SUGGESTED SPECIFICATION

For
Series 300 Automatic Transfer Switches (3ATS)

PART 1 GENERAL

1.01 Scope

Furnish and install automatic transfer switches (3ATS) with number of poles, amperage,
voltage, and withstand current ratings as shown on the plans. Each automatic transfer
shall consist of a mechanically held power transfer switch unit and a microprocessor
controller, interconnected to provide complete automatic operation. All transfer switches
and control panels shall be the product of the same manufacturer.

1.02 Acceptable Manufacturers

Automatic transfer switches shall be ASCO Series 300 (3ATS). Any alternate shall be
submitted to the consulting engineer in writing at least 10 days prior to bid. Each
alternate bid must list any deviations from this specification.

1.03 Codes and Standards

The automatic transfer switches and accessories shall conform to the requirements of:

A. UL 1008 - Standard for Automatic Transfer Switches

B. CSA C22.2 No.178 – 1978
C. NFPA 70 - National Electrical Code
D. NFPA 99 – Health Care Facilities
E. NFPA 110 - Emergency and Standby Power Systems
F. IEEE Standard 446 - IEEE Recommended Practice for Emergency and Standby
Power Systems for Commercial and Industrial Applications
G. NEMA Standard ICS10-2005 (formerly ICS2-447) - AC Automatic Transfer Switches
H. NEC Articles 700, 701, 702
I. International Standards Organization ISO 9001: 2008
J. IEC 60947 – 6 – 1

PART 2 PRODUCTS

2.01 Mechanically Held Transfer Switch

A. The transfer switch unit shall be electrically operated and mechanically held. The
electrical operator shall be a single-solenoid mechanism, momentarily energized.
Main operators which include over current disconnect devices will not be accepted.
The switch shall be mechanically interlocked to ensure only one of two possible
positions, normal or emergency.

ASCO Power Technologies, Florham Park, New Jersey 07932. 800-937-ASCO

8-2016 1 Publication 3090 R11
 B. The switch shall be positively locked and unaffected by momentary outages so that
contact pressure is maintained at a constant value and temperature rise at the
contacts is minimized for maximum reliability and operating life.

C. All main contacts shall be silver composition. Switches rated 800 amperes and
above shall have segmented blow-on construction for high withstand current
capability and be protected by separate arcing contacts.

D. Inspection of all contacts shall be possible from the front of the switch without
disassembly of operating linkages and without disconnection of power conductors.
A manual operating handle shall be provided for maintenance purposes. The handle
shall permit the operator to manually stop the contacts at any point throughout their
entire travel to inspect and service the contacts when required.

E. Designs utilizing components of molded-case circuit breakers, contactors, or parts

thereof which are not intended for continuous duty, repetitive switching or transfer
between two active power sources are not acceptable.

F. Where neutral conductors must be switched, the ATS shall be provided with fully-
rated neutral transfer contacts.

G. Where neutral conductors are to be solidly connected, a neutral terminal plate with
fully-rated AL-CU pressure connectors shall be provided.

2.02 Group ‘G’ Controller with Integrated User Interface Panel

A. The controller shall be connected to the transfer switch by an interconnecting wiring

harness. The harness shall include a keyed disconnect plug to enable the controller
to be disconnected from the transfer switch for routine maintenance.

B. The controller shall direct the operation of the transfer switch. The controller's
sensing and logic shall be controlled by a built-in microprocessor for maximum
reliability, minimum maintenance, inherent serial communications capability, and the
ability to communicate via the Ethernet through optional communications module

C. A single controller shall provide single and three phase capability for maximum
application flexibility and minimal spare part requirements. Voltage sensing shall be
true RMS type and shall be accurate to ± 1% of nominal voltage. Frequency
sensing shall be accurate to ± 0.1Hz. Time delay settings shall be accurate to ±
0.5% of the full scale value of the time delay. The panel shall be capable of
operating over a temperature range of -20 to + 70 degrees C, and storage from -55
to + 85 degrees C.

D. The controller shall be enclosed with a protective cover and be mounted separate
from the transfer switch unit for safety and ease of maintenance. Sensing and
control logic shall be provided on printed circuit boards.
E. The controller shall meet or exceed the requirements for Electromagnetic
Compatibility (EMC) as follows:
1. IEC 60947 – 6 – 1 Multiple Function Equipment Transfer Switching Equipment.
61000-4 Testing And Measurement Techniques - Overview
a. IEC 61000 – 4 - 2 Electrostatic Discharge Immunity
b. IEC 61000 – 4 - 3 Radiated RF Field Immunity
c. IEC 61000 – 4 - 4 Electrical Fast Transient/Burst Immunity

ASCO Power Technologies, Florham Park, New Jersey 07932. 800-937-ASCO

8-2016 2 Publication 3090 R11
 d. IEC 61000 – 4 - 5 Surge Immunity
e. IEC 61000 – 4 – 6 Conducted RF Immunity
2. CISPR 11 – Conducted RF Emissions and Radiated RF
Emissions
2.03 Enclosure

A. The 3ATS shall be furnished in a NEMA type 1 enclosure unless otherwise

shown on the plans.
B. Provide strip heater with thermostat for Type 3R enclosure requirements.
C. Controller shall be mounted on, visible, and operational through enclosure
door.
PART 3 OPERATIONS

3.01 Controller Display and Keypad

A. A 128*64 graphical LCD display and keypad shall be an integral part of the
controller for viewing all available data and setting desired operational parameters.
Operational parameters shall also be available for viewing and limited control
through communications port. The following parameters shall only be adjustable via
DIP switches on the controller.

1. Nominal line voltage and frequency

2. Single or three phase sensing on normal

3. Transfer operating mode configuration, (open transition, or delayed transition)

All instructions and controller settings shall be easily accessible, readable and
accomplished without the use of codes, calculations, or instruction
manuals.
3.02 Voltage and Frequency Sensing

A. Voltage and frequency on both the normal and emergency sources (as noted
below) shall be continuously monitored, with the following pickup ,dropout, and trip
settings capabilities (values shown as % of nominal unless otherwise specified.
Parameter Sources Dropout/Trip Pickup/Reset
Undervoltage N&E 70 to 98% 85 to 100%
Overvoltage N&E 102 to116% 2% below trip
Underfrequency N&E 85 to 98% 86 to 100%
Overfrequency N&E 101 to 111% 2% below trip

B. Repetitive accuracy of all settings shall be within 1% at +25C

C. Voltage and frequency settings shall be field adjustable in 1% increments

either locally with the display and keypad or remotely via serial communications port
access.

D. Source status screens shall be provided for both normal & emergency to provide
digital readout of voltage and frequency. Note: Single phase sensing on emergency
ASCO Power Technologies, Florham Park, New Jersey 07932. 800-937-ASCO
8-2016 10 Publication 3090 R11
 E. The backlit 128*64 graphical display shall have multiple language capability.
Languages can be selected from the user interface.
3.03 Time Delays

A. A time delay shall be provided to override momentary normal source outages and
delay all transfer and engine starting signals, adjustable 0 to 6 seconds. It shall be
possible to bypass the time delay from the controller user interface.

B. A time delay shall be provided on transfer to emergency, adjustable from 0 to 60

minutes 59 seconds for controlled timing of transfer of loads to emergency. It shall
be possible to bypass the time delay from the controller user interface.

C. A generator stabilization time delay shall be provided after transfer to emergency

adjustable 0 or 4 seconds.

D. A time delay shall be provided on retransfer to normal, adjustable 0 to 9 hours 59

minutes 59 seconds. Time delay shall be automatically bypassed if emergency
source fails and normal source is acceptable.

E. A cooldown time delay shall be provided on shutdown of engine generator,

Adjustable 0 to 60 minutes 59 seconds.

F. All adjustable time delays shall be field adjustable without the use of special tools.

G. A time delay activated output signal shall also be provided to drive an external
relay(s) for selective load disconnect control. The controller shall have the ability to
activate an adjustable 0 to 5 minutes 59 seconds time delay in any of the following
modes:

1. Prior to transfer only.

2. Prior to and after transfer.

3. Normal to emergency only.

4. Emergency to normal only.

5. Normal to emergency and emergency to normal.

6. All transfer conditions or only when both sources are available.

H. In the event that the alternate source is not accepted within the configured Failure
to Accept time delay, the common alert indication shall become active.

I. The controller shall also include the following built-in time delay for delayed transition
operation.

1. A time delay for the load disconnect position for delayed transition operation
adjustable 0 to 5 minutes 59 seconds.

ASCO Power Technologies, Florham Park, New Jersey 07932. 800-937-ASCO

8-2016 11 Publication 3090 R11
3.04 Additional Features

A. The user interface shall be provided with test/reset modes. The test mode will
simulate a normal source failure. The reset mode shall bypass the time delays on
either transfer to emergency or retransfer to normal.
B. A set of contacts rated 5 amps, 30 VDC shall be provided for a low-voltage engine
start signal. The start signal shall prevent dry cranking of the engine by requiring the
generator set to reach proper output, and run for the duration of the cool down.
setting, regardless of whether the normal source restores before the load is
transferred.

C. Auxiliary contacts, rated 10 amps, 250 VAC shall be provided consisting of one
contact, closed when the ATS is connected to the normal source and one contact
closed when the ATS is connected to the emergency source.

D. A single alarm indication shall light up the alert indicator and de – energize the
configured common alarm output relay for external monitoring.

E. LED indicating lights shall be provided; one to indicate when the ATS is connected to
the normal source (green) and one to indicate when the ATS is connected to the
emergency source (red).
F. LED indicating lights shall be provided and energized by controller outputs. The
lights shall provide true source availability of the normal (green) and emergency
(red) source, as determined by the voltage sensing trip and reset settings for each
source.
G. LED indicating light shall be provided to indicate switch not in automatic mode
(manual); and blinking (amber) to indicate transfer inhibit.
H. LED indicating light shall be provided to indicate any alarm condition or active time
delay (red).

The following features shall be built – in to the controller, but capable of being
activated through keypad programming or the serial port only when required
by the user:

I. Provide the ability to select “commit/no commit to transfer” to determine whether the
load should be transferred to the emergency generator if the normal source restores
before the generator is ready to accept the load.

J. A variable window inphase monitor shall be provided in the controller. The monitor
shall control transfer so that motor load inrush currents do not exceed normal
starting currents, and shall not require external control of power sources. The
inphase monitor shall be specifically designed for and be the product of the ATS
manufacturer. The inphase monitor shall be equal to ASCO feature 27.

K. An engine generator exercising timer shall be provided to configure weekly and bi-
weekly automatic testing of an engine generator set with or without load for 20
minutes fixed. It shall be capable of being configured to indicate a day of the week,
and time weekly testing should occur.

The following feature shall be built – into the controller, but capable of being
activated through keypad programming, communications interface port, or
additional hardware.

ASCO Power Technologies, Florham Park, New Jersey 07932. 800-937-ASCO

8-2016 12 Publication 3090 R11
 L. Terminals shall be provided for a remote contact to signal the ATS to transfer to
emergency. This inhibit signal can be enabled through the keypad or serial port.

M. System Status - The controller LCD display shall include a “System Status”
screen which shall be readily accessible from any point in the menu by
depressing the “ESC” key. This screen shall display a clear
description of the active operating sequences and switch position. For
example,
Normal Failed
Load on Normal
TD Normal to Emerg
2min15s
Controllers that require multiple screens to determine system status or
display “coded” system status messages, which must be explained by
references in the operator’s manual are not permissible.

N. Self Diagnostics – The controller shall contain a diagnostic screen for the purpose of
detecting system errors. This screen shall provide information on the status input
signals to the controller which may be preventing load transfer commands from
being completed.
O. Communications Interface – The controller shall be capable of interfacing, through
an optional serial communication port with a network of transfer switches, locally (up
to 4000 ft.). Standard software specific for transfer switch applications shall be
available by the transfer switch manufacturer. This software shall allow for the
monitoring, control, and setup of parameters.

P. Data Logging – The controller shall have the ability to log data and to maintain the
last 99 events, even in the event of total power loss. The following events shall be
time and date stamped and maintained in a non – volatile memory.

1. Event Logging
1. Data and time and reason for transfer normal to emergency
2. Data and time and reason for transfer emergency to normal
3. Data and time and reason for engine start
4. Data and time engine stopped
5. Data and time emergency source available
6. Data and time emergency source not available

2. Statistical Data
1. Total number of transfers
2. Total number of transfers due to source failure
3. Total number of day’s controller is energized
4. Total number of hours both normal and emergency sources are
Available
5. Total time load is connected to normal
6. Total time load is connected to emergency
7. Last engine start
8. Last engine start up time
9. Input and output status

ASCO Power Technologies, Florham Park, New Jersey 07932. 800-937-ASCO

8-2016 13 Publication 3090 R11
4.01 Optional Features (The following section is optional and should be deleted if
not required)

A. Accessory Package - An accessory bundle shall be provided that includes:

1. A fully programmable engine exerciser with seven independent routines to

exercise the engine generator, with or without load on a daily weekly, bi – weekly,
or monthly basis.

2. Event log display that shows event number, time and date of events, event type,
and reason (if applicable). A minimum of 300 events shall be stored.

3. RS – 485 communications port enabled.

4. Common alarm output contact.

(This feature shall be equal to ASCO accessory 11BE, and shall be capable of being
activated for existing switches through optional accessory dongle).

B. Controller Power Supply - A backup power UPS shall be provided to allow

controller to run for 3 minutes minimum without AC power. (This feature shall be
equal to ASCO accessory 1UP, and shall be capable of being added to existing
switches without modification).

C. Expansion Module - A relay expansion module (REX) is a standard feature when

delayed transition transfer is specified. A REX module shall also be provided for
open transition transfer that includes one form C contact for source availability of the
normal (18G) and emergency (18B) sources. Additional output relay shall be
provided to indicate a common alarm. The REX module shall have the capability of
being daisy chained for multiple sets of contacts. (This feature shall be equal to
ASCO accessory 18RX, and shall be capable of being added to existing switches
without modification).

D. Current Sensing Card - A load current metering card shall be provided that
measures either single or three phase load current. It shall include current
transformers (CT’s) and shorting block. Parameters shall be able to be viewed via
the user interface. (This feature shall be equal to ASCO accessory 23GA (single
phase), 23GB (three phase), and shall be capable of being added to existing
switches without modification).

E. Communications Module – Shall provide remote interface module to support monitoring of

vendor’s transfer switch, controller and optional power meter. Module shall provide status,
analog parameters, event logs, equipment settings & configurations over embedded webpage
and open protocol. Features shall include:

1. Email notifications and SNMP traps of selectable events and alarms may be sent to a
mobile device or PC.
2. Modbus TCP/IP, SNMP, HTTP, SMTP open protocols shall be simultaneously supported.
3. Web app interface requiring user credentials to monitor and control the transfer switch
supporting modern smart phones, tablets and PC browsers. User will be able to view the
dynamic one-line, ATS controls status, alarms, metering, event logging as well as settings.
4. Secure access shall be provided by requiring credentials for a minimum of 3 user privilege
levels to the web app, monitor (view only), control (view and control) and administrator
(view, control and change settings). 128-Bit AES encryption standard shall be supported
for all means of connectivity.

ASCO Power Technologies, Florham Park, New Jersey 07932. 800-937-ASCO

8-2016 14 Publication 3090 R11
 5. Shall allow for the initiating of transfers, retransfers, bypassing of active timers and the
activating/deactiviting of engine start signal shall be available over the embedded webpage
and to the transfer switch vendor’s monitoring equipment.
6. An event log displaying a minimum of three-hundred (300) events shall be viewable and
printable from the embedded webpages and accessible from supported open protocols.
7. Four (4) 100 Mbps Ethernet copper RJ-45 ports, two (2) serial ports, and LEDs for
diagnostics.
8. DIN rail mountable.

This option shall be equivalent to ASCO accessory 72EE

F. Transfer Alarm - An audible alarm with silencing feature shall be provided to signal
each time transfer to emergency occurs. (This feature shall be equal to ASCO
accessory 62W).

G. Enclosure Heater - A 125 watt enclosure heater with transformer and thermostat
(adjustable from 30 to 140  F) shall be provided for outdoor installations where
type 3R, 4, are specified. (This feature shall be equal to ASCO
accessory 44G, and shall be capable of being added to existing switches).
H. Surge Suppression – A TVSS with a surge current rating of 65kA shall be provided
with individually matched fused metal oxide varistors (MOVs). It shall include LED
status indication of normal operation, under voltage, power loss, phase loss or
component failure. Shall include form C dry contacts for external alarm or
monitoring. The unit shall be enclosed
rd
in a Noryl housing rated NEMA 4, 12, and
4X. Shall comply with UL 1449 3 edition (This feature shall be equal to ASCO
accessory 73, and shall be capable of being added to existing switches).

*Note Spec Writer: The following section is optional and should be deleted if not required.

I. Power Meter – (This feature shall be equal to ASCO accessory 135L, or

feature bundle accessory 150*).

The Power Meter shall conform to the requirements of:

1. UL 3111-1-Electrical Measuring and Testing Equipment
2. CAN/CSA-C22.2 No. 23-M89-CSA Safety Requirements for Electrical and
Electronic Measuring and Test Equipment

3. The Power Meter shall be capable of operating without modification at a

nominal frequency of 45 to 66Hz.

4. The Power Meter shall be rated for an operating temperature of -4°F to 158°F
and a storage temperature of -22°F to 176°F. and shall be rated for an 85%
non-condensing, relative humidity.

5. The Power Meter shall accept inputs from industry standard instrument
transformers (120 VAC secondary PT’s and 5A secondary CT’s). Direct phase
voltage connections, 0 to 600VAC nominal, shall be possible without the use of
PT’s.

6. The Power Meter shall accept single, 3 phase, or three & four wire circuits. A
fourth CT input shall be available to measure neutral or ground current.

ASCO Power Technologies, Florham Park, New Jersey 07932. 800-937-ASCO

8-2016 15 Publication 3090 R11
 7. The Power Meter shall contain a built-in discrete contact to wire an ATS 14A
auxiliary contact to indicate switch position.

8. The Power Meter shall accept AC voltage from the sensing lines for operation.
Additional provisions shall be provided for external DC voltage input range 9-36
VDC with a nominal of 24 VDC.

9. The Power Meter shall be equipped with a continuous duty, long –life, 4 line x
20 character green backlit LCD

10. All setup parameters required by the Power Meter shall be stored in non-
volatile memory and retained in the event of a control power interruption.

11. The Power Meter shall be flush mountable on a surface.

12. The Power Meter enclosure shall be sealed to IP-51 (NEMA 1) and the
faceplate shall be sealed to IP-65 (NEMA 4). All push buttons shall be sealed
tact switches.

13. The Power Meter shall send, when prompted, information to a central location
equipped with a manufacturer supplied critical power management system or
3rd party monitor through manufacturer supplied communication modules. All
3rd party monitor must utilize industry standard open protocols
Modbus/RTU.Modbus/TCP or SNMP.

14. An embedded RS-485 port will be provided which will enable communication
at 9600, 19.2K, 38.4K, or 57.6K baud. DIP switches will be provided on the
RS-485 port allowing a user to select 2-wire or 4-wire communication as well
as the option to activate a terminating resistor on the port.

15. The Power Meter shall help facilities comply with NEC 220. It shall provide
Maximum Demand calculations for the past 24 months, as per standards with
15 minute averages.

16. The following data will be available on the display and Modbus registers of
the Power Meter:
● Line-to-neutral voltages (VAN, VBN, and VCN)
● Line-to-neutral voltage average (V AVE)
● Line-to-line voltages (V AB, VBC, and VCA)
● Line-Line voltage average (V LAVE)
● Current on each phase (I A,IB,and IC)
● Current on the neutral conductor (I N)
● Average current (I AVE)
● Active power, KW per phase and total (W A,WB,WC, and WT)
● Apparent power, KVA per phase and total (V AA, VAB, VAC, and VAT)

● KWHours importing, exporting and net (KWH IMP, KWHEXP, and

ASCO Power Technologies, Florham Park, New Jersey 07932. 800-937-ASCO
8-2016 16 Publication 3090 R11
 KWH NET)
● KVARHours leading, lagging and net (KVARHLEAD, KVARLAG, and
KVARHNET)
● Power factor (PF)
● Signal Frequency (Hz)
● Digital Input

17. The Power Meter shall offer an LCD which can display no less then
nine different languages.

18. Displaying each of the metered values shall be done through the use of
menu scroll buttons. There will be an escape button which will be used to
take the user back to the previous page or to cancel a setting change.
Pressing escape no more than three times will return the user to the
home screen.

19. For ease of operator viewing, the display can be configured to remain on
continuously, with no detrimental effect on the life of the Power Meter.

20. The display’s contrast shall be configurable in intervals of 10% (ranging

0%-100%).

21. Setup of a system requirements shall be allowed from the front of the
Power Meter.

*Note Spec Writer: The following section is optional and should be deleted if not required.

5.01 ATS Remote Annunciator

General
Provide and install ATS Remote Annunciators for monitoring and control of automatic transfer
switches remotely over Ethernet.

A. Hardware Specifications
The ATS Remote Annunciator shall be listed to cUL-60950-1 and UL 1008 and include the
following features and ratings:
 User-configured labels with ATS names and power sources
 Dual 10/100 Base-T auto sensing and auto crossover Ethernet ports
 LED indication of source acceptability, switch position, common alarm, time delay and
Ethernet link activity
 Push button for transfer/retransfer control operations and time delay bypass
 Push buttons for Alarm Silence and Lamp Test
 Key lock to enable and disable the transfer push button

ASCO Power Technologies, Florham Park, New Jersey 07932. 800-937-ASCO

8-2016 17 Publication 3090 R11
  Audible and visual alarm to indicate Communication Error ATS Locked Out Failure to
Synchronize Extended Parallel and any of the 8 user-configured discrete inputs
 Programmable watchdog timer that can generate a system reset upon timeout (minimum
1 sec)
 Factory reset capability
 100 ms power ride-through

B. Software Specification
The ATS Remote Annunciator shall contain embedded web pages accessible via various web
browsers with the following capabilities:
 Configuration for protocol and communications management with the ability of auto
discovering transfer switches on network
 Ability to create and print customized labels for ATS names and power sources
 The ability to choose a continuous or periodic audible alarm with customizable interval
time
 View detailed packet status counters i.e. transmitted received and dropped packets with
the ability to reset counters
 ATS source name configuration page which allows users to configure power source
names and print labels
 Upgrade firmware from Ethernet network without interrupting equipment operation

C. Communications
Dual 10/100 Base-T (RJ-45) Ethernet ports are provided to support TCP/IP communications for
up to eight automatic transfer switches via individual remote connectivity modules or daisy-
chained serial modules into a single Connectivity Module. Additional features include:

 Supports Full Duplex Flow Control (IEEE 802.3x)

 3.3V power supply with 5V I/O tolerance
 Supports 3 LEDs to indicate traffic link speed and collision

D. Mounting
The ATS Remote Annunciator is suitable for:
 Surface mounting using mounting screws studs
 Flush Mount from behind a cutout section (Enclosure Door Mounting)
 Flush Mount from the front of a cutout section (Enclosure Door Mounting)

E. Power Supply
The ATS Remote Annunciator shall be capable of accepting 24VDC, 120 VAC or
240 VAC power source.

F. Environmental
The ATS Remote Annunciator shall have an Ambient Operating Temperature range of
-4 º to 158 º F (-20 º to +70 º C) @ 5~85% humidity and Ambient Storage Temperature of -40 º to
185 º F (-40 º to 85 º C).

ASCO Power Technologies, Florham Park, New Jersey 07932. 800-937-ASCO

8-2016 18 Publication 3090 R11
PART 6 ADDITIONAL REQUIREMENTS

6.01 Withstand and Closing Ratings

A. The ATS shall be rated to close on and withstand the available RMS symmetrical
short circuit current at the ATS terminals with the type of overcurrent protection
shown on the plans. WCR ATS ratings shall be as follows when used with specific
circuit breakers:
ATS Size Withstand & Closing W/CLF
Rating MCCB
(480v/60hz)
30 22,000A 100,000
70 - 200 22,000A 200,000
230 25,000A 100,000
260 – 400 42,000A 200,000
600 50,000A 200,000
800 – 1200 65,000A 200,000
1600 – 2000 85,000A 200,000
2600 – 3000 100,000A 200,000

6.02 Tests and Certification

A. The complete 3ATS shall be factory tested to ensure proper operation of the
individual components and correct overall sequence of operation and to ensure that
the operating transfer time, voltage, frequency and time delay settings are in
compliance with the specification requirements.

B. Upon request, the manufacturer shall provide a notarized letter certifying compliance
with all of the requirements of this specification including compliance with the above
codes and standards, and withstand and closing ratings. The certification shall
identify, by serial number(s), the equipment involved. No exceptions to the
specifications, other than those stipulated at the time of the submittal, shall be
included in the certification.

C. The ATS manufacturer shall be certified to ISO 9001: 2008 International Quality
Standard and the manufacturer shall have third party certification verifying quality
assurance in design/development, production, installation and servicing in
accordance with ISO 9001: 2008.

6.03 Service Representation

A. The ATS manufacturer shall maintain a national service organization of company-

employed personnel located throughout the contiguous United States. The service
center's personnel must be factory trained and must be on call 24 hours a day, 365
days a year.

B. The manufacturer shall maintain records of switch shipments, by serial number, for a
minimum of 20 years.

C. For ease of maintenance, the transfer switch nameplate shall in clude drawing
numbers and serviceable part numbers.

ASCO Power Technologies, Florham Park, New Jersey 07932. 800-937-ASCO

8-2016 19 Publication 3090 R11