Overview
The LHLX photovoltaic grid-connected box is an important power protection part that connects the string inverter and the power grid system in the photovoltaic string power generation system. The circuit protection part adopts photovoltaic grid-connected circuit breakers and pull ring disconnectors, and uses secondary lightning protection. The protection level is 65, the same as that of the string inverter, meeting the requirements for outdoor installation and providing protection against ultraviolet rays. Prevent salt spray corrosion, etc. The internal structure of this product is simple and clear, and the wiring is neat and reasonable. High reliability and simple maintenance. Outdoor wall-mounted installation, capable of adapting to various harsh environments. In addition to standard materials and sizes, customization can be made according to the user’s requirements. The LHLX-AC photovoltaic combiner box is an important component applicable to the photovoltaic string power generation system, connecting the string inverter with the AC distribution cabinet or the step-up transformer. The incoming line of this combiner box adopts circuit breaker input, and the output adopts circuit breaker or load disconnector. After the busbar is combined, secondary lightning protection is adopted. The maximum rated voltage of the system is AC690V. The protection level is 65, the same as that of string inverters, meeting the requirements for outdoor installation and providing protection against ultraviolet rays, salt spray corrosion, etc.
This product greatly simplifies the wiring between string inverters and AC distribution cabinets or step-up transformers. The internal structure of this product is simple and clear, and the wiring is neat and reasonable. High reliability and simple maintenance. Outdoor wall-mounted installation, capable of adapting to various harsh environments. In addition to the standard materials and sizes, customization is available as per the user’s requirements.
Technical parameter
| Product model | LHLX-AC4 | LHLX-AC6 | LHLX-AC8 |
| Input path number | 1~4 | 5~6 | 7~8 630A |
| Maximum input voltage | AC690 | ||
| Each input current | 0~100A | ||
| Maximum output current | 250A 400A | ||
| Rated operating voltage (Un) | 480VAC | ||
| Voltage protection level (Up) | ≤3.2kV | ||
| Nominal through-flow capacity In (8/20us) | 20kA (Optional according to customer requirements) | ||
| Maximum flow capacity Imax (8/20us) | 40kA (Optional according to customer requirements) | ||
| Response time | <25ns | ||
| Temperature and humidity | Operating temperature: -40~+85℃, humidity 95%, no condensation, no corrosive gas place | ||
| Altitude | ≤4000m | ||
| Box material | Hot-dip galvanized steel/stainless steel/cold-rolled steel/engineering plastics | ||
| Case protection class | 65 | ||
| Protection class of cable joint | 66 | ||
| Volume (width×height×depth) | 800mm×600mm×200mm | 800mm×800mm×200mm | 800mm×1000mm×200mm |
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