Table of Contents
Advertisement
Installation and Operation Guide SOLECTRIA® PVI 25TL-208, PVI 36TL-480-V2, PVI 50TL-480 and PVI 60TL-480
⑥ DC SPD (Surge Protective Device)
⑦ Internal ground terminal
⑧ AC output terminal block
⑨ Negative DC input busbar
⑩ Rapid Shutdown transmitter
Schematic Diagram and Circuit Design
The basic electrical schematic diagram of the PVI-36TL-480-V2, PVI 50TL-480 and PVI 60TL-480 inverters with a
standard wire box is shown in Figure 3-3; the schematic diagram of the same inverters with the MLPE (rapid
shutdown transmitter integrated) wire box is show in Figure 3-4. The diagram for the PVI 25TL-208 is shown in
Figure 3-5.
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
WIRE BOX
PV1+
PV1+
PV1+
PV1+
PV1+
PV1-
PV1-
PV1-
PV1-
PV1-
PV2+
PV2+
PV2+
PV2+
PV2+
PV2-
PV2-
PV2+
PV2-
PV2-
PV2-
PV3+
PV3+
PV3+
PV3+
PV3+
PV3+
PV3-
PV3-
PV3-
PV3-
PV3-
PV Input
Figure 3-3 PVI-36TL-480-V2 & PVI 50/60TL-480 Inverter Schematic, Standard Wire Box
The Rapid Shutdown wire box has been designed specifically for NEC 2017+ Rapid Shutdown applications. This
wire box includes a powerline communications transmitter, powered by AC at the inverter output. This
transmitter sends a "stay alive" signal to AP Smart receivers at the array. When the inverter senses the loss of AC
DOCR-071086-C (04/12/2024)
DC Switch
DC SPD
PV1+
PV-
PE
AFD
INVERTER POWER HEAD
MPPT1
MPPT2
Three
level
MPPT3
inverter
AC
AC
Switch
Output
Type Ⅲ MOV
L1
L2
L3
N
Page 15 of 136
Advertisement
Table of Contents
Troubleshooting
