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The company’s confluence box is divided into four categories: anti-reverse intelligent confluence box, anti-reverse non-intelligent convergence box, non-anti-reverse intelligent confluence box without anti-reverse non-intelligent convergence box. According to the number of input channels, it is divided into 6 channels, 8 channels, 10 channels, 12 channels, 14 channels, 16 channels and 18 channels. The anti-reverse intelligent convergence box is mainly composed of DC circuit breakers,It is composed of lightning protection, anti-reverse diode, cable interface, fuse, sampling board, monitoring board and auxiliary power supply board. The function of anti-reverse diode is to prevent the back filling of current between solar panels caused by local shadows or damaged battery panels, so as to avoid damage to other battery panels. The sampling board mainly samples the current of each branch line in the confluence box. PV busbar voltage sampling and monitoring board can monitor the state of lightning arrestors, circuit breakers, etc., communicate with the upper computer, and send the collected data to the upper computer in real time to monitor the current, voltage and various state quantities, etc.The convergence box without anti-reverse function does not have anti-reverse diodes. The non-intelligent convergence box does not have the functions of voltage, current, lightning protection status detection, DC circuit breaker status detection, etc.
Description of the external dimensions of each model’s confluence box
| Type | L | L1 | L2 | W1 | W2 | H | H1 |
| SCR-6/8 | 400 | 433 | 470 | 340 | 400 | 190.70 | 213.70 |
| SCR-6/8M | 430 | 465 | 494 | 440 | 500 | 190 | 213 |
| SDR-6/8 | 420 | 455 | 484 | 410 | 480 | 190.70 | 217.70 |
| SDR-6/8M | 500 | 535 | 567 | 480 | 550 | 190.70 | 225 |
| SCR-10/12 | 500 | 534 | 564 | 340 | 400 | 190 | 214 |
| SCR-10/12M | 480 | 515 | 543 | 440 | 500 | 190.70 | 213.70 |
| SDR-10/12M | 469 | 505 | 536 | 420 | 480 | 190.70 | 223.70 |
| SDR-10/12M | 540 | 570 | 602 | 485 | 550 | 192 | 225 |
| SCR-14/16 | 550 | 589.5 | 620 | 340 | 400 | 190 | 214 |
| SDR-14/16M | 550 | 585 | 615 | 440 | 500 | 190 | 213 |
| SDR-14/16 | 599 | 630 | 662 | 41
5 |
500 | 190 | 213 |
| SDR-14/16M | 620 | 650 | 682 | 465 | 550 | 186 | 225 |
| SCR-18 | 600 | 639 | 670 | 340 | 400 | 190.70 | 213.70 |
| SCR-18M | 620 | 650 | 681 | 440 | 500 | 190.70 | 213.70 |
| SCR-18 | 629 | 660 | 692 | 415 | 500 | 190.70 | 224.70 |
| SCR-18M | 669 | 700 | 732 | 465 | 550 | 190.70 | 229.70 |
| Unit: mm | |||||||
| Part number | Explain : |
| 1 | Pv positive input insurance and fuse box |
| 2 | Pv negative input insurance and fuse box |
| 3 | Sampling board, auxiliary power supply board (non-intelligent without) |
| 4 | Lightning arrest 5 |
| 5 | Short – circuiter |
| 6 | Monitoring board (non-intelligent confluence box is not) 7 |
| 7 | Power grid ground wire terminal block |
| 8 | RS485 communication terminal (non-intelligent junction box is not) |
Table 4-2 Names of each part of the confluence box
Figure 5-2 The distribution map of waterproof terminals of 16 intelligent confluence boxes. 14-way, 16-way and 18-way reference table 5 – choose the appropriate cable. ULZ 000374 Terminal Description
| Terminal Description | Terminal specifications | Widing recommendation |
| DC positive input (PV + IN) | PG7 | 4mm2 |
| DC negative input (PV – IN) | PG7 | 4mm2 |
| DC positive confluence input (PV + ) | PG 21 | 70mm2 |
| DC negative confluence input (PV – ) | PG 21 | 70mm2 |
| Grounding terminal | PG11. | 16mm2 |
| Communication terminal | PG7 | 1.5mm2 Low resistance shielding double Twist Thread |
Table 5-1 SCR-14/16/18M Intelligent Confluence Box Terminal Specification Correspondence Table
For intelligent and non-intelligent junction boxes with 6, 8, 10 and 12 channels, users should choose suitable wiring cables according to Table 5-2.
| Terminal Description | Terminal specifications | Widing recommendation |
| DC positive input (PV+IN) | PG7 | 4mm2 |
| DC negative input (PV-IN) | PG7 | 4mm2 |
| DC positive confluence input (PV+) | PG 21 | 70 mm2 |
| DC negative confluence input (PV – ) | PG 21 | 70 mm2 |
| Grounding terminal | PG11. | 16mm2 |
| Communication terminal | PG7 | 1.5mm2 Low resistance shielding double Twist Thread |
Table 5-2 Corresponding table of 8-way, 10-way, 12-way confluence box terminal specifications
| Project | Number of pages | Display content |
| 6/8 Road
Intelligent convergence with |
1-8 | PV DC input 1-8 channel current value (unit A) |
| 9-16 | Show ” “ | |
| 17 | PV voltage value (unit) | |
| 18 | Temperature in the box (unit℃) (The anti-reverse convergence box defaults to the radiator temperature) | |
| 19 | RS 485 communication address | |
| 20 | Type of confluence box machine | |
| Project | Number of pages | Display content |
| Route 10
Intelligent convergence with |
1 – 10 | PV DC input 1~10 channel current value (unit A) |
| 11-16 | Show” “ | |
| 17 | PV voltage value (unit V) | |
| 18 | Temperature in the box (unit “C”) (the default of the anti-reverse confluence box is the radiator temperature) | |
| 19 | RS485 communication address | |
| 20 | Confluence box machine type display | |
| Project | Number of pages | Display content |
| Route 12
Intelligent confluence box |
1-12 | PV DC input 1-8 channel current value (unit A) |
| 13 – 16 | Show “–“ | |
| 17 | PV voltage value (unit) | |
| 18 | Temperature in the box (unit “C”) (the default of the anti-reverse confluence box is the radiator temperature) | |
| 19 | RS 485 communication address | |
| 20 | Type of confluence box machine | |
| Project | Number of pages | Display content |
| Route 14/16
Intelligent confluence box |
1-16 | PV DC input 1~16 channel current value (unit A) |
| 17 | PV voltage value (unit) | |
| 18 | Temperature in the box (unit °C) (the default temperature of the anti-reverse convergence box is the radiator temperature) | |
| 19 | RS485 communication address | |
| 20 | Type of confluence box machine | |
| Project | Number of pages | Display content |
| Route 18
Intelligent confluence box |
1 – 19 | PV DC input 1~18 channel current value (unit A) |
| 19 | PV voltage value (unit) | |
| 20 | Temperature in the box (unit “C”) (the default of the anti-reverse confluence box is the radiator temperature) | |
| 21 | RS485 communication address | |
| 22 | Type of confluence box machine |
Table 5-4 Corresponding table between pages and display content
The machine types corresponding to different dialing methods are shown in the following table. ULZ 000618 Machine type
| Type | Dial code switch 1 | Dial code switch Two | Dial code switch Three |
| 6/8 Road | 1 | 0 | 0 |
| Route 10 | 0 | 1 | 0 |
| Route 12 | 1 | 1 | 0 |
| Route 14/16 | 0 | 0 | 0 |
| Route 18 | 1 | 0 | 1 |
| Parameter
Type |
SCRSDR-6M | SCRSDR-8 M | SCRSDR-10M | SCRSDR-12M | SCRSDR-14M | SCRSDR-16M | SCRSDR-18M |
| The maximum current input for each channel | 9.6A | 9.6A | 9.6A | 9.6A | 9.6A | 9.6A | 9.6A |
| Communication method | RS 485 | RS 485 | RS 485 | RS 485 | RS 485 | RS 485 | RS 485 |
| PV input maximum voltage | 1000V | 1000V | 1000V | 1000V | 1000V | 1000V | 1000V |
| The maximum number of connectible components | 6 | 8 | 10 | 12 | 14 | 16 | 18 |
| Waterproof level | IP65 | IP65 | IP65 | IP65 | IP65 | IP65 | IP65 |
| Ambient temperature | -25°C-55°C | ||||||
| Environmental humidity | 0~99% | ||||||
| DC total output circuit breaker | Have | ||||||
| Special lightning protection module for photovoltaics Have | Have | ||||||
| Photovoltaic array current monitoring | Have | ||||||
| Lightning arrator failure monitoring | Have | ||||||
| Short-circuit failure monitoring | Have | ||||||
| Communication interface | RS 485 | ||||||
Table 8-1 Intelligent Convergence Box Parameter Table
| Parameter
Type |
SCRSDR-6M | SCRSDR-8 M | SCRSDR-10M | SCRSDR-12M | SCRSDR-14M | SCRSDR-16M | SCRSDR-18M |
| The maximum current input for each channel | 9.6A | 9.6A | 9.6A | 9.6A | 9.6A | 9.6A | 9.6A |
| Communication method | RS 485 | RS 485 | RS 485 | RS 485 | RS 485 | RS 485 | RS 485 |
| PV input maximum voltage | 1000V | 1000V | 1000V | 1000V | 1000V | 1000V | 1000V |
| The maximum number of connectible components | 6 | 8 | 10 | 12 | 14 | 16 | 18 |
| Waterproof level | IP65 | IP65 | IP65 | IP65 | IP65 | IP65 | IP65 |
| Ambient temperature | -25°C-55°C | ||||||
| Environmental humidity | 0~99% | ||||||
| DC total output circuit breaker | Not have | ||||||
| Special lightning protection module for photovoltaics | Not have | ||||||
| Photovoltaic array current monitoring | Not have | ||||||
| Lightning arrator failure monitoring | Not have | ||||||
| Short-circuit failure monitoring | Not have | ||||||
| Communication interface | Not have | ||||||
Table 8-2 Non-intelligent convergence box parameter table
(1) Product modification or design change or accessory replacement has not been passed Dada Electric The permission of. ULZ 000856 Modify, change or try to repair, the serial number is erased or is not stamped by East German electrical technicians.
(2) Modification, alteration or attempted repair, serial number rubbed or without the seal of CDADA electrical technician Wrong installation and debugging.
(3) Non-compliance with appropriate safety regulations (CQC standards, etc.).
(4) The product has been improperly stored and damaged when stored by the end user.
(5) Damaged in transportation, scratching the paint surface during transportation and handling. When there is sufficient evidence when unloading, it should be declared to the insurance company as soon as possible.
(6) Failure to comply with the user manual, installation guidelines and maintenance procedures
(7) Incorrect use or improper operation
(8) Inadequate ventilation equipment.
(9) The related product repair procedure does not follow or implement an acceptable standard.
(10) Irresistible (such as lightning, over pressure, storm, fire).
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