Design Description; Technical Data - ABB REX 521 Technical Reference Manual, General

REX 521
4.2.
4.2.1.
44
Protection Relay
Technical Reference Manual, General

Design description

Technical data

Table 4.2.1-1 Energizing inputs
Rated frequency
Current inputs
Voltage inputs
Sensor inputs
Table 4.2.1-2 Auxiliary power supplies
Type
Input voltage, AC
Input voltage, DC
Voltage variation
Burden
Ripple in DC auxiliary voltage
Interruption time in auxiliary DC
voltage without resetting
Internal overtemperature
indication
Table 4.2.1-3 Digital inputs
Type
Operating range, DC
Input voltage, DC
Current drain
Power consumption/input
Table 4.2.1-4 Signal outputs
Max. system voltage
Continuous carry
Make and carry for 0.5 s
Make and carry for 3 s
Breaking capacity when control
circuit time-constant L/R <40 ms,
at 48/110/220 V DC
50.0/60.0 Hz
Rated current
Thermal withstand continuously
capability
for 1 s
dynamic current withstand, half-wave
value
input impedance
rated voltage
voltage withstand, continuous
burden at rated voltage
voltage range RMS
voltage range peak
input impedance
input capacitance
PS_87H
(REX521xxHxx)
110/120/220/240 V
110/125/220 V
AC 85...110%, DC
80...120% of rated value
<20 W
max. 12% of the rated DC value (IEC 60255-11)
<40 ms, 110 V
<100 ms, 200 V
+78°C (+75...+83°C)
PS_87H
(REX521xxHxx)
80...265 V DC
DI9: 18...265 V
DI1...DI8: 110/125/220 V
DI9: 24/48/60/110/125/220 V)
~2...25 mA
<0.8 W
250 V AC/DC
5 A
10 A
8 A
1 A/0.25 A/0.15 A
1MRS 751108-MUM
0,2 A/1 A/5 A
1.5 A/4 A/20 A
20 A/100 A/500 A
50 A/250 A/1250 A
<750 mΩ/<100mΩ/
<20 mΩ
100 V/110 V/115 V/120 V
(parametrization)
2 x U (240 V)
n
<0.5 VA
9.4 V RMS
± 12 V
>4.7 MΩ
<1 nF
PS_87L
(REX521xxLxx)
-
24/48/60 V
DC 80...120% of rated value
<15 ms, 24 V
<50 ms, 48 V
PS_87L
(REX521xxLxx)
18...265 V
DI1...DI9:
24/48/60/110/125/220 V