Eaton Power Xpert® Multi-Point Meter

Product Overview

The Eaton Power Xpert® Multi-Point Meter (PXMP Meter) offers a

highly modular approach to high density metering applications in

electrical power distribution equipment .  The PXMP Meter is com

patible with most 3-phase industrial, commercial, and single-phase

residential low voltage electrical power systems .  Typical applications

include feeder and branch circuit load monitoring found in switch and

panel boards, however higher level voltage metering is possible with

interposing load sensors and potential transformers .

The modularity of the PXMP Meter allows this metering system to

be customized to suit each metering installation based on the number

and type of circuits to be metered .  Up to 10 different PXMP Meter

Modules (PXMP-MMs) can be mixed and matched within a PXMP Meter

Base (PXMP-MB) to accommodate a total of up to 60 poles of metering

channels from a variety of 1. 2. and 3 pole loads .

Various meter modules can be mixed and matched in a single PXMP

Meter Base with support for split core sensors, solid core sensors,

or both based on the circuits that need to be metered .  In addition,

PXMP Pulse Input Modules (PXMP-PIMs) can be installed into a

PXMP Meter base for pulse metering from other electricity, gas,

water, air, or steam meters .

Output modules are available for either remote control over Modbus

or automatic control by the PXMP Meter based on customer config

ured threshold triggers .  A PXMP Energy Portal Module (PXMP-EPM)

is available that can make metered data available to individual ten

ants via an embedded WEB server .  The Energy Portal module also

supports a variety of protocols including Modbus TCP, SMTP, SNMP,

SFTP, HTTP, HTTPS, and more .  In addition to Ethernet, the Energy

Portal Module supports an optional dial up telephone connection for

interface with remote billing software .  A Touch Screen Display is

available for local display of metered data from any circuit .

Ordering Information

The PXMP Meter system offers the flexibility to be used in a variety

of applications and can be customized, using the modular compo

nents, to fit most installations .  Table 1 lists the modular components

available for the PXMP Meter system

Metering Compatibility

Direct Mains Voltage Monitoring with the PXMP Meter is possible

up to a system maximum rating of:

• 480VL:G (corner grounded Delta)

• 347VL:N & 600VL:L maximum for Wye applications

• 480VL:G & L:L maximum on grounded Delta applications

Higher Voltage ratings or floating Delta applications will require the

use of interposing potential transformers to stay within the PXMP

maximum voltage ratings .

PXMP Load Current measurements are directly compatible with

current sensor (instrument transformers) outputs in three ranges of

secondary maximum outputs by using matching range PXMP Meter

Modules:

• 10 mA;

• 100 mA; or

• 333 mV .

Applications requiring 5A Current Transformer outputs require the

use of the CS005 Class 10 Current Sensor as an interposing sen

sor which reduces the input to the meter module to <10ma .  ANSI

C12 .20 class 0 .5% accuracies may be achieved using either the

Eaton CSXXX 10 mA or PXMP-CSXXX 100 mA current sensors and

direct voltage metering .  Interposing Potential and current transform

ers may introduce additional error .

The PXMP Meter supports a variety of current sensors .  Eaton offers

some sensors specially designed for use with our products .  We also

support the use of industry standard current sensors .  When specify

ing current sensors, in general, note that:

• Solid core sensors tend to have higher accuracy than split core

designs .

• Split core sensors are often installed in Retrofit applications where

it is not practical to disconnect the load conductors in order to

mount a solid core sensor .

• Current loop output sensors tend to have accuracy and noise

immunity advantages over 333 mV output sensors .

• 333 mV sensors are very useful since they eliminate open circuit

risks and are available in a wide range of primary current ratings .

• Eaton’s CS005 enables the PXMP Meter to interface to standard

5 A current transformers, either split core or solid core .