Specifications

Wiring - Specific
975-0581-01-01 3–9
This manual is for use by qualified personnel only
The auxiliary supply transformer (-T6) has several primary taps. The tap must be
selected to match the auxiliary control voltage supplied to the unit, 230, 315, 375
or 400 V depending on model and system details. The control voltage
transformer comes pre-wired based on the output voltage. If you want to supply
the auxiliary supply voltage from an external supply (for example, housekeeping
power for a whole PV station/box) then the existing connection at the primary
must be removed and the external supply should be connected accordingly. In
most cases an external supply is 230 Vac/50 Hz therefore it should be connected
to 230 primary tap. The transformer is located in the AC interface enclosure. See
Figure 3-8 on page 3–10 for the location of -T6.
To connect the auxiliary supply voltage to AC interface enclosure:
1. Follow the lock-out and tag-out procedures on page viii.
2. Open the door of the AC interface enclosure.
3. Route the auxiliary supply voltage conductors –X2:L1 and -X2:L2 through the
conduit from the source to the AC interface enclosure.
4. Connect the auxiliary supply voltage conductors to the appropriate terminals
of the –X2 terminal block. These conductors must use crimp-on type Ferrules
as specified in Table A-5. See Figure 3-7 for the location of these terminals.
5. If the unit system is provided with a remote emergency stop (E-STOP) switch,
route the conductors from the switch to the AC interface enclosure. These
conductors terminate on -X2:6 and -X2:7 and on -X2:8 and -X2:9. Both sets
of terminals need to be switched by the remote emergency stop switch. If the
system does not have a remote E-STOP switch, a jumper must be installed
between -X2:6 and -X2:7 and between -X2:8 and -X2:9. For torque
specifications for this terminal block see Table A-6 on page A–5.
To select the correct voltage tap for the control voltage transformer (-T6):
1. Follow the lock-out and tag-out procedures on page viii.
2. Open the door of the AC interface enclosure
3. Remove any existing connections at the primary side of -T6 and replace as
follows:
a) Xantrex GT500 E: The Xantrex GT500 E is designed to operate at the
nominal voltage of 315 Vac +/-10%, therefore the control voltage should
be supplied from 330 and -15% taps primary. See Figure 3-8 for the
location of the terminal block of (-T6). Make sure wiring is correct. For
torque specifications for this terminal block see Table A-6 on page A–5.
b) Xantrex GT630 E: The Xantrex GT630 E is designed to operate at the
nominal voltage of 375 Vac +/-10%, therefore the control voltage should
be supplied from 375 and 0 taps primary, and secondary to 230 V tap.
See Figure 3-8 for the location of the terminal block of (-T6). Make sure
wiring is correct. For torque specifications for this terminal block see
Table A-6 on page A–5.
4. Close the door of the AC interface enclosure.