Installation manual

Safety
975-0601-01-01 Revision B xiii
This manual is for use by qualified personnel only.
8. Open, lock out, and tag out the AC output (grid) circuit at its external
disconnect switch provided by the installer as part of the installation.
9. Open, lock out, and tag out the external auxiliary AC source (if used) at its
external disconnect means provided by the installer as part of the
installation.
10. Wearing appropriate personal protective equipment and using a voltmeter
with minimum ratings of 1000 volts AC and DC that has been tested on a
known AC voltage source and a known DC voltage source before use, verify
that all external circuits are de-energized by checking for zero voltage at all
of the following locations:
• PV input: Measure the voltage from DC+ and DC- to ground and from
DC+ to DC- at the inverter side of the external disconnecting means
provided as part of the installation.
• AC output (grid): Measure the voltage from each phase to ground and
each phase to the other phases at the inverter side of the external
disconnecting means provided as part of the installation.
• External auxiliary AC source (if used): Measure the voltage from each
phase to ground and from phase to phase at the inverter side of the
external disconnecting means provided as part of the installation.
11. Wait five minutes for internal capacitors to discharge before opening
additional doors or covers.
Figure i
AC circuit breaker
PUSH TO OPEN
button
PUSH TO CLOSE
button
Indicates open or
closed status