Control circuit and load circuit
 | Ground 24 V power supply and 48 V power supply Protect the control circuit and the load circuit with PELV, as described in the UL 61800-5-1 standard, by grounding both the 24 V power supply and the 48 V power supply. |
| Ground 24 V power supply and 48 V power supply Protect the control circuit and the load circuit with PELV, as described in the UL 61800-5-1 standard, by grounding both the 24 V power supply and the 48 V power supply. |