Carlo Gazazzi's latest energy meter is quick to install
20 July 2014
Carlo Gavazzi's latest energy meter speeds up installation time dramatically when compared to existing methods thanks to features, that allow a 3-phase energy meter and its current transformers to be installed five to ten times faster.
A single EM270 quick-fit meter can measure all electrical variables and energy of two independent three phase loads or six independent single phase loads via its two RJ11 current inputs. The detachable dual voltage terminal blocks allow daisy-chaining of up to 20 meters whilst the RS485 port provides a daisy chain solution to any serial bus.
Available as either Modbus + 2 x Pulse or Modbus + Modbus versions to provide fast and easy data transmission to PCs and PLCs for full load control, whilst all electrical parameters of the installation can be sent via the optional RS485 port for integration with BMS (Building Management Systems) and other standard acquisition-monitoring systems.
A choice of systems can be programmed providing for active and reactive energy measurement and a selection of 3-phase or single phase loads.
Options include: system variables such as W, var, PF, Hz and phase-sequence; single-phase variables including A, VLL, VLN, PF; TRMS measurements copes with distorted sine waves; and energy measurements (total kWh and kvarh) for up to two 3-phase loads or 6 single phase loads.
Instantaneous variables are displayed as 3 x 3 digits, with energy meter readings to 6+1 digit resolution. Accuracy is ±0.75% RDG ( A) for complete meter and CT combination and the meter is rated equivalent to class 1 (kWh) according EN62053-21.
Operating temperature range is from -25°C to +55°C and the front panel offers IP50 protection against dust and water ingress.
The EM270 quick-fit meter is an offspring of the popular EM21 family of meters which are an innovative and cost-effective energy meter solution. The patented self-powering detachable display enables the meter to be mounted either on a front panel with just 72x72mm footprint, or on a DIN-rail in only four modules wide.
Featuring a triple current transformer specifically designed for the EM270 quick-fit meter it comes complete with a pre-wired RJ11 connector; with a single click the triple current transformer is connected to the EM270 providing zero wiring errors and the CT is automatically programmed for CT ratio accuracy and calibration.
As a result, the EM270 quick-fit meter offers a simple to use metering solution for multiple applications which provide the opportunity to optimise and reduce any energy bills making it a popular choice to ensure optimal performance in industries switchgear or distribution panel manufacturers as well traditional panel builders.
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