AC withstanding voltage (ACW): No limit for i <= 50 mA, 30 min. max. for 50 mA < i <= 110 mA. DC withstanding voltage (DCW): No limit for i <= 5 mA, 10 min. max. for 5 mA < i <= 20 mA. For more details, read the user’s manual – chapter of Withstanding Voltage and Insulation Resistance Tests – Starting a Test – Output time limit.