Motor Management Relay block SR469

Type : SR469

Features and technical specifications:

1. Drawout case (for ease of maintenance/testing)
2. Reduced voltage starting control for single transition
3. Trip coil supervision
4. Flash memory for easy firmware updates
5. RS485 Communication Port                                                                                                                                             METERING:                                                                                                                                                                          1.  Voltage
   2. Current and amps demand
   3. Real power, kW demand, kW power consumption
   4. Apparent power and kVA demand
   5. Reactive power, kvar demand, kvar consumption/generation
   6. Frequency
   7. Power factor
   8. RTD
   9. Speed in RPM with a key phasor input
   10. User-programmable analog inputs.                                                                                                                       This Motor Management Relay block is easily insert in your schematic diagram and connect as you like way.                                                                                                                                                                                                     The 469 is equipped with six (6) output relays for trips, alarms, and start blocks. Motor protection, fault diagnostics, power metering, and RTU functions are integrated into one economical drawout package.   Typical applications include: pumps, fans, compressors, mills, shredders, extruders, debarkers, refiners, cranes, conveyors, chillers, crushers, and blowers. Some of the protection highlights are detailed here; a complete list is shown below. Four assignable digital inputs may be configured for a number of different features including tachometer or generic trip and alarm with a programmable name. The thermal model incorporates unbalance biasing, RTD feedback, and exponential cooling. In addition to the 15 standard overload curves, there is a custom curve feature and a curve specifically designed for the starting of high inertia loads, when the acceleration time exceeds the safe stall time. A second overload curve is provided for two-speed motors. Ground faults or earth leakage as low as 0.25 A may be detected using the GE Digital Energy 50:0.025 Ground CT. CT inputs for phase differential protection are also provided. The 12 RTD inputs provided may be individually field programmed for different RTD types. Voltage transformer inputs allow for numerous protection features based on voltage and power quantities. Four 4 to 20 mA analog inputs may be used for tripping and alarming on any transducer input such as vibration, pressure, flow, etc. All 469 features are standard; there are no options. The phase CT secondaries, control power, and analog output range must be specified at the time of order. The 469 differential CT inputs are field programmable for CTs with 1 A or 5 A secondaries. There are two ground CT inputs, one for the GE Digital Energy 50:0.025 core balance CT and one for a ground CT with a 1 A or 5 A secondary, also field programmable. The VT inputs will accommodate VTs in either a delta or wye configuration. The output relays are always non-failsafe with the exception of the service relay. The EnerVista 469 Setup software is provided with each unit. A metal demo case may be ordered for demonstration or testing purposes.