Specifications

February 2007
CA08101001E For more information visit: www.eaton.com
16-47
Transfer Switches
16
Transfer Switch Equipment
Transfer Switch — Standard and Optional Features
Transfer Switch — Standard and
Optional Features (Continued)
5L. Three-Phase Voltage Unbalance/
Phase Loss
Provides phase loss detection from
blown fuses on the Source 2 supply
circuit.
Manual Controls
6B. Test 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 push-
button 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 con-
tact 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” posi-
tion 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, re-transfer and
generator startup and shutdown
operations. When in the “Manual”
position, manual operation is required
to initiate the generator startup or
re-transfer with generator shutdown
operations.
Note: Transfer switches with Feature 29G
must be labeled as Non-Automatic Transfer
Switch equipment.
29J. Automatic Transfer or Automatic
Transfer With Non-Automatic
Re-transfer Operation
Provides a field-selectable program-
mable set point that permits the transfer
switch to operate in one of the following
2 transfer modes (A or B).
A. Fully automatic operation.
B.
Automatic engine/generator startup
and automatic transfer operation
from Source 1 to Source 2. Manual
pushbutton operation is required
to initiate the re-transfer operation
and engine/generator shutdown.
The pushbutton for manual re-
transfer operation is included.
This is fail-safe protected.
10. Preferred Source Selector
Provides a means to designate either
Source 1 or Source 2 as the “Preferred”
source. The “Preferred” source is the
source that the transfer switch will
connect the load to if it is available.
Note: This is a programmable software
feature not an actual switch.
10B. Preferred Source Selector
Provides a programmable source
selector for use on systems comprised
of dual utility or utility and engine/
generator power sources.
10D. Preferred Source Selector
Provides a programmable source
selector for use on systems comprised
of dual engine/generator power
sources. (Dual engine starting circuits
are provided.)
Indications/and Status Display
12C. Source 1 — Load Connected
Provides a green indication that
indicates the load is connected to
Source 1 when lit.
12D. Source 2 — Load Connected
Provides a red indication that indicates
the load is connected to Source 2
when lit.
12G. Source 1 — Present
Provides a white or amber indication
“Depending on the Controller” that
Source 1 has power, however this
does not indicate whether Source 1
is acceptable.
12H. Source 2 — Present
Provides an amber indication that
Source 2 has power, however this
does not indicate whether Source 2
is acceptable.
Overcurrent Trip Indication
Available only with Integral Overcurrent
Protection (Feature 16). (Shown on
Automatic Transfer Controller Display.)
12L. Source 1 Trip Indication
The Automatic Transfer Controller
display will read “Lockout” if the
Source 1 circuit breaker is in the
“tripped” position.
12M. Source 2 Trip Indication
The Automatic Transfer Controller
display will read “Lockout” if the
Source 2 circuit breaker is in the
“tripped” position.
Customer Outputs
14. Relay Auxiliary Contacts
14C. Source 1 Present
Provides 4 Form “C” relay auxiliary
contacts. The relay is energized when
Source 1 is Present.