Siemens 3WN6 Operating Instructions Manual page 17
Overcurrent release for ac circuit-breaker
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Also See for 3WN6:
- Operating instructions manual (32 pages) ,
- Manual (28 pages) ,
- Quick start manual (8 pages)
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value U
value f
value P
protec.
protec.
protec.
Ig
tg
g/N
1)
protec. Ig
protec. tg
protec.g/N
= 300 A
= 400 ms
= 2
protec. Ig
protec. tg
protec.g/N
# 400 A
# 500 ms
# 1
protec. Ig
protec. tg
protec.g/N
? 400 A
? 500 ms
? 1
protec. Ig
protec. tg
protec.g/N
= 400 A
= 500 ms
= 1
Menu protec.
In this menu option, setting of the basic protection parame-
ters is carried out. The overcurrent release accepts valid
values only.
protec. I N :
overload protection for the neutral
conductor, 20 to 100 % of I n
protec. I r :
current setting for overload protection,
40 to 100 % of I n
protec. T c :
time-lag class for overload protection,
2 to 30 s or "off" (overload protection
disabled)
protec. I l :
operating value for instantaneous short-
circuit trip, 1.5 x I n to 50 / 65 kA
protec. I d :
operating value for short-time-delay
short-circuit trip, 200 A to 40 kA
protec. t d :
delay for short-time-delay short-circuit
trip, 20 to 400 ms
protec. I g :
operating value for earth-fault trip,20 %
of I n to 1200 A
protec. t g :
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 1600 A
1) value of protec. „g/N"
Type
0
Neutral conductor
–
Earth fault protection
–
Protection is disabled
–
Neutral conductor protection with fourth transformer
N
Separate earth-fault iron-cored transformer
∑
Earth-fault protection by summation
In the case of 3-pole switches, bridge the terminal X300.1
with X300.2.
value I
menu
misc.
protec.
protec.
protec.
protec.
protec.
Inext
IN
Ir
Tc
protec.Inext
protec. IN
protec. Ir
protec. Tc
= 1000 A
= 500 A
= 1100 A
= 6 s
protec.Inext
protec. IN
protec. Ir
protec. Tc
# 1200 A
# 600 A
# 1200 A
# 10 s
protec.Inext
protec. IN
protec. Ir
protec. Tc
? 1200 A
? 600 A
? 1200 A
? 10 s
protec.Inext
protec. IN
protec. Ir
protec. Tc
= 1200 A
= 600 A
= 1200 A
= 10 s
1
2
3
4
N
N
N
–
∑
–
relay
status
protec.
protec.
protec.
Id
td
Ii
protec. Ii
protec. Id
protec. td
= 22000 A
=10000 A
= 200 ms
protec. Id
protec. td
protec. Ii
# 20000 A
# 8000 A
# 150 ms
protec. Ii
protec. Id
protec. td
? 8000 A
? 150 ms
? 20000 A
protec. Ii
protec. Id
protec. td
= 20000 A
= 8000 A
= 150 ms
value f
value P
protec.
misc.
misc.
U>
I_ab
misc. U<
misc. I_ab
= 500 V
= 800 A
misc. U<
misc. I_ab
#600V
#1000A
misc. U<
misc. I_ab
?600V
?1000A
misc. U<
misc. I_ab
=600V
=1000A
misc.
misc.
f<
U>
misc. f<
misc. U>
=53Hz
=250V
misc. f<
misc. U>
#54Hz
#350V
misc. U>
misc. f<
?350V
?54Hz
misc. U>
misc. f<
=350V
=54Hz
Menu misc.
In this menu option, setting of additional protective parameters
is carried out.
5
misc. ZSI:
–
misc. I
2
t
:
d
∑
2
misc. I
t
:
d
misc. mem:
misc. phasl:
misc. syml:
Measured values are examples
value U
value I
status
misc.
misc.
misc.
misc.
I2td
I_an
ZSI
misc. I2td
misc. I_an
misc. ZSI
=on/off
= 400 A
=on/off
misc. I2td
misc. I_an
misc. ZSI
#on/off
#500A
#on/off
misc. I_an
misc. ZSI
misc. I2td
?500A
?on/off
?on/off
misc. I_an
misc. ZSI
misc. I2td
=500A
=on/off
=on/off
misc.
misc.
misc.
symU
f>
EF
misc. symU
misc. f>
misc. EF
=40%
=47Hz
=30kW
misc. symU
misc. f>
misc. EF
#50%
#46Hz
#20kW
misc. f>
misc. EF
misc. symU
?46Hz
?20kW
?50%
misc. f>
misc. EF
misc. symU
=46Hz
=20kW
=50%
enabling and disabling of the short-time
grading control
enabling and disabling of the I
characteristic of the short-time grading
control
enabling and disabling of the I
character of the earth-fault protection
enabling and disabling of the thermal
memory
enabling and disabling of the phase-failure
sensitivity
here, the operate value for permissible
current unbalance of the phases is
determined. The adjustable values are in
the range of 5 to 50 % or "off". If the menu
option relay opt is enabled, on occurrence
of the parameterized unbalance, the output
"optional signal" is set and the circuit-breaker
is tripped after elapse of the delay time set
under relay tx.
menu
relay
misc.
misc.
mem
I2tg
misc. mem
misc. I2tg
=on/off
=on/off
misc. mem
misc. I2tg
#on/off
#on/off
misc. I2tg
misc. mem
?on/off
?on/off
misc. I2tg
misc. mem
=on/off
=on/off
misc.
misc.
symI
phasI
misc. symI
misc. phasI
=40%
=on/off
misc. symI
misc. phasI
#50%
#on/off
misc. symI
misc. phasI
?50%
?on/off
misc. symI
misc. phasI
=50%
=on/off
2
t = constant
2
t = constant
17
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