LX-AC Photovoltaic AC Combiner Box_Hefei Huangma Electric Co., Ltd

LX-AC Photovoltaic AC Combiner Box

Short Description:
■ Product OverviewThe LX-AC Photovoltaic AC Combiner Box is a crucial component in photovoltaic string power generation systems,serving as the important connection between string inverters and AC distribution cabinets or step-up transformers. The input of this combiner box uses circuit breakers, whi …

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■ Product Overview

The LX-AC Photovoltaic AC Combiner Box is a crucial component in photovoltaic string power generation systems,serving as the important connection between string inverters and AC distribution cabinets or step-up transformers. The input of this combiner box uses circuit breakers, while the output uses circuit breakers or load disconnect switches. After the busbar combines the current, it adopts secondary lightning protection. The system's rated voltage is up to AC690V. Its protection level is equivalent to IP65 for string inverters, meeting the requirements for outdoor installation and providing waterproof, dustproof, UV-resistant, and salt-fog corrosion-resistant features. This product significantly simplifies the wiring between string inverters and AC distribution cabinets or step-up transformers. The internal structure of this product is simple and clear, with neat and reasonable wiring layout. It features high reliability and simple maintenance. The outdoor wall-mounted installation can adapt to various harsh environments. In addition to standard materials and dimensions, it can be customized according to user requirements.

■ Electrical Technical Parameters

Product Model	LX-AC4	LX-AC6	LX-AC8
Number of Input Circuits	1~4	5~6	7~8
Maximum Input Voltage
AC690
Input Current per Circuit
0~100A
Maximum Output Current	250A	400A	630A
Rated Operating Voltage Un
480VAC
Voltage Protection Level Up
≤ 3.2kV
Nominal Current Carrying Capacity (8/20us)
20kA (Optional according to customer requirements)
Maximum Current Carrying Capacity (8/20us)
40kA (Optional according to customer requirements)
Response Time
<25ms
Temperature & Humidity
Operating Temp: -40~+85°C, Humidity 95%, No condensation, Non-corrosive gas location
Altitude
≤ 4000m
Enclosure Material
Hot-dip galvanized steel plate / Stainless steel / Cold-rolled steel plate / Engineering plastic
Enclosure Protection Rating
IP65
Cable Joint Protection Rating
IP66
Volume (W x H x D)	800mmx600mmx200mm	800mmx800mmx200mm	800mmx1000mmx200mm

■ Functional Features

The protection level of the AC combiner box reaches IP65, meeting the requirements for wall-mounted sealed cabinets for outdoor installation.
Meets the requirements for connecting multiple string inverters simultaneously. Each input circuit uses a thermal-magnetic circuit breaker for protection, with a rated voltage up to AC690V.
Uses dedicated high-voltage surge arresters to meet overvoltage and lightning protection requirements between three phases, with operating voltage reaching above AC480V.
All busbars inside the enclosure use plated or purified busbar connections to reduce busbar internal resistance and connection resistance.
Output uses circuit breakers, load disconnect switches, or fuse outputs.

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