7.2.8
Technical data
Table 39:
EF4PTOC (51N/67N) technical data
Function
Range or value
Accuracy
Operate current
(1-2500)% of
lBase
±
1.0% of I
n
at I
<
I
n
±
1.0% of I at I > I
n
Reset ratio
> 95%
-
Operate current for directional
comparison, Zero sequence
(1–100)% of
lBase
±
2.0% of I
n
Operate current for directional
comparison, Negative sequence
(1–100)% of
lBase
±
2.0% of I
n
Min. operating current
(1-10000)% of
lBase
± 1.0% of I
n
at I < I
n
± 1.0% of I at I >I
n
Minimum operate time for
inverse characteristics
(0.000-60.000) s
± 0.5% ± 25 ms
Timers
(0.000-60.000) s
±
0.5%
±
25 ms
Inverse characteristics, see
and table
17 curve types
1)
ANSI/IEEE C37.112
IEC 60255–151
±
3% or
±
40 ms
0.10 ≤ k ≤ 3.00
1.5 x I
set
≤ I ≤ 20 x I
set
Minimum polarizing voltage,
Zero sequence
(1–100)% of
VBase
±
0.5% of V
n
Minimum polarizing voltage,
Negative sequence
(1–100)% of
VBase
±
0.5% of V
n
Minimum polarizing current,
Zero sequence
(2–100)% of
IBase
±
1.0% of I
n
Minimum polarizing current,
Negative sequence
(2–100)% of
IBase
±
1.0% of I
n
Real part of source Z used for
current polarization
(0.50-1000.00)
W
/phase
-
Imaginary part of source Z used
for current polarization
(0.50–3000.00)
W
/phase
-
Operate time, non-directional
pickup function
30 ms typically at 0.5 to 2 x I
set
-
Reset time, non-directional
pickup function
30 ms typically at 2 to 0.5 x I
set
-
Operate time, directional pickup
function
30 ms typically at 0,5 to 2 x I
N
-
Reset time, directional pickup
function
30 ms typically at 2 to 0,5 x I
N
-
1)
Note: Timing accuracy only valid when 2nd harmonic blocking is turned off.
Section 7
1MRK 505 277-UUS C
Current protection
100
Technical Manual
Summary of Contents for REB650
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