The MX321TM analogue, 3-phase sensing, permanent magnet generator (PMG) powered automatic voltage regulator (AVR) provides isolation from the effects of non-linear loads, improved motor starting performance and sustained short circuit current.
Leroy Somer R449 can operate in shunt, AREP or PMG type applications. With its versatile functions the R449 is popular with LSA51.2, LSA53.1 & LSA54 Leroy Somer frames. The R449 has multiple features to enhance generator protections such as under frequency thresholds and voltage regulation with a ratio of -/+1%. For voltage matching and power factor controlling with the mains we recommend in addition to this regulator the R726
SX460 AVR – Automatic Voltage Regulator – Exact Generic Replacement
INPUT: Voltage: Jumper selectable 95-132V ac or 190-264V ac, Frequency: 50-60 Hz nominal, Phase: 1
OUTPUT: Voltage: Max 90V dc at 207V ac input, Current: Continuous 4 A dc, Intermittent 6 A for 10 secs, Resistance: 15 ohms minimum
Regulation: +/-1.0% * Thermal drift: 0.05% per deg. C change in AVR ambient
Unit power dissipation: 10 watts maximum – Build up voltage:4 Volts @ AVR terminals
MECC ALTE UVR6 AVR manufactured by Meccalte is a highly popular voltage regulator used on the larger Mecc Alte frames to provide optimum voltage regulation and sensing. The regulator can be used in 1 phase or 3 phase applications and 50 or 60 hz frequencies, installation is very simple but should only be installed by an experienced and certified generator technician.
The AS440 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.
SE350 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 under speed and sensing loss protection to ensure safe, reliable control of the generator. Positive voltage build up from residual levels is ensured by the use of proficient semiconductors in the power circuitry of the AVR.