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Leroy Somer AVR R448 Automatic Voltage Regulators

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Leroy Somer AVR R448 Automatic Voltage Regulators

Price: $105.16
SKU: 67556
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Description

Leroy Somer AVR R448 Automatic Voltage Regulators


R448 AVR is used on LEROY SOMER LSA 46.2, LSA 47.2, LSA49.1 alternators with AREP or PMG excitation.

R448 Characteristics
- Shunt power supply: max 150V - 50/60 Hz
- Rated overload current: 10A - 10s
- Electronic protection: (in the event of overload, short-circuit, loss of voltage sensing)
this acts to restore the value of the excitation current to 1A after 10 s. The alternator must be stopped (or the power switched off) in order to reset the protection.
- Fuse: F1 on X1, X2.10A; slow - 250V
- Voltage sensing: 5 VA isolated via transformer
@ 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. ≥ 2.5VA cl1, secondary 1A (optional)
- Quadrature droop adjustment via potentiometer P1
- Max. excitation current adjustment via P5 4.5 to 10A (see below)
- 50/60 Hz selection via ST3 jumper
- ST11: Knee-point at 65 Hz for Tractelec application and variable speed.
- R448 for alternators LSA 42.2, 43.2, 44.2, 46.2,47.2, 49.1.
- R448 V50 for alternator LSA 50.2
- Compatible with the SHUNT, AREP or PMG excitation system

 

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