AVR AS440 Brushless Automatic Voltage Regulator

///AVR AS440 Brushless Automatic Voltage Regulator
AVR AS440 Brushless Automatic Voltage Regulator 2017-09-15T03:34:44+00:00

Project Description

AS440 is a half wave phase controlled thyristor type AVR and forms part of the excitation system for a brushless generator. The design employs Surface Mount Technology (SMT) for high integration of features in a small footprint AVR.

AS440 Technical specification

Technical specification

Sensing input

voltage

Jumper selectable.100-130 Vac 1 phase or 190-264 Vac 1 phase

frequency

50-60 Hz nominal

Power input

Voltage

100-264 V ac 1 phase

frequency

100-120 Hz nominal

output

voltage

82 V d.c. @ 200 V a.c.

Current

Continuous 4 A dc. transient 7.5A for 10 secs.

resistance

15 ohms min

regulation

+/- 1.0% (see note 1)

Thermal drift

0.03% per deg. C change in AVR ambient

Typical system response

AVR response

20 ms

Filed current to 90%

80 ms

Machine volts to 97%

300ms

External voltage adjustment

+/- 10% with 1 k ohm 1 watt trimmer

Under frequency protection

Set point

95% Hz(see note 4)

Unit power dissipation

12 watts maximum

ANALOGUE INPUT

 

Maximum input

+/- 5V dc

Sensitivity

1v for 5% Generator Volts (adjustable)

Input resistance

1k ohm 

QUADRATURE DROOP INPUT

Max. sensitivity

0.07 A for 5% droop 0PF

Max. input

0.33 A

OVER EXCITATION PROTECTION

Set point

65 V dc

Time delay

10-15 seconds (fixed)

Build up voltage

4 volts @ AVR terminals

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