PV inverters, combiner boxes, and DC cables operate outdoors long term; DC arcing is a primary cause of station fires. PFCS patches cover inverters and combiner equipment, EAPD monitors DC-side anomalies, and the ICOP platform manages PV station groups—helping safeguard power generation.
PV systems have high DC-side voltage and long wiring, presenting distinctive electrical fire risks:
Inverters, DC combiner boxes, and array DC cable joints are the three key locations for electrical fires at PV stations. Traditional fire protection relies mainly on smoke detection, which detects DC-side arcing late, creating a need for protection that suppresses fires locally and actively while monitoring DC anomalies.
This solution uses the PFCS composite agile fire-control patch as the core protection layer, combined with EAPD device DC-side monitoring and the ICOP platform's unified management of station groups, forming a PV electrical active-protection system of "patch suppression — device monitoring — platform management."
Overall approach: Cover the surfaces of core live equipment such as inverters and combiner boxes with PFCS patches; they actively release a clean extinguishing agent when the temperature rises. EAPD devices focus on monitoring DC-side temperature and arc anomalies, giving active early warning before ignition. The ICOP platform connects dispersed station groups to a central control center into one online network. Working together, they help suppress station electrical fires at the source.
Apply and protect—address electrical fires at the source:
Very early warning, actively suppressing before ignition; focuses on DC-side temperature and arc anomalies, reporting anomalies to the central control center.
Connects dispersed station groups to the central control center as one online network, with visualized risks and tiered alerts, supporting centralized O&M of PV stations.
| Protection method | Patch active suppression + device DC monitoring + platform management |
|---|---|
| Extinguishing agent | PFCS clean extinguishing agent (non-conductive, residue-free) |
| Monitoring focus | EAPD very-early DC-side temperature/arc anomaly monitoring |
| Deployment form | Patch maintenance-free; EAPD wall-mounted; ICOP cloud/local deployment |
| Applicable equipment | Inverters, combiner boxes, box transformers, storage containers, and other PV electrical equipment |
| Unified management | ICOP connected to central control center, centralized monitoring of multiple station groups |
Patches actively release agent on-site, suppressing smoldering from DC arcing
EAPD focuses on DC-side anomalies, gaining a response window before ignition
Dispersed stations connected to ICOP, managed on one screen at the control center
Clean agent leaves no residue; equipment can keep running after activation, reducing downtime losses
This solution also applies to commercial and industrial distributed PV, agrivoltaics, and PV carports. The logic is consistent—patch coverage for inverters and combiner equipment, EAPD DC-side monitoring, and ICOP station-group management. It can also be paired with PFCS-D liquid-shield coating to cover irregular narrow gaps and blind spots.
The technical approach references design codes for PV station electrical fire protection and the PFCS series enterprise standards. It uses a clean non-conductive extinguishing agent suited to active protection of live DC-side PV equipment. Combined with EAPD devices and the ICOP platform, it aligns with the "monitoring — warning — local suppression" direction of electrical active protection.
Our technical team will provide combined configuration recommendations for patches, devices, and the platform based on your station scale, equipment models, and current control setup.
Submit Your Request →Solar installations generate power variably: output rises and falls with cloud cover, season, and time of day. The protective logic for cabinets serving a variable-generation source cannot rely on constant power flow as a sanity check, because constant power flow is precisely what the system does not deliver. CHILION's solar solution is engineered around that variability. The protective device interprets sensor signatures against the contemporaneous generation state, so a parameter reading that would be alarming under full generation is recognized as normal under partial generation. The protective logic is also configured for the rapid disconnect requirements that grid-tie solar installations must satisfy on command from the utility. The combined feature set supports a variable-generation architecture without compromising protective response when the response is genuinely required.
Solar installations typically operate under a SCADA framework that already aggregates data from inverters, combiner boxes, and meteorological sensors. CHILION's solar solution is built to slot into that framework. The cabinet instrumentation publishes its state through the same gateway infrastructure that the inverters use, where the architecture permits. Where the customer prefers a separate gateway, that configuration is supported. The dashboard output is structured so that the operations team can read all the parameters for a given combiner section in a single view. The intent is to reduce the dashboard sprawl that variable-generation operations can otherwise accumulate. Operators report that this consolidated view accelerates their response during the rapid state changes that variable generation introduces.
Choosing among equally defensible engineering tradeoffs is part of the work that experienced teams do well and that newer teams sometimes sidestep. In our deployment practice we walk customers through the tradeoff space, document the chosen path with its rationale, and revisit the choice at every annual review. This deliberate approach reduces the kind of regret that surfaces when original assumptions were not stated plainly.
What does a deployment review look like?
This section reflects the deployment practice we've refined across the installed base. Customers who want more detail on the specific topic for their site can request a focused engagement through the contact form on our contact page.
Choosing among equally defensible engineering tradeoffs is part of the work that experienced teams do well and that newer teams sometimes sidestep. In our deployment practice we walk customers through the tradeoff space, document the chosen path with its rationale, and revisit the choice at every annual review. This deliberate approach reduces the kind of regret that surfaces when original assumptions were not stated plainly.
What does a deployment review look like?
This section reflects the deployment practice we've refined across the installed base. Customers who want more detail on the specific topic for their site can request a focused engagement through the contact form on our contact page.
Choosing among equally defensible engineering tradeoffs is part of the work that experienced teams do well and that newer teams sometimes sidestep. In our deployment practice we walk customers through the tradeoff space, document the chosen path with its rationale, and revisit the choice at every annual review. This deliberate approach reduces the kind of regret that surfaces when original assumptions were not stated plainly.
What does a deployment review look like?
This section reflects the deployment practice we've refined across the installed base. Customers who want more detail on the specific topic for their site can request a focused engagement through the contact form on our contact page.
How does the protective logic handle variable output?
Yes, grid-tie rapid disconnect capability is built into the protective logic and is configurable to the utility's requirement set.
Yes, gateway sharing is supported. Where the customer prefers a separate gateway, that configuration is supported as well.
Deployments scale from small commercial roofs to utility-scale plants, with configurations tuned to each scale's operational pattern.