Chapter 9 Product Specification
MUST400_User manual_EN_REV02 User Manual
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9.7 Electrical Characteristics (Bypass Input)
Table.9- 7: Bypass Input
Rated
capacity(kVA) Unit
30
60
100
120
200
Rated
AC
Voltage
Vac
380/400/415
three-phase four-wire, sharing neutral with the rectifier input and providing neutral reference for the
output
Rated current
A
46A 380V
91A 380V
151A 380V
182A 380V
302A 380V
43A 400V
87A 400V
144A 400V
174A 400V
288A 400V
42A 415V
83A 415V
138A 415V
166A 415V
276A 415V
Overload
%
125% load, long term
130% load, 1 hour
150% load, 6min
1000% load, 100ms
Superior
protection
bypass line
N/A
Thermal-magnetic breaker, the capacity is 125% of rated current output. IEC60947-2 curve C
Current rating
of
neutral
cable
A
1.7×In
Frequency
Hz
50/60
Switch
time
(between
bypass
and
inverter)
ms
Synchronized switch: ≤1ms
Bypass
voltage
tolerance
%
Vac
Upper limit: +10,+15 or +20, default: +20
Lower limit: -10, -20, -30 or -40, default:-20
(acceptable stable bypass voltage delay: 10s)
Bypass
frequency
tolerance
%
±2.5, ±5, ±10 or ±20, default: ±10
Synchronizatio
n-Window
Hz
Rated frequency±2Hz (selectable from ±0.5Hz
～
±5Hz)
Note:
1. Factory setting is 400V. Commissioning engineers can set to 380V or 415V.
2. Commissioning engineers can set to 50Hz or 60Hz. For example, UPS is set to frequency inverter mode, and then
bypass status will be neglected.
