000 series Power Switching Solutions
Non-Automatic Transfer Switching
ASCO Non-Automatic Transfer Switches are electrically operated
units which are operated with manual control switches mounted
locally or at remote locations.
• Sizes from 30 through 4000 Amperes.
• Microprocessor based controller provides for addition of
optional accessories.
• Controller prevents inadvertent operation under low
voltage conditions.
• Low control circuit operating currents allow for long line runs
between remotely mounted manual control switches and the
transfer switch.
• Source acceptability lights inform operator if sources
are available to accept load.
• Standard inphase monitor can be activated for
transferring motor loads.
Fig. 4: Three pole Non-Automatic,
electrically operated 400 ampere switch
shown in Type 1 enclosure.
Withstand and Close-On Ratings for all 7000 series Products
(RMS Symmetrical Amps)
1,2
5
7000 series Power Switching Solutions
Automatic Transfer Bypass-Isolation Switches
Fig. 5: Rated
150-600 Amps
ASCO Automatic Transfer & Bypass-Isolation Switches are
available in open transition, closed transition and delayed
transition designs. The bypass and isolation features allow
the primary automatic transfer switch to be inspected, tested,
and maintained without any interruption of power to the load.
They also provide redundant power transfer in the event the
ATS is disabled or removed from service.
• Available 150 to 4000 Amperes.
• Allows bypass-isolation without load interruption.
• Bypass switch and transfer switch have identical electrical
ratings.
• Heavy duty mechanical interlocks prevent undesirable
operation.
• Bypass contacts carry current only during bypass mode.
Fig. 6: Rated
600- 1200 Amps
Fig. 7: Rated
800-3000 Amps
• Transfer switch is drawout design for ease of maintenance.
• Bypass and isolation handles are permanently mounted.
The bypass switch has dead front quick-make, quick-break
operation for transferring of loads between live sources.
• Bypass switch is fully rated for use as a manual 3-position
transfer switch.
• Bypass and isolation functions are simple, requiring a total
of two operating handles.
• No toggle switches, push buttons, selector switches or
levers are required for bypass-isolation operation.
• Mechanical indicators show bypass and transfer switch
positions.
• 800 -1200 ampere available in shallow depth, front
connected or rear connected designs.
Transfer Switch Drawout Features (150-4000 Amperes)
• Automatic secondary disconnects
Automatic
Secondary
Disconnects
Automatic
Shutters
(optional on
1600-4000amps)
Fig. 9: Bypass-Isolation Transfer
Switch secondary disconnects and
optional automatic shutters.
6
remove all control power as switch is
withdrawn.
• Drawout carriage provides for easy
transfer switch maintenance and/or
removal via commercially available
breaker hoists.
• Optional transfer switch lifting yoke
kit available
• Optional automatic shutters which
close when the transfer switch is
withdrawn to provide bus isolation,
specify accessory 82C.(1600-4000A
only)
Fig. 8: Rated
4000 Amps
Self
Aligning
Jaws
Fig. 10: Bypass-Isolation
Transfer Switch self
aligning power jaws.
7000 series Power Switching Solutions
Bypass and Isolation Handles - Simple as 1, 2, 3
LED Indicators
Bypass
switch
position
Transfer
switch
position
Fig. 11: Transfer Bypass
Status Panel*
*Standard on switches up through H 1200A.
Specify ACC 82E for G frame 1600-4000A
Source
availability
Isolation
handle
position
Not in
“auto”
flashing
LED
Bypass to Normal
1
Push in bypass
handle and turn
it counter
clockwise
Bypass Handle
Isolation Handle
Test Position
2
Bypass Switch
Automatic Transfer Switch
Bypass Switch
E
L
N
E
L
Mechanical
bypass
switch position
flags
Isolation
handle
Padlocking
provisions
Isolation Handle
Turn isolation
handle counter
clockwise until
window shows
“Test”
Isolation Position
3
Isolation Handle
Turn isolation
handle counter
clockwise
until window
shows “Isolate”
Automatic Transfer Switch
Bypass Switch
Automatic Transfer Switch
N
E
L
N
Mechanical isolation handle position
window (connected/test/isolate)
Fig. 12: Bypass-Isolation
Switch user interface
Key:
Represents Current Flow
In test position control panel remains
energized to allow for electrical
operation of a transfer switch.
7
7000 series Service Entrance Power Transfer Switches
The ASCO Service Entrance Power Transfer Switch
combines automatic power switching with a disconnect and overcurrent protective device on the utility
source. The power transfer switch meets all National
Electric Code requirements for installation at a facility’s main utility service entrance. Service entrance
rated transfer switches generally are installed at
facilities that have a single utility feed and a single
emergency power source. A circuit breaker serves
as the utility disconnect and links are provided to
dis-connect both neutral and ground connections.
This product is either UL 1008 or UL 891 listed and is
available up to 600V and 4000A in Standard, Delayed,
Closed Transition, Soft Load, and Bypass Isolation
Configurations.
Standard Features
Fig. 13: Ground and neutral
disconnect links
• Available from 150 to 4000 Amperes
• ASCO 7000 SerieS Power Transfer Switch is
UL 1008 Listed
• Standard UL Type 1 Enclosure
• Disconnect and overcurrent protective device on
the utility source: molded case circuit breaker 150
to 2000 Amp; insulated case 3000 to 4000 Amp
• Disconnect link on Neutral
• Disconnect link on Ground
• Ground and Neutral Bus, all silver-plated copper
• Solderless screw type terminals for External
Power Connections
• Meets all NEC requirements for use as
service entrance
• Internet enabled monitoring and control
• Service entrance breakers are rated: -
100% for 1000 Amps and above; 80% below 1000
Amps for all bypass switches - 100% for 2500
Amps and above; 80% below 2500 Amps for all
standard transfer switches
Optional Features
Enclosures - Secure Double Door
•
-
UL Type 3R w/strip heater & thermostat
-
UL Type 4 or 4X
-
UL Type 12
Connections
•
-
Crimp lugs
-
Bus Riser on Normal, Emergency or Load
Protective Relays/Metering
•
-
Accessory
85L , see page 15
Ground Disconnect
Link
Neutral
Disconnect
Link
N
Load
Ø
Ground Fault
Current
Transformer*
N
Utility
Switched
Neutral
Emergency
Ø
Circuit
Breaker
ATS
GFCT Ground Fault
Current
Transformer
ATS - Automatic
Transfer Switch
One line diagram of a typical service entrance rated transfer switch
available in Solid, Switched or Overlapping Neutral
* Ground fault trip protection provided on sizes of 1000 Amperes
and above
Surge Suppression
•
- Accessory 73, Surge protector (see pg. 14)
ASCO POWERQUEST
•
®
products (see pages 16-21)
- A SCO 72E Ethernet Connectivit y module, page 17
- ASCO 5310/5350 Remote annunciators, page 17
- ASCO 5400 Power Quality Meters, page 17
Additional Breaker(s)
•
- Circuit Breaker on Emergency
- Load Distribution Panel
Optional high AIC ratings on breakers
•
Consult ASCO for additional features
8
7000 series Service Entrance Power Transfer Switches
Ordering Information
To order an ASCO 7000 SerieS Service Entrance Power Transfer Switch, complete the following catalog number.
7 A US + A + 3 + 400 + N + 5X + C
A Automatic
N Non-
Automatic
Product
US Conventional
2-Position
UB Open Transition
Bypass
CUS Closed Transition
CUB Closed Transition
Bypass
DUS Delayed Transition
DUB Delayed Transition
Bypass
Neutral
Code*
A Solid Neutral
(standard)
B Switched
Neutral
C Overlapping
Neutral
Phase
Poles
2
3
70, 100
150, 200
225, 250
400, 600
800,1000
1200,1600,
2000,2500,
3000
4000
Voltage
Code
C 208
D 220
E 230
F 240
H 380
J 400
K 415
L 440
M 460
N 480
P 550
Q 575
Grp
Code
5
5X-
optional
acces-
sories
EnclosureAmperes
C Type 1 enclosure
M Type 3R secure
double door
N Type 4 secure
double door
P Type 4X secure
double door
(316 SS)
Q Type 12 secure
double door
R 600
*Note. Switches rated 150, 600-3000 amps available with 2, 3 or either conventional switched neutral (4 poles) or overlapping neutral (optional). For 4 pole
applications on switches rates 150 to 400 amps (bypass switches only) and 4000 amps specify overlapping switched neutral (optional). Conventional switched neutral
is provided on delayed transition transfer products when specified.
The Example Catalog Number above is 7AUSA3400N5XC (X is used to specify optional accessories).
Dimensions and Weights for non-bypass configurations
Type 1 and 3R Enclosures4
Switch Rating
amps
70, 100 ,150,
200, 225
250, 400
6001, 800
1
10001, 1200
16001, 2000
25001, 3000
Switch Rating
amps
70, 100 ,150,
200, 225
250, 400
6001, 800
1
10001, 1200
16001, 2000
25001, 3000
1
1
1
1
1
1
Phase
Poles
2
2
3
3
2
2
3
3
2
2
3
3
2
2
3
3
3
3
3
3
Phase
Poles
2
2
3
3
2
2
3
3
2
2
3
3
2
2
3
3
3
3
3
3
Neutral
Code
STD
B, C
STD
B, C
STD
C
STD
C
STD
B, C
STD
B, C
STD
B, C
STD
B, C
STD
B, C
STD
B, C
Neutral
Code
STD
B, C
STD
B, C
STD
C
STD
C
STD
B, C
STD
B, C
STD
B, C
STD
B, C
STD
B, C
STD
B, C
Type 1 Dimensions, In. (mm)
Width Height Depth
36.5 (927)
36.5 (927)
36.5 (927)
36.5 (927)
36.5 (927)
36.5 (927)
36.5 (927)
36.5 (927)
38 (965)
38 (965)
38 (965)
38 (965)
38 (965)
38 (965)
38 (965)
38 (965)
38 (965)
38 (965)
38 (965)
38 (965)
48.5 (1232)
48.5 (1232)
48.5 (1232)
48.5 (1232)
48.5 (1232)
48.5 (1232)
48.5 (1232)
48.5 (1232)
91 (2311)
91 (2311)
91 (2311)
91 (2311)
91 (2311)
91 (2311)
91 (2311)
91 (2311)
91 (2311)
91 (2311)
91 (2311)
91 (2311)
13.25 (337)
13.25 (337)
13.25 (337)
13.25 (337)
13.25 (337)
13.25 (337)
13.25 (337)
13.25 (337)
28 (711)
28 (711)
28 (711)
28 (711)
48 (1218)
48 (1218)
48 (1218)
48 (1218)
48 (1218)
48 (1218)
72 (1829)
72 (1829)
Type 3R Dimensions, In. (mm)
Width Height Depth
36(914)
36(914)
36(914)
36(914)
36(914)
36(914)
36(914)
36(914)
41(1041)
41(1041)
41(1041)
41(1041)
41(1041)
41(1041)
41(1041)
41(1041)
41(1041)
41(1041)
41(1041)
41(1041)
48(1219)
48(1219)
48(1219)
48(1219)
48(1219)
48(1219)
48(1219)
48(1219)
95.5(2426)
95.5(2426)
95.5(2426)
95.5(2426)
95.5(2426)
95.5(2426)
95.5(2426)
95.5(2426)
95.5(2426)
95.5(2426)
96(2438)
96(2438)
16 (406)
16 (406)
16 (406)
16 (406)
16 (406)
16 (406)
16 (406)
16 (406)
34(864)
34(864)
34(864)
34(864)
62(1575)
62(1575)
62(1575)
62(1575)
62(1575)
62(1575)
85(2159)
85(2159)
Approx. Shipping
Weight Lb. (kg)
400 (185)
408 (188)
408 (188)
416 (192)
400 (185)
408 (188)
408 (188)
416 (192)
800 (370)
820 (378)
865 (393)
846 (390)
1085 (501)
1105 (510)
1105 (510)
1134 (523)
2590 (1198)
2640 (1218)
4590 (2118)
4655 (2148)
Approx. Shipping
Weight Lb. (kg)
520 (236)
530 (240)
530 (240)
548 (249)
520 (236)
530 (240)
530 (240)
548 (249)
990 (458)
1010 (467)
1010 (467)
1036 (479)
1305 (604)
1325 (613)
1325 (613)
1354 (626)
2890 (1337)
2940 (1360)
5350 (2474)
5415 (2504)
Ampere Interrupting
Capacity (AIC) Ratings
Switch Rating
amps
70 - 225 25 35
250 25 35
400 35 35
600, 800 65 N/A
1000,1200 65 N/A
1600, 2000 65 100
2500, 3000 100 N/A
4000 100 N/A
Notes: 1. Unit is designed for top and bottom cable
2. Enclosures for 600 – 3000 amps are free
standing.
3. When temperatures below 32° F can be
4. Dimensional data is approximate and
subject to change. Certified dimensions
available upon request.
Type 3R enclosures are not suitable for
installations conducive to
windblown snow or rain conditions.
5. Contact ASCO for extended
warranty options.
entry for all services
and load.
experienced, special precautions should
be taken, such as the inclusion of strip
heaters, to prevent condensation and
freezing of this condensation. This is particularly important when environmental
enclosures (Type 3R, 4 & 12) are ordered
for installation outdoors. Type 3R
enclosures are not suitable for installations conducive to windblown snow
or rain conditions.
AIC Rating (kA)
Standard
Optional
9
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