General Electric Series MTO - Thermal overload relays

GE

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Ordering numbers

Datasheets

Thermal overload relays for M Series contactors from 0.11 to 14A, features and benefits:

  • Control circuit up to 690V
  • Power circuit up to 690V
  • Three-pole differential (phase unbalance protection)
  • Automatic ambient temperature compensation between –25°C and +60°C
  • Choice of manual or automatic reset
  • Direct connection to contactor or independent mounting using accessories
  • Screw and Ring terminal versions
  • Terminals protected against accidental contact in accordance with VDE 0106 T.100 and VBG4
  • Terminal numbering in accordance with EN?50005
  • Degree of protection IP20 (EN 60529)
  • Additional auxiliary contact block 1NO (with manual reset only)

Characteristics:

  • Thermal protection against balanced overload
  • Three-pole differential (phase unbalance protection)
  • Automatic ambient temperature compensation
  • Front mounted selector for choosing utilisation current
  • Reset button, 2 positions: Manual(H) and Automatic(A) by turning the blue selector
  • Stop push-button, independent of reset (red)
  • Manual trip lever (tripping test)
  • Tripping indicator (0-1)
  • To facilitate wiring arrangements terminal 96 fits directly onto coil terminal (A2) and terminal 14/22 fits directly onto the feedback auxiliary contact

General Electric Thermal overload relays

GE

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Ordering numbers

Datasheets

Thermal overload relays for contactors series CL and CK from 0.16 to 850A, features and benefits:

  • Control circuit up to 690V AC
  • Power circuit: RT1, RT12: up to 690V, RT2, RT22, RT3, RT32, RT4/4L, RT5/5L & RT6/6L: up to 1000V
  • Thermal protection against normal overloads
  • Three pole differential (phase unbalance protection)
  • Protection against long starting times
  • Automatic ambient temperature compensation between -25?C + 60?C
  • Front mounted test button
  • Trip indication
  • Independent auxiliary contacts with double rupture (1NO + 1NC)
  • Function selector: Manual RESET, Manual RESET and STOP, Automatic RESET with STOP, Automatic RESET without STOP

General Electric Series RE - Electronic overload relay

GE

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Ordering numbers

Datasheets

Electronic overload relays have been designed primarily to protect electric motors and associated electrical circuits.

These devices operate on the principle of monitoring the current in a motor starter circuit which, when the current exceeds a pre set condition, or there is a loss of current in any phase, the device will initiate a trip circuit which in turn causes the power to the starter (contactor) to be disconnected thus making the circuit safe.

Features:

  • Low power consumption
  • Great accuracy
  • Full reliability
  • Phase unbalance protection
  • Interchangeable with thermal overload relay
  • Multiple trip class selection
  • Manual / Auto reset

Main characteristics:

  • Setting range from 0.1 up to 150A
  • Self powered
  • Thermal memory
  • Phase loss protection
  • Phase unbalance protection
  • Direct fitting to contactors Series CL
  • Interchangeable with thermal overload relay
  • Multiple ttrip class selection
  • Manual / Auto reset
  • Increased flexibility, less order codes, less stock
  • Tripp class: 5 - 10 - 20 - 30

General Electric Entellipro: Intelligent motor management relay ES3 / ES5

GE

PDF catalogues:

Broshure

Ordering numbers

Manual

Motor protection and motor control with pre-programmed motor typicals. Status/Maintenance/Management information through communications.

In addition the system offers the possibility to obtain a readout of the status of the motors and gear apparatus as well as maintenance information. In addition it offers the user user-friendly options to manage settings and configurations.

New features of the system:

  • Communications redundancy due to availability of the Modbus RTU and Profibus DP communications lines
  • User-friendly touchscreen windows offer motor control directly from the panel or combined operation of up to 32 motors by means of a clear colour touchscreen
  • Predefined control logic with which the desired drive configuration can be selected easily and quickly
  • A logbook of analogue values and events with real-time timestamps
  • 24V DC or 100 to 240 V AC power supply

The system is ATEX and SIL-certified, which makes it possible to be utilised in the most demanding environments, such as petrochemical installations, oil rigs and power plants.

Motor management system for protection and diagnostics

  • ES3: I/O 7 digital inputs, 3 digital outputs
  • ES5: I/O 16 digital inputs, 8 digital outputs, 4-20mA output

System functionality

  • Motor protection
  • Motor control
  • Interface with process control and SCADA system
  • Status information from motors and switchgear
  • Maintenance information
  • Management of settings and configuration

New features

  • Predefined control logic
  • Communication redundancy
  • SIL certified
  • Analogue value logging
  • Event logging with time stamp
  • Configurable Profibus-DP data block
  • 110 to 240 V AC supply voltage
  • Demonstration kit

Motor drive applications

  • Drive typicals
  • Direct-on-line (DOL)
  • Reverse
  • Star delta
  • Star delta reverse
  • Softstarter
  • Softstarter reverse
  • Breaker control
  • Dahlander
  • Pole changing starter
  • Solenoid valve
  • Actuator

Typical control logic

  • The control logic coordinates the commands from four different control units