Siemens SIPROTEC 4 User Manual

Operating Time ≤ 50 ms (non-directional)
≤ 50 ms (directional)
Dropout Ratio
approx. 0.95 for Ι
Ns
> 50 mA
Measurement Tolerance 2 % of setting value or 1 mA
Operating Time Tolerance 1 % of setting value or 10 ms
Ground Fault Pickup for All Types of Ground Faults (Inverse Time Characteristic)
User-defined Curve (defined by a maximum of 20 value pairs of current and time delay)
Pickup Current 51Ns
for sensitive transformer
for normal 1-A transformer
for normal 5-A transformer
0.001 A to 1.400 A
0.05 A to 4.00 A
0.25 A to 20.00 A
Increments
0.001 A
Increments
0.01 A
Increments
0.05 A
Time multiplier T
Ι51Ns
0.10 s to 4.00 s or ∞ (disabled) Increments
0.01 s
Pickup Threshold
approx. 1.10 · Ι
51Ns
Dropout ratio
approx. 1.05 · Ι
51Ns
for Ι
51Ns
> 50 mA
Measurement Tolerance 2 % setting value or 1 mA
Operating Time Tolerance in Linear Range
7 % of reference value for 2 ≤ Ι/Ι
51Ns
≤ 20 + 2 % current
tolerance, or 70 ms
Ground Fault Pickup for All Types of Ground Faults (Inverse Time Characteristic Logarithmic inverse)
Pickup Current 50Ns
For sensitive transformer
For normal 1-A transformer
For normal 5-A transformer
0.001 A to 1.400 A
0.05 A to 4.00 A
0.25 A to 20.00 A
Increments
0.001 A
Increments
0.01 A
Increments
0.05 A
Starting current factor 51Ns Startpoint 1.0 to 4.0 Increments 0.1
Time factor 51Ns TIME DIAL 0.05 s to 15.00 s; ∞ Increments
0.01 s
Maximum time 51Ns Tmax 0.00 s to 30.00 s Increments
0.01 s
Minimum time 51Ns Tmin 0.00 s to 30.00 s Increments
0.01 s
Characteristics see Figure 2-94
Tolerances
Times
inv.
5 % ± 15 ms for 2 ≤ Ι/Ι
51Ns
≤ 20 and 51Ns TIME DIAL ≥ 1 s
def. 1 % of setting value or 10 ms
Technical Data
4.17 Ground Fault Detection (Sensitive/Insensitive)
SIPROTEC 4, 7SJ62/64, Manual 485
C53000-G1140-C207-8, Edition 08.2016

Siemens SIPROTEC 4 Specifications

General

Brand	Siemens
Model	SIPROTEC 4
Category	Protection Device
Language	English