How low does the voltage actually go after shutdown?
Our measured result is string voltage falling to ≤1 V within 25 seconds, against the 30 s / 80 V requirement of NEC 690.12. For acceptance we recommend re-measuring at the array boundary with a multimeter on site — treat the measured value, not the datasheet figure, as the evidence.
Can it still shut down if the network is down?
Yes. The protection logic is embedded in a TinyML model inside the terminal MCU, so anomaly detection and shutdown still complete without connectivity. On loss of supply the terminal defaults to the open state — fail-safe by design. This approach is protected by invention patent ZL 2025 1 0001839.5.
How is CS-500 different from a conventional fire-suppression unit?
A conventional unit fights a fire after ignition. CS-500 interrupts the chain reaction at the onset of lithium thermal runaway through oxygen displacement, cryogenic cooling and suppression — preventing deflagration rather than responding to it. The medium is −196°C liquid nitrogen, expanding roughly 696 times on vaporisation; cabin oxygen drops to ≤10%, with no residue and no conductivity.
Does CS-500 need frequent top-up maintenance?
No. The storage unit is a double-walled vacuum dewar with a static evaporation rate of 0%/day and automatic top-up at the low-level threshold. Device response time is 0.01 s, operating automatically with fire-system / BMS interlock. Nitrogen capacity is 500 L with a rated power of 2.0 kW.
Will a retrofit affect the existing module warranty?
No. The device connects in parallel at the module output, leaving the original string topology and inverters unchanged. Fixing is by clamp or screw to the module frame — no roof penetrations, no damage to the waterproof membrane.
Which projects do the shutdown devices fit?
They fit C&I, public building, residential and overseas retrofit projects; the final assessment depends on module scale, communication requirements and the acceptance path.
Is installation complicated?
Installation guides are available as a separate download; we recommend combining sample testing with training.
How does it differ from PLC solutions?
The LDSW wireless solution suits sites where cabling is constrained, reducing retrofit intrusion and improving expansion flexibility.
Does it align with the national standard?
Content is organised around the direction of "Safety Requirements for PV Modules", but for external use we recommend adding the latest standard number and certification details.
How are warranty and after-sales handled?
We recommend presenting these consistently on the after-sales and FAQ pages to define clear delivery and service boundaries.
