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AVR STAMFORD AS440 AS-440 AS 440 STAMFORD E000-24403 E00024403 E000 24403 - ORIGINAL GENUINE ASLI
AVR STAMFORD AS440 AS-440 AS 440 STAMFORD E000-24403 E00024403 E000 24403 - ORIGINAL GENUINE ASLI
AVR STAMFORD AS440 AS-440 AS 440 STAMFORD E000-24403 E00024403 E000 24403 - ORIGINAL GENUINE ASLI
AVR STAMFORD AS440 AS-440 AS 440 STAMFORD E000-24403 E00024403 E000 24403 - ORIGINAL GENUINE ASLI
AVR STAMFORD AS440 AS-440 AS 440 STAMFORD E000-24403 E00024403 E000 24403 - ORIGINAL GENUINE ASLI
AVR STAMFORD AS440 AS-440 AS 440 STAMFORD E000-24403 E00024403 E000 24403 - ORIGINAL GENUINE ASLI
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Last Updated
04 Sep 2020
Country Origin
United Kingdom
Minimum Order
1 Set

Specification of

AVR STAMFORD AS440 AS-440 AS 440 STAMFORD E000-24403 E00024403 E000 24403 - ORIGINAL GENUINE ASLI
 
Description:
Stamford AVR AS440 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.
 
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 50-60 Hz nominal 
 
OUTPUT 
Voltage 82 V d. C. @ 200 V a. C. 
Current continuous 4A (see note 1). 
Transient 7.5A for 10 secs. 
Resistance 15 ohms min 
(10 ohms min when input volts is less than 175 ac) 
REGULATION 
+/- 1.0% (see note 2) 
THERMAL DRIFT 
0.03% per deg. C change in AVR ambient (see note 3) 
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 4) 
Increasing resistance lowers voltage. 
UNDER FREQUENCY PROTECTION 
Set point: 94 -98% Hz (see note 5) 
UNIT POWER DISSIPATION 
12 watts maximum 
BUILD UP VOLTAGE 
4 Volts @ AVR terminals

ANALOGUE INPUT 
Maximum input: +/- 5 Vdc (see note 6) 
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

OVER EXCITATION PROTECTION 
Set point 75 V dc 
Time delay 10-15 seconds (fixed) 
ENVIRONMENTAL 
Vibration: 20-100 Hz 50mm/sec 
100Hz -2kHz 3.3g 
Operating temperature: -40 to +70 C (note 7) 
Relative Humidity: 0-70 C 95% (note 8) 
Storage temperature: -55 to +80 C

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