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  2. Power Master SX460 Generic Replacement for Cummins SX460 Automatic Voltage Regulator

Power Master SX460 Generic Replacement for Cummins SX460 Automatic Voltage Regulator

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SX460 Automatic Voltage Regulator. Jumper selectable 95-132V ac or 190-264V ac, Frequency: 50-60 Hz nominal, Phase: 1

$ 25.09 25.09 USD $ 25.09

$ 25.09

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INPUT

Jumper selectable 

95-132V A or 190-264V AC


 

OUTPUT
Max 90V dc at 207V AC input
WEIGHT

0.7 POUNDS

SIZE

  7 X 5 X 3 Inches 

REGULATION

  +/- 1.0%


SX460 is a half-wave phase-controlled thyristor type Automatic Voltage Regulator (AVR) and forms part of the excitation system for a brush-less generator.

UNDER FREQUENCY PROTECTION 

10 watts maximum 

THERMAL DRIFT

0.05% per deg. C change in AVR ambient 

UNIT POWER DISSIPATION 

+/- 1.0%

  • Input - ◖Voltage: Jumper selectable 95-132V ac or 190-264V ac ◖ Frequency: 50-60 Hz nominal ◖Phase: 1
  • Output - ◖Voltage: max 90V dc at 207V ac input ◖Current: continuous 4A dc / lntermittent 6A for 10 secs ◖Resistance: 15 ohms mínimum
  • Regulation - +/- 1.0%
  • Thermal Drift - 0.05% per deg. C change in AVR ambient
  • Typical System Response - ◖AVR response 20ms / Filed current to 90% / Machine Volts to 97%


  • External Voltage Adjustment - +/-10%with 1k ohm 1 watt trimmer
  • Under Frequency Protection - Set point 95% Hz / Slope 170% down to 30H z
  • Unit Power Dissipation - 10 watts maximum
  • Build up voltage - 4 Volts @ AVR terminals
  • Evironmental - ◖Vibration: 20-100 Hz-50mm/sec / 100Hz- 2kHz / 3.3g ◖Operating temperatura: -40 to +70 ◖Relative Humidity 0-70: 95% ◖Storage temperature: -55 to +80



  • Before running generator, turn the VOLTS control fully anti-clockwise.
  • Turn remote volts trimmier (if fitted) to midway position.
  • Turn STABILITY control to midway position.
  • Connect a suitable voltmeter (0-300V ac) across line to neutral of the generator.
  • Start generator set, and run on no load at nominal frequency e.g. 50-53/z or 60-63Hz
  • If the red Light Emitting Diode (LED) is illuminated, refer to the Under Frequency Roll Off (UFRO) adjustment.
  • Carefully turn VOLTS control clockwise until rated voltage is reached
  • 1f instability is present at rated vo Itage, refer to stability adjustment, then re-adjust voltage if necessary.
  • Voltage adjustment is now completed

Stability Adjustment

The AVR includes a stability or damping circuit to provide good steady state and transient performance of the generator

Droop Adjustment

The UFRO adjustment is preset and sealed and only requires the selection of 50 / 60Hz using the jumper link.  

Trim Adjustment

The AVR incorporates an underspeed protection circuit which gives a volts/Hz characteristic when the generator speed falls below a presettable threshold known as the "knee" point.  


The correct setting can be found by running the generator at no load and slowly turning the stability control anti-clockwise until the generator voltage starts to become unstable.

SX460 is a half-wave phase-controlled thyristor type Automatic Voltage Regulator (AVR) and forms part of the excitation system for a brush-less generator.