Overview
The Inventory Master Wi-Fi electric power meter with Rogowski coil for IoT has multiple built-in communication modules designed for different situations when paired with an IoT energy management system or other remote connection demands. Meanwhile, it can provide various extraction function modules and various electrical parameter measurements to meet different requests from customers. Also, as proof of quality, it is strictly compliant with the standard of IEC 62052-11; IEC62053-22; LVD.
Features
- Multiple Communication Methods
- Power Quality Analysis
- Expanded Function
- Alarm Function
Technical Specifications
| Phase | Three Phase | |
| Measuring Energy Range | 0 kwh to 999999.99 kwh | |
| Measurement (Standard) | Three-phase AC kWh, kVarh, active power, reactive power, quadrant reactive power energy, current, voltage, voltage¤t | |
| Measurement (Optional) | Temperature measurement:4-channel (A, B,C,N) cable temperature monitoring; thermistor: NTC; range: -40 °F to 210.2 °F (-40 °C to 99 °C); accuracy: ±35.6 °F (±2 °C) | |
| Residual current measurement: 1-channel residual current monitoring (need to be paired with residual current transformers) | ||
| Communication (Standard) | RS485 port with modbus-rtu protocol – 1 start bit, 8 data bit, 1 stop bit, no parity; Baud rate 1200 bps to 38400 bps etc infrared communication – constant baud rate 1200 bps | |
| Communication (Optional) | 4G LTE -normal communication module support: lte-fdd: b1/b3/b5/b8 lte-tdd b34/b38/b39/b40/b41 4g lte – global communication | |
| WiFi – support 2.4 GHz or 5 GHz | ||
| LoRaWAN | ||
| LoRa | ||
| NB-IoT | ||
| Output Voltage | 3 × 57.7/100 V, 3 × 220/380V, 3 × 380/660V | |
| Display Type | Analog and digital | |
| Accuracy Class | Class 0.5S, class 1 | |
| Frequency | 50 Hz to 60 Hz | |
| Communication | GRPS(4G,2G), LoRA, NB-IoT, RS485(MODBUS-RTU) | |
| Switch | 4 DI and 2 DO | |
| Display | LCD display with 8 digits and LED indicator | |
| HMI (Standard) | Keypads programming: setting of ct/pt ratio, communication, phase wiring and etc | |
| Software (Standard) | Adjustment software: setting of data upload interval, wifi configuration (account& password), server address, port and etc | |
| Alarm Function (Standard) | Undervoltage, overvoltage, undercurrent, overcurrent, underload, overload, communication disconnection and etc | |
| I/O Function (Optional) | 4-channel or 2-channel DI (digital input) 2-channel DO (digital output) | |
| Voltage Input | Rated Voltage | 3 × 380 Vac to 456 Vac L-L or 3 × 660 Vac to 792 Vac L-L (via direct connection) 3 × 100 Vac to 120 Vac L-L (via PTs) |
| Reference Frequency | 45 Hz to 65 Hz | |
| Power Consumption | < 0.5 VA (each phase) | |
| Current Input | Rated Current | 3 × 2000A AC (via Rogowski Coil) |
| Starting Current | 1% lb (Class 0.5); 4% lb (Class 1) | |
| Power Consumption | < 1 VA (each Phase) | |
| Phase Wiring | 3P4W | 3 phase 4 wire |
| 3P3W | 3 phase 3 wire | |
| Auxilirary Power Supply | Voltage Range | 85 V AC to 265 V AC |
| Power Consumption | < 2 W | |
| Measurement Performance | Standard | IEC 62053-22:2003, IEC 62053-21:2003 |
| kWh Accuracy | Class 0.5S | |
| Pulse output | Active pulse output | |
| Pulse | Width of Pulse | 80 ± 20 ms |
| Pulse Constant | 6400 imp/kWh; 400 imp/kWh | |
| Electric Parameters | U, I, P, Q, S, PF, Hz | |
| Residual Current | 1 way residual current measurement | |
| Power Supply | AC 85 V to 265 V | |
| Temperature Measuring Accuracy | ±35.6 °F (±2 °C) | |
| Operating Temperature | -4 °F to 131 °F (-20 °C to 55 °C) | |
| Dimensions | 2.83 in × 3.45 in × 7.15 in (7.2 cm × 8.78 cm × 7.15 cm) | |
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