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CET 5 - Motor Protection Relay

CET 5 - Motor Protection Relay

CET5D240V
$5,623.25 AUD (ex GST)
In stock
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* Pricing and stock availability is subject to change. If stock is unavailable, appropriate lead times may apply.

The CET 5, featuring innovative SuperVision functionality, provides:

- an advanced motor protection solution with motor control,

- power monitoring and  communication capabilities.

- The accurate thermal modelling of CET 5 results in maximum motor output without risk to the installation and suits low and medium voltage motors.

- Ideal for critical drives, CET 5 provides several option cards to fulfil the requirements of most applications including:

    > Voltage cards for power monitoring,
    > Modbus,
   > DeviceNet,
   > Remote I/O cards for communications and an RTD scanner module for the temperature monitoring of up to 12 RTDs.

CET 5 Features

  • Motor protection set up from motor nameplate data 
  • Motor rated current
  • Locked rotor current
  • "Hot" locked rotor time (multiply cold locked rotor time by 0.833 if not known)
  • Service factor
  • Current setting up to 5000 amps
  • Multi-range control supply voltage 110-240 V AC/DC
  • Easy navigation menu structure
  • IP65 housing
  • Built-in keypad
  • 2-line backlit LCD display
  • RS232 port (null modem connection to PC)
  • Two(2) configurable inputs expandable up to five(5) with I/O expansion module
  • Two(2) configurable relay outputs expandable up to six(6) with I/O expansion module
  • Changeover trip output relay
  • PTC thermistor input Core balance transformer input connection for earth leakage
  • Fibre optic port for RTD scanner module connection

Features | Benefits

Comprehensive motor protection  |  to ensure maximum motor output

Utilises existing CWE 4 current converters  |  for convenient retrofitting

Wide supply voltage range 110 to 240 V AC/DC  |  providing greater application flexibility

Compact construction with plug-in option card system  |  for simple installation

Adjustable alarm levels  |  to allow preventative maintenance and reduce downtime

Event monitoring with real time clock  |  records motor performance history

Power metering  |  to monitor motor performance and negate the need for other metering devices

Suitable for low and medium voltage applications  |  to suit a wide range of applications

Motor diagnostics  |  to monitor motor and process performance

PTC thermistor protection  |  used for detecting over temperature conditions caused by external influences i.e. blocked cooling fan or high ambient temperatures

Earth leakage protection  |  to provide increased protection for equipment and personnel

RTD scanner module for up to 12 RTD probes  |  especially useful for medium and high voltage motors where motor windings and bearings arerequired to be monitored. Actual motor temperatures can be displayed with the RTD module installed

IP 65 rated  |  to suit most environments

Maximum protection for maximum productivity  |  Accurate thermal models allow increased production by avoiding premature tripping

Universal acceptance  |  global approvals: UL Listed, CSA Certified, CR & C-tick

Password protected to enable / disable  |  offering plant and personnel security

Windows Hyperterminal™, compatible  |  to conveniently integrate into existing communications systems Modbus RTU and DeviceNet

CET 5 Accessories

Pluggable option cards and additional modules allow future expansion to be accommodated within the main unit. Additional I/O capacity, communication cards (network control and monitoring) and voltage input cards can easily be added to provide features matched to the application requirements.

  • Devicenet / Modbus Communication cards
  • IO Expansion Card
  • RTD Scanner
  • Voltage Option Card

CET 5 Standard Protection

The CET 5 offers comprehensive motor protection on the base unit and provides the following features to ensure minimum downtime due to motor operational failure:

  • Thermal Overload
  • PTC Thermistor Protection
  • Undercurrent (Underload)
  • Current imbalance/Phase Loss
  • Overcurrent (Mechanical Jam)
  • Short Circuit
  • Residual Ground Fault (Holmgreen)
  • Core Balance Ground Fault (Earth Leakage)
  • Protection Inhibit During Starting
  • Start Motor Timer
  • Notching or Jogging
  • Thermal Capacity Utilisation Start Inhibit
  • Anti-Backspin Timer
  • Emergency Start
  • Two Speed Protection
  • Reduced Voltage Starting
  • Stall Speed Switch
  • Over- and Under- Frequency

CET 5 Communication

CET 5 provides several options for communication other than the front panel display. Networking of motor drives is a popular method for controlling and monitoring motors. CET 5 supports the most common industrial protocols:

  • DeviceNet
  • Modbus RTU compatibility
  • Windows ® HyperTerminal™
  • ASC II based software

CET 5 Event Recording

Date and time stamping trip history with current (and voltage if option card fitted) magnitudes.

Serialised Events Recording via ASCII RS232 port.

  • Motor Running Time
  • Start Cycles
  • Emergency Starts

CET 5 Metering

 

  • Current Magnitudes and Phase Angles
  • Ground Fault Current Magnitudes and Angles
  • Average Current
  • Motor Load
  • Current Imbalance
  • Frequency
  • Thermal Capacity Utilised
  • RTD Temperatures (requires CR12D module)  
  • Time to Trip
  • Time to Reset
  • Voltage (requires CVS5 card) Power and Power
  • Factor (requires CVS5 card)
  • Hours Run
  • Analog Output - Load Current, Ave. Current, Max Current, TCU, RTD temperature, Power or Power Factor
  • Configurable Rotating display

CET 5 Optional Protection

The range of motor protection features can be expanded through the use of option cards to provide even more complete protection.

With CVS 5 Voltage Option Card :

  • Undervoltage
  • Overvoltage
  • Underpower
  • Reactive Power
  • Power Factor
  • Voltage Frequency

With CR12D RTD Scanner Module:
The CR12DRTD scanner module facilitates the monitoring of up to 12RTDs. Trip and warning levels can be set for each RTD temperature. This is  particularly useful for medium and high voltage applications.

CET 5 Common Applications

 

  • Conveyors
  • Blowers
  • Band Saws
  • Pumps
  • Compressors
  • Chillers
  • Mixers
  • Fans
  • Centrifuges
  • Cutting/Drilling Machines
  • Crushers
  • Grinders

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  • Peter Van, 11 January 2012

    This really is awesome, we have 1 in each location at work at the moment.

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