Data library
8.6 Data sets
3WL/3VL circuit breakers with communication capability - PROFIBUS
System Manual, 03/2011, A5E01051353-02
239
8.6.20
Data set DS 129 Parameters of the protection function and settings for load
shedding and load pick up
The table below shows DS129 that contains the parameters (overload protection, time-lag
class, short-circuit protection, thermal memory, phase loss sensitivity, etc.) of the protection
function, and the settings for load shedding and load pick up.
The table below shows DS129 that contains the parameters of the protection function, and
the settings for load shedding and load pick up:
Table 8- 33 Content of data set 129
Byte
Description
Data
point
Source
WL
Source
VL
Format
Length
(bits)
Scaling
0
Header; value 0x00 00 00 00
—
COM15
COM20
—
32
—
4
Overload parameter I
R
parameter set A
(PS A)
333
ETU
ETU
unsigned
int
16
0
6
Overload protection neutral conductor I
N
PS A
(WL)
334
ETU
—
unsigned
int
16
0
8
Time-lag class t
R
PS A
335
ETU
ETU
unsigned
int
16
–1
10
Short-circuit protection instantaneous I
i
PS A
336
ETU
ETU
unsigned
int
16
1 /
0(VL)
12
Short-circuit protection delayed I
sd
PS A
337
ETU
ETU
unsigned
int
16
1 /
0(VL)
14
Delay time for short-circuit protection t
sd
PS A
338
ETU
ETU
unsigned
int
16
–3
16
Ground-fault protection I
g
PS A
339
ETU
ETU
unsigned
int
16
0
18
Delay time for ground fault t
g
PS A
340
ETU
ETU
unsigned
int
16
–3
20
Ground fault alarm I
g2
PS A
341
ETU
—
unsigned
int
16
0
22
Delay time for ground fault alarm t
g2
PS A
342
ETU
—
unsigned
int
16
–3
24
I
2
t characteristic for delayed short-circuit
protection PS A
343
ETU
ETU
Format
(343)
1
—
25
I
2
t characteristic for ground-fault protection
PS A
344
ETU
ETU
Format
(344)
1
—
26
I
4
t characteristic for overload protection PS A
345
ETU
—
Format
(345)
1
—
27
Thermal memory PS A
346
ETU
ETU
Format
(346)
1
—
28
Phase loss sensitivity PS A
347
ETU
—
Format
(347)
1
—
29
Reserved
—
—
—
—
8
—
30
Cooling time constant PS A
348
ETU
—
unsigned
int
16
0
32
Overload parameter I
R
parameter set B
(PS B)
349
ETU
—
unsigned
int
16
0