Equipments for Photovoltaic System
PV Combiner Box
In photovoltaic system, both the voltage and direct current
deriving from single PV panel is very low. They need to be
combined to a high level before current flowing to inverter.
String Combiner Box is used to consolidate the direct current of every string in PV system right before DC protection
switchboard.
standard combiner box
Low Voltage Products In String Combiner Box
Moulded Case Circuit Breakers——Ex9MD（750/1000V DC，16~250A）
Miniature Circuit Breakers——Ex9BP（250/500/750/1000V DC，32~63A）
Surge Protection Device——Ex9UP（500/1000V DC）
Fuse——Ex9FP（1000 V DC，1~15A）
Disconnector--Ex9IP（1000 V DC，32A，63A）
intelligent combiner box
Diagram
Technical Parameters
Specifications
intelligent combiner box
standard combiner box
Voltage range of PV array(Vdc)
1000
Max.string input in parallel
Ex9F（1000V）
8、12、16、20
Max.current of each fuse input(A)
15
Max.diameter of each input cable(mm)
6.5
Max.diameter of each output cable(mm)
17
Input PV fuse or circuit-breaker
■
Output miniature circuit-breaker
■
PV only surge arrestor
■
Protection level
Array Battery1+
Array Battery1-
-
DC Output-
0~99%
Array Battery20-
-25~+70
Installation temperature(℃)
corrosin of rain,hail and snow
Anti-corrosion
-40℃　ｔｏ　+120℃
Temperature resistance(Box)
Rohs
Posion-free materials
SPD
conform to IEC 60695-2-11,UL subject 94 V-2
Flame retardant
prevent 10% of acid,alkali,gasoline and heavy oil
Chemical resistance
UV resistance
UV resistanve tested for outdoor installation
Degree of resistance to impact
Degree of resistanve to impact IK08(5 Joule)
Communication interface
—
RS485
Current measure of each string
—
■
Voltage measure of system
—
■
Monitoring of circuit-breaker
—
□
Monitoring of SPD
—
□
Temperature measure in the box
—
□
Alarm function
—
□
□ can be selected
— none
DC Output+
Array Battery20+
IP65
Relative humidity
■ standard layout
Ex9BP
+
Ground
Internal Components
Ex9UP SPD
Ex9FP fuse
Grounding terminal
Ex9BP MCB
OUTPUT +
OUTPUT -
PE
INPUT +/-
Product Dimensions ＆　Mounting Size
Product dimensions
Mounting Size
Several standard-size boxes can be easily assembled
together to accommodate more number of strings
based on system specification.
The box needs to be fixed by mounting bracket(Standard Configuration) which can be
installed in three different way according to the different needs,as shown in below
illustration.Thecorresponding mounting size is indicated in the following diagram.
20 Strings for thin films
Mounting size
Note:PVBx has various installations depends on customer requirements,please according to your specific drawings in your installation.