ET340 CARLOGAVAZZI | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 8
Technical content
Specification are subject to change without notice ET340 DS 310518
- Three phase energy transducer
- Class 1 (kWh) according to EN62053-21
- Accuracy ±0.5% RDG (current/voltage)
- Direct current measurement up to 65AAC
- Energy measurement: kWh and kvarh (imported/ exported); kWh+ by 2 tariffs; kWh per phase
- System variables: kW, kvar, kVA, VLL, VLN, PF, Hz, kWdmd, kWdmd peak
- Phase variables: kW, kvar, kVA, VLL, VLN, A, PF
- Self power supply
- Dimensions: 3-DIN module
- Protection degree (front): IP20
- Optical port
- RS485 Modbus port (optional)
- Digital input (for tariff management)
- Run hour meter
- Easy connection or wrong current direction detection Product description Three-phase transducer. Particularly indicated for active energy metering and for cost allocation in applications up to 65 A (direct connection), with dual tariff management availability. It can measure imported and exported energy or be programmed to consider only the imported one. Housing for DIN-rail mounting, with IP20 front degree protection. The transducer is provided with RS485 Modbus port. Energy Management Energy Transducer Type ET340 How to order ET340-DIN AV2 3 X S1 X Model Range code System Power supply Output Option Type Selection Range code AV2: 208 to 400 VLL AC - 5(65)A (Direct connection) Power supply X: self power supply -20% +20% of the rated measuring input voltage, 45 to 65Hz Output S1: RS485 Modbus port System 3: 3-phase, 3- or 4-wire; 2-phase 3-wire Option X: none
Specification are subject to change without notice ET340 DS 310518 Input specifications Rated Inputs Current type 3-phase loads, direct connection Current range 5(65)A Nominal voltage 208 to 400 VLL AC Accuracy 45 to 65 Hz) Imin=0.25A; Ib: 5A, Imax: 65A; Un: 113 to 265VLN (196 to 460VLL) Imin=0.25A; Ib: 5A, Imax: 65A; from 208 to 400 VLL AC Current From 0.04Ib to 0.2Ib: ±(0.5%RDG+1DGT) From 0.2Ib to Imax: ±(0.5%RDG) Phase-neutral voltage In the range Un: ±(0.5% RDG) Phase-phase voltage In the range Un: ±(1% RDG) Frequency Range: 45 to 65Hz. Active power From 0.05 In to Imax, within Un range, PF=1: ±(1% RDG) From 0.1 In to Imax, within Un range, PF=0.5L or 0.8C: ±(1% RDG) Power factor ±[0.001+1%(1.000 - “PF RDG”)] Reactive power From 0.05 In to Imax, within Un range, sinphì=1: ±(2% RDG) From 0.1 In to Imax, within Un range, sinphì=0.5L or 0.8C: ±(2% RDG) Energies Active energy Class 1 according to EN62053-21 Reactive energy Class 2 according to EN62053-23 Start-up current: 20mA Self-consumption is not measured. Start-up voltage 90VLN Resolution Current 0.001 A Voltage 0.1 V Power 0.1 W or var Frequency 0.1Hz PF 0.001 Energies (positive) 0.1 kWh or kvarh Energies (negative) 0.1 kWh or kvarh Run hour meter 0.01 h Energy additional errors Influence quantities According to EN62053-21 Temperature drift ≤200ppm/°C Sampling rate 4096 samples/s @ 50Hz 4096 samples/s @ 60Hz Max. and Min. data values Energies Max. 99 999 999 Min. 0.01 Variables Max. 9999 Min. 0.01 Run hour meter 0.01 h Memory Energy 10^12 cycles. Energy value is saved every time the less significant digit increases. Programming parameters 10^12 cycles. When a parameter is modified, only the relevant memory cell is overwritten LEDs Right LED Flashing red light pulses according to EN50470-3, EN62052-11, 1000 pulse per kWh (min. period: 90ms) Left LED Fix green light: power-on Blinking red light: power- on and communication in progress Current overloads Continuous 65A, @ 50Hz For 10ms 8450 A Voltage Overloads Continuous 1.2 Un For 500ms 2 Un Input impedance 230VL-N 1.2Mohm 120VL-N 1.2Mohm 5(65) A < 1.25VA
Specification are subject to change without notice ET340 DS 310518 Output specifications RS485 serial port RS485 by screw connection or RS485 by standard female RJ45 connectors (not shielded). Function For communication of measured data, programming parameters Protocol ModBus RTU (slave function) kbaud, Data format even or no parity, Address 1 to 247 (default: 01) Driver input capability 1/8 unit load. Maximum 247 devices on the same bus. Data refresh time 1sec Read command 50 words available in 1 read command RJ45 pin-out According to Modbus standard: A- (pin5), B+ (pin4), GND (pin8) Other ports All the Modbus ports (screw terminals, two RJ45) are in parallel. Only one port at a time can be used. Optical port Description Frontal bi-directional infrared optical coupling with CG optical reader device “Opto-prog” Function For remote communication of measured data and setting of programming parameters Protocol ModBus RTU (slave function) Baud rate 9.6, 19.2 kbaud, even or no parity Address 1 Data refresh time 1 sec Read command 50 words available in 1 read command Optical port LEDs LED axial distance 6.5 mm LED function - Upper LED is a receiver (from the master to the transducer - Lower LED is a transmitter (from the trasducer to the master). Digital input specifications Digital inputs Free of voltage contact Function Tariff management (switch between t1-t2) Number of inputs 1 Contact measurement voltage 5 V Input impedance 1kohm Contact resistance ≤1kohm, close contact ≥100kohm, open contact Overload In case a voltage is erroneously applied to the digital input, the input is not damaged up to 30 VAC/ DC.
Specification are subject to change without notice ET340 DS 310518 General specifications Operating temperature -20 to +65 °C, indoor, (R.H. from 0 to 90% non- condensing @ 40°C) Storage temperature -30°C to +80°C (R.H. < 90% noncondensing @ 40°C) Overvoltage category Cat. III Insulation (for 1 minute) 4000 VAC RMS between measuring inputs and digital/serial output (see table) 4000 VAC RMS Dielectric strength 4000 VAC RMS for 1 minute EMC According to EN62052-11 Electrostatic discharges 15kV air discharge; Immunity to irradiated electromagnetic fields Test with current: 10V/m from 80 to 2000MHz; Electromagnetic fields Test without any current: 30V/m from 80 to 2000MHz; Burst On current and voltage measuring inputs circuit: 4kV Immunity to conducted disturbances 10V/m from 150KHz to 80MHz Surge On current and voltage measuring inputs circuit: 4kV; Radio frequency According to CISPR 22 Standard compliance Safety EN62052-11 Metrology EN62053-21 Approvals CE Connections Cable cross-section area Measuring inputs: max. 16 mm2, min. 2.5 mm2 with/without metallic cable ferrule; Max. screw tightening torque: 2.8 Nm Other terminals 1.5 mm², Min./Max. screws tightening torque: 0.4 Nm Housing Dimensions (WxHxD) 54 x 90 x 63 mm Material Noryl, self-extinguishing: UL 94 V-0 Sealing covers Included Mounting DIN-rail Protection degree Front IP20 Screw terminals IP20 Weight Approx. 240 g (packing included) Power supply specifications Self power supply 208 to 400VAC VLL, -20% +20% 50/60Hz Power consumption ≤ 1W, ≤ 10VA Measuring input Serial output Digital input Measuring input - 4 kV 4 kV Serial output 4 kV - 0 kV Digital input 4 kV 0 kV - Insulation (for 1 minute) between inputs and outputs
Specification are subject to change without notice ET340 DS 310518 Accuracy (according to EN62053-21 and EN62053-23) kWh, accuracy (RDG) depending on the current Class 1 accuracy limits (Active energy) 5(65)A Start-up current: 20mA Percentage error limits for class index B +1.5% +1% -1% -1.5% PF=1 0.25A(Imin) 0.5A(Itr) 5A(In) 65A(Imax) 0.5A(Itr) 5A(In) 65A(Imax)PF=L0.5 or C0.8 (0,1Iref) (0,1Iref) (0.05Iref) kvarh, accuracy (RDG) depending on the current Class 2 accuracy limits (Reactive energy) 5(65)A Start-up current: 20mA Error +2.5% +2% -2% -2.5% sinj =1 0.25A 0.5A 5A(Ib) 65A(Imax) 1A 5A(Ib) 65A(Imax)sinj=0.5 (0.1Ib) (0.25Ib) 0.5A (0.05Ib) (0.1Ib) 1 kWh+ (imported) 2 kWh- (exported) 3 kWh (t1 and t2) 4 kW 5 kW dmd 6 kW dmd peak 7 kvar 8 kVA 9 V 10 A 11 PF 12 Hz
13 Run hour meter
Specification are subject to change without notice ET340 DS 310518 Wiring diagrams Two-phase system, 3-wire (F 315mA) Fig.1 Digital Input Fig.4 RS485 Modbus communication port Fig.5 Additional instruments with RS485 are connected in parallel. The serial output must only be terminated on the last network device connecting terminals A- and T. For connections longer than 1000 m use a signal repeater. Maximum 247 transceivers on the same bus. Three-phase system, 3-wire. Fig.2 Three-phase system, 4-wire. (F 315mA) Fig.3
Specification are subject to change without notice ET340 DS 310518 Wiring diagrams (cont.) Modbus RJ45 female connector connection diagram Fig.6 RS485 (RJ45) Modbus connection Fig.7 4 B+ 5 A-
8 GND
- LED Power-ON LED with communication indication (when blinking) 2. LED LED proportional to kWh reading 3. Optical port Optical port for data transmission or programming 4. RJ45 Modbus RTU ports (RS485) Modbus ports for fast bus connection. The ports are in parallel. The screw terminals can be used as well (same Modbus port). The serial output must only be terminated on the last network device connecting terminals A- (9) and T (7). For connections longer than 1000 m use a signal repeater. Maximum 247 transceivers on the same bus.
Specification are subject to change without notice ET340 DS 310518 Dimensions 4354