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8 PV strings each box supports, be parallel running to support larger syste
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Fonrich IP technology to self-adapt with different invertors
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Remote monitoring with Modbus RS485
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Arc fault detecting of each PV string
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The protection arc sensitivity is adjustable
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UL 1699B 2018 conformity
Arc Fault Protection Box
AFS8B Arc Fault Protection Box is a solar AFCI (Arc Fault Circuit Interrupter), which is mainly used in middle sizes of distributed PV system, such as 20~200KW rooftop solar system. Its main function is to detect the arc fault of the PV strings and disconnect the string cables when arc fault occurs.
Application Diagram of FR-DCBS-AFS8B
Key Technical Specifications
| Classification | Item | Parameter |
Arc detection | Maximum number of detection channels | 8 channels |
| Current range | ±15A | |
| Maximum system voltage | DC1000V | |
| Arc type | UL1699B(Type 1) | |
Current measurement | Maximum number of detection channels | 8 channels |
| Current range | -20A~+20A | |
| Rated current | -10A~+10A | |
| Imbalance offset | ≤±0.1A | |
| Temperature drift | ≤±0.005A/℃ | |
| Linearity | ≤1%FS | |
Local display(Inside) | Channel number, current, alarm ,etc | Dot matrix display (LCD) |
| Operating status indicator | 2 LEDs respectively indicate power supply and communication status | |
Local operation | Operation content | Display operating status and set parameters |
| Keys | 4 | |
RS-485 | Communication protocol | Modbus-RTU |
| Communication rate | 2400/4800/9600/19200/38400 bps | |
| Byte format | 8N1, 8O1, 8E1 | |
Power supply and consumption | Input voltage of power supply | 85~265VAC |
| Maximum input current | 0.35A | |
| Maximum power consumption | ≤30W | |
Environment | Operating Temperature | -30℃～+60℃ |
| Storage temperature | -40℃～+85℃ | |
| Operating humidity | 0～95% | |
| Waterproof level | IP65 |
