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

REX 521
4.1.15.
4.2.
4.2.1.
30
Protection Relay
Technical Reference Manual, General
• optically isolated serial communication port
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• contrast adjustment with temperature compensation
• backlight control

Indication LEDs

The relay is provided with three indication LEDs (green, yellow and red). With
latching/non-latching, steady/blinking light the LEDs indicate different states and
operations of the relay. For more information, refer to Operator's Manual.

Design description

Technical data

Table 4.2.1-1 Energizing inputs
Rated frequency
Current inputs rated current
Thermal withstand
capability
dynamic current withstand, half-wave value
input impedance
Voltage inputs rated voltage
voltage withstand, continuous
burden at rated voltage
Sensor inputs voltage range RMS
voltage range peak
input impedance
input capacitance
Table 4.2.1-2 Auxiliary power supplies
Type
Input voltage, ac
Input voltage, dc
Operating range
Burden
Ripple in dc auxiliary voltage
Interruption time in auxiliary dc
voltage without resetting
Internal overtemperature
indication
50.0/60.0 Hz
continuously
for 1 s
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 dc value
<50 ms, 110 V and
<100 ms, 200 V
+78 ° C (+75...+83 ° C)
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 m Ω /<100m Ω/
<20 m Ω
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 M Ω
<1 nF
PS_87L
(REX521xxLxx)
-
24/48/60 V
dc 80...120% of rated value
<20 ms, 24 V and
<100 ms, 48 V