GE PACSystems RX3i User Manual

GFK-2748C

May 2014

RUN

FLT

GRID 1

2

PSM001

CAL

GRID 1

CAL

GRID 2

Ordering Information

IC694PSK001

IC694PSM001

IC694ACC200

IC694CBL200

IC694ACC201

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© 2014 General Electric Company. All Rights Reserved.

*

Indicates a trademark of General Electric Company and/or its subsidiaries. All other trademarks are the property of their

respective owners.

The PACSystems Power Sync and Measurement (PSM) system monitors two independent

three-phase power grids. It incorporates advanced digital signal processor (DSP) technology

to continuously process three voltage inputs and four current inputs for each grid.

Measurements include RMS voltages, RMS currents, RMS power, frequency, and phase

relationship between the phase voltages of both grids.

The PSM module performs calculations on each captured waveform, with the DSP

processing the data in less than two-thirds of a power line cycle. The PSM module can be

used with wye or delta type three-phase power systems or with single-phase power systems.

The PSM system can be used for applications such as:



Electrical power consumption monitoring and reporting



Fault monitoring



Generator control features for generator to power grid synchronization



Demand penalty cost reduction/load shedding

The PSM system consists of:



PSM module – A standard IC694 module that mounts in an RX3i rack. The PSM

module provides the DSP capability.



Terminal Assembly – A panel-mounted unit that provides the interface between the

PSM module and the input transformers.



Interface cables – Provide the GRID 1 and GRID 2 connections between the PSM

module and the Terminal Assembly.

PSM System Features



Uses standard, user-supplied current transformers (CTs) and potential transformers

(PTs) as its input devices.



Accurately measures RMS voltage and current, power, power factor, frequency,

energy, and total three-phase 15-minute power demand.



Provides two isolated relays that close when the voltage phase relationships between

the two monitored grids are within the specified ANSI 25 limits provided by the RX3i

host controller. These contacts can be used for general-purpose, lamp duty or pilot

duty loads. Voltage and current ratings for these load types are provided in GFK-2749,

PACSystems RX3i Power Sync and Measurement System User's Manual.



Provides a cable monitoring function that indicates when the cables linking the PSM

module and Terminal Assembly are correctly installed.



PSM module and Terminal Assembly are easily calibrated by hardware configuration

using the Proficy* Machine Edition (PME) software.

PSM System. Includes a PSM module, a Terminal Assembly and two interface cables

Replacement PSM module

Replacement Terminal Assembly

One replacement 2m (6.56 ft.) interface cable

PSM replacement parts:

two finger guards

four thumb screws

one relay connector

two grounding lug nuts

PACSystems* RX3i

Power Sync and Measurement System

IC694PSM001-AB and IC694ACC200-A