Interconnection Wiring - Xantrex PV-100208 Operation And Maintenance Manual

SECTION 3
INSTALLATION AND INITIAL TURN-ON
Ground Fault Detection
The PV-100208 is equipped with a ground fault detection
circuit and current transducer. This circuit is active when the
PV array is grounded as described in the previous section. In
the event of a greater than 10 amp ground fault, the PV-
100208 will execute an orderly shutdown and annunciates a
ground fault at the operator interface. The PV-100208 will
remain faulted until the ground fault is remedied and cleared
at the operator interface (see section 5, Troubleshooting).
CAUTION
The input and output circuits are isolated from the
enclosure and that system grounding, if required by
sections 690-41 and 690-42 of the National Electric
Code, ANSI/NFPA 70, is the responsibility of the in-
staller.

INTERCONNECTION WIRING

To reduce the risk of fire, connect only to a circuit provided with 450 amperes
maximum branch circuit overcurrent protection in accordance with the National
Electrical Code, ANSI/NFPA 70.
The following wires for connecting the PV-100208 to external devices are not provided by Xantrex
Technology: (See installation diagram on pages 3-5.)
• Connect 3-Phase 208 VAC inverter output (AC Disconnect switch) to terminals of the 208 VAC
inverter side of isolation transformer. If the inverter side of the isolation transformer is con-
figured WYE, the neutral must be left floating. If the inverter side neutral is tied to ground,
the inverter will not function properly. Also, insure that the neutral is not bonded to the
isolation transformer frame. Be sure to maintain proper phasing as shown in the system sche-
matic found in Section 7.
• Connect Isolation transformer grid side terminals 1, 2, and 3 to line circuit breaker. Be sure to
maintain proper phasing as shown in the system schematic found in Section 7.
• PV frame ground to ground terminal block (TB3).
• Connect PV+, PV-, and PV Safety ground to the DC interface enclosure's designated termina-
tions. See Section 7 for further detail .
When connecting external AC wires to the PV-100208, positive phasing sequence
must be maintained throughout the installation process. Refer to the System
Schematic in Section 7 of this manual for proper phasing convention.
Install all wires listed above. Refer to the Appendix in Section 7 for layout of the AC and DC inter-
face enclosures. Refer to the system schematic in Section 7 for more detailed terminal locations.
DOCUMENT: 151700
CAUTION
CAUTION
PV-100208 Photovoltaic Inverter
Operation and Maintenance Manual
Copyright 2003, Xantrex Technology Inc.
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