5
Chapter 2 Overview
2.1 Inverter for grid-tied PV systems
CPS SCA23/28KTL-DO/US-480 series inverter is suitable for use with
commercial and large scale PV grid-tied systems. The system is generally
made up of PV modules, DC power distribution equipment, PV inverter and AC
power distribution equipment (Figure 2-1). The inverter converts the DC from
PV modules to AC with the same frequency and phase as the AC grid. All or
part of the AC power is supplied to local loads, and the surplus power is
supplied to the electricity grid.
DC power
distribution
equipments
AC Grid
Bidirectional
electric meter
AC power
distribution
equipments
Figure 2-1 Grid-tied PV system
2.2 Product features
High conversion efficiency
：
Advanced 3-level conversion technology;
Max. efficiency: 98.4%
；
CEC efficiency: 98%
Strong grid adaptability:
7 grid standards applicable; Reactive power
adjustable; PF value:±0.8, Remote Curtailment
Flexible communication:
Supports standard modbus communications to
ensure compatibility with 3
rd
party monitoring and control systems
Wide DC input voltage range
：
Operating DC Input Voltage Range:
300-900Vdc; Max DC input voltage: 1000V
Long service life:
Uses thin-film capacitors
to extend inverter’s service life
