Uncategorized
Stamford AVR AS440 | Original
Features include:
- Stability adjustment
- Optimum response selection
- Under frequency roll off adjustment
- Droop adjustment
- Trim adjustment
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The AS440 ( + Kit replaces SX440 ; SA465) 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.
Related products
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AVR | Generic Replacements
AVR MX341 | Generic
- SENSING INPUT
Voltage: 190- 264V ac max, 1 phase, 2 wire
Frequency : 50 – 60 Hz nominal
POWER INPUT (PMG)
Voltage 140-220V ac max, 3 phase, 3 wire
Current: 3A/phase
Frequency: 100 120 Hz nominal
OUTPUT
Voltage: max 120V dc
Current: continuous 2.7 A
Intermittent 6a for 10 secs.
Resistance: 15 ohms minimum
REGULATION: +/- 1%
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SKU: MX341G - SENSING INPUT
-
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 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 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
