Smart meters that support WiFi Mesh gateways, WiFi, and RS485 communication have first-class accuracy and an extremely long measuring range. They can accurately measure bidirectional electrical energy and achieve remote monitoring by using WiFi Mesh or WiFi wide-area data transmission.
| Types | Names | Parameters | Parameters | |
|---|---|---|---|---|
| Electrical characteristics | Measurement type | Measurement of RMS harmonic values in three-phase AC systems (3P, 3P+N) | Single-phase AC system (1P2W) | |
| Measurement accuracy | power | ±1%IEC 61557-12 Class 1 | ±1% | |
| Active power | ±1% | ±1% IEC62053-21 Class 1 | ||
| reactive power | ±2% | ±2% | ||
| frequency | ±0.2% | ±0.2% | ||
| Current | ±0.5% (4A to 120A) | ±0.5% (4A to 120A) | ||
| ±1% (1A to 4A) | ±1% (1A to 4A) | |||
| ±3% (0.06A to 1A) | ±3% (0.06A to 1A) | |||
| Voltage | ±0.5% | ±0.5% | ||
| Power factor | ±0.1 | ±0.1 | ||
| Data update rate | Active power: 50ms (RS485) | Active power: 50ms (RS485) | ||
| Input voltage | Rated voltage | 3*230V(LN)/400V(LL) | 230V | |
| Operating voltage range | 90 to 277Vac LN | 100to277VacLN | ||
| 156 to 480 Vac LL | ||||
| Frequency range | 50/60Hz | 50/60Hz | ||
| Forward and reverse power measurement | support | support | ||
| Mechanical characteristics | net weight | ≈100g | ≈68g (SEM1) | |
| Protection level | IP51 Front Display(Present) | IP51 Front Display(Present) | ||
| (IEC60529) | IP20 Whole Meter(Full table) | IP20 Whole Meter(Full table) | ||
| Dimension | 19*94.5*68.5mm | 68.5*94.5*19mm | ||
| Guide rail dimensions | DIN Rail 35mm(35mm standard guide rail) | DIN Rail 35mm(35mm standard guide rail) | ||
| Case Material | Self-extinguishing UL94V-0(Self-extinguishing UL94V-0) | Self-extinguishingUL94V-0(Self-extinguishing UL94V-0) | ||
| Environmental characteristics | Operating temperature | -40℃ to +70℃ | -40℃ to +70℃ | |
| Storage temperature | -40℃ to +85℃ | -40℃ to +85℃ | ||
| Storage humidity | ≤95%RH, non-condensing | ≤95%RHNon-condensing | ||
| Altitude | Up to 2000m | Up to 2000m | ||
| vibration | 10Hz to 50Hz, IEC 60068-2-6 | 10Hz to 50Hz, IEC 60068-2-6 | ||
| Electromagnetic compatibility | electrostatic discharge | IEC 61000-4-2 | IEC 61000-4-2 | |
| Radio frequency electromagnetic field radiation immunity | IEC 61000-4-3 | IEC 61000-4-3 | ||
| Electrical Fast Transient/Bulk Immunity | IEC 61000-4-4 | IEC 61000-4-4 | ||
| Surge immunity | IEC 61000-4-5 | IEC 61000-4-5 | ||
| Conducted immunity | IEC 61000-4-6 | IEC 61000-4-6 | ||
| Power frequency magnetic field immunity | IEC 61000-4-8 | IEC 61000-4-8 | ||
| Voltage sag immunity | IEC 61000-4-11 | IEC 61000-4-11 | ||
| Radiated emission | EN55032 Class B | EN55032 Class B | ||
| Conducted emission | EN55032 Class B | EN55032 Class B | ||
| Safety | Measurement Category | Per IEC61010-1 CATⅢ | Per IEC61010-1 CATⅢ | |
| Current input | An external current transformer is required to achieve insulation. | An external current transformer is required to achieve insulation. | ||
| Overvoltage category | CATⅢ | CATⅢ | ||
| RS485 interface | protocol | MODBUS RTU | MODBUS RTU | |
| Mailing address | 1 to 247 | 1 to 247 | ||
| Transmission mode | half-duplex | half-duplex | ||
| Data types | floating point | floating point | ||
| Transmission distance | Maximum 1000m | Maximum 1000m | ||
| Transmission speed | 2400/4800/9600(default)/19200/38400/115200bps | 2400/4800/9600 (default)/19200/38400/115200bps | ||
| Check bit | NONEdefault)/ODD/EVEN | NONE (default) / ODD / EVEN | ||
| Stop bit | 1 or 2 | 1 or 2 | ||
| Response time | <50 ms | <50 ms | ||
| Voltage sampling port | AC | L1/L2/L3/N | L1/N | |
| Switching current transformer | Rated primary current | 75A/120A (default)/300A/500A/600A (optional) | 75A/120A (default)/300A/500A/600A (optional) | |
| Aperture (unit)mm) | 10 / 15.9 ± 0.5 mm (default) / 23 / 32.8 / 32.8 ± 1 mm (optional) | 10 / 15.7 (default) / 23 / 32.8 / 32.8 ±1mm (optional) | ||
| Wi-Fi parameters | Radio frequencyfrequency band | Wi-Fi@2.4GHz | Wi-Fi@2.4GHz | |
| Maximum RF power | <20dBm | <20dBm | ||
| wireless standards | 802.11b/g/n | 802.11b/g/n | ||
| Transmit power | 802.11b:+17+/-2dBm(@11Mbps,CCK) | 802.11b:+17+/-2dBm(@11Mbps,CCK) | ||
| 802.11g:+16+/-2dBm(@54Mbp,OFDM) | 802.11g:+16+/-2dBm(@54Mbp,OFDM) | |||
| 802.11n:+15+/-2dBm(CHT20,MCS7) | 802.11n:+15+/-2dBm(CHT20,MCS7) | |||
| Receiver sensitivity | 802.11b: -85 dBm (@11Mbps, CCK) | 802.11b: -85 dBm (@11Mbps, CCK) | ||
| 802.11g: -70 dBm (@54Mbps, OFDM) | 802.11g: -70 dBm (@54Mbps, OFDM) | |||
| 802.11n: -68 dBm (@HT20, MCS7) | 802.11n: -68 dBm (@HT20, MCS7) | |||
| Transmission distance | 50~100M(50 meters indoors, 80 meters outdoors in open areas (actual distance depends on local environmental conditions)) | 50~100M(50 meters indoors, 80 meters outdoors in open areas (actual distance depends on local environmental conditions)) | ||
| Antenna parameters | Antenna type | Suction cup antenna (external) | Suction cup antenna (external) | |
| Antenna gain | 1.78dBi | 1.78dBi | ||
| Bluetooth parameters | Bluetooth standard | BLE 5.0 | BLE 5.0 | |
| Bluetooth distance | 20M | 20M | ||
| Bluetooth connection | support | support | ||
| Software parameters | Wireless working mode | STA/AP/AP+STA | STA/AP/AP+STA | |
| Security Mechanism | WEP/WPA-PSK/WPA2-PSK | WEP/WPA-PSK/WPA2-PSK | ||
| Work mode | Pass-through mode | Pass-through mode | ||
| Software watchdog | support | support | ||
| Parameter configuration method | Cloud configuration | AT and BT commands | ||
| DTUConfiguration | Remote server, Bluetooth | Remote server, Bluetooth | ||
| Supports cloud platforms | ValueClouds | ValueClouds | ||
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