Connection Overview; System Connection; Pv Connection - Lux Power Technology LXP8K SPEC User Manual

3.3

Connection Overview

3.3.1

System Connection

The system connection diagram is as below( for US version):
L
PV Breakers
Battery Breaker
Please prepare the breakers before connetion, breakers selection recommendation for both DC and AC
Inverter model
MPPT1 string 1 : 600V/20A
MPPT1 string 2 : 600V/20A
PV Breakers(2Px4)
MPPT2 string 1: 600V/20A
MPPT2 string 2: 600V/20A
Battery Breaker(2P) 100V/300A
Main Breaker(2P) 100A/230Vac
Load Breaker(2P)
63A/230Vac
Geneartor breaker 63A/230V
Overview of Connection Ports
WIFI
PV INPUT
COM
DC Switch
95 mm(3.74in)
07
N
L
Geneartor breaker
N L N L N
Load Breaker
UPS Load
8K 10K
MPPT1 string 1 : 600V/20A
MPPT1 string 2 : 600V/20A
MPPT2 string 1: 600V/20A
MPPT2 string 2: 600V/20A
100V/300A
100A/230Vac
63A/230Vac
63A/230V
4-51mm(2 in)
35.5mm(1.4 in)
BAT INPUT LOAD GRID
72 mm(2.83in)
87 mm(3.43in)
101 mm(3.98in)
Overview of the cable box
FAN1 a. DRM Interface
f. FAN2
b. Battery Communication Interface
FAN3
c. CT Interface
g. TEMP
d. INV485
h. Meter 485B
485A
GND
RSD
+VIN
i.
+12V
j. CAN Matching resistance
NO
k.
GEN
e. Parallel cable
NC
NO
l.
communication Interface
DRY
NC
3.4

PV Connection

PV connection of this hybrid inverter is same as traditional on-grid solar inverter (string inverter).
* Please check the lowest ambient temperature of the location of the installation. The rated
Voc on solar panel nameplate is obtained at 25℃ temperature. Solar panel Voc will increase
with the decreasing of ambient temperature. Please ensure the Max.solar string voltage
corrected at the lowest temperature not exceed the inverter max input voltage 550V for safe.
Cable Requirement:
Cable Size
2
10-8 AWG(5-8 mm )
a). DRM port(Applied only in AU)
b). Battery communication port(CAN&RS485)
please check Chapter 3.5.2 for Pin definition
c). CT Interface: please check Chapter 3.6.4 for CT connection
d). INV 485: Debugging port
e). Parallel communication port
please check Chapter 3.9 for Parallel connection
f). FAN1/2/3
g). TEMP: Connection for temperature sensor of lead-acid battery
h). Meter 485B&485A: For Meter communication
i). VIN/+12V: Connect a outside emergency switch on these 2 terminals
j). CAN Matching resistance: Set DIP switch when use inverters in parallel
k). GEN(NO, NC): Connection for generator auto-start function
l). DRY(NO,NC): reserved
M i n i m u m V o l t a g e
600V
08