Sungrow DC / DC Converter SD175HV

Wait for at least 5 minutes for electricity discharge from internal battery storage components.

Use testing equipment to ensure no voltage or current is present.

Post temporary warning signs or barriers to prevent unauthorized access to the maintenance area.

Check that all cables are firmly in place and undamaged.

Inspect cables for damage, especially where they contact the metal enclosure.

Have all faults affecting converter safety been cleared?

Wait for at least 5 minutes to discharge electricity from internal battery storage components

Ensure no voltage or current using testing equipment

Post temporary warning signs or barriers to prevent unauthorized access

Ensure all faults affecting converter safety are cleared before rebooting

Avoid touching the printed circuit board or electrostatic sensitive components

Wear an antistatic wrist strap to protect against electrostatic discharge

Converter Inspection and Cleaning

Pre-Maintenance Safety Precautions

Wait for at least 5 minutes to discharge electricity from internal battery storage components.

Use testing equipment to ensure no voltage or current is present.

Post temporary warning signs or barriers to prevent unauthorized access to the maintenance area.

Check if the cable entry is insufficiently sealed or if the gap is excessively large.

Reseal the cable entry if necessary.

Ensure all faults affecting converter safety are cleared before rebooting.

Verify installation and security of the converter

Ensure the converter DC switch is disconnected

Ensure the external circuit breaker is disconnected

Check cable and auxiliary connections

Ensure cables are routed safely or protected against mechanical damage

Seal all unused terminals at the bottom of the converter

Remove any external objects or parts from the top of the converter

Affix warning signs & labels suitably and ensure they are durable