9 – 1
9
Electronic components
9.1
Trip units
9.1.1
Overview of function
q
standard
ooptional
-not available
1
fixed
Trip Units
Functions
ETU745
ETU748
ETU776
Basic protective functions
Overload protection (L-tripping)
q
q
q
Short-time-delayed short-circuit protection (S-tripping)
q
q
q
Instantaneous short-circuit protection (I-tripping)
q q
1)
q
Neutral conductor protection (N-tripping)
q q q
ground-fault tripping
o
o
o
Additional functions
Load monitoring
q q q
Leading signal for "L-tripping"
q q q
Thermal memory can be switched on/off
q q q
Zone selective interlocking
o
o
o
Neutral conductor protection
can be switched on/off
q q q
Short-time delayed short-circuit protection
can be switched on/off
q q q
Instantaneous short-circuit protection
can be switched on/off
q
-
q
Short-time delayed short-circuit protection
switchable to I
2
t
q q q
Overload protection
switchable to I
4
t
q q q
Changeable parameter sets
-
-
q
Ground-fault protection to I
2
t
o
o
o
Ground-fault alarm
o
o
o
Display
Alphanumeric display
o
o
-
Graphical display (fixed-mounted)
-
-
q
Communication
Communication via
c
q q q
Communication via
PROFIBUS-DP
o
o
o
Communication via
MODBUS
o
o
o
Communication via Ethernet
o
o
o
Metering function
Metering function
PLUS
o
o
o
Parameterization
Parameterization via rotary coding switches
q q
-
Parameterization via communication (absolute values)
-
-
q
Parameterization via menu (absolute values)
-
-
q
Remote parameterization of basic protective functions
-
-
q
Remote parameterization of additional functions
q q q
Other
Option for connecting to an external 24 V DC power supply
q q q
Summary of Contents for UL 1066
Page 56: ...7 5 7 2 Frame size II fused ...
Page 58: ...7 7 ...
Page 63: ...7 12 8 27 210 0 8 27 210 0 8 27 210 0 3 75 95 2 ...
Page 64: ...7 13 ...
Page 65: ...7 14 7 7 Frame size III fuse carriage ...
Page 66: ...7 15 ...
Page 69: ...7 18 7 9 External sensor for neutral conductor WLNCT2 ...
Page 70: ...7 19 WLNCT3 ...
Page 85: ...9 5 I tripping Ground fault tripping ...
Page 231: ...15 12 Pre assembling the locking module Installing 0767 1 2 3 4 6 5 ...
Page 232: ...15 13 1 Socket head cap screw M5 with washer and nut 7 8 Size 4 5 Nm 45 lb in ...
Page 289: ...23 7 23 3 3 Installing arc chutes 1 2 6 5 PH 2 0043 02 3 4 5 6 For frame size III 3 PH 2 ...
Page 298: ...23 16 6 7 8 9 5 2 1 Size 5 mm ...
Page 333: ......