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.