Filter
Top Products
Safety
153553 ix
This guide for use by qualified personnel only
4. Open, lockout, and tag the DC Disconnect Switch (S1) on the right door
of the Inverter enclosure. See GT100 or GT250 Grid Tie Inverter manual
for the location of the DC Disconnect Switch.
5. 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 GT100 or GT250 Grid Tie Inverter manual for the location of
these terminals.
• PV Terminals: [TB3, TB4, and TB5 (PV GND)]
See GT100 or GT250 Grid Tie Inverter manual for the location of
these terminals.
CAUTION
Once the DC Disconnect Switch is open, there will be DC voltage on the PV
Array side of the switch where TB3, TB4, and TB5(PV GND) are located. This
voltage may be as high as the Open-Circuit Voltage of the PV Array and is
limited to 600VDC per NEC 690.
Ethernet.book Page ix Thursday, May 29, 2008 4:20 PM