Technical Data; Directional Underpower Protection Guppdup; Introduction - ABB Relion 670 Series Technical Reference Manual

1MRK 505 208-UEN B
Name Values (Range)
I>BlkCont
t1
t2
t3
tCBAlarm
tPulse
6.5.6
6.6
6.6.1
Technical reference manual
Unit
5 - 200 %IB
0.000 - 60.000 s
0.000 - 60.000 s
0.000 - 60.000 s
0.000 - 60.000 s
0.000 - 60.000 s

Technical data

Table 112: CCSRBRF technical data
Function
Operate phase
current
Reset ratio, phase
current
Phase current level
for blocking of
contact function
Reset ratio
Timers
Operate time for
current detection
Reset time for
current detection

Directional underpower protection GUPPDUP

Function description
Directional underpower protection

Introduction

The task of a generator in a power plant is to convert mechanical energy available
as a torque on a rotating shaft to electric energy.
Step Default
1 20
0.001 0.000
0.001 0.150
0.001 0.030
0.001 5.000
0.001 0.200
Range or value
(5-200)% of lBase
> 95%
lBase
(5-200)% of
> 95%
(0.000-60.000) s
10 ms typically
15 ms maximum
IEC 61850
identification
GUPPDUP
Section 6
Current protection
Description
Current for blocking of CB contact
operation in % of IBase
Delay for re-trip
Delay of back-up trip
Additional delay to t2 for a second back-
up trip
Delay for CB faulty signal
Trip pulse duration
Accuracy
± 1.0% of I at I £ I
r r
± 1.0% of I at I > I
r
-
± 1.0% of I at I £ I
r r
± 1.0% of I at I > I
r
-
± 0.5% ± 10 ms
-
-
IEC 60617 ANSI/IEEE C37.2
identification device number
37
P <
SYMBOL-LL V1 EN
185