EasyManuals Logo

Siemens SIPROTEC User Manual

Siemens SIPROTEC
776 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #601 background imageLoading...
Page #601 background image
Technical Data
4.9 Earth Fault Protection in Earthed Systems (optional)
SIPROTEC, 7SD5, Manual
C53000-G1176-C169-5, Release date 02.2011
601
Zero Sequence Voltage Stage (U0 inverse)
Zero Sequence Output Stage (power stage)
Inrush Restraint
Pickup value 3I
0P
for I
N
= 1 A 0.05 A to 25.00 A
or
0.003 A to 25.000 A
Increments 0.01 A
Increments 0.001 A
for I
N
= 5 A 0.25 A to 125.00 A
or
0.015 A to 125.000 A
Increments 0.01 A
Increments 0.001 A
Pickup value 3U
0
> 1.0 V to 10.0 V Increments 0.1 V
Voltage factor U
0 inv. minimal
0.1 V to 5.0 V Increments 0.1 V
Additional time delay T
directional
0.00 s to 32.00 s Increments 0.01 s
T
non-directional
0.00 s to 32.00 s Increments 0.01 s
Characteristics See Figure 4-6
Tolerances times 1 % of setting value or 10 ms
Dropout ratio Current Approx. 0.95 for I/I
N
≥ 0.5
Voltage Approx 0.95 for 3U
0
≥ 1V
Pickup value 3I
0P
for I
N
= 1 A 0.05 A to 25.00 A
or
0.003 A to 25,000 A
Increments 0.01 A
Increments 0.001 A
for I
N
= 5 A 0.25 A to 125.00 A
or
0.015 A to 125,000 A
Increments 0.01 A
Increments 0.001 A
Pickup value S FORWARD for I
N
= 1 A 0.1 VA to 10.0 VA Increments 0.1 VA
for I
N
= 5A 0.5VA to 50.0VA
Additional time delay T
3I0P add
0.00 s to 30.00 s; ∞ Steps 0.01 s
Characteristics (see Figure 4-7)
Tolerances pickup values 1 % of set value at sensitive earth current transformer
Tolerances times 5 % of set value or 15 ms at sensitive earth current transformer
6 % of set value or 15 ms at normal earth current transformer /
without earth current transformer
Second harmonic content for inrush 10 % to 45 % Increments 1 %
Referred to fundamental wave
Inrush blocking is cancelled above for I
N
= 1 A 0.50 A to 25.00 A Increments 0.01 A
for I
N
= 5 A 2.50 A to 125.00 A
Inrush restraint may be switched effective or ineffective for each individual stage.

Table of Contents

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Siemens SIPROTEC and is the answer not in the manual?

Siemens SIPROTEC Specifications

General IconGeneral
BrandSiemens
ModelSIPROTEC
CategoryProtection Device
LanguageEnglish

Related product manuals