Schematic Diagram And Circuit Design; Labels - YASKAWA Solectria PVI 25TL-480-R Installation And Operation Manual

Installation and Operation Guide SOLECTRIA PVI 25TL-480-R
① DC Input fuse holder/terminal (positive)
② DC Input terminal (negative)
③ Communication board
④ Internal ground terminal
⑤ RSD transmitter
⑥ AC output terminal block

Schematic Diagram and Circuit Design

2.6
The basic electrical schematic diagram of SOLECTRIA PVI 25TL-480-R inverters is shown in Figure 2-4. The input from PV
source circuits passes through surge protection circuitry, DC EMI wave filters, and independent DC-DC boost circuitry to
achieve maximum-power-point tracking and boost the voltages to a common DC bus. The inverter uses line voltage and
frequency measurements to synchronize to the grid and converts the available PV power to AC power by injecting
balanced 3-phase AC current into the electric utility grid. Any high frequency AC component is removed by passing
through a two-stage relay and EMI wave filter to produce high quality AC power.
Fuses
PV1+
PV1+
PV1+
PV1-
PV1-
PV1-
PV2+
PV2+
PV2+
PV2-
PV2-
PV2-
PV Input
RSD
WIRE BOX

Labels

2.7
The SOLECTRIA PVI 25TL-480-R has labels on the Power Head. Do not deface these labels as they contain important
information required for warranty service. The labels on the Power Head show the inverter specifications and FCC
compliance. See Figure 2-5.
DOCR-071030-A (11/17/2020)
DC Switch
DC MOV
PV1+
PV2+
PE
Figure 2-4 Basic electrical schematic diagram
INVERTER POWER HEAD
MPPT1
MPPT2
PV-
AFD
Type Ⅲ MOV
Three
level
inverter
AC AC
Switch Output
L1
L2
L3
N
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