Technical Data; Load Busbar Monitoring Ldmmxu; Identification - ABB RELION 630 Series Technical Manual

1MRS757256 F
7.4.9
7.5
7.5.1
PML630/Compact Load-Shedding Solution
Technical Manual
Name Type
ISLND_PARALL BOOLEAN
FLS_BLOCK BOOLEAN
BLK_BYPASS BOOLEAN
B_SET_CHANGE BOOLEAN
INVAL_CRV BOOLEAN

Technical data

Table 279: PSCSWI technical data
Characteristic
Operation accuracy
Start time 1)2)
Reset time
Reset ratio
Retardation time
Operate time accuracy in
definite time mode
Operate time accuracy in
inverse time mode
1) Current before fault = 0.0 × I
from random phase angle, results based on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
3) Maximum Start value = 2.5 × I

Load busbar monitoring LDMMXU

Identification

Function description
Load busbar monitoring
Power management functions
Values (Range) Unit
1=Parallel
0=Island
0=FALSE
1=TRUE
0=FALSE
1=TRUE
0=FALSE
1=TRUE
0=FALSE
1=TRUE
Details
I = 2 × set Start value
Fault
, f = 50 Hz, fault current in one phase with nominal frequency injected
n n
, Start value multiples in range of 1.5...20
n
IEC 61850
identification
LDMMXU
Section 7
Description
- Island or parallel mode
status of external source
- Fast load shed block from
power source
- Block is bypassed
- One or many basic
setting change
- Invalid curve parameters
Value
At the frequency f = f
±1.5% of the set value or ±0.002
× I
n
Typical: 23 ms (±15 ms)
<45 ms
Typical 0.96
<30 ms
±1.0% of the set value or ±20 ms
±5.0% of the theoretical value or
3)
±20 ms
IEC 60617 ANSI/IEEE
identification identification
- LDMMXU
n
235