MCx Energy Measuring and Communication Modules
MCx Energy Measuring and Communication Modules for Compact Circuit-Breakers and Switch-Disconnectors.
For financial and ecological reasons the intelligent use of power is more important than ever. In order to provide greater transparency in the consumption of electrical energy in buildings, production plants or subareas, Moeller is offering a new range of MCx measuring and communication modules for compact circuit-breakers and switch-disconnector up to 630A.
The MCx modules provide all the relevant measuring data for calculating the power consumption: Phase and N conductor currents, rms voltages, active, reactive and apparent power, as well as power factor (cos phi).
The modules are designed for a voltage range of 35-690V, a current range of 1.5-630A and a frequency range of 50-60Hz. The accuracy class is 1.5 and is therefore accurate enough for corporate cost calculations.
The MCx range includes a display device (96 mm x 96 mm) with IP54 protection and a keypad for front mounting in the switch cabinet door. Individual datasets can be selected via the keypad and the measuring results displayed on the device. The data connection to the MCx module is a serial connection via a two-wire cable.
In addition to the local display of the measuring data, this can also be transferred via a serial fieldbus communication or power values via digital S0 pulses. The minimum period duration is 60 ms and each pulse is assigned to a defined energy quantity according to EN62053-31. If the S0 pulses are acquired, for example, via an easy control relay, up to 12 energy values from different MCx devices can be processed and displayed via the MFD-Titan multi-function display.
In addition to the S0 interface, MCx-MB devices also have a Modbus RTU slave interface (RS 485, with selectable baud rate and slave address). This enables users to access all status and control data. Typical communication partners are PLCs, HMIs and control systems.
The measuring and communication module also provides relevant data of the control level. This includes the actual ON/OFF/TRIP states of the circuit-breaker as well as the control of a remote operator for automatic switch functions. The actual values (current, voltage, output data) are transferred and processed further there, for example for consumption optimisation.
Load shedding is a simple method of optimisation. A digital output can be activated when a defined threshold value is reached. Four input/output expansion modules are available for this. The I/O modules are already factory fitted in the basic unit or can be fitted at a later time.
MCx modules are intelligent preprocessing units that provide additional information for the controller and management level: They calculate and output measured value maximum values per time period or form time window values. In terms of diagnostics, MCx modules output load warnings, which detect and likewise signal leakage currents to ground.
MCx modules are available in two sizes, MC2 (1.5-300A) and MC3 (300-600A) as well as 3 or 4-pole versions, and are easy to mechanically install. The power cables and copper strips are connected to the circuit-breaker/switch-disconnector through openings of the MCx. The mounting is implemented on the incoming and outgoing side, and the device can be moved on the cables as required and can also be screwed onto a mounting plate. Integrated current transformers measure the current; to measure the voltage, a contact screw is tightened on each phase so that the tip of the screw contacts the inner conductor. LEDs indicate correct screw contact after the voltage is switched on.
A Business of Eaton's Electrical Sector
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About Eaton's Moeller Business
Eaton's Moeller Business, based in Bonn, Germany, is one of the world's leading manufacturers and suppliers of components and systems concerned with power distribution and automation in industrial, infrastructure and residential building applications. Since April 2008, Moeller has been a part of the Eaton Corporation, a diversified global industrial group with 75,000 employees and an annual turnover of about US$15.4 billion in 2008. As an electrical engineering specialist in IEC products, the Eaton's Moeller Business is a globally strong pillar in Eaton's Electrical Sector.
About Eaton's electrical sector
Eaton's electrical sector is a global leader in power distribution, power quality, control and industrial automation products and services. Eaton's global electrical product lines, including Cutler-Hammer®, Moeller®, Powerware®, Holec®, MEM®, Santak®, and MGE Office Protection Systems™ provide customer-driven PowerChain Management® solutions to serve the power system needs of the data center, industrial, institutional, government, utility, commercial, residential, and OEM markets worldwide.
About Eaton Corporation
Eaton Corporation is a diversified power management company with 2008 sales of $15.4 billion. Eaton is a global technology leader in electrical components and systems for power quality, distribution and control; hydraulics components, systems and services for industrial and mobile equipment; aerospace fuel, hydraulics and pneumatic systems for commercial and military use; and truck and automotive drivetrain and powertrain systems for performance, fuel economy and safety. Eaton has approximately 75,000 employees and sells products to customers in more than 150 countries.
For more information, visit www.eaton.com