EL3444 - Technical data

Number of inputs

4 x current

Technology

Distributed-Power-Measurement

Oversampling factor

–

Internal sampling rate

approx. 9.7 ksps (per channel)

Sampling type

simultaneously across all channels

Ground reference

single ended

Distributed clocks

optional (required for distributed power measurement)

Update interval

100 ms

Update time

mains-synchronous

Measured values

Current (and with an EL3453: voltage, active power, reactive power, apparent power, active energy, reactive energy, apparent energy, cos φ, frequency, THD, harmonics (up to the 63rd harmonic)

Measuring voltage

-

Nominal current range

14 A (DC or peak value, corresponds to ~10 Arms )

Technical current measuring range

20 A (DC or peak value, corresponds to ~14 Arms )

Short-time current carrying capacity

70 A (peak currents in the ms range can be even higher)

Measuring error

1 % relative to full scale value (I), 1.25 % calculated values

Measuring procedure

true RMS

Electrical isolation

4500 V

Current consumption Power contacts

–

Current consumption via E-bus

120 mA typ.

Special features

Together with an EL3453, the EL3444 enables the measurement of real power values (for apparent, reactive and active power) via Distributed Power Measurement.

Configuration

via TwinCAT System Manager

Weight

approx. 75 g

Dimensions (W x H x D)

approx. 15 mm x 100 mm x 70 mm (width aligned: 12 mm)

Installation

on 35 mm mounting rail, conforms 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

Protection rating/installation position

IP20/any

Marking^*)

CE, EAC, UKCA