ABB Relion 620 Series - Technical Revision History; Motor Start-Up Supervision STTPMSU; Identification; Function Block

Characteristic Value
Operation mode = "Light+cur-
rent" ,
9 ms
4 ms
12 ms
3
6 ms
4
15 ms
3
9 ms
4
Operation mode = "Light only"
2
9 ms
3
4 ms
4
10 ms
3
6 ms
4
12 ms
3
7 ms
4
Reset time Typically 40 ms
3
<55 ms
4
Reset ratio Typically 0.96
4.9.10 Technical revision history
Table 720: ARCSARC Technical revision history
Technical revision Change
B Internal Improvement.
4.10 Motor start-up supervision STTPMSU
4.10.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE
C37.2 device
number
Motor start-up supervision STTPMSU Is2t n< 49,66,48,51LR
4.10.2 Function block
Figure 396: Function block
1
Phase start value = 1.0 × I
n
, current before fault = 2.0 × set Phase start value , f
n
= 50 Hz, fault
with nominal frequency, results based on statistical distribution of 200 measurements
2
Includes the delay of the heavy-duty output contact
3
Normal power output
4
High-speed output
1MRS757644 H Protection functions
620 series
Technical Manual
757