Siemens SIPROTEC 7SJ62 - Negative Sequence Protection (46); Definite-Time Elements (46-1 and 46-2); Inverse-Time Elements (46-TOC)

Technical Data
10-22 7SJ62 Manual
C53000-G1140-C121-1
10.8 Negative Sequence Protection (46)
10.8.1 Definite–Time Elements (46-1 and 46-2)
Pickup and Time
Delay Ranges/
Resolutions
Pickup Current 46-1 0.50 A to 15.00 A
1
)(Increments 0.05 A)
1
)
or ∞ (ineffective, no pickup)
Pickup Current 46-2 0.50 A to 15.00 A
1
)(Increments 0.05 A)
1
)
or ∞ (ineffective, no pickup)
Time Delays 46-1, 46-2 0.00 s to 60.00 s (Increments 0.01 s)
or ∞ (does not expire)
Functional Limits Lower Functional Limit at least one phase current >
0.5 A
1
)
Upper Functional Limit all phase currents ≤ 20 A
1
)
Inherent Operating
Times
Pickup Time approx. 35 ms
Dropout Time approx. 35 ms
Dropout Dropout/Pickup (ratio) 46-1, 46-2 approx. 0.95 for I
2
/I
N
> 0.3
Tolerances Pickup Currents 46-1, 46-2 3% of set value or 50 mA
1
)
Time Delays 1% or 10 ms
Influencing Vari-
ables for Pickup-
Pickup Currents
Power Supply DC voltage in range
0.8 ≤ V
PS
/ V
PS nominal
≤ 1.15 1%
Temperature in range
23º F ≤ ϑ
amb
≤ 131º F 0.06% /10º F
Frequency in range
0.95 ≤ f/f
N
≤ 1.05 1%
Harmonic currents
– Up to 10 % 3
rd
Harmonic 1 %
– Up to 10 % 5
th
Harmonic 1 %
1
) For I
N
= 1 A, divide all limits and increments by 5.
10.8.2 Inverse–Time Elements (46-TOC)
Pickup and Time
Multiplier
Pickup Current 46–TOC 0.50 A to 10.00 A
1
)(Increments 0.05 A)
1
)
Time Multiplier T
I2p
0.05 s to 3.20 s (Increments 0.01 s)
(IEC) or ∞ (does not trip)
Time Multiplier D
I2p
0.50 s to 15.00 s (Increments 0.01 s)
(ANSI) or ∞ (does not trip)
Functional Limits Lower Functional Limit at least one phase current >
0.5 A
1
)
Upper Functional Limit all phase currents ≤ 20 A
1
)
1
) For I
N
= 1 A, divide all limits and increments by 5.
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