Entelli-Switch 250
■
GE Zenith Controls
5
■
Entelli-Switch 250 Operation and Maintenance Manual (71
R
-2000)
Installation
(cont’d)
NOTE
:
When the voltage and frequency
reach preset values, the Source 2
Available
LED
will illuminate.
7.
Verify the phase to phase voltages at Source 2
line terminals.
8.
Verify that the phase rotation of
Source 2 is the same as the phase
rotation of Source 1.
9.
Shut down the generator's engine.
(Place in Automatic Mode.)
NOTE
:
Source 2 Available LED
will turn off.
NOTE
:
The engine generator will continue
to run for the duration of Source 2
Stop Delay Timer.
10. Place the disconnect switch to
ENABLE
.
11. Complete the visual inspection of the
transfer switch.
12. Close the enclosure.
13. Lock the enclosure.
Figure 4 – LCD and keypad
Initial Energization
(cont’d)
After all options and accessories are checked and
verified, follow these steps to set up the ATS. Refer to
Entelli-Switch 250 display Figure 4. The annunciation
LEDs illuminate to indicate (1) source availability,
(2) ATS position, and (3) Entelli-Switch 250 control
function (timing).
1.
Unlock the enclosure.
2.
Open the enclosure.
3.
Place the Disconnect Switch in the Inhibit.
NOTE
:
This step is only performed if the
“DS” Option was purchased.
4.
Close the external (up-stream) Source 1
circuit breaker.
NOTES
:
Source 1 Available and Source 1
Position
LED
’s will illuminate.
If Source 1 Available
LED
does not
illuminate, verify that Source 1 Voltage
is above the preset restore value.
The Gen-Set will start and run while
Source 2 stop Delay Timer is timing.
5.
Close the External (up-stream) Source 2 line
circuit breaker.
6.
Start the engine generator in
MANUAL
mode.
WARNING
When performing a hi-pot or
dielectric test on the power section,
DISCONNECT
the control panel plugs from
the microprocessor to avoid potential damage.
S 1 O K
2 1 : 5 6
M O N 2 3 A P R 2 0 0 2
M O R E
T E S T
