The SX460 is a half-wave phase-controlled thyristor type Automatic Voltage Regulator and forms part of the excitation system for a brushless generator. In addition to regulating the generator voltage, the AVR circuitry includes underspeed and sensing loss protection to ensure safe, reliable control of the generator. This model supercedes the Series 6 range.
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Stamford AVR SX460 | Original
Features include:
- Stability adjustment
- Under frequency roll off adjustment
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Related products
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AVR | Generic Replacements
AVR R438 | Generic
- Voltage regulation ±0.5%
- Short circuit capability: 3 x Irated for 10 seconds ( AREP or PMG excitation)
- Voltage sensing: 95 to 140 volts (50/60 Hz) or 170 to 260 volts (50/60 Hz) or 340 to 520 volts (50/60 Hz)
- Response time: Normal (1sec) for _+20% voltage variation or rapid (0.3 sec) for ∼+20% voltage variation.
- Remote voltage adjustment range of: _+5% *1000 Series alternators do not have PMG option.
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SKU: R438G -
AVR | Generic Replacements
AVR SX440 | Generic Replacement AS440
INPUT
Voltage: 190 – 264V ac
Frequency: 50-60 Hz nominal. Phase:1 Wire: 2
OUTPUT
Voltage: max 90V dc at 207 V ac input
Current: continuous 4A dc
Intermittent 6A for 10 secs
Resistance: 15 ohms minimum
REGULATION: +/- 1%
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SKU: Sx440G -
AVR | Generic Replacements
AVR R230 | Generic Replacement R250
- Voltage regulation: around ± 0.5%.
- Voltage supply/sensing range 85 to 139 V (50/60 Hz)
- Rapid response time (500 ms) for a transient voltage variation amplitude of ± 20% – Voltage setting P1
Stability setting P2. - Power supply protected by 8 A fuse, slow- blow action (tolerates 10 A for 10 s)
- Frequency: 50 Hz with ST3 jumper
- 60 Hz without ST3 jumper
- Factory-set underspeed protection P3. 2.2
- R230 AVR option
- Potentiometer for remote voltage adjustment, 1000 Ω / 0.5 W min: adjustment range ± 5%. – Remove the ST4 jumper.
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SKU: R230G -
Leroy Somer AVR
Leroy Somer AVR R449 | Original
The regulator includes:
- A main terminal strip (10 terminals)
- A secondary terminal block (5 terminals)
- A frequency selection terminal block (3 terminals) – A quadrature droop potentiometer
- A voltage potentiometer
- A stability potentiometer
- A maximum excitation potentiometer
- A sensing selection jumper ST1 (single/3-phase with an external module)
- A response time jumper ST2 – A frequency selection jumper ST3 – An external voltage setting jumper ST4 – A LAM (load adjustment module) jumper ST5
- From R449 Version E number 10,000, this jumper will be removable.
- A selecti
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SKU: R449
