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Energy management & metering

Power meters, current transformers and concentrators for sub-metering, load monitoring and energy reporting.

Energy management & metering
Photo: Mike Wilson · CC0 · Wikimedia Commons

Energy management starts with measurement. To see where energy is used, compare consumption over time or document savings, you need meters on the relevant circuits and a way to collect their data. ICP DAS supplies both: single-phase and three-phase power meters with current transformers (CTs), and concentrators that read many meters and pass the data on to SCADA, databases or cloud platforms.

Typical tasks

  • Sub-metering of buildings, departments, production lines or individual machines
  • Monitoring switchgear, distribution boards and generators
  • Load profiles and peak demand tracking
  • Energy reporting for audits, ISO 50001 or internal cost allocation
  • Temporary measurements during commissioning or energy audits

Power meters and current transformers

The PM series power meters measure voltage, current, power, power factor and energy on single-phase and three-phase circuits. Many models are supplied with matching current transformers, sized from small branch circuits to several hundred amperes. The meters communicate over Modbus RTU, with Modbus TCP and other interfaces on selected models, so any controller, BMS or SCADA system that supports these protocols can read them.

Power meter concentrators

A concentrator polls a group of meters and makes their data available in one place. The PMC series, and the PMD series with a built-in touch panel, collect data from ICP DAS meters, log it to a memory card and pass it on over Modbus TCP, MQTT, SNMP or FTP, depending on the model. Built-in IF-THEN-ELSE rules can switch loads off when demand approaches a limit. That gives a compact energy monitoring system without a separate server, or a clean data source for an existing SCADA.

Wireless and portable metering

Where cabling to every meter is impractical, iWSN wireless current sensing modules report to a concentrator over a wireless sensor network. For temporary measurements, a portable power monitoring kit packs the metering hardware into a carrying case.

Voltage and current signal conditioning

To measure high voltages and currents with standard analog input modules, voltage attenuators and current transformers from the DNM-800 range convert the signals to levels the I/O can read safely.

Example: sub-metering in a production building

Three-phase PM series meters with current transformers are fitted on the main incomer and on the feeders to each production line. A PMC concentrator reads them over RS-485, logs the values locally and sends them by MQTT to the energy reporting system. If the connection fails, the log on the memory card is sent once it is restored, so no data is lost.

What to check before you choose

  • Single-phase or three-phase, the nominal voltage and the maximum current of each circuit
  • CT type and size: the inner diameter must fit the cable or busbar
  • Which values are needed: energy only, or also power factor, demand and harmonics
  • How the data is collected: an existing SCADA or BMS over Modbus, a concentrator, or a cloud platform via MQTT
  • Space in the distribution board, measured in DIN-rail modules

We can help size meters and current transformers from a single-line diagram or a list of circuits.

Products for this application

CA-SCT24I-200A-L080
CA-SCT24I-200A-L080 CA-SCT24I-200A-L080 Split-Core Current Transformer, 200A Φ24mm, 8 m Wire

The CA-SCT24I-200A-L080 is a single-channel split-core current transformer rated at 200A, with a Φ24mm aperture. Its split-core construction lets it be fitted around an existing conductor, which suits retrofit metering work where the circuit cannot easily be disconnected.Supplied with an 8 m lead, this CT is intended for use with the iWSN and iXN series. The maximum input voltage is 500VAC at 50/60Hz. Accuracy is rated at 1% for the CT alone, and at ±3% or ±0.3A when used with the iWSN-1110X, iWSN-1131P, iWSN-750P and iWSN-757P.Choose this variant when you need a 200A-rated CT with a Φ24mm aperture and an 8 m lead for iWSN or iXN metering installations.ApplicationsEnergy managementPower meteringCurrent monitoring on iWSN and iXN series installations

Běžná cena: 75,00 € per piece · volume discount from 10 pcs
DGW-521 CR
DGW-521 CR DGW-521 RS-232/RS-485/USB to DALI Gateway for Modbus RTU and DCON

The DGW-521 CR is a DIN-rail gateway that lets a host PC, PAC or TouchPAD control DALI lighting devices over serial or USB. It accepts Modbus RTU and DCON from RS-232, RS-485 or USB and translates them to DALI, so existing serial-based control software can address a DALI lighting network without a separate DALI controller.A built-in DALI power supply (16 VDC ±5%, maximum 250 mA) can be switched on or off, which suits installations where the DALI bus is already powered elsewhere. The ID code can be set over the RS-485 interface, which simplifies commissioning. DALI isolation is rated at 1500 VDC.The gateway is intended for DALI lighting systems covering small areas. DALI signal cables must not exceed 300 m. The unit carries CE, UKCA, FCC, RoHS and WEEE marks. The USB driver is listed for Windows XP and Windows 7 only.ApplicationsLighting control for small DALI installationsHost PC, PAC or TouchPAD access to DALI devicesSerial-to-DALI integration in building automation

Běžná cena: 193,00 € per piece · volume discount from 10 pcs
DN-831I-100V-200A CR
DN-831I-100V-200A CR DN-831I-100V-200A Voltage Attenuator and 200 A Current Transformer

DN-831I-100V-200A is a DIN-rail signal conditioner that brings one high-voltage and one high-current measurement point down to levels that standard analog input modules can read. The voltage channel attenuates ±100 V to ±10 V, and the current channel uses a clip-on transformer rated for ±200 A, also scaled to ±10 V.Each channel is galvanically isolated, with 3000 VDC between modules and 3000 VDC channel to channel, which helps keep noise from the high-voltage side out of the measurement chain. The high input impedance and linear attenuation ratio make the output straightforward to scale in software. The clip-on current transformer has a Φ21 mm aperture and a 1.5 m lead.The unit is powered from 10 to 30 VDC, draws 1.8 W, and is housed in plastic for DIN-rail mounting. It is specified for operation from -25 to +75 °C and carries CE, UKCA, FCC, RoHS and WEEE marks.ApplicationsHigh-current measurement using analog input modulesHigh-voltage signal monitoring with analog input modules

Běžná cena: 145,00 € per piece · volume discount from 10 pcs
DN-843I-CT-1 CR
DN-843I-CT-1 CR DN-843I-CT-1 Current Transformer Module, 3-ch ±1 A AC/DC Input

The DN-843I-CT-1 CR is a 3-channel solid core current transformer module for measuring AC and DC currents up to ±1 A. It scales each input to a linear ±1.6 Vpp analog output, so the signal can be read by standard analog input modules such as the I-7017 and I-87017 without needing dedicated high-current hardware.The "I" version is designed to keep input and output signals electrically separated. It provides 3000 VDC intra-module isolation and 3000 Vrms channel-to-channel isolation, which helps reduce noise coupling from the current inputs into the measurement circuit and between channels.The module mounts on a DIN rail, runs from a +10 VDC to +24 VDC supply drawing 1.2 W, and is specified for operation from -25 to +75 °C. Its solid core has an inside diameter of 20.4 x 10.4 mm, and the plastic housing measures 148 x 83 x 39 mm (W x L x D).ApplicationsHigh-current measurement using I-7017 and I-87017 analog input modulesElectrical current monitoring in industrial automation panels

Běžná cena: 222,00 € per piece · volume discount from 10 pcs

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