ABB REX 521, Technical Reference Manual, General

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1MRS 751108-MUM Protection Relay
Technical Reference Manual, General
REX 521
31
Table 4.2.1-3 Digital inputs
Type PS_87H
(REX521xxHxx) PS_87L
(REX521xxLxx)
Operating range, dc 80…265 V dc
(for DI9 18...265 V) 18...265 V
Input voltage, dc 110/125/220 V (for DI9
also 24/48/60 V) 24/48/60/110/125/220 V
Current drain ~2…25 mA
Power consumption/input <0.8 W
Table 4.2.1-4 Signal outputs
Max system voltage 250 V ac/dc
Continuous carry 5 A
Make and carry for 0.5 s 10 A
Make and carry for 3 s 8 A
Breaking capacity when control circuit time-
constant L/R <40 ms, at 48/110/220 V dc 1 A/0.25 A/0.15 A
Table 4.2.1-5 Power outputs
Max system voltage 250 V ac/dc
Continuous carry 5 A
Make and carry for 0.5 s 30 A
Make and carry for 3 s 15 A
Breaking capacity when control circuit time
constant L/R <40 ms, at 48/110/220 V dc 5 A/3 A/1 A
Minimum contact load 100 mA, 24 V ac/dc (2.4 VA)
TCS (Trip-circuit
supervision) Control voltage range 20…265 V ac/dc
Current drain through
the supervision circuit approx. 1.5 mA (0.99…1.72 mA)
Minimum voltage
(threshold) over a
contact 20 V ac/dc (15…20 V)
Table 4.2.1-6 Environmental conditions
Specified service temperature range -10…+55
°
C
Transport and storage temperature range -40…+70
°
C
Enclosure class Front side, flush-mounted IP 54
Rear side, connection terminals IP 20
Dry heat test according to IEC 60068-2-2
Dry cold test according to IEC 60068-2-1
Damp heat test, cyclic according to IEC 60068-2-30,
r.h. = 95%, T = 25…55
°
C
Storage temperature tests according to IEC 60068-2-48