Stamford AVR AS480:
1.AS480 description:
AS480 is a half wave phase controlled AVR which forms part of the excitation structure of the brushless generator.
2.AS480 Characteristics
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Technical specification
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Sensing and power input
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voltage
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100-264 Vac 1 phase
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frequency
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50-60 Hz nominal
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output
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voltage
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82 V d.c. @ 200 V a.c.
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45 V d.c. @ 110 V a.c.
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Current
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Continuous 5 A dc. transient 7.5A for 10 secs.
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resistance
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15 ohms min
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regulation
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+/- 1.0%
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Thermal drift
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0.03% per deg. C change in AVR ambient
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Typical system response
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AVR response
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20 ms
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Filed current to 90%
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80 ms
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Machine volts to 97%
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300ms
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External voltage adjustment
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+/- 10% with 1 k ohm 1 watt trimmer
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Under frequency protection
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Set point
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95% Hz(see note 4)
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Unit power dissipation
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12 watts maximum
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QUADRATURE DROOP INPUT
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Max. sensitivity
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0.07 A for 5% droop 0PF
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Max. input
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0.33 A
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OVER EXCITATION PROTECTION
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Set point
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67 V dc +/-3%
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Time delay
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10-15 seconds (fixed)
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Build up voltage
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4 volts @ AVR terminals
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3.We still supply AVR:
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STAMFORD AVR
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LEROY SOMER
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General AVR
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Basler series
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MeccAlte series
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Marelli series
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Marathon series
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AS440
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R230
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GAVR-8A
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EA04C
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EA06A/UVR6
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M40FA640
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SE350
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SX440
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R250
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GAVR-12A
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EA05A
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SR7/2
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M16FA655A
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SX460
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R438
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GAVR-15A
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EA08A
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MX341
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R448
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50A-board
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EA15A
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MX321
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R449
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EA350
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AS480
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R450
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EA440-T
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