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Stamford SA465 Voltage Regulator ( AVR) - ST E000-24650

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: 22 / 03 / 2019
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SA465 AUTOMATIC VOLTAGE REGULATOR ( AVR) SPECIFICATION, INSTALLATION AND ADJUSTMENTS General description Technical specification MX341, AS480, SX460, MX321, AS440, SX421, MA330, SA465, SX440 READY STOCK......! ! ! ! ! ! Our agents stamford * other type will be available on special request This NEW product, , NO SECOND...! ! ! ............. SPECIAL PRICE ! ! ............... SA465 is a half wave phase controlled thyristor type AVR and forms part of the excitation system for a brush-less generator. The design employs Surface Mount Technology ( SMT) for high integration of features in a small footprint AVR. Positive voltage build up from residual levels is ensured by the use of efficient semiconductors in the power circuitry of the AVR. Excitation power is derived directly from an auxiliary winding within the generator stator, providing sustained short circuit current. Alternatively, the unit can be powered from the main stator winding when short circuit performance is not required. 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 + / - 1.5% . In addition to being powered from the main stator, the AVR also derives 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 presettable 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, allowing the user fine control of the generator' s output. An analogue input is provided allowing connection to a Newage Power Factor controller or other external devices with compatible output. The AVR has the facility for droop CT connection, to allow parallel running with other similarly equipped generators. SENSING INPUT Voltage Jumper selectable 100-130V ac 1 phase or 190-264V ac 1 phase Frequency 50-60 Hz nominal POWER INPUT Voltage 100-264 V ac 1 phase Frequency 50-60 Hz nominal OUTPUT Voltage 85 V d.c. @ 207V a.c. Current continuous 4A transient 7.5A for 10 secs. Resistance 15 ohms min ( 10 ohms min when input volts is less than 175V ac) REGULATION + / - 1.5% ( see note 1) THERMAL DRIFT 0.04% per deg. C change in AVR ambient ( see note 2) TYPICAL SYSTEM RESPONSE AVR response 20 ms Filed current to 90% 80 ms Machine Volts to 97% 300 ms EXTERNAL VOLTAGE ADJUSTMENT + / -10% with 1 k ohm 1 watt trimmer ( see note 3) UNDER FREQUENCY PROTECTION Set point 95% Hz ( see note 4) Slope 170% down to 30 Hz UNIT POWER DISSIPATION 12 watts maximum BUILD UP VOLTAGE 4 Volts @ AVR terminals ANALOGUE INPUT Maximum input + / - 5V dc ( see note 5) Sensitivity 1v for 5% Generator Volts ( adjustable) Input resistance 1k ohm QUADRATURE DROOP INPUT 10 ohms burden Max. sensitivity: 0.07 A for 5% droop 0PF Max. input: 0.33 A ENVIRONMENTAL Vibration 20-100 Hz 50mm/ sec 100Hz – 2kHz 3.3g Operating temperature -40 to + 70° C Relative Humidity 0-70° C 95% ( see note 6) Storage temperature -55 to + 80° C NOTES 1. With 4% engine governing. 2. After 10 minutes. 3. Applies to Mod status F onwards. Generator de-rate may apply. Check with factory. 4. Factory set, semi-sealed, jumper selectable. 5. Any device connected to the analogue input must be fully floating ( galvanically isolated from ground) , with an insulation strength of 500V ac. 6. Non condensing * other type will be available on special request This NEW product, , NO SECOND...! ! ! ............. SPECIAL PRICE ! ! ...............
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stamford sa465 voltage regulator ( avr) - st e000-24650

Detail Stamford SA465 Voltage Regulator ( AVR) - ST E000-24650

SA465 AUTOMATIC VOLTAGE REGULATOR ( AVR) SPECIFICATION, INSTALLATION AND ADJUSTMENTS General description Technical specification MX341, AS480, SX460, MX321, AS440, SX421, MA330, SA465, SX440 READY STOCK......! ! ! ! ! ! Our agents stamford * other type will be available on special request This NEW product, , NO SECOND...! ! ! ............. SPECIAL PRICE ! ! ............... SA465 is a half wave phase controlled thyristor type AVR and forms part of the excitation system for a brush-less generator. The design employs Surface Mount Technology ( SMT) for high integration of features in a small footprint AVR. Positive voltage build up from residual levels is ensured by the use of efficient semiconductors in the power circuitry of the AVR. Excitation power is derived directly from an auxiliary winding within the generator stator, providing sustained short circuit current. Alternatively, the unit can be powered from the main stator winding when short circuit performance is not required. 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 + / - 1.5% . In addition to being powered from the main stator, the AVR also derives 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 presettable 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, allowing the user fine control of the generator' s output. An analogue input is provided allowing connection to a Newage Power Factor controller or other external devices with compatible output. The AVR has the facility for droop CT connection, to allow parallel running with other similarly equipped generators. SENSING INPUT Voltage Jumper selectable 100-130V ac 1 phase or 190-264V ac 1 phase Frequency 50-60 Hz nominal POWER INPUT Voltage 100-264 V ac 1 phase Frequency 50-60 Hz nominal OUTPUT Voltage 85 V d.c. @ 207V a.c. Current continuous 4A transient 7.5A for 10 secs. Resistance 15 ohms min ( 10 ohms min when input volts is less than 175V ac) REGULATION + / - 1.5% ( see note 1) THERMAL DRIFT 0.04% per deg. C change in AVR ambient ( see note 2) TYPICAL SYSTEM RESPONSE AVR response 20 ms Filed current to 90% 80 ms Machine Volts to 97% 300 ms EXTERNAL VOLTAGE ADJUSTMENT + / -10% with 1 k ohm 1 watt trimmer ( see note 3) UNDER FREQUENCY PROTECTION Set point 95% Hz ( see note 4) Slope 170% down to 30 Hz UNIT POWER DISSIPATION 12 watts maximum BUILD UP VOLTAGE 4 Volts @ AVR terminals ANALOGUE INPUT Maximum input + / - 5V dc ( see note 5) Sensitivity 1v for 5% Generator Volts ( adjustable) Input resistance 1k ohm QUADRATURE DROOP INPUT 10 ohms burden Max. sensitivity: 0.07 A for 5% droop 0PF Max. input: 0.33 A ENVIRONMENTAL Vibration 20-100 Hz 50mm/ sec 100Hz – 2kHz 3.3g Operating temperature -40 to + 70° C Relative Humidity 0-70° C 95% ( see note 6) Storage temperature -55 to + 80° C NOTES 1. With 4% engine governing. 2. After 10 minutes. 3. Applies to Mod status F onwards. Generator de-rate may apply. Check with factory. 4. Factory set, semi-sealed, jumper selectable. 5. Any device connected to the analogue input must be fully floating ( galvanically isolated from ground) , with an insulation strength of 500V ac. 6. Non condensing * other type will be available on special request This NEW product, , NO SECOND...! ! ! ............. SPECIAL PRICE ! ! ...............
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19 / 07 / 2019
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