Publicité
K = standard
k = optional
1) fixed at I
f 20 x I
, max. 50 kA
i
n
Basic protective functions
Overload protection I
r
Adjustable delay time t
r
Short time delayed short-circuit protection I
Instantaneous short-circuit protection I
Neutral pole protection
Earth fault protection
Aditional functions
N-conductor protection can be switched on/off
Short-time delay short-circuit protection can be
switched on/off
Instantaneous short-circuit protection can be swit-
ched on/off
Thermal memory can be switched on/off
Load monitoring
Loading signal "L-tripping" 200 ms
Short-time delayed short-circuit protection converti-
2
ble to I
t
Overload protection convertible to I
Overload protection can be switched on/off
Adjustable N-conductor protection
2
Earth fault switchable to I
t
Earth fault alarm
Convertible parameter sets
Zone selective interlocking
Parameter definition and visualization
Parameter definition via rotary coding switch
Parameter definition via communication (absolute
values)
Parameter definition via menu (absolute values)
Remote parameter definition of the basic functions
Remote parameter definition of the
additional functions
Alphanumeric LCD
Graphic LCD
Measurement functions
"Power" measurement functions
"Harmonic" measurement functions
Communication
Internal-system bus
PROFIBUS-DP communication
Communication via Ethernet
Other
Provision for connecting to an external 24 V DC
power supply
9 – 2
IZM ...-A...
Trip unit for
system
protection
630 – 3200 A
L
K
–
S
–
sd
I
K
i
N
–
G
–
–
–
–
–
–
–
–
4
t
–
–
–
–
–
–
–
K
–
–
–
–
–
–
–
–
–
–
–
–
IZM ...-V...
IZM ...-U...
Trip unit with
Trip unit for
selective
universal
protection
protection
630 – 6300 A
630 – 6300 A
K
K
–
K
K
K
1)
K
K
k
K
k
k
k
K
–
K
–
K
K
–
–
K
K
–
–
K
–
K
–
–
–
K
–
K
–
k
–
–
K
–
K
K
–
–
–
–
–
–
–
K
–
k
–
–
–
k
k
–
–
K
–
k
–
k
K
–
IZM ...-D...
IZM ...-D... +
IZM-XZMR
Digital trip unit
Digital trip unit,
with exclusive
external
configuration
630 – 6300 A
630 – 6300 A
K
K
K
K
K
K
K
K
K
K
k
k
K
K
K
K
K
K
K
K
K
K
K
K
K
K
K
K
K
K
K
K
K
K
k
k
K
K
K
K
–
–
K
K
K
–
K
K
K
K
–
–
K
–
k
k
k
k
K
K
k
K
k
k
K
K
10/02 AWB1230-1407F/GB
Publicité
Chapitres
