30/08/2026
IMPORTANT SAFETY ADVISORY OF SOLAR SYSTEM โ ๏ธ
POWER-OFF PROCEDURE DURING SEVERE WEATHER & FLOODINGโ ๏ธ
Phase 1: Before the Flood (If You Have Warning)
Perform a Emergency Shutdown (Rapid Shutdown):โ
Grid/AC Breaker: Switch off the main AC circuit breaker connecting the grid to the Deye inverter.โ
DC Disconnect / PV Isolator: Turn off the DC switch on the side/bottom of the Deye inverter or the external PV isolator to stop incoming power from the solar panels.โ
Battery Breaker: Switch off the circuit breaker or disconnect switch on your lithium or lead-acid battery bank.โ
Load/EPS Breaker: Switch off the breaker supplying power to your home load / back-up loads.โ
2.Disconnect Battery Cables (If Safe): If time and safety permit, disconnect the physical battery cables starting with the negative (-) terminal, assuming the system is completely switched off.โ
3. Protect or Elevate Equipment: If portable or low-mounted (such as ground-mounted batteries), move them to higher ground. Ensure the lower ports of wall-mounted Deye units are sealed if water level is expected to reach them.โ
Phase 2: During the Flood
1. DO NOT Touch the Inverter or System: Never submerge or touch any part of the Deye inverter, battery bank, or connected wiring while standing in water or wet ground.โ
2. Assume All Wires are Live: Solar panels (PV modules) generate DC voltage whenever there is daylight, even if the inverter is turned off or submerged. Submerged PV cables can electrify surrounding water.โ
3. Evacuate the Area: If floodwaters enter the room where the inverter, main switchboard, or batteries are installed, evacuate immediately and avoid contact with the water.โ
Phase 3: After the Floodwaters Recede
1.CRITICAL: Do NOT attempt to turn the Deye inverter, batteries, or solar breakers back on immediately after a flood, even if the unit appears dry on the outside.โ
2. Keep Power OFF: Leave all AC, DC, and battery breakers completely switched off.โ
3. Inspect for Damage visually from a safe distance: Check for visible signs of mud, silt, water intrusion inside the cabinet, or burnt/corroded terminals.โ
Do NOT Wash Internal Components: Do not use tap water, pressure washers, or liquid cleaners to wash silt or mud off the inverter or batteries.โ
Call a Certified Solar Technician / Electrician:โ
Have a licensed professional inspect the internal circuit boards (PCB), insulation resistance (Megger test), and terminal connections.โ
Internal components (capacitors, relays, microcontrollers) damaged by water can short-circuit or catch fire when re-energized.โ
5.Inspect the Battery System Separately: Lithium batteries exposed to floodwaters pose a high risk of internal short circuits and thermal runaway days or weeks after the flood. They must be professionally tested or replaced.โ
6. Check Grounding (Earthing): Ensure the earthing system and surge protection devices (SPDs) were not damaged or displaced by water movement.โ
Shutdown Order (Before Flood)
Follow strictly to avoid arc flashesโ
1.Turn OFF Main AC Grid Breaker.
2.Turn OFF Deye DC/PV Isolator Switch.
3.Turn OFF Battery Breaker / Switch.
4.Turn OFF Backup/Load Circuit Breakers.
Post-Flood Power Restorationโ
Do not bypass these safety checks
1. Ensure the area around the equipment is completely dry.
2. Keep all breakers OFF.
3. Schedule a certified technician for insulation & continuity testing.
4. Only turn on power after receiving official professional clearance.
