GE Industrial Solutions ZBTSD Series - Manual (Page 21)

71R -4000B 19 ■ ZBTS / ZBTSD Operation & Maintenance Manual
Testing
ATS Testing
Start generator and verify proper voltage, frequency and
phase sequence (match to Source 1). Shut down gen set
and place in Auto. Complete the visual inspection of the
transfer switch, and close the cabinet door.
Initiate the test by pressing the TEST button on the LCD
keypad. The controller will then prompt for your access
code. After entering the code, three test options will appear—
XFR LOAD, FAST TEST and NO XFR (See Figure 12).
• XFR LOAD test starts the generator and using the
current timer settings, transfers the load to Source 2.
• FAST TEST test presets timer values to a maximum
30 seconds during the test. After completion of
the test, all timers are reset to their original
values. (T3, W3, DT and DW remain)
• NO XFR test starts the generator but does not
transfer the load to the Source 2.
Press and hold the desired test option button until
the switch transfers to Source 2 (load test) or until the
generator has been run for the desired amount of time
(no load test). Releasing the test button before W timer
timeout will abort the test (Exception: when the transfer
commit option, is configured “ON”).
To test lamps, press TEST then scroll through MORE, then
press LAMP TEST. To cancel LAMP TEST press MORE.
Standard Transition
When the test is initiated, the controller initiates the Time
Delay Source 2 Start Timer (Engine Start Timer “P”) cycle.
A manual CANCEL button is provided to cancel the test
if desired. Upon completion of the (P) time delay, an Engine
start Signal is sent to Source 2. When Source 2 voltage and
frequency reach the preset “Restore” Values, the time delay
to Source 2 Timer (W) begins its timing cycle to ensure
voltage and frequency stabilization before transfer. A manual
pushbutton BYPASS is provided to bypass the “W” time
delay if desired. After the (W) time delay, the MX controller
initiates a transfer signal through the SCR-E to operate the
main transfer operator. The load is now transferred to
Source 2 line. The transfer switch is mechanically locked.
SN limit switch awaits the next operation to Source 1.
Restoration of Source 1 Power:
Deactivating the test switch initiates re-transfer to Source 1
sequence. The delay to Source 1 Timer (T) begins its
timing cycle to ensure voltage and frequency stabilization
before retransfer. A manual pushbutton BYPASS is provided
to bypass the “T” time delay if desired. After the (T) time
delay, the MX controller initiates a transfer signal through
the SCR-N to operate the main transfer operator. The load
is now transferred to Source 1 line. The transfer switch is
mechanically locked. SE limit switch awaits the next
operation to Source 2.
Immediately after re-transfer,
the S2 Stop Delay Timer (Delay
to Engine Stop “U”) begins
its cycle to allow Source 2
Engine to run unloaded. A
manual pushbutton BYPASS
is provided to bypass the “U”
time delay if desired. Upon
completion of the (U) timing
cycle, the controller sends
an Engine stop signal.
Delayed Transition
Source 1 Power Failure:
When the test is initiated, the controller initiates the Time
Delay Source 2 Start (Engine Start Timer “P”) cycle. A
manual CANCEL button is provided to cancel the test if
desired Upon completion of the (P) time delay, an Engine
start Signal is sent to Source 2. When Source 2 voltage
and frequency reach the preset “Restore” values, the time
delay to open Source 1 timer (W) begins its timing cycle
to ensure voltage and frequency stabilization before re-
transfer. A manual pushbutton BYPASS is provided to
bypass the “W” time delay if desired. After the (W) time
delay, the MX controller initiates a transfer signal through
the SCR-NO to operate the main transfer operator. The
load is now transferred to the Open position. The time
delay to Source 2 timer (DW) begins its timing cycle.
After the (DW) time delay, the MX controller initiates a
transfer signal through the SCR-E to operate the main
transfer operator. The load is now transferred to Source 2
line. The transfer switch is mechanically locked. SN
limit switch awaits the next operation to Source 1.
Restoration of Source 1 Power:
Deactivating the test switch initiates re-transfer to Source 1
sequence. The delay to open Source 2 Timer (T) begins
its timing cycle to ensure voltage and frequency stabilization
before retransfer. A manual pushbutton BYPASS is provided
to bypass the “T” time delay if desired. After the (T) time
delay, the MX controller initiates a transfer signal through
the SCR-EO to operate the main transfer operator. The
load is now transferred to the Open position. The time
delay to Source 1 timer (DT) begins its timing cycle. After
the (DT) time delay, the MX controller initiates a transfer
signal through the SCR-N to operate the main transfer
operator. The load is now transferred to Source 1 line.
The transfer switch is mechanically locked. SE limit switch
awaits the next operation to Source 2.
Immediately after re-transfer, the S2 Stop Delay Timer
(Delay to Engine Stop “U”) begins its cycle to allow
Source 2 Engine to run unloaded. A manual pushbutton
BYPASS is provided to bypass the “U” time delay if
desired. Upon completion of the (U) timing cycle,
the controller sends an Engine stop signal.
S Y S T E M T E S T
F A S T X F R N O
M O R E T E S T L O A D X F R
A periodic test of the transfer switch under load conditions is recommended to insure proper operation.
(See National Electric Code articles 700 and 701)
NOTICE
Figure 12