Brochures and Data Sheets

9
4000 S
ERIES USER INTERFACE
User Interface Features
•
Convenient One Line Diagram
- Provides a clear view of
the position of the transfer switch, as well as the
acceptability of the Normal and Emergency sources.
•
Source Acceptability LEDs
- Provide true indication of the
acceptability of each source, as determined by the volt-
age, frequency, voltage unbalance, and phase sequence
settings of the control panel.
•
Transfer Switch Position LEDs
- Provide an indication of
which source the transfer switch is connected to.
•
Transfer Test -
Allo
ws the user to test the operation of
the transfer switch under a simulated failure of the nor-
mal source. Holding for 15 seconds allows time for the
engine generator to come online and the transfer
switch to transfer the load.
•
Retransfer to Normal -
Allows the user to bypass the
programmed Retransfer to Normal time delay upon the
return of the normal source when the switch has trans-
fered to emergency either during normal operation or a
transfer test.
•
Lamp Test
- Provides a convenient way to verify the
functionality of all LEDs on the User Interface.
•
User Controls Locked
- Visually displays the status of
the keypad lock feature of the control panel. When
illuminated, the buttons of the User Interface are
disabled and the user must enter a password into the
control panel to unlock the switch. When LED is blink-
ing, the controls are temporarily unlocked for five
minutes from the last button pressed.
Additional Closed Transition User
Interface Features
•
Extended Parallel Time
- Provides visual indication when
the pre-set extended parallel time has been exceeded.
The controls automatically open the emergency or nor-
mal main contacts. Separate contact also available to
shunt trip to an external breaker.
•
Failure To Synchronize
- Visually displays a failure to syn-
chronize alarm if the time delay settings is exceeded,
during closed transition transfer operation.
•
Transfer Switch Locked Out
- Prevents transfer in either
direction if the extended parallel time is exceeded.
•
Alarm Reset
- Resets extended parallel and failure to
synchronize alarms.
•
Closed Transition Bypass
- Pu
shbutton allows transf
er
between sources in an open transition mode.
Fig. 8:
4000 SERIES Closed Transition User Interface
Fig. 7:
4000 S
ERIES Open Transition User Interface