TB MRI3-ITE(R) 12.00 E
37
7.3.4
Earth fault protection (
ER-Type
)
Setting range
Step
Tolerance
U
E>
U
N
= 100 V:
3 PHA/e-n: 1 - 70 V
1:1: 1- 120 V
U
N
= 230 V:
3 PHA/e-n: 2 - 160 V
1:1: 2 - 300 V
U
N
= 400 V:
3 PHA/e-n: 5 - 300 V
1:1: 5 - 500 V
1 V
1 V
2 V
2 V
5 V
5 V
±
5% from set value or
<0.5% U
N
7.3.5
Determination of earth fault direction (
MRl3-ITER
)
Measurement of active current
component for compensated
systems:
I
E
x cos
ϕ
Measurement of reactive
current component for isolated
systems:
I
E
x sin
ϕ
Angle measuring accuracy:
±
3° at I
E
x cos
ϕ
or I
E
x sin
ϕ
> 5 % I
E
7.3.6
BlockTrip – time**
BLOCK/TRIP
0.1...2.0 s; EXIT
0.01; 0.02; 0.05; 0.1 s
±
1% bzw.
±
10 ms
7.3.7
Switch failure protection
t
CBFP
0.1...2.0 s; EXIT
0.01; 0.02; 0.05; 0.1 s
±
1% bzw.
±
10 ms
7.3.8
Interface parameter
Function
Parameter
Modbus-Protocol
RS485 Open Data Protocol
RS
Slave-Address
1 - 32
1 - 32
RS
Baud-Rate*
1200, 2400, 4800, 9600
9600 (fixed)
RS
Parity*
even, odd, no
“even Parity” (fixed)
*only Modbus Protocol
7.3.9
Parameter for the fault recorder
Function
Parameter
Adjustment example
FR
Number of recordings
(1)* 2 x 8 s; (3)* 4 x 4 s; (7)* 8 x 2 s (with 50 Hz)
(1)* 2 x 6.66 s, (3)* 4 x 3.33 s, (7)* 8 x 1.66 s
(60 Hz)
FR
Saving of the recording at the occurence
P_UP; TRIP; A_PI; TEST
FR
Pre-trigger-time
0.05 s – 8.00 s
* is written over when a new trigger signal arrives
** only
MRI3-ITE
