A Multi-Channel Energy Meter lineup that measures and monitors multiple loads simultaneously with a single module.
Designed for large- and small-scale power management systems (PMS, BEMS, FEMS) and remote power metering.
SEMS-Master
Overview
SEMS-Master is the display and configuration unit for the SEMS-6G. While displaying SEMS-6G data, it communicates with upstream SCADA systems, PLCs, and other equipment over multiple TCP/IP and RS-485 (MODBUS RTU) links, and can log data to USB memory.
It also serves as a display and upstream communication converter for up to 24 MPM-330A/AC units, enabling remote monitoring of power data.
Features
- Monitors SEMS-6G loads — up to 24 three-phase or 72 single-phase channels
- Transmits SEMS-6G data upstream (TCP/IP, RS-485)
- Monitors loads on up to 24 MPM-330 units
- Converter function that transmits MPM-330 data upstream (TCP/IP, RS-485)
- Logs data to USB memory as CSV files (logging interval: 3, 5, or 10 minutes)
- Multiple communication interfaces – RS-232, RS-485, TCP/IP
Basic Specifications
| Power Supply | 110V ~ 220VAC |
|---|---|
| Power Consumption | 5VA |
| Operating Temp. / Humidity | -20 ~ 60°C / 5 ~ 90% (non-condensing) |
| Dimensions | 117(W)mm × 117(H)mm × 108(D)mm |
Communication Specifications
| Upstream | TCP/IP, RS-485 Protocol : MODBUS RTU |
|---|---|
| Downstream | RS-232C, RS-485 Protocol : MODBUS RTU Connected devices : SEMS-6G (24ch three-phase / 72ch single-phase), MPM-330 (24 units) |
SEMS Master Configuration
SEMS-6G
Overview
The SEMS series is designed for large- and small-scale power management systems such as PMS (Power Management System), BEMS (Building Energy Management System), FEMS (Factory Energy Management System), and remote power metering systems.
SEMS-6G is designed around the concept of ‘managing as many loads as possible within a minimal footprint’. Starting from a single module handling six three-phase loads (load: 6EA), it scales up to four modules monitoring as many as 24 three-phase loads, and in three-phase applications it can also measure NEUTRAL CURRENT and ZCT.
It enables highly cost-effective remote power metering for retail complexes, officetels, and commercial buildings.
Features
- Monitors up to 24 three-phase or 72 single-phase load channels
- Easy scalability from a single module — 6 three-phase channels (18 single-phase) up to 24 channels (72 single-phase)
- Accuracy suitable not only for remote metering but also for use as a measuring instrument
- Multiple communication interfaces – RS-232, RS-485, TCP/IP
- Displays voltage, current, active power, and total harmonic distortion (THD)
- Versatile internal DO : selectable temperature alarm or energy pulse output
- Reliable expansion with external DI/DO/AI modules
- Internal temperature measurement / Digital Input / Digital Output functions
- Measures line-to-line/phase voltage, current, active/reactive/apparent power, cumulative/current-month/previous-month active/reactive/apparent energy, plus over 30 additional power parameters
- Measures voltage and current phase angles
Measured Parameters
| Parameter | Unit | Range | Accuracy | Remarks |
|---|---|---|---|---|
| Line-to-Line Voltage | V | 69 ~ 710Vrms | 0.3% F.S | Line to Line |
| Phase Voltage | V | 40 ~ 410Vrms | 0.3% F.S | Line to Neutral |
| Current | A | 0.1 ~ 9999 | 0.3% F.S | – |
| NEUTRAL Current | A | 0.03 ~ 9999 | 0.5% F.S | Three-phase |
| Frequency | Hz | 47 ~ 63 | 0.3% F.S | – |
| Power Factor | % | -1.000 ~ 1.000 | 0.5% F.S | Each phase and three-phase |
| Active Power | kW | 0.006 ~ 9,999.999 | 0.5% F.S | Each phase and three-phase |
| Reactive Power | KVAR | 0.000 ~ 9,999.999 | 0.5% F.S | Each phase and three-phase |
| Apparent Power | KVA | 0.006 ~ 9,999.999 | 0.5% F.S | Each phase and three-phase |
| Active Energy | kWh | 0 ~ 99,999,999.9 | 0.5% F.S | Each phase and three-phase |
| Reactive Energy | KVARh | 0 ~ 99,999,999.9 | 0.5% F.S | Each phase and three-phase |
| Apparent Energy | KVAh | 0 ~ 99,999,999.9 | 0.5% F.S | Each phase and three-phase |
| Power THD | % | 0 ~ 100 | 1[%] F.S | Each phase |
| Voltage THD | % | 0 ~ 100 | 1[%] F.S | Each phase |
| Current THD | % | 0 ~ 100 | 1[%] F.S | Each phase |
| Voltage Unbalance | % | 0 ~ 100 | – | Each phase and Total |
| Current Unbalance | % | 0 ~ 100 | – | Total |
| DI | BI | 0 : OFF, 1 : ON | – | – |
| DO | BI | 0 : OFF, 1 : ON | – | – |
| Temperature | ℃ | -20 ~ 110℃ | · 1.0℃(-40~0℃) · 0.5~1.5℃(0~80℃) · 1.5~2.3℃(80~110℃) | – |
Device Ratings
| Power Supply | 100 ~ 240Vac |
|---|---|
| Frequency | 50 ~ 60Hz |
| Power Consumption | Max. 7W |
| Voltage Input | Up to 700Vrms (LINE TO LINE) |
| Current Input | Pri. 30 ~ 500A / Sec. 100mV |
| Temperature Measurement | -20℃ ~ 110℃ |
| DIGITAL INPUT | DRY CONTACT input |
| DIGITAL OUTPUT | AC 250V/5A, DC 30V/5A (resistive load) or PULSE OUTPUT – 500WH PER 1PULSE |
| Operating Temperature | -10 ~ 50℃ |
| Operating Humidity | 10 ~ 85% (NON CONDENSING) |
Communication Specifications
| Interface | DESCRIPTION |
|---|---|
| RS-232 | FULL DUPLEX TXD+, RXD-, GND – 3WIRE 9600 BPS fixed 1.2M |
| RS-485 | HALF DUPLEX MODBUS RTU protocol DATA+, DATA- – 2WIRE 4800, 9600, 19200, 38400 BPS selectable |
| TCP/IP | MODBUS TCP/IP protocol 10/100M BPS Uses CROSS CABLE |
MPM-38s / 34s
Overview
MPM-38s/34s are devices installed in distribution boards, panelboards, and MCC panels of any scale to efficiently monitor individual loads; a single module measures 8/4 three-phase loads (24/12 single-phase). Measurement data can be checked on site directly on the LCD, and remote monitoring is available via the communication interface.
Features
- Compact size and easy installation – off-the-shelf clamp-type CTs sized to the site allow installation without a power outage.
- Industrial communication protocol and scalability – the industrial Modbus RTU protocol ensures compatibility with any PLC or SCADA, and up to 128 units of the same product (our products only) can be networked together.
- 1Ø/3Ø4L dual use – supports both single-phase and three-phase operation without additional configuration.
- Provides a full set of PARAMETERs for power monitoring (VL-N, A, KW, KVAR, KWH, PF, Hz)
- High ACCURACY (voltage/current 0.5%, power 1%)
- Easy data reading – the BLUE BACKLIGHT LCD lets you check the data you need right on site.
Measured Parameters
| Parameter | Unit | Measuring Range | Accuracy | LCD | Communication |
|---|---|---|---|---|---|
| Voltage | V | 40.0 ~ 9999V | (0.5) phase/line-to-line voltage / 1 decimal place | ○ | ○ |
| Current | A | 0.040 ~ 9999A | (0.5) single-phase 1~24ch, three-phase 8ch / 3 decimal places | ○ | ○ |
| Frequency | Hz | 46.0 ~ 65.0Hz | (0.5) 1 decimal place | ○ | ○ |
| Active Power | kW | 0.100 ~ 9999 | (1) single-phase 1~24ch, three-phase 8ch / 3 decimal places | ○ | ○ |
| Reactive Power | KVAR | 0.100 ~ 9999 | (1) single-phase 1~24ch, three-phase 8ch / 3 decimal places | × | ○ |
| Power Factor | % | 1.00 ~ -1.00 | (1) single-phase 1~24ch, three-phase 8ch / 2 decimal places | ○ | ○ |
| Active Energy | kWh | 1 ~ 99,999,999 | (1) single-phase 1~24ch, three-phase 8ch | ○ | ○ |
| Reactive Energy | KVARh | 0.100 ~ 9999 | (1) single-phase 1~24ch, three-phase 8ch | × | × |
| Total Current | A | 0.100 ~ 9999 | 3 decimal places | × | ○ |
| Total Active Power | kW | 0.100 ~ 9999 | 3 decimal places | × | ○ |
| Total Active Energy | kWh | 1 ~ 9,999,999 | – | × | ○ |
Product Appearance · Drawings
