Multi-function relay, power controller, cos-phi controller, synchronizing unit

The multi-function relay has been designed for the control, protection and monitoring of generators. The settings and parameters may be set using a membrane keyboard on the front panel or with a PC. Remote control via interface and discrete/analog inputs for adjusting speed, frequency, voltage, power, reactive power, and power factor set points. This unit complies with all currently applicable guidelines.

Control functions:

• Automatic synchronisation
• Automatic power control
• Automatic power factor control
• Automatic voltage control
• Automatic frequency control
• Automatic active and reactive power distribution
• Operating data acquisition

Protective and monitoring functions:

• Generator: voltage/frequency (ANSI 59 / 27 / 81O / 81U)
• Generator: overload, reverse/reduced power (ANSI 32 / 32R / 32F)
• Generator: unbalanced load (ANSI 46)
• Generator: instantaneous overcurrent (ANSI 50)
• Generator: time-overcurrent (ANSI 51)
• Generator: ground fault (ANSI 50G)
• Generator: power factor (ANSI 55)
• Generator: rotation field
• Generator set: speed/frequency mismatch
• Grid: voltage/frequency/phase shift/ROCOF (ANSI 59/27/81O/81U/78)
• Grid: rotation field

Technical data:

• Measuring voltage: 380...440 V/AC
• Measuring frequency: 40....85 Hz
• Measuring current: 2.5 A
• Outputs: Relay manager with 3 floating relays
  Synchronising output LS-on
  Synchronising output LS-off
• Inputs: Circuit-breaker (LS) acknowledgment signaling
• Displays: 2 LED – Alarm, Stop
  red lamp – Circuit-breaker (LS) on
  128×64 dot graphical interactive LC display with soft keys
• Interface: USB
• Motor protection switch, 1 - 1.6A  
• Measuring inputs: 4-mm safety sockets
• Dimensions: 297 x 456 x 200 mm (HxWxD)
• Weight: 2.7 kg