ABB RET 541 - Design Description; Technical Data

1MRS755225
Transformer Terminal
Technical Reference Manual, General
RET 54_
91
5.2. Design description
5.2.1. Technical data
Table 5.2.1-1 Energizing inputs
Rated frequency 50.0/60.0 Hz
Current inputs rated current 0.2 A/1 A/5 A
thermal withstand
capability
continuously 1.5 A/4 A/20 A
for 1 s 20 A/100 A/500 A
dynamic current withstand, half-wave
value
50 A/250 A/1250 A
input impedance <750 m/<100m
<20 m
Voltage inputs rated voltage 100 V/110 V/115 V/120 V
(parameterization)
voltage withstand, continuous 2 x U
n
(240 V)
burden at rated voltage <0.5 VA
Table 5.2.1-2 Auxiliary power supplies
Type PS1/240V
(RET 541,
RET 543)
PS2/240V
(RET 545
only)
External
display
module
PS1/48V
(RET 541,
RET 543)
PS2/48V
(RET 545
only)
Input voltage, AC 110/120/220/240 V -
Input voltage, DC 110/125/220 V 24/48/60 V
Voltage variation AC 85…110%, DC 80…120%
of rated value
DC 80…120% of rated
value
Burden <50 W
Ripple in DC auxiliary voltage max. 12% of rated DC value (IEC 60255-11)
Interruption time in auxiliary DC
voltage without resetting
<40 ms, 110 V and
<100 ms, 200 V
<60 ms, 48 V and <100
ms, 60 V
Internal overtemperature
indication
+78C (+75…+83C)
Table 5.2.1-3 Digital inputs
Power supply version PS1/240 V (High) PS1/240 V (Medium),
PS2/240 V
PS1/48 V (Low), PS2/48
V
Input voltage, DC 220 V 110/125/220 V 24/48/60/110/125/220 V
Activating range, DC 155...265 V 80...265 V 18…265 V
Current drain ~2…25 mA
Power consumption/input <0.8 W
Pulse counting (specific
digital inputs), frequency range
0...100 Hz