Solar DC Combiner Box
Introduction:
Solar String Combiner Box is required in large-scale solar systems or solar pump systems, it is installed between the PV array and solar inverter with the following main function:
- Minimize the cable length.
- Increase reliability and stability by providing protection against lightning strokes and short circuits.
- Simplify maintenance by reducing connection lines between the PV array and solar inverter kit.
The VKCB lightning protection combiner box combines the DC input and sink of 2，3, 4, 5, 6, 8, 10, 12, 14, 16, 18, 20, 24, 30,36, 48 PV modules to 1 output, each channel is equipped with a fuse, and the output is equipped with a lightning arrester and a circuit breaker
The input wiring of the DC power distribution cabinet and the inverter is greatly simplified. Provide lightning protection, short circuit protection and grounding protection.
The combiner box is divided into two types, intelligent and non-intelligent. The intelligent lightning protection combiner box is equipped with a sink monitoring unit. It can monitor the current input from each photovoltaic cell string, the summed output voltage, the temperature inside the box, the status of the lightning arrester, and the status of the circuit breaker.
Design and configuration are strictly accordances with the requirements of “Technical Specification for Photovoltaic Confluence Equipment” CGC/GF 037:2014. Provide users with security, concise, beautiful, and suitable photovoltaic system products. The product is wall-mounted and can be adapted to a variety of harsh environments. In addition to the relevant core components. Others can be customized according to user requirements.
Use special photovoltaic DC surge protector.
Use special photovoltaic DC circuit breaker, rated voltage can reach DC 1500V
IP 65 protection. Waterproof, dust and UV protection
Applicable to wide area. Strict high and low-temperature testing
Easy installation. Simple system wiring, easy to wire
Box is metal material, like cold-rolled steel
DC Solar Combiner Box Model Series: VKCB |
|
| Electrical parameters | |
| System max DC voltage | 1500V |
| Max input current per channel | 15A |
| Max input numbers of input channels | 1~48 channels |
| Number of inverter MPPT | N |
| Max output switching current | 800A |
| Number of output channels | 1 |
| Lightning protection | |
| Test category | II grade protection |
| Nomimal discharge current | 20KA |
| Max discharge current | 40KA |
| Voltage protection level | 3.8KV |
| Max continuous operating voltage | 1500V |
| numbers of poles | 2002/3/4 |
| Structure charactoristic | Plug-push module |
| System | |
| Protection grade | IP 65 |
| Output switch | DC isolatation switch (optional)/ DC circuit breaker (standard) |
| SMC4 waterproof connector | Standard |
| PV DC fuse | Standard |
| Monitoring module | Optional |
| Preventing diode | Optional |
| Box material | Metal |
| Installation method | Wall-mounted |
| Operating temperature | -25℃ ~ +55℃ |
| Altitude | 2000m |
| Allow relative humidity | 0 – 95%, nocondensation |