Appendix C: Specifications - Eaton 520 Operating Manual

Instruction Leaflet IL01301051E
effective September 2013
Symptom
Circuit breaker tripping and orange
LED (not red) illuminated above
SHORT text or above alarm text (LI
style)
Maintenance Mode
will not shut off

Appendix C: Specifications

Protection Trip Pickup
LONG I = 0.5, 0.6, 0.7, 0.75, 0.8, 0.9, 0.95, 1.0 x I
R
I t
2
SHORT 2, 3, 4, 5, 6, 7, 8, 10 x I
FLAT
SHORT 2, 3, 4, 5, 6, 7, 8, 10 x I
I t
2
INST 2, 3, 4, 6, 8, 10, 12, OFF x I
OFF N/A on LI style
GROUND 0.25, 0.3, 0.35, 0.4, .05, 0.6, 0.75, 1 x I
FLAT
GROUND 0.25, 0.3, 0.35, 0.4, .05, 0.6, 0.75, 1 x I
I t
2
MCR Automatically defined by the breaker type
HIGH INST Automatically defined by
breaker type
Frequency
Temperature range of circuit breaker
Temperature trip of PC board
Relative humidity (noncondensing)
Metering accuracy
Control voltage consumption
Control voltage (if desired for Digitrip 520M
alarm relays)
Alarm Relays (Resistive Load)
AC 0.5A
AC 1A
DC 1A
DC 0.35A
30 EATON www.eaton.com
Probable Cause
Circuit breaker MCR (b) auxiliary switch not
indicating proper state
Circuit breaker mechanism not closing properly
Verify remote switch or
local switch is not on
Maintenance mode was
initially enabled by
communication and is not
available
Trip Time
2, 4 ,7, 10, 12, 15, 20, 24 at 6 x I
n
0.1, 0.2, 0.3, 0.4, 0.5
R
0.1*, 0.3*,0.5* at 8 x I
R
≤ 50 ms
n
0.1, 0.2, 0.3, 0.4, 0.5
n
0.1*, 0.3*, 0.5* at 0.625 x I
n
≤ 30 ms
≤ 30 ms
50, 60 Hz
-20°C to 55°C
85°C
0 to 85%
+- 3% x NF Max Frame Rating (1600A), +-4% RF Max Frame Rating (4000A)
6 watts
24 Vdc ±10%
@ 230 Vac
@ 120 Vac
@ 48 Vdc
@ 125 Vdc
Operating Manual for Series NRX
Possible Solution(s)
Check MCR (b) switch
Check with factory
Restore communication link if possible and
check for possible wiring errors.
Trip Pickup Tolerance
110% ±10% x I
R
±10%
±10%
R
±10%
±10%
±10%
n
Trip Units - Digitrip™ 520/520M
References
Refer to Appendix E or F master
connection diagram
Refer to Section 2 for diagnostics
Trip Time Tolerance
+ 0, –30%
R
Per curve
Per curve
Per curve
Per curve
Per curve