DRB480-xx-1 Handbook
DRB-480 Handbook
4-11. Withstand Voltage
Dielectric Strength testing is carried out as follows:
Primary mains circuit to earth: 2.13kVdc
Primary mains circuits to secondary: 4.25kVdc*
Secondary circuits to earth: 500Vac
*Important Note: This test is not possible with Y capacitors fitted to the unit as damage to these
capacitors may occur.
Routine Dielectric Strength testing is carried out as follows:
Primary mains circuit to Secondary circuits and earth shorted together 2.25kVdc to 2.35kVdc. Secondary circuits to
earth 500Vac.
Connect input and output as follows:
Input ~ Output and
(Protective Earth) shorted together (dotted line ) 2.25 – 2.35kVdc, 2 – 5 sec.
Output ~
(Protective Earth) 500Vac, 2 – 5 sec.
Withstand
Voltage
Tester
Page 17 of 22
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260235 Rev 5, June 2020