Specifications

7000 Series Optional Accessories
Page 12
Time Delays
2C An extended time delay on engine starting.
Adjustable from 0 to 60 min in 1 second steps.
Factory set at 5 minutes.
Note: 7000 Series controller provides a similar standard time delay
which can be extended to 60 minutes with an external 24
volt DC source.
Manual Controls for Automatic
Transfer Switches
6C Reset switch for manual retransfer to normal
with automatic retransfer in the event of
emergency source failure.
6D Selector switch for automatic/manual retransfer to
normal. Automatic bypass if emergency fails.
Engine Generator Controls and Accessories
12 Three position engine control selector switch.
Positions: 1 - Stop 2 - Automatic
3 - Engine Test
Note: Engine controls containing “engine stop” positions should
be located at the engine generator. (Consult ASCO for
application assistance).
Indicators
14A/14B Additional auxiliary contact sets to indicate
switch position. Two sets are standard. Specify
total number of sets if more are required.
18B Two-pole, double-throw contacts operate when
emergency source voltage is present at transfer
switch terminals.
18G Two-pole, double-throw contacts operate when
normal source voltage is present at transfer switch
terminals.
99 “Push-to-Test” feature on all pilot light indicators.
Customer Control Circuits
30A Load-shedding circuit initiated by opening of a
customer-supplied contact.
30B Load-shedding circuit initiated by removal of
customer-supplied control voltage. (Specify
voltage).
31Z Selective load disconnect control contacts (two
provided) which operate with time delay prior to
and/or after load transfer and retransfer.
43R Terminal block for all customer control connec-
tions on 30-150 amp only (standard on all other
sizes).
Neutral Conductor Options
• Solid neutral, with fully-rated terminals.
(AL-CU) UL Listed.
• Conventional neutral switching pole.
• Overlapping neutral transfer contacts. Allows
for proper ground-fault sensing and avoids
generator voltage transients during transfer.
Notes: Specify neutral option in catalog number,
see page 16 for instructions.
Extension Harness
37B Six foot (6’) extension harness to increase distance
between transfer switch and control panel on
open-type units.
Analog Load Metering Options
23B Three phase ammeter with selector switch (with
current transformers and shorting blocks).
24B Three phase voltmeter with selector switch.
Notes: Refer to ASCO 7000 Series Data Monitor on page 13
which provides voltage, frequency and power monitoring.
Serial Communications
72A Serial communication module for remote
communications to ASCO PowerQuest products.
Surge Protection - ASCO Pulsar 450 rated 40KA
73AC1 Normal source protection. (3∅, 4wire WYE)
73AC2 Emergency source protection. (3∅, 4wire WYE)
73AC3 Load side protection. (3∅, 4wire WYE)
Notes: Other distribution voltages available
(Contact ASCO).
Bypass Isolation Switch Options
14A1 Auxiliary contact to close in “Bypass to
Normal” position.
14B1 Auxiliary contact to close in “Bypass to
Emergency” position.
14T Auxiliary contact to close when transfer
switch is in “Automatic” position.
14U Auxiliary contact to close when transfer
switch is in “Isolate” position.
14V Auxiliary; contact to close when transfer
switch is in “Test” position.
ATS Bypass Isolation Drawout Features
(1000-2000 amperes)
82B Transfer switch lifting yoke to facilitate the
removal of the transfer switch from the drawout
carriage.
82C Automatic shutters to provide isolation of bus
stabs.
Notes: An externally operable quick-make, quick-break (QMQB), manual handle is available on some 7000 Series
product configurations. (Consult ASCO for guidance).