Dc Connections - YASKAWA SOLECTRIA XGI 1500 Series Installation And Operation Manual

Installation and Operation Guide SOLECTRIA XGI 1500 (Rev A, April 2019)
3.8

DC Connections

The PV source circuits must be combined external to the inverter using equipment such as the XGI Remote
Combiner box or the XGI Attachable Combiner box.
3.8.1
General DC Connection Information
The SOLECTRIA XGI 1500 is a single DC input into one MPPT zone.
Perform the calculations based on the total inverter nameplate AC power rating. With a maximum DC/AC ratio
of 1.5 at STC conditions (Equation 3.1), a user can connect up to 188 kWp (for XGI 1500-125/125 or XGI
1500-125/150), 225 kWp (for XGI 1500-150/166), or 250 kWp (for XGI 1500-166/166). See Table 3-5 DC Input
Specifications. Note for any application that may experience higher than 1000 W per m2 on a regular basis, a
lower DC/AC ratio is recommended. Also, the sum of the Isc rating of all PV source circuits multiplied by 1.25
must be less than 320 A (Equation 3.2).
DC/AC Ratio and Isc Requirements
Both the DC/AC ratio and Isc limit requirements must be met.
Failure to stay within these limits may result in damage NOT covered under
3.8.2
DC Input Specifications
Max Operating DC
power
Max DC rated power
allowed
Absolute Max open
circuit Voltage
Operating voltage
Max power input
voltage range (MPPT)
Maximum operating
input current
Maximum PV Current
(Isc x 1.25)
Maximum Allowed DC
to AC Ratio
Risk of Electric Shock or Fire
Use only with PV modules, DC conductors, switches, fuses, and fuse holders with a
maximum system voltage rating of 1500 VDC or higher.
∑ ��
Table 3-5 DC Input Specifications
XGI 1500-125/125 XGI 1500-125/150
127 kW
188 kW
148.3 A
≤ 1.5 at STC
∗ 1.25 ≤ 320A
XGI 1500-150/166
127 kW
188 kW
1500 VDC
860 - 1450 VDC
860 - 1250 VDC
148.3A
320 A
1.5
warranty.
XGI 1500-166/166
152 kW 169 kW
225 kW 250 kW
178.0A 197.7 A
(3.1)
(3.2)
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