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7PG2113/4/5/6 Performance Specification
©2010 Siemens Protection Devices Limited
Chapter 3 Page 30 of 42
2.11 51N Time Delayed Derived Earth Fault
2.11.1 Reference
Parameter
Value
Is
Setting
0.05, 0.6… 2.5
xIn
char
Characteristic setting
IEC-NI, -VI, -EI, -LTI;
ANSI-MI, -VI, -EI; DTL
Tm
Time Multiplier setting
1.0
t
d
Delay setting
0, 0.01… 20 s
t
res
Reset setting
ANSI DECAYING, 0, 1… 60 s
IDMTL
2 to 20 x Is
I
Applied Current
(for operate time)
DTL
5 x Is
2.11.2 Operate and Reset Level
Attribute
Value
I
op
Operate level
105 %
Is
,
±
4 % or
±
1%
In
Reset level
≥
95 %
I
op
Repeatability
±
1 %
-10 °C to +55 °C
≤
5 %
Variation
f
nom
- 3 Hz to
f
nom
+ 2 Hz
≤
5 %