Categories - Power System Protection and Control

  • GE Digital Energy SR Protection Relay Family
  • SR750/760 - Easy to use Feeder Protection System supported by industry leading suite of software tools. Suitable for Bus blocking/Interlocking schemes; High-speed fault detection for arc flash mitigation; Throw over schemes (bus transfer scheme applications); Load shedding schemes based on voltage and frequency elements; Auto-Recloser (760 Only)
  • SR469 - Protection and Management of three phase medium and large horsepower motors and driven equipment, including high inertia, two speed and reduced-voltage start motors. Voltage dependant overload curves; Torque metering and protection, broken rotor bar protection; Most advanced thermal model - Including multiple RTD inputs for stator thermal protection
  • SR745 - Primary and back-up protection and management of small, medium and larger power transformers, auto-transformers and reactors: Variable dual-slope percent differential protection, Magnetizing inrush and over-excitation blocking, ROCOF detection, Over-excitation   (V/Hz) Protection, Restricted Ground Fault Protection, Transformer overload protection
  • SR489 - Application for  Synchronous or induction generators operating at 25Hz, 50Hz or 60Hz; Primary or backup protection in cogeneration applications: Generator stator differential, Distance backup, Reverse power , Loss/Over excitation, Inadvertent energisation, Negative sequence overcurrent, Stator and bearing thermal monitoring 
  • Reduce troubleshooting time and maintenance costs -IRIG-B time synchronization, event reports, waveform capture, data logger
  • Draw-out construction allowing for minimized downtime and easy removal/installation
  • Multiple Networking interfaces - 10baseT Ethernet, RS485, RS232, RS422 (not 489); Multiple Protocols - Modbus RTU, Modbus TCP/IP, DNP 3.0 (not 469), DeviceNet (469 only)
  • Multiple Protocols - Modbus RTU, Modbus TCP/IP, DNP 3.0 (not 469), DeviceNet (469 only)
  • GE Digital Energy SR3 Protection Relay Family

  • SR339 - Complete protection, control, diagnostics and communications for small and medium sized AC motors.  Designed for medium voltage motors in industrial applications, the 339 delivers unparalleled protection, control, diagnostics and communications in an industry leading draw-out construction.  The 339 Motor Protection System provides simplified setup configuration through the use of the Motor Settings Auto-Configurator, advanced graphical diagnostics with the Motor Health Report and support for multiple communication protocols including IEC 61850. This 3 Series relay is available with draw out or non draw out options.
  • SR345 - Microprocessor based system for primary and backup protection of small and medium sized, 2-winding, distribution transformers .  The Multilin 345 offers advanced algorithms for magnitude and phase compensation.  The 345 includes advanced communications supporting simultaneous communications, enhanced draw-out construction and enhanced diagnostics for asset monitoring and simplified setup & configuration tools to reduce commissioning time.  This 3 Series relay is available with draw out or non draw out options.
  • SR350 - Innovative and intuitive multi functional feeder relay offering protection, control and monitoring in one integrated, economical and compact package.  Protection functions of this relay include over current and directional elements along with auto reclose and breaker failure.  This 3 Series relay is available with draw out or non draw out options.
  • GE Digital Energy MM200 Motor Protection Relays
Motor Protection Relay For Low Voltage Applications | CSE Uniserve
GE Multilin MM200 Motor Protection Relay


  • Flexible protection & amp; control: Motor Thermal Model; Undercurrent & amp; Current Unbalance; Acceleration Time; Sensitive Ground Fault; Built-in Starter Logic; FVNR, FVR, Two-Speed; Auto / Manual Control; Configurable Inputs; Power Fail Restart
  • Multiple Communication protocols - Modbus RTU, ODVA Compliant DeviceNet, Internally powered Profibus
  • Networking through RS485 Port
  • Integrated pushbuttons and LED indicators on the optional control panel, reduce external components and wiring
  • Application for low voltage three-phase motor; Applicationfor MCC and standalone Panel Mount
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Here at CSE Uniserve, we are specialist solutions engineers and technicians that supply high-quality industrial electrical control and protection products. We are known throughout industry as problem solvers and are proud to offer effective alternatives to mainstream brands. While established brands and products are a cornerstone of our industries we believe in offering our clients the opportunity to explore alternative technological solutions and do so with a guarantee of unparalleled service and support. Regardless of whether it is to do with motor overload protection, variable frequency drives, power quality analysis or slip energy recovery drives, we cover all bases.

High-end brand names that we supply include:

  • G&W
  • Solcon
  • Mirus
  • Janitza
  • Hyundai
  • Elspec
  • MiCOM
  • Seoho
  • Arcteq
  • Fuji
  • GE Multilin
  • MiDOS
  • Agile
  • RuggedCom

As such, our philosophy is find genuine solutions by exploiting the extensive knowledge and experience of our world-class engineers and technicians. The end goal is to unearth the means to exceed customer expectations that are in keeping with best practices.

Motor Protection Relay Uses

Where equipment malfunctions, experiences problems or begins to fault a protection relay can detect the problem early on and functions to significantly reduce any damage to the motor, or eliminate the possibility of it. When an electrical problem occurs the relay will operate to protect your critical infrastructure.

Problems can arise as a result of wear and tear and ageing but also from persistent overloading and a breakdown of insulation materials. While this is a gradual process that will not offer immediate signs, it will ultimately result in damage or an electrical fault. However, a motor protection relay can detect that something is going wrong even where the damage is slight. It achieves this by monitoring changes in voltage, current, resistance and temperature.

If things are left to escalate, overheating or overvoltage may result at which point the power will need to be interrupted. Protection relays serve in these instances by finding fault contributors. Traditional devices can only determine problems on a certain level, whereas protection relays can dig in deeper and prevent the problem from getting beyond the point of recovery and actually incurring damage.

Unrivalled Service and Support

And, in terms of our wide-ranging list of capabilities, the following should offer a clear insight into the extensive service available here at CSE Uniserve.

  • Secondary system design
  • Testing and Proving
  • Commissioning
  • Communications network engineering

Our market interests lie in all forms of mining, water, Utilities and renewables, heavy industry and manufacturing. We are dedicated to our customers and create long-lasting relationships built on best practices, innovative solutions and unrivalled support that is available 24 hours a day, 7 days a week.

We encourage you to get in touch with us at CSE Uniserve if you would like to explore solutions available that could streamline your operations and move your company forward in terms of its ability to meet the demands of its stakeholders.  We can help you create forward-thinking processes that will enable you continually strive for quality, sustainability and a safer environment for your employees.

CSE Uniserve is Australia's leading supplier of electrical equipment & engineering services. We design our technology to assist industries in delivering successful project outcomes, such as our slip energy recovery system & variable speed drives. Visit our website or contact us for more information.

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