LUMEL
The P43 transducer is a programmable digital instrument destined for measurement and parameter conversion of 3 or 4-wires power networks, in balanced and unbalanced systems.
It ensures the measurement and conversion of measured values upto 4 standard analog current signals. The value of each measured quantity can be transmitted to the master system by the RS-485 or USB interface. Two relay outputs signal the overflow of selected quantities, and the pulse output can be used for the consumption monitoring of the 3-phase active energy.
Maximal and minimal values are measured for all quantities. Additionally, there is the possibility to accommodate the transducer to external measuring transformers. The actualization time of all available quantities does not exceed 1 second.
All quantities and configuration parameters are accessible through the RS-485 interface and the USB interface. Transducer output signals are galvanicaly isolated from the input signal and the supply. The transducer housing is made of a self-extinguishing plastic. Outside the transducer, there are socket-plug screw terminal strips.
Quantities measured and calculated by the transducer:
• phase voltages U1, U2, U3
• phase–to-phase voltages U12, U23, U31
• 3-phase mean voltage U
• phase-to-phase mean voltage UPP
• three-phase mean current I
• phase currents I1, I2, I3
• phase active powers P1, P2, P3
• phase reactive powers Q1, Q2, Q3
• phase apparent powers S1, S2, S3
• phase active power factors Pf1, Pf2, Pf3
• reactive/active ratio of power factors tgϕ1 ,tgϕ2 ,tgϕ3
• three-phase mean power factors Pf, tgϕ
• three-phase active, reactive and apparent powers P, Q, S
• active mean power (e.g.15 min.) Pav
• three-phase active and reactive energy Ept, Eqt,
• frequence f
Measuring ranges and admissible basic errors
Measured | Measuring | L1 | L2 | L3 | Σ | Intrinsic error |
Current 1/5A | 0.02...6 A~ | • | • | • |
| ± 0.2% |
Voltage L-N | 2.9...276 V~ | • | • | • |
| ± 0.2% |
Voltage L-L | 10...480 V~ | • | • | • |
| ± 0.5% |
Frequency | 45.0...66.0 Hz | • | • | • |
| ± 0.2% |
Active power | -1.65 kW...1.4 | • | • | • | • | ± 0.5% |
Reactive power | -1.65 kvar...1.4 | • | • | • | • | ± 0.5% |
Apparent power | 1.4 VA...1.65 | • | • | • | • | ± 0.5% |
Tangens j | -1.2...0...1.2 | • | • | • | • | ± 1% |
PF factor | -1...0...1 | • | • | • | • | ± 0.5% |
Input active energy | 0...99 999 999.9 |
|
|
| • | ± 0.5% |
Output active energy | 0...99 999 999.9 |
|
|
| • | ± 0.5% |
Inductive reactive energy | 0...99 999 999.9 |
|
|
| • | ± 0.5% |
Capacitive reactive energy | 0...99 999 999.9 |
|
|
| • | ± 0.5% |
THD | 0...100% | • | • | • |
| 5% |
Power consumption:
- in supply circuit ≤ 6 VA
- in voltage circuit ≤ 0.05 VA
- in current circuit ≤ 0.05 VA
Outputs |
|
Analog output | 0, 2 or 4 programmable outputs: |
Relay output | 0, 2 or 4 relays, |
Serial interface | RS-485, USB |
Transmission protocol | Modbus RTU |
Energy pulse output | output of OC type, passive |
Impulse energy output | O/C passive, acc. to EN 62053-31, |
Ratio of the voltage transformer Ku | 1.0...4000 |
Ratio of the current transformer Ki | 1...10000 |
Protection degree: |
|
– for the housing | IP 40 |
– from terminals (rear side) | IP 20 |
Weight | 0.3 kg |
Overal dimensions | 90 x 120 x 100 mm |
Fixing way | on a 35 mm DIN rail |
Reference and rated operating conditions: | |
– supply voltage | 85...253 V d.c./a.c., 40...400 Hz |
– input signal | 0...0.005...1.2In; 0.05...1.2Un for |
– power factor | -1...0...1 . |
– analog output | -24..-20...0...20...24 mA |
– ambient temperature | -25...23...+55°C |
– storage temperature | -30...+70°C |
– humidity | 25...95% |
– admissible peak factor: |
|
- current | 2 |
- voltage | 2 |
– external magnetic field | 0...400 A/m |
– short duration overload | (5 s) |
– voltage inputs | 2Un (max.1000 V) |
- current imputs | 10 In |
- working position | any |
– preheating time | 5 min. |
Additional errors: | |
In percentage of the intrinsic terror: | < 50% |
– from ambient temperature changes | < 50%/10°C |
Standards fulfilled by the meter |
|
Electromagnetic compatibility: | – noise immunity acc. to EN 61000-6-2 |
Safety requirements: - (According to EN 61010-1 standard) | |
– isolation between circuits: | basic, |
– installation category: | III, |
– pollution level: | 2, |
– maximal phase-to-hearth voltage: | 300 V |
– altitude above sea level: | < 2000 m |
|
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