Pdr-MU

Pdr-MU

Active power

This product is available on request only – we will quote price and delivery time.

Product description

Application
The Pw-MU, Pnz-MU, Pz-MU, Pd-MU and Pdr-MU measuring transducers are used to convert and separate the active power in AC or three-phase networks into an impressed DC current and DC voltage signal.

Function
The quantities to be measured reach the analog multiplier via internal current transformers and voltage dividers. Here, the instantaneous values of current and voltage are multiplied and, in a subsequent integration stage, formed as the mean value of a DC voltage corresponding to the active power. Sinusoidal as well as non-sinusoidal AC quantities of any waveform can be measured. The galvanic isolation between the input and output signals is achieved by means of optocouplers. The downstream amplifiers supply the impressed DC current and DC voltage signals. Both outputs are open-circuit and short-circuit proof.
A connection between both outputs is not allowed. An auxiliary voltage is required for "live zero" or fluctuating nominal voltage of >± 20%.
Measuring type
4-wire three-phase current
Load
uneven load

General data

DimensionsHousing B, (45 mm wide) Side A1
Weight370 g

Input

Input variableactive power with alternating or three-phase current
Nominal values
- apparent power50-150 % of apparent power
- alternating currentS = U x I
- three-phase currentS = U x I x 1,732
Rated voltage100 V, 110 V, 230 V, 400 V, 500 V oder 600 V ± 20 %, max. 3,5 VA
Rated current1 A oder 5 A, 0,3 VA
Rated frequency50 Hz, 60 Hz or 400 Hz
Overload continuous
- Current2-fold
- Voltage1.2-fold
Surge overload
- Current20-fold, 1 sec
- Voltage2-fold, 1 sec

Output

Output variablesdouble output
Nominal values0-20 mA / 500 load and 0-10 V / max. 10 mA loadable
Option"live zero" 4-20 mA / 500 load and 2-10 V max. 10 mA loadable (auxiliary voltage required)
Bipolar outpute.g. -20 ... 0 ... +20 mA / 500 load and - 0 ... 0 ... +10 V / max. 10 mA loadable
Zero point booste.g. 0-10-20 mA / 500 load and 0-5-10 V / max. 10 mA loadable

Transmission behavior

Accuracy± 0,5 %
Voltage influence< 0.1 % at ± 10 % of nominal voltage
Frequency influence< 0.3 % at 10 Hz frequency change
Phase angle influence< 0.5 % at ± 90 °
Temperature range-15 °C to +20 °C to +30 °C to +55 °C
Temperature influence< 0.3 % at 10 K
Auxiliary voltage influenceno
Load influenceno
External field influenceno
Residual ripple< 30 mVpp
Response time< 300 ms
Open circuit voltagemax. 24 V
Current limitationmax. 2-fold in case of overload
Test voltage&lt; 500 V: 4 kV between input, output, auxiliary voltage &gt; 500 V: 5.2 kV between input and output 4 kV input / output to auxiliary voltage

Auxiliary voltage

(only for "live zero", fluctuating nominal voltage and voltages > 500 V)
Standard230 V AC ± 20 %, 45-65 Hz, 2.5 VA
Options110 V AC ± 20 %, 45-65 Hz, 2.5 VA 24 V DC - 15 % to + 25 %, 2 W 6-30 V AC + DC, 2 VA 36-265 V AC + DC, 2 VA

Installation

MountingSnap-on mounting on top hat rail TH 35 according to DIN EN 60 715
Electrical connectionScrew connection max. 4mm²

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