LEGRAND Whad 0.8 kVA Manuel D'installation page 21

Whad 0.8, 1, 1.5 kVA
WArning
Never remove the 230V power plug whilst the UPS is in operation: this would disconnect the
earth protection of both the UPS and of the connected loads.
WArning
Since current dispersion towards earth of all the loads are added together in the UPS
protection connector (earth wire), it is essential to check that the sum of these currents does
not exceed 2.7 mA for safety reasons, according to standard EN 62040-1.
WArning
If the red Status Indicator flashes briefly every 3 seconds after all the connected loads are
switched on, it is to signal that the load connected to the UPS is at the limit of toleration.
21