【U-PM】Intelligent Power Meter
Production information
The U-PM series was designed for multi-circuit power measurement, up to 12 single phase or 4 three-phase circuit power input. Applicable to different types of power circuit makes U-PM a valuable option.
Hardware standard built in a RS485 (Modbus) communication port, demand function, data logging and 2MB Flash memory. At the same time, din rail mounting provides easy installation and larger elasticity.
Application
- Electric billing management for rental buildings/apartments
- Marketing food stalls and mobile homes billing management
- School dormitory/exhibition booth electricity billing management
- Store rental booth electricity management
Ordering Information
Specifications
| Electrical Characteristics | |
| Measurement | True RMS |
| Sampling | 128 point/Cycle |
| Update time | 0.5 second |
| Metering system type | 1P2W, 1P3W, 3P3W, 3P4W |
| Input Range | Voltage: PT Primary side ratio: 100V~9999KV PT Secondary side ratio: 50~600V Direct Input: ≤600V(L-L) or ≤400V(L-N) |
| Current | Main circuit input: 333mV CT Primary side ratio: 5~9999A |
| Frequency | 45~65Hz |
| Metering over range | Voltage: 1.2X rated voltage continuous (600V max) Current: 1.2X rated current of CT |
| Power Quality | |
| THD | Total harmonic distortion per phase, per line, average ofvoltage and per circuit, average of current. |
| Indicator light | Power / Communication / System indicator |
| Power consumption | DC 10~60V, 5W |
| Demand | |
| Calculation method | Slide / Fix |
| Calculation cycle | 1~60 minutes |
| Data Logging | |
| Setting | 50 factors can be record at the same time. Time interval can be set from 1~32767, Unit can be set to day, hour, minute, second |
| Memory | 2MB Flash ROM |
| TOU (Time of Use) | |
| 4 Seasons | 1~4 seasons per year |
| 8 Tariff setting | 1~8 each day (For peak, mid peak, off peak per day for billing) |
| Parameters of TOU | AE-Imp, AE-Total, RE- Imp, RE-Total, SE, SE-Total, in every circuit month and previous month. |
| Yearly setting | Tariff setting for 1 year or set up to 5 years |
| Pulse Output (PO) | |
| Output mode | Open collector (O.C.) |
| Output | 30Vdc, 30mA(max) |
| Energy pulse output | 1600 Pulse / kWh；duty cycle 50% |
| Communication | |
| Protocol | Modbus RTU mode |
| Baud rate | 1200/2400/4800/9600/19200/38400/57600/115200 bps |
| Data bits | 8 bits |
| Parity | None / Even / Odd |
| Stop bit | 1 or 2 |
| Address | 1~247 |
| Distance | 1200M max |
| Terminate resistor | 120~300Ω / 0.25W (typical: 150Ω) |
| Environmental Characteristics | |
| Operating temp. | -25~70 °C |
| Humidity rating | 5~95％RH, Non-condensing |
| Temp. coefficient | ≤100 PPM/°C |
| Storage temp. | -30~75°C |
| Storage humidity | 0~95％, Non-condensing |
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Dimensions: 129.6mm(L)x47.2mm(W)x135mm(H)
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Metering System Type Connection
External CT Order Information
