Beckhoff EL34 Series, Documentation

Page: 21 / 295

Product overview
EL34xx 21 Version: 1.5
EL3453
Technical data EL3453
Number of inputs 4 x current, 3 x voltage
Technology 3-phase power measurement
Oversampling-factor –
Distributed-Clocks Optional (for zero crossing time determination)
Accuracy of Distributed Clocks << 1 µs
Update time with every half-wave (10 ms at 50 Hz)
Measured values Current, voltage, active power, reactive power, apparent power, active energy, reactive en-
ergy, apparent energy, fundamental wave power and energy, cos φ, frequency, THD, har-
monics (up to 63rd harmonic), power quality factor
Measuring error 0.3 % relative to full scale value (U/I)
0.6 % calculated values (see documentation)
Mains voltage
(Nominal voltage range) corresponding to AC:
400 V
rms
(UL
X
-N) or 690 V
rms
(UL
X
-UL
Y
) (TN-system: 600 V
rms
)
Technical measuring range Voltage 520 V
rms
(UL
X
-N) or 897 V
rms
(UL
X
-UL
Y
)
common reference potential N/GND
max. time for voltages above 500 V
rms
(UL
X
-N)
or 863 V
rms
(UL
x
-UL
y
): t
max
< 10s *
Maximum permissible overvoltage max. ±736 V (peak value, UL
X
-N, corresponds to 520 V
rms)
or
max. ±1270 V (peak value, UL
X
-UL
Y
, corresponds to 897 V
rms
)*
Internal resolution 24 bits
Input resistance Voltage path typ. 1,5 MΩ
Nominal current range corresponding to AC:
100 mA
rms
;1 A
rms
(default); 5 A
rms
recommended via measuring transformer x A AC/1 A AC
Technical measuring range current 2.25 A (peak value, corresponds to 1.59 A
rms
) or.
9.6 A (peak value, corresponds to 6.8 A
rms
)
Maximum permissible overcurrent max. ±10 A peak value, corresponds to 7 A
rms
* per channel and
max. total current (I1+I2+I3+IN) ±20 A peak value, corresponds to 14 A
rms
*
Peak overload capacity 60 A (sinusoidal) for 1 second, upstream use of current-limiting current transformers recom-
mended
Largest short-term deviation during a
specified electrical disturbance test < ±0.5% of full scale value for current measurement
Input resistance Current path typ. 3 mΩ
Frequency range 15 … 400 Hz
Threshold frequency 4000 Hz
Electrical isolation 4500 V
Current consumption power contacts –
Current consumption E-Bus 260 mA typ.
Weight approx. 100 g
Dimensions (W x H x D) approx. 27 mm x 100 mm x 70 mm (width aligned: 24 mm)
Mounting on 35 mm mounting rail according to EN 60715
Permissible ambient temperature range
during operation 0°C ... +55°C
Permissible ambient temperature range
during storage -25°C ... +85°C
Relative humidity 95 % no condensation
Vibration / shock resistance conforms to EN 60068-2-6 / EN 60068-2-27
EMC immunity / emission conforms to EN 61000-6-2/EN 61000-6-4
Protect. class / installation pos. IP20/any
Approvals CE
*) prolonged operation above the nominal range can lead to impairment of function and/or shortening of operating life