Specifications
Visual Inspection of Mechanical Connections
975-0581-01-01 4–3
This manual is for use by qualified personnel only
Inspect the following items prior to completion of the installation:
1. Visually inspect all the mechanical connections. This would include both
electrical conduit fittings, as well as enclosure anchoring and seismic
bracing if required.
2. Visually inspect the electrical connections and verify proper tightness of all
terminations.
3. Visually inspect the utility transformer connections. The inverter-side
windings of the transformer can be Wye or Delta. Do not connect any point of
the inverter-side winding to ground.
4. Perform corrective actions if required.
Visual Inspection of Mechanical Connections
To perform a visual inspection of the Xantrex inverter’s mechanical
connections:
Visual Inspection of Electrical Connections
To perform a visual inspection of the Xantrex inverter’s electrical connections:
1. Ensure any required seismic bracing and all anchor bolts are properly
tightened and in place.
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2. Unlatch and open the doors of the inverter enclosure, the AC and DC
interface enclosures and visually inspect for damage and loose wires.
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3. Verify all conduit fittings are properly tightened.
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1. Ensure that all circuits are locked-out and tagged-out by following the
procedures on page viii.
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2. Ensure all conductors and wiring connections interfacing with the
Xantrex inverter are tightened to the correct torque value.
For specific torque values, see Table A-5 and Table A-6 on page A–5.
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3. Verify the AC power conductors terminated at L1, L2, L3 within the AC
interface enclosure are terminated correctly and sequenced L1-L2-L3.
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4. Verify the AC control power conductors terminated at -X2:L1 and
-X2:L2 and the remote E-STOP switch or jumper terminated at -X2:6
and -X2:7 as well as -X2:8 and -X2:9 within the AC interface enclosure
are terminated correctly and tightened to the correct torque value. For
specific torque values, see Table A-5 on page A–5.
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5. Verify that the proper tap is selected on auxiliary supply transformer
-T6, as described on page 3–9.
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6. Verify DC power conductors terminated at PV+ and PV- within the DC
interface enclosure are terminated correctly and properly polarized.
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