Solar String Combiner Boxes



We are instrumental in offering our clients highly functional Solar String Combiner Boxes. This Solar String Combiner Boxes, which we offer, are fabricated with the use of latest technology and are suitable for different Solar Power applications. Our Combiner Boxes is properly tested by the experts under strict industry norms to guarantee flawless functioning and durability. Also known as Array Junction Boxes (AJB), these Solar String Combiner Boxes have PV combiner boxes, basically collect DC power from PV strings with blocking diodes on each string for protecting panels from reverse current flow. The collected power is then transferred to power inverter.

Also known as Array Junction Boxes (AJB), these Solar String Combiner Boxes have PV combiner boxes, basically collect DC power from PV strings with blocking diodes on each string for protecting panels from reverse current flow. The collected power is then transferred to power inverter.

GEESYS Solar Junction Boxes

  • Array/String Junction Boxes (AJB)
  • Main Junction/Pre-Combiner Boxes (MJB)
  • Combiner Boxes
  • DC Distribution Boxes (DCDB)
  • AC Distribution Boxes


Introduction

  • Array Junction Box (AJB) : Array Junction Box is meant for combining all the incoming lines from the solar panel strings/arrays and deriving one common array output for the multiple array inputs.
  • Main Junction Box (MJB) : A Main Junction Box (MJB) is used to combine the multiple outputs from multiple numbers of Array Junction Boxes in the Power Plant and form a single output that can be connected directly to the DC Distribution Board (DCDB) or Power Conditioning Unit (Solar Inverter).


Features

  • To Block the reverse flow of current from the battery to solar panels during nights or low radiation levels.
  • To obstruct the sudden surges due to lightening strokes during cloudy and rainy conditions and ground the surges immediately.
  • Efficient String Monitoring - Optional
  • Disconnect DC at the sources
  • Fuses for overload protection on each string
  • Blocking Diodes for reverse current flow protection
  • Easy DC-termination
  • Easy and decent Cable management
  • Time effective as well as money effective for cabling
  • Step by step trouble shooting methodology
  • Contemporary DC combining and disconnecting
  • Space saving and orientation flexibility
  • Load-break rated disconnecting
  • Increased granularity
  • Traditional DC combining
  • Reliable electric safety to avoid hazard
  • Online Monitoring* (Optional for DCDB/ACDB)

 

Main Functional Features of The Main Junction Box

  • The main important features of the Main Junction Box are to provide a single output.
  • The MJB consists of two bus bars. One is used to combine all the positive terminals and the other is used to combine the negative terminals.
  • Efficient String Monitoring Optional

 

Features :

  • Touch safe
  • Surge protection via Type-2 devise for 1000V
  • DC isolation switch rated for 1000V/ 250A
  • HRC Fuse protection on both ve and -ve solar strings with 1000V/10-20A Fuses
  • Monitoring of strings & RS485 MODBUS communication
  • IP66 polyester enclosure to withstand harsh environmental exposure
  • IP65 incoming MC4 connector rated for 1100V DC pass
  • All ve and -ve cables rated for IP65 cable Gland M12
  • IP65 cable gland for 2oC
  • 70 sq.mm. outgoing DC feeder line
  • 6 Sq.mm. terminals for incoming solar strings
  • Designed to meet high voltage and other fault current levels of solar systems
  • Ideal for use in land based PV systems
  • Tested to extreme ambient conditions


Specification

Array Junction Box (AJB)

  • Terminal Block/Bus Bar
  • Disconnect Fuse
  • Diode
  • MOV-48/96V
  • SPD 600/1000V
  • Isolator/MCB/MCCB-Optional
  • String Monitoring Facility-Optional

 

Parameters Array configuration String configuration
Model GETCETINV GETSTRINV
Maximum DC Input Range 1000V 1000V
No of DC Inputs 2 - 16 2 - 24
No of DC Outputs 1 1 - 8
Number of Terminal Blocks 4 - 34 4 - 48
Reverse Blocking Diode, No's 2 - 12 2 - 24
Maximum Input Fuse* Rating, A 3/5/10/12/15/20/30 12/16/32/40/63
Maximum string current per fuse holder with all string fuse** Reduction factor 0.55 Reduction factor 0.55
Maximum DC Current, A 100 192
Maximum Continuous Current, A 160 240
Isolator/MCB*, A 16/32/40/63 16/32/40/63
Maximum Voltage, VDC 600/1000 600/1000
+Ve Input Wire Size,1C x sqmm 2.5 - 10 4 - 25
-Ve Input Wire Size, 1C x sqmm 2.5 - 10 4 - 25
MOV 110/680V 110/680V
Surge Protection Device (SPD)* 600/1000V, Class II 600/1000V, Class II
Operating Temperature -25 to 55 -25 to 55
Enclosure Type PS/PC* PS/PC*
Protection Type/Protection Class IP65 IP65
Connectors* @ Output MC4/MC3 MC4/MC3
Cable gland clamping range, mm 12 - 32 12 - 32
Wall mounting Yes Yes
Bus Bar* Yes Yes
Operating conditions Temp : -20 to +55 Deg. C ; RH :95% non cond
Type of Protections(As per Clients requirement) Short-Circuit, Surge Short-Circuit, Surge
International standards followed IEC 60364 IEC 60364
Disconnection switch Optional Optional
Design Life 25 years +

Technical Details

Main Junction Box (MJB)

  • Terminal Block/Bus Bar
  • Disconnect Fuse
  • SPD 600/1000V
  • Isolator/MCB/MCCB-Optional
  • String Monitoring Facility-Optional
  • Other Accessories
  • Parameters Array configuration

 

 

Parameters Array configuration String configuration
Model GETCETINV GETSTRINV
Maximum DC Input Range 1000V 1000V
No of DC Inputs 2 - 16 2 - 24
No of DC Outputs 1 1 - 8
Number of Terminal Blocks 4 - 34 4 - 48
Reverse Blocking Diode, No 2 - 12 2 - 24
Maximum Input Fuse* Rating, A 3/5/10/12/15/20/30 12/16/32/40/63
Maximum string current per fuse holder with all string fuse Reduction factor 0.55 Reduction factor 0.55
Maximum DC Current, A 100 192
Maximum Continuous Current, A 160 240
Isolator/MCB*, A 16/32/40/63 16/32/40/63
Maximum Voltage, VDC 600/1000 600/1000
+Ve Input Wire Size,1C x sqmm 2.5 - 10 4 - 25
-Ve Input Wire Size, 1C x sqmm 2.5 - 10 4 - 25
MOV 110/680V 110/680V
Surge Protection Device (SPD) 600/1000V, Class II 600/1000V, Class II
Operating Temperature -25 to 55 -25 to 55
Enclosure Type PS/PC* PS/PC*
Protection Type/Protection Class IP65 IP65
Connectors* @ Output MC4/MC3 MC4/MC3
Cable gland clamping range, mm 12 - 32 12 - 32
Wall mounting Yes Yes
Bus Bar* Yes Yes
Operating conditions Temp : -20 to +55 Deg. C ; RH : 0 95% non cond
Type of Protections(As per Clients requirement) Short-Circuit, Surge Short-Circuit, Surge
International standards followed IEC 60364 IEC 60364
Disconnection switch Optional Optional
Design Life 25 years +