Siemens siprotec 7SA6 User Manual

Technical Data
10-18 7SA6 Manual
C53000-G1176-C133-1
characteristics see Figure 10-5
Tolerances times 1 % of set value or 10 ms
Drop-off to pick-up ratio current approx. 0.95 for I/I
N
≥ 0.5
voltage approx. 0.95 for 3U
0
≥ 1 V
The set times are pure delay times.
1) Secondary values based on I
N
= 1 A; for I
N
= 5 A the current values must be multiplied by 5.
Inrush Stabilization Second harmonic content for inrush 10 % to 45 % (steps 1 %)
blocking referred to fundamental wave
Inrush blocking is cancelled above 0.50 A to 25.00 A
1
) (steps 0.01 A
1
)
Inrush stabilization may be switched effective or ineffective for each individual stage.
1
) Secondary values based on I
N
= 1 A; for I
N
= 5 A they must be multiplied with 5.
Direction
Determination
Direction determination with I
E
(= 3I
0
) and 3U
0
with I
E
(= 3I
0
)
and I
Y
(transformer star-point current)
with 3I
2
and 3U
2
(negative sequence quantities)
Limit values
Displacement voltage 3U
0
> 0.5 V to 10.0 V (steps 0.1 V)
Starpoint current of a power
transformer I
Y
> 0.05 A to 1.00 A
1
) (steps 0.01 A)
Negative sequence current 3I
2
> 0.05 A to 1.00 A
1
) (steps 0.01 A)
Negative sequence voltage 3U
2
> 0.5 V to 10.0 V (steps 0.1 V)
“Forward” angle
capacitive Alpha 0° to 360° (steps 1°)
inductive Beta 0° to 360° (steps 1°)
Tolerances pick-up values 10 % of set value
or 5% of nominal current or 0.5 V
“Forward” angle 5°
Re-orientation time after direction change approx. 30 ms
1
) Secondary values based on I
N
= 1 A; for I
N
= 5 A they must be multiplied by 5.

Siemens siprotec 7SA6 Specifications

General

Brand	Siemens
Model	siprotec 7SA6
Category	Relays
Language	English