Gadget Zone

BCE0111

GadgetZone (US Seller) New Automatic Voltage Regulator Replacement AVR SX460 for Generator, 50-60HZ Nominal Frequency

EAN: 6955899007095

Voltage Regulators

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
In addition to regulating the generator voltage, the AVR circuitry includes under-speedand sensing loss protection features. Excitation power is derived directly from the generator terminals
Positive voltage build up from residual levels is ensured by the use of efficient semiconductors in the power circuitry of the AVR. The AVR is linked with the main stator windings and the exciter field windings to provide closed loop control of the output voltage with load regulation of +/- 1.0%
In addition to being powered from the main stator, the AVR also derivers a sample voltage from the output windings for voltage control purposes. In response to this sample voltage, the AVR controls the power fed to the exciter field and hence the main field to maintain the machine output voltage within the specified limits, compensating for load, speed, temperature and power factor of the generator
A frequency measuring circuit continually monitors the generator output and provides. Output under-speed protection of the excitation system, by reducing the output voltage proportionally with speed below a pre-settable threshold. A manual adjustment is provided for factory setting of the under frequency roll off point (UFRO). This can easily be changed to 50 or 60 Hz in the field by push-on link selection. Provision is made for the connection of a remote voltage trimmer

Specifications:

-INPUT:
*Voltage: Jumper selectable
*95-132V ac or 190-264V ac
*Frequency: 50-60HZ nominal
*Phase: 1

-OUTPUT:
*Voltage: max 90V dc at 207V ac input
*Current: continuous 4A dc Intermittent 6A for 10 secs
*Resistance: 15 ohms minimum

-REGULATION: +/-1%

-THERMAL DRIFT: 0.05% per deg.C change in AVR ambient

-TYPICAL SYSTEM RESPONSE:
*AVR response: 20ms
*Filed current to 90% 80ms
*Machine Volts to 97% 300ms

-EXTERNAL VOLTAGE ADJUSTMENT: +/-10% with 1k ohm 1 watt trimmer

-UNDER FREQUENCY PROTECTION:
*Set point: 95%HZ
*Slope: 170% down to 30HZ

-UNIT POWER DISSIPATION: 10 watts maximum

-BUILD UP VOLTAGE: 4 Volts @ AVR terminals

-Environmental:
*Vibration: 20-100HZ 50mm/sec
*100Hz 2kHz 3.3g
*Operating temperature: -40 to +70 C
*Relative Humidity 0-70C: 95%
*Storage temperature: -55 to +80 C

Package Included:

1 * AVR Sx460 Automatic Voltage Regulator
1 * user manual

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