Siemens 3WX3641-7JR10, Operating Instructions Manual

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24
Version No. g/N 0 1
Neutral conductor –
Earth fault protection
only model S/T
Protection is disabled
Neutral conductor protection with fourth transformer
Separate earth-fault iron-cored transformer
Earth-fault protection by summation
–
* parameter values "g/N"
6 Menu
Menu structure
Menu protec.
In this menu option, setting of the basic protection parameters is
carried out.
protec. IN: overload protection for the neutral conductor,
20 to 100 % of In
protec. Ir: current setting for overload protection,
40 to 100 % of In
protec. Tc: time-lag class for overload protection, 2 to 30 s
or "off" (overload protection disabled)
protec. Il: operate value for instantaneous short-circuit
trip, 1,5 x In bis 12 x In
protec. Id: operate value for short-time-delay short-circuit
trip, 1, 25 x In bis 12 x In
protec. td: delay for short-time-delay short-circuit trip,
20 to 400 ms. If t
d
is set to values above 500 ms,
Id is automatically limited to max. 15 kA
protec. Ig: operate value for earth-fault trip,0, 2 of In to 0, 6
of In (max. 1200 A) (Menu: relay, Alarm or
setting trip)
protec. tg: delay for earth-fault trip, 100 to 500 ms
protec. g/N: specification of type of earth-fault and neutral
conductor protection
protec. Inext: rated current of external earth-fault iron-cored
transformer, 200 to 3200 A
misc.
protec.
value P
value f
value U
value I menu
relay
status
protec.
Id td g/N Inext IN Ir Tc Ii
protec. Id
=10000 A protec. td
= 200 ms
protec.g/N
= 2
protec.Inext
= 1000 A
protec. IN
= 500 A
protec. Ir
= 1100 A protec. Tc
= 6 s
protec. Ii
= 22000 A
protec. protec. protec. protec. protec. protec. protec.
protec. Id
# 8000 A
protec. td
# 150 ms protec.g/N
# 1
protec.Inext
# 1200 A
protec. IN
# 600 A
protec. Ir
# 1200 A protec. Tc
# 10 s
protec. Ii
# 20000 A
protec. Id
? 8000 A
protec. td
? 150 ms protec.g/N
? 1
protec.Inext
? 1200 A
protec. IN
? 600 A
protec. Ir
? 1200 A protec. Tc
? 10 s
protec. Ii
? 20000 A
protec. Id
= 8000 A
protec. td
= 150 ms
protec.g/N
= 1
protec.Inext
= 1200 A
protec. IN
= 600 A
protec. Ir
= 1200 A protec. Tc
= 10 s
protec. Ii
= 20000 A
Ig tg
protec. Ig
= 300 A
protec. tg
= 400 ms
protec. protec.
protec. Ig
# 400 A
protec. tg
# 500 ms
protec. Ig
? 400 A
protec. tg
? 500 ms
protec. Ig
= 400 A
protec. tg
= 500 ms
*
Parameterizing values are examples
Menu value I
In this menu option, all measured currents are displayed. If the
value is less than 18% of In, display of the value is suppressed. The
characters o and ¤ will then appear alternately on the display.
value I aktL: current in the highest-loaded phase
value I maxL: maximum current which has flowed in the
last 15 minutes
value I minL: minimum current which has flowed in the last
15 minutes
value I L1, L2, L3: operating current in phases L1, L2, L3
value I N: current in neutral conductor
value I g: earth-fault current
value IPhSeq: not available
menu value U not available
menu value f not available
menuvalue P not available
misc. protec
value P
value f
value U
value I
menu
relay
status
value I
L3
value I
N
value I
g
value I
PhSeq value I
aktL
value I
maxL
value I
minL
value I
L1
value I
L2
value I L3
= 1405 A
value I N
= 463 A
value I g
= 77 A
valueIPhSeq
= <--
value IaktL
= 1467 A
value ImaxL
= 1580 A
value I minL
= 870 A
value I L1
= 1580 A
value I L2
= 870 A
Measure values are example
N
N