Stamford AVR SX460 | Original
Features include:
- Stability adjustment
- Under frequency roll off adjustment
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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.
Related products
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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 -
AVR | Generic Replacements
AVR SX460 | Generic
Sensing Input
Voltage: 95 – 132 VAC or 190 – 264 VAC
1 phase, jumper selectable. Frequency 50/60 Hz, selectable
Output
Voltage: Max. 90 VDC @ 207 VAC
Current: Continuous 4A
Intermittent 10A for sec
Resistance: Min. 15 ohm
Voltage Regulation:< ± 1.5 % ( with 4% engine governing)
Voltage Build-Up: Residual voltage at AVR terminal > 5 VAC
Thermal Drift: 0.05% peer C change in AVR ambient.
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SKU: SX460G -
Leroy Somer AVR
Leroy Somer AVR R438 | Original
Fuse: F1on X1,X2.10A;slow-250V
- Voltage sensing : 5 VA isolated via trans- former • 0-110 V terminals = 95 to 140 V • 0-220 V terminals = 170 to 260 V • 0-380 V terminals = 340 to 520 V for other voltages, a transformer should be used.
- Voltage regulation ± 0.5%
- Normal or rapid response time via jumper ST2 (see below)
- Voltage adjustment via potentiometer P2 or apply a DC voltage of ± 1 V on the terminals of the external potentiometer
- Current sensing: (parallel operation): input S1, S2 intended for 1 C.T. Š 2.5 VA cl1, secondary 1A (optional)
- Quadrature droop adjustment via potentio- meter P1
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SKU: R438 -
Leroy Somer AVR
Leroy Somer AVR R450 | Original
The R450 AVR is supplied in a casing designed to be mounted on a panel with dampers.
- Operating temperature: – 30°C to + 65° C. – Storage temperature: – 55°C to + 85°C.
- Shocks on the base: 9 g depending on the 3 axes.
- Vibrations: less than 10 Hz, 2 mm half-peak amplitude 10 Hz to 100 Hz: 100 mm/s, above 100 Hz: 8 g.
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SKU: R450
