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Maintenance Safety
153378
5–3
6. Using a confirmed, accurate meter, verify all power to the inverter is de-
energized. A confirmed, accurate meter must be verified on a known voltage
before use. Ensure that all incoming energy sources are de-energized by
checking the following locations at all line-to-line and all line-to-ground
configurations.
•
AC Utility Terminals: [TB1-A, TB1-B, TB1-C, TB1-N, and
TB2(GND BUS)]
See Figure 5-1 on page 5–3 for the location of these terminals.
•
PV Terminals: [TB3, TB4, TB5(PV GND)]
See Figure 5-2 on page 5–4 for the location of these terminals.
CAUTION
Xantrex recommends the installation of PV array disconnect(s) to ensure personal safety
during GT100 maintenance.
WITHOUT PV ARRAY DISCONNECT(S), ONCE THE
DC DISCONNECT SWITCH (S1) IS OPEN,
THERE WILLSTILL BE DC
VOLTAGE on the DC terminals TB3, TB4 AND TB5 (PV GND)
. This voltage may be
as high as the open-circuit voltage of the PV Array and is limited to 600Vdc per NEC 690.
Use extreme care to avoid these terminals if no PV array disconnect is installed.
Figure 5-1
AC Terminal Connections from the Utility
TB1-N terminal
TB1-B Phase terminal
TB1-A Phase terminal
TB1-C Phase terminal
TB2 Ground bar
Summary of Contents for GT100-208
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