EW800A DEM
For an accurate monitoring of the electric energy consumption and relevant line parameters
The Distributed Electricity Meter (DEM) performs an accurate monitoring of the energy usage and line quality of a three-phase load (up to the level of a single machinery). It allows the user to collect in a very distributed way all the relevant energy consumption values and the relevant electrical parameters, including harmonic content up to 51st harmonic.
The data of each single DEM will then be sent to a data manager with either RS485 or Radio interfaces.
A network of DEM connected to a single data manager can count up to 250 devices.
A remote user can get the data from the data manger using the embedded web server in a HTML5 compatible format.
Features:
- Energy meter single- or three-phase
- Measurement of active, reactive and apparent energy
- Measurement of active, reactive and apparent power
- Parameters: current, voltage, power factor
- Direct measure up to 64 ARMS
- Line quality: harmonics (1st…51th), THD
- Up to 250 devices connected to a single Data Manager
- Precision class (active energy): 1%.
- Communication (options): RS485 ModBus, Radio Sub1Ghz (868MHz), Powerline
User Interface:
- Graphic Display 256×96 pixels, with white LED backlight
- Intuitive menus using a resistive touch screen interface
- Data refresh on display: 1 s
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TECHNICAL DATA
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|
|---|---|
| Nominal Phase Current (A): IPN | 48 ARMS direct connection |
| Current Operating Range (A) | 1 … 64 ARMS |
| Max Current Peak (A) | 100 APEAK |
| Nominal Voltage Phase to N (V): UPN | 230 VRMS |
| Nominal Voltage Phase to Phase (V): UPh-Ph | 400 VRMS |
| Nominal Voltage Range Phase to N (V) | 184 … 276 VRMS |
| Nominal Voltage Range Phase to Phase (V) | 319 … 480 VRMS |
| Rated Supply Voltage | Internal supply from any of Phase to N line (230 VAC) |
| Max power consumption | 2W max |
| Operating temp. | -10…55 °C |
| Storage temp. | -25 +75°C |
| Relative umidity | 5- 80% (no condensation) |
| Certification | EN 61010-1 (Safety) EN 61326-1 (EMC) |
| Isolation | Class II, EN 61010-1 CAT III 300 VRMS, Pollution degree: PD2 |
| Mounting Housing |
DIN Rail DIN 43880 |
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ACCURACY:
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|
|---|---|
| Frequency (Hz): | 45 …65 Hz |
| Apparent Energy (kVAh) | ± 1.0% Max |
| Active Energy (kWh) | ± 1.0% Max |
| Apparent Power (kVA) | ± 1.0% Max |
| Active Power (kW) | ± 1.0% Max |
| Current RMS @ IPN | ± 0.5% Max |
| Voltage RMS @ VPN | ± 0.5% Max |
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MEASUREMENTS:
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|---|---|
| Active Energy | E1, E2, E3, ETOT |
| Active Energy (export) | Ee1, Ee2, Ee3, EeTOT |
| Reactive Energy | Eq1, Eq2, Eq3, EqTOT |
| Apparent Energy | Es1, Es2, Es3, EsTOT |
| Active Power | P1, P2, P3, PTOT |
| Active Power (export) | P1e, P2e, P3e, PeTOT |
| Reactive Power | Q1, Q2, Q3, QTOT, inductive or capacitive |
| Apparent Power | S1, S2, S3, STOT |
| Voltage | V1, V2, V3, V12, V23, V31, VAVG, VcAVG |
| Current | I1, I2, I3, In, IAVG |
| Max Voltage | V1+, V2+, V3+, V+ TOT, V1-, V2-, V3-, V- TOT |
| Max Current | I1+, I2+, I3+, I+ TOT, I1-, I2-, I3-,I- TOT |
| Frequency | F |
| Power Factor | PF1, PF2, PF3, PFTOT |
| Total Harmonic Distorsion | THD1, THD2, THD3, THDTOT |
| Voltage harmonic (% of fundamental) | 1st…51th |
| Current harmonic (% of fundamental) | 1st…51th |
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