24
Siemens · 10/2014
General data
3WL Air Circuit Breakers
3WL air circuit breakers/non-automatic air circuit breakers up to 6300 A (AC), IEC
Communication-capable 3WL circuit breakers
Function Electronic
Trip Unit version
Breaker
Status
Sensor
PROFIBUS
communi-
cation port
Metering
function
Plus
Analog
output
modules
Digital
output
mod-
ules
Digital
input
mod-
ules
ZSI
mod-
ules
Breaker
Data
Adapter
Plus
ETU45B ETU76B
Functions of the communication-capable 3WL circuit breakers
Indication of measured values in trip unit (current only) ✓ ✓ ❏ ❏ ❏ ❏ ❏ ❏ ❏ ❏
Indication of measured values in trip unit
(U, I, P, S, Q, p.f., etc.)
✓ ✓ ❏❏ ✓❏❏❏❏❏
Indication of measured values (current only),
parameters, diagnostic values etc. on display
-- ✓ ❏ ❏ ❏ ❏ ❏ ❏ ❏ ❏
Indication of measured values (U, I, P, S, Q, p.f.,
etc.), parameters, diagnostic values etc. in trip unit
-- ✓❏ ❏ ✓❏❏❏❏❏
Output of measured values (current only)
to rotary coil instruments in control cabinet door
✓ ✓ ❏ ❏ ❏ ✓ ❏ ❏ ❏ ❏
Output of measured values (U, I, P, S, Q, p.f., etc.) to
rotary coil instruments in control cabinet door
✓ ✓ ❏❏ ✓✓❏❏❏❏
Output of digital signals (e.g. reason for tripping,
alarms, status) through contacts
✓ ✓ ❏ ❏ ❏ ❏ ✓ ❏ ❏ ❏
Automatic changeover between
parameter sets A and B
--
✓ ❏❏ ❏❏❏✓❏❏
Read-in of digital signals and forwarding
to PROFIBUS/MODBUS
✓ ✓ ❏ ✓ ❏ ❏ ❏ ✓ ❏ ❏
Transmission of breaker information
on HTML basis locally to a PC
✓ ✓ ✓❏ ❏❏❏❏❏✓
Transmission of breaker information
on HTML basis through Ethernet
✓ ✓ ✓ ❏ ❏ ❏ ❏ ❏ ❏ ✓
Short-time discrimination for
S tripping and G protection
✓ ✓ ❏❏ ❏❏❏❏✓❏
Local display of harmonics analysis and waveform
memory
-- ✓ ❏ ❏ ✓ ❏ ❏ ❏ ❏ ❏
Local storage of harmonics analysis and waveform
memory and transmission through PROFIBUS
✓ ✓ ✓✓ ✓❏❏❏❏❏
Read-out of protection parameters
through PROFIBUS
✓ ✓ ✓ ✓ ❏ ❏ ❏ ❏ ❏ ❏
Read-out and adjustment of protection parameters
through PROFIBUS
--
✓ ✓✓ ❏❏❏❏❏❏
✓ Required
Function can optionally be adopted by several
trip units.
Function can optionally be adopted by one of these modules.
❏ Not necessary for this function, optionally combinable
-- Function not available
© Siemens AG 2015