DC Arc-Fault Detection and Interruption
Up to 1500V DC System Support
Up to 32 Detection Channels
Audible and Visual Alarm
RS485 Communication
Manual and Automatic Reset
Outdoor Stainless Steel Enclosure
In modern photovoltaic installations, standard combiner boxes and inverters often lack comprehensive arc-fault protection. This creates a critical safety gap. Undetected DC arc faults can quickly escalate into devastating electrical fires, leading to severe equipment damage and prolonged system downtime.
The EKPV-AFCI PV AFCI Protection Combiner Box is engineered to bridge this gap. By consolidating multiple PV strings into streamlined outputs while integrating advanced DC arc-fault detection and interruption, this modular unit instantly identifies dangerous arc faults and disconnects the circuit before a fire can ignite.
The EKPV-AFCI integrates advanced DC arc-fault detection and interruption technology to improve protection on the DC side of solar PV systems.
This combiner box is suitable for solar PV systems up to 1500V DC, meeting the needs of modern commercial and industrial photovoltaic projects.
The unit supports up to 32 arc-fault detection channels, allowing flexible configuration for multi-string solar applications.
Built-in audible and visual alarm functions provide clear fault indication for faster response and maintenance.
With RS485 communication, the EKPV-AFCI can be integrated into monitoring and control systems for remote status management.
The system supports both manual and automatic reset functions, offering flexible operation based on project requirements.
The stainless steel rainproof enclosure is designed for outdoor environments and helps ensure stable operation in demanding conditions.
The EKPV-AFCI operates on a highly efficient, self-sustaining mechanism. It converts high-voltage DC from the PV strings into low-voltage DC to power its internal arc-fault protection controller and relay.
Continuous Monitoring: The sensors constantly scan the DC circuits for abnormal arc signatures.
Instant Detection: Upon detecting a fault, the controller processes the signal in milliseconds.
Safe Interruption: The built-in relay trips, cutting off the affected circuit while triggering the visual and audible alarms.
1. What does AFCI mean in a solar PV system?
AFCI stands for Arc-Fault Circuit Interrupter. In a solar PV system, it is used to detect dangerous arc faults and disconnect the circuit to reduce fire risk.
2. Why is DC arc-fault protection important?
DC arc faults can generate high heat and may lead to fire if not detected in time. DC arc-fault protection helps improve the safety of solar installations.
3. Is the EKPV-AFCI suitable for outdoor use?
Yes. The product features a stainless steel rainproof enclosure designed for outdoor photovoltaic applications.
4. Can this unit be connected to a monitoring system?
Yes. The EKPV-AFCI supports RS485 communication and includes a reserved dry-contact output for external integration.
| Model | EKPV-AFCI |
| Main Function | DC Arc-Fault Detection and Interruption |
|
Working Voltage
|
250~1500VDC
|
| Maximum System Voltage | Up to 1500V DC |
| Detection Channels | 8/16/24/32 |
| Maximum current of protected PV DC series circuit | 20A |
|
Protection Mode
|
High Voltage Relay Cut-off
|
|
Cut-off Time
|
≤2.5s
|
| Alarm Function | Audible and Visual Alarm |
| Communication | RS485 |
| Reset Mode | Manual and Automatic Reset |
| External Interface | Relay Rry Contact Output (normally open) |
| Enclosure Material | Stainless Steel |
| Operating Temperature | -25'C to +55°C |
| Ambient Humidity | ≤ 95% |
| Altitude | ≤ 2000m |
| Protection Degree: | lP65 |
| Installation Method | Wall-mounted |
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EKPV-AFCI-8
EKPV-AFCI-16
EKPV-AFCI-24
EKPV-AFCI-32
