Export Override; Pwrcell Safety - Generac Power Systems PWRcell Reference Manual

Table 1-3. Island Mode AC Short Circuit
Current Contribution
Peak AC short-circuit current contribution
Peak output fault current duration
Peak output RMS fault current
Max 3-Cycle RMS output fault current
Max fault current duration (Current limit in
overload 32 A rms)

Export Override

NOTE: This feature requires CTs to be properly installed
and calibrated prior to use. For more information on CT
calibration, see the PWRcell Inverter Installation and
Owner's Manual.
NOTE: This feature is NOT intended to serve as a
means of achieving compliance to Utility interconnection
requirements. For information on export limiting settings
related to Utility compliance, see the PWRcell Inverter
Installation and Owner's Manual.
While related to system operation, Export Override is an
inverter setting, not a system mode. When enabled,
Export Override allows the user to restrict inverter export
such that excess power is not sent back to the grid. The
system limits solar power generation to match power
consumption measured by the PWRcell CTs. This feature
is suitable as a simple and easy option for systems
pending permission to operate (PTO) where the Utility
does not specify a requirement for the system to be de-
energized or otherwise disabled pending approval. Using
the Inverter control panel, a user can find this feature on
the "Mod. Settings" sub-menu within the Inverter device
page.

PWRcell Safety

System Shutdown
1. See Figure 1-10. Initiate an inverter shutdown by
pressing and holding the red shutdown button (A).
A B
Figure 1-10. Inverter Control Panel
2. See Figure 1-11. Turn off battery disconnect
switch on battery cabinet.
Diagnostic Repair Manual
370 A p-p
300 us
125 A rms
47.7 A rms
6.23 s
3. Allow REbus DC voltage to drop below 10 VDC
4. See
lifting the bottom to horizontal (C) and pushing
inward (D).
5. Open all PWRcell DC Disconnects (E). Verify DC
voltage reported on LCD screen has dropped to
below 10 VDC.
6. Disconnect AC Grid source from inverter. Wait for
Inverter LCD screen to turn off.
7. Verify all sources of AC and DC power are
disconnected.
Shutdown Mode
NOTE: A loss of grid power will not de-energize REbus
in a PWRcell system with enabled energy storage.
Shutdown button (Item A,
transition to shutdown system mode.
Disabled PWRcell equipment limits output voltages to a
safe level for servicing.
NOTE: The AC section of the inverter will still be
energized unless the building AC disconnect or main
009894
service breaker is shut off.
To enter shutdown, press and hold shutdown button.
In shutdown mode:
Section 1 The PWRcell System
ON
Figure 1-11. Battery Disconnect Switch
1-12. Open Inverter front cover by
Figure
D
C
E
Figure 1-12. PWRcell DC Disconnects
DANGER
Electrocution. Initiate a system-wide shutdown and turn the
PWRcell DC Disconnect Switch OFF on all connected
batteries before performing service. Failure to do so will
result in death, serious injury, or equipment and property
damage.
Figure
OFF
009896
010238
(000600)
1-10) activates a
5