A unit of AKRIBIS One
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RMM-Series

Rotating Machine Monitor (RMM)

The Rotating Machine Monitor (RMM) is a continuous partial discharge monitor, which also monitors, stores, and correlates operating dynamics. The RMM provides information as to the health of the stator winding insulation in medium and high voltage motors and generators and can be used on variable frequency drives (VFD). The RMM’s communication options provide timely access to information and notifications to assist asset management and maintenance personnel in their decision-making process.

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Rotating Machine Monitor (RMM)

Overview

The RMM Sees Deeper Into Your Windings

Coupling capacitors alone provide about 10-15% winding coverage, this is equal to the first two or three coils on large motors and hydro generators and the first bar on large turbine generators. However, the RMM can take data from existing RTD Sensors to see deeper into the windings so that users are continuously updated on partial discharge activities in their rotating machines.

Therefore, using an RMM saves costs, provides better visibility, and allows users to avoid engineering and installation of new sensors.

Rotating Machine Monitor (RMM)

Optimal Design

The RMM features a minimum of fifteen independent (concurrently monitored), highly sensitive, user configurable input channels; delivering the industry’s best signal-to-noise ratio and allowing connection to any brand of PD sensor!

The RMM is more than just a Partial Discharge (PD) monitor. Inputs are available for six RTD winding temperatures, three load currents, three voltages and six user defined (4 – 20 mA) inputs. The RMM has the capability to perform motor current signature analysis for the detection of broken rotor bars in induction machines. The RMM will store up to two years of data using a first-in, first-out (FIFO) method.

The RMM is also available in an explosion proof enclosure.

Rotating Machine Monitor (RMM)

Use Data to Make Smart Decisions

See data displayed visually with our dashboard visualization software. The software allows users to configure the instrumentation, download and store data and use tools for data presentation and analysis. The software allows for the trending of all standard quantities of magnitudes, pulse counts, PD Intensity as well as operating dynamics. Multiple channels can be presented on the same screen for easy comparison and analysis.

Communications ports include Ethernet, USB and RS-485 with a standard communication protocol using ModBus. DNP-3 is available upon request. Dry relay contacts are also available to indicate monitor health and alarm conditions.

Rotating Machine Monitor (RMM)

Configure the instrument

Choose the model, probes and accessories. Incompatible combinations are blocked as you go; the remaining rules are checked when the instrument is added to the quote.

Documents

  • RTD-PD-Module

    RTD-PD Module

    Dynamic Ratings’ Resistive Temperature Detector Partial Discharge (RTD-PD) Module is specifically designed to detect partial discharge that occurs…

  • Coupling-Capacitor

    Coupling Capacitor

    The Coupling Capacitor is a highly sensitive partial discharge (PD) sensor used to decouple PD from the monitored conductor. Coupling Capacitors are…

  • GPCS

    Ground Path Current Sensor (GPCS)

    The Ground Path Current Sensor (GPCS) provides directionally sensitive partial discharge (PD) detection in electrical equipment. It is designed to…