Specifications

102 Distribution Products Catalog CA08101001E—October 2010 www.eaton.com
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16.6
Tr a n s f er Switches
Standard and Optional Features
Source 1 Sensing
26. Source 1—Monitoring
and Protection
Provides Source 1 monitoring
and protection functions. If
Source 1 fails, then the
automatic transfer controller
will begin the sequence of
operations necessary to
transfer the load to Source 2.
All Feature 26 monitoring
and protection functions are
fail-safe operations.
26H. Three-Phase
Rotation Protection
Provides three-phase reversal
sensing in order to protect
against transferring
to an out-
of-phase source. The controller
will treat the opposite source
as unavailable if the sources
are out of phase, based on
programmable set points in
the controller.
26J. All-Phase Undervoltage/
Underfrequency Protection
Provides all-phase
undervoltage/underfrequency
monitoring and protection
based on programmable set
points in the controller.
26K. All-Phase Overvoltage/
Overfrequency Protection
Provides all-phase
overvoltage/overfrequency
monitoring and protection
based on programmable set
points in the controller.
26L. Three-Phase Voltage
Unbalance/ Phase Loss
Provides phase loss detection
from blown fuses on the
Source 1.
26M. Generator Utility Sensing
Allows for the switch to
operate with generators that
have internal utility sensing.
This option comes as a kit
that needs to be field
installed.
26N. All-Phase Undervoltage
Protection
Provides undervoltage
protection for Source 1
(ATC-100 Controller only).
Source 2 Sensing
5. Source 2—Monitoring
and Protection
Provides monitoring and
protection based on the
Source 2 voltage and/or
frequency set points. All
Feature 5 monitoring and
protection functions are
fail-safe operations.
5J. All-Phase Undervoltage/
Underfrequency Protection
Provides undervoltage/
underfrequency monitoring
and protection based on
programmable set points
in the controller.
5K. All-Phase Overvoltage/
Overfrequency Protection
Provides overvoltage/
overfrequency monitoring
and protection based on
programmable set points in
the controller.
5H. Three-Phase Rotation
Protection
Provides three-phase reversal
sensing in order to protect
against transferring
to an out-
of-phase source. The controller
will treat the opposite source
as unavailable if the sources
are out of phase, based on
programmable set points in
the controller.
5L. Three-Phase Voltage
Unbalance/Phase Loss
Provides phase loss detection
from blown fuses on the
Source 2 supply circuit.
Manual Controls
6B. Best Operators
Automatic transfer switches
are provided with a test
pushbutton that simulates
a loss of the Source 1 as
standard. All programmed
time delays (TDNE, TDEN,
etc.) will be performed as part
of the test. Engine run time
of the test is equal to the
plant exerciser programmed
set point. All tests are fail-
safe protected.
6H. 4-Position Test Selector
Switch (FPSS)
Provides a 4-position,
maintained contact selector
switch marked “Auto,”
“Test,” “Engine Start,” and
“Off.” The FPSS is fail-safe
protected, except for the
“Off Position.” Transfer
switch operation is
determined by the switch
position. Transfer switch
operations are as follows:
“Auto”—Automatic
operation mode.
“Test”—A load test is
performed until the switch is
moved to another position.
“Engine Start”—A no-load
test is performed until
the switch is moved to
another position.
“Off”—The automatic
transfer controller and engine
start contact are disabled. A
white pilot light is provided to
indicate that the FPSS is in
the “Off” position.
Note: This option will force the
switch to be marked as non-
automatic based on UL 1008.
8. Time Delay Bypass
Pushbutton
Provides a momentary
contact pushbutton to bypass
the TDNE (Feature 1) and/or
TDEN (Feature 2) time
delays. The Time Delay
Bypass Pushbutton contact,
when closed, will reduce any
or all of the programmed time
delay to zero. Must be
executed when TDNE or
TDEN timer is displayed on
the controller.
8C. Bypass Time Delay
Emergency to Normal (TDEN)
8D. Bypass Time Delay Normal
to Emergency (TDNE)
9B. Maintenance Selector
Switch (MSS)
Provides a 2-position,
maintained contact selector
switch marked “Operate”
and “Disable.” When the
MSS is placed in the
“Disable” position, the
controller logic will be
disconnected from the
transfer motor circuit. The
MSS is placed in the
“Operate” position for
normal automatic operation.
29. Transfer Operation Modes
Provides standard or optional
transfer modes, mode
selection devices and
operational methods for
Transfer Switches.
29G. Automatic/Manual
Operation With Selector Switch
Provides 2-position selector
switch (labeled Auto/manual)
that permits selection of the
automatic or manual transfer.
When in the “Auto” position,
the transfer switch operates
with fully automatic transfer,
retransfer and generator
startup and shutdown
operations. When in the
“Manual” position, manual
operation is required to
initiate the generator startup
or retransfer with generator
shutdown operations.
Note: Transfer switches with
Feature 29G must be labeled as
non-automatic transfer switch
equipment.