Flexible Protection Functions - Siemens SIPROTEC 7SK80 Manual
Motor protection
Hide thumbs
Also See for SIPROTEC 7SK80:
- Manual (512 pages) ,
- Product information (80 pages) ,
- Manual (42 pages)
Table of Contents
Advertisement
Technical Data
4.17 Flexible Protection Functions
4.17
Flexible Protection Functions
Measured Values / Modes of Operation
Three-phase
Single-phase
Without fixed phase reference
Measurement method for I, V
Pickup on
Setting Ranges / Increments
Pickup thresholds:
Current I, I
, I
1
Relationship I
Sensitive ground current I
Voltage V, V
1
Displacement voltage V
Power P, Q
Power factor cosϕ
Frequency
Frequency change df/dt
Dropout ratio > element
Dropout ratio < element
Dropout difference f
Pickup delay (standard)
Pickup delay for I
Command delay time
Dropout delay
Function Limits
Power measurement three-phase
Power measurement single-phase
Relationship I
measurement
380
, 3I
, I
for I
= 1 A
2
0
N
N
for I
= 5 A
N
/I
2
1
Ns
, V
, 3V
2
0
N
for I
= 1 A
N
for I
= 5 A
N
for f
Nom
for f
Nom
/I
2
1
for I
for I
for I
for I
/I
for I
2
1
for I
I, 3I
reverse, Q forward, Q reverse, cosϕ
I, I
N
forward, Q reverse, cosϕ
f, df/dt, binary input
Fundamental,
r.m.s. value (true RMS),
positive sequence system,
negative sequence system,
zero sequence system
exceeding threshold value or
falling below threshold value
0.05 A to 40.00 A
0.25 A to 200.00 A
15 % to 100 %
0.001 A to 1.500 A
2.0 V to 260.0 V
2.0 V to 200.0 V
2.0 W to 10000 W
10 W to 50000 W
-0.99 to +0.99
= 50 Hz
40.0 Hz to 60.0 Hz
= 60 Hz
50.0 Hz to 70.0 Hz
0.10 Hz/s to 20.00 Hz/s
1.01 to 3.00
0.70 to 0.99
0.02 Hz to 1.00 Hz
0.00 s to 60.00 s
0.00 s to 28800.00 s
0.00 s to 3600.00 s
0.00 s to 60.00 s
= 1 A Positive sequence system current > 0.03 A
Nom
= 5 A Positive sequence system current > 0.15 A
Nom
= 1 A Phase current > 0.03 A
Nom
= 5 A Phase current > 0.15 A
Nom
= 1 A Positive or negative sequence system current > 0.1 A
Nom
= 5 A Positive or negative sequence system current > 0.5 A
Nom
E50417-G1140-C344-A4, Release date 08.2010
, I1, I2, I2/I1, V, 3V
, V1, V2, P forward, P
0
0
, I
,I
, V, V
,V
, P forward, P reverse, Q
Ns
N2
N
x
Increments 0.01 A
Increments 1%
Increments 0.001 A
Increments 0.1 V
Increments 0.1 V
Increment 0.1 W
Increments 0.01
Increments 0.01 Hz
Increments 0.01 Hz
Increments 0.01 Hz/s
Increments 0.01
Increments 0.01
Increments 0.01 Hz
Increments 0.01 s
Increments 0.01 s
Increments 0.01 s
Increments 0.01 s
SIPROTEC, 7SK80, Manual
Advertisement
Table of Contents
