Compact current relay and
protection assemblies
RXHL 401 and
RAHL 401
1MRK 509 062-BEN
Page 14
Table 13: Overcurrent protection
Neutral current (0.1 A)
Secondary current
-
0-199 mA
-
0.20-9.99 A
Primary current
-
0-199 mA
-
0.20-9.99 A
-
0-9.99 kA, MA
-
10-99.9 A, kA
-
100-999 A, kA
Frequency F
r
50 Hz
40.0-60.0 Hz
-
60 Hz
50.0-70.0 Hz
-
Accuracy
+/- 0.1 Hz
-
Overcurrent protection
Stage I>
Stage I>>
Stage I>>>
Setting range
(0.2-3.0) x I
r
(1.0-20) x I>
(1.0-20) x I>
Limiting errors of set operate value for current
measuring 50/60 Hz
< 3%
< 3%
< 3%
Consistency of set operate value 50/60 Hz
< 1%
< 1%
< 1 %
Typical reset ratio
95%
Typical operate time I = 0 => 3 x set operate
value
40 ms
Typical reset time I = 3 => 0 x set operate
value
45 ms
Transient over-reach L/R = 50, 100, 200 and
500 ms
< 5%
Typical overshoot time
30 ms
Recovery time at I = 3 x set operate value
< 55 ms
Frequency depen-
dency
F
r
= 50 Hz (45-55 Hz)
< 5%
F
r
= 60 Hz (54-66 Hz)
< 5%
150/180 Hz
Typical 1.5/2.0 x set operate value
250/300 Hz
Typical 3.0/4.0 x set operate value
Influence of har-
monics
100/120 Hz, 10%
< 2%
150/180 Hz, 20%
< 6%
250/300 Hz, 20%
< 3%
Temperature dependence within range -5° C
to +55° C
< 2%
Function
Phase-current
Neutral-current
