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| Standard
Operational Features, Controls and Status Indicators |
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Standard
Selectable Features
- Inphase
monitor to transfer motor loads, without any intentional
off time to prevent motor inrush currents from exceeding
normal starting levels.
- Engine
exerciser to automatically test backup generator each week.
Includes control switch for testing with or without load.
- Selective
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.
- 60
Hz or 50 Hz selector switch.
- Three-phase/single-phase
selector switch.
Voltage
& Frequency Sensing
- Adjustable
three-phase, close differential voltage sensing on normal
source.
- Normal
source pickup voltage is adjustable to 95% of nominal;
drop-out is adjustable from 70 to 90% of nominal.
- Frequency
sensing on emergency source. Pickup at 95% and dropout at
85% of nominal.
Time
Delays
- Adjustable
time delay to override momentary normal source outages to
delay all transfer switch and engine-starting signals.
- Transfer
to emergency time delay. Adjustable from 0 to 5 minutes
for controlled timing of load transfer to emergency.
- Retransfer
to normal time delay. Adjustable to 30 minutes.
- Five-minute
unloaded running time delay for emergency engine generator
cool down.
- Four-second
time delay to override momentary to ignore momentary
voltage and frequency transients during initial genset
loading.
Standard
Control Contacts
- Switch
position indicating contacts (rated 10 amps 250VAC,
32VDC). (1) for Normal position, (1) for Emergency
position.
- Gold
plated engine start contacts (rated 5 amps 28VDC or
120VAC).
Remote
Control Features
Terminal
provisions for connecting:
- Remote
test switch.
- Remote
contact for test or for peak shaving applications. Circuit
will be automatically bypassed if emergency source fails.
- Inhibit
transfer to emergency.
- Remote
time-delay bypass switch
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 Product
Features
- Nominal
voltage 120/240 V 60 Hz, single phase.
- Listed
to UL1008 Transfer Switch Equipment and CSA Certified to CSA 22.2 No.
178-1978 Automatic Transfer Switches.
- Meets
National Electrical Code (NEC) and National Fire Protection
Association (NFPA) requirements.
- True
double-throw contacts (no intentional off position), with inherent
mechanical interlocking to prevent connection of generator and utility
source.
- Convenient
terminals to connect neutral and ground conductors from service and
load feeders.
- Available
in Type 1 (indoor) and Type 3R (outdoor) enclosures.
- Manually-operated
Series 165 Transfer Switches are also available.
- Available
from stock.
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Time
Delay Functions
- 3-second
time delay to override momentary utility source.
- 15-second
transfer to emergency time delay to allow engine generator to
stabilize after starting.
- 15-second
time delay after transfer to the standby source to ignore momentary
voltage dips on the generator during initial loading.
- 5-minute
time delay on retransfer to allow utility source to stabilize prior to
transferring the load back to utility.
- 1-minute
unloading running time delay for engine generator cool-down before
shutdown.
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| Control
Panel
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| Diagnostic
Indicators
The
165 Automatic Transfer Switch has a unique built-in automatic digital
diagnostic monitoring system, which provides status on potential system
problems such as: generator failed to start; generator over frequency;
transfer switch did not transfer; and more. It's one more way you can
count on ASCO to provide continuous power protection ...anytime. |
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to 2000KW
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