Vertiv Liebert APM - Tab. 9-8: Bypass Input

66 Chapter 9 Product Specifications
Frequency
2
Hz 50/60
Transfer time (between
Bypass and Inverter)
ms
Synchronous transfer: (< 2ms
Asynchronous transfer (default): 15 ms (50 Hz), 13.3 ms (60 Hz)
or 40, 60, 80, 100 ms selectable
Bypass voltage
tolerance
%Vac
Upper limit: +10, +15 or +20, default +15
Lower limit –10, -20, -30 or -40, default: -20 (delay time to accept steady bypass voltage: 10
sec)
Bypass frequency
tolerance
% ±10 or ±20, default ±10
Synchronisation -
Window
Hz Rated frequency ± 2 Hz (selectable ± 0.5 to ± 3Hz)
Tab. 9-8: Bypass input
1. Factory set to 400V, 380 or 415V selectable by commissioning engineer.
2. Factory set to 50Hz; 60 Hz selectable by commissioning engineer .