AVR R448 | Generic replacement
- Exact Generic Replacement for R448 | 1 Year Warranty!
- Normal AVR supply power: 2 auxiliary windings (X1, X2, ans Z, Z2)
- Shunt supply: 150V – 5060Hz Rated overload current:10A, 10s.
- Electronic built- in )overload, short circuit, and loss of sensing) protecting: If excitation current raises over 10 amps for more then 10 seconds, excitation current will drop automatically to about 1A.
- To reset AVR protection, the generator must be stopped )or by cutting supply voltage to the AVR). Protection of power inputs by fuses F1
- Voltage sensing: 5VA insulated transformer with input voltage taps at: Terminals 0 – 110V = 95 to 140V. Terminals 0 – 220V = 170 to 260V. Terminals 0 – 380V = 340 to 520V
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$75.50
The R448 is a generic replacement Automatic Voltage Regulator (AVR) for Leroy Somer brushless generators, compatible with AREP or PMG excitation systems. Voltage sensing is available at three selectable ranges via terminal taps: 95–140V (terminals 0-110V), 170–260V (terminals 0-220V), or 340–520V (terminals 0-380V), all at 50/60 Hz. Shunt supply is 150V at 50/60 Hz.
The R448 delivers an output of 82V DC at 200V AC input. Voltage regulation accuracy is ±0.5%. Short circuit capability is 3× rated current for 10 seconds (with AREP or PMG excitation). Rated overload current is 10A for 10 seconds. Built-in electronic protection covers overload, short circuit, and loss of sensing — if excitation current exceeds 10A for more than 10 seconds, it drops automatically to approximately 1A.
Response time is 1 second (normal) or 0.3 seconds (rapid) for a ±20% voltage variation. Remote voltage adjustment range is ±5%. Excitation over-current adjustment (P5) is 4.5 to 10A. Frequency selection (50/60 Hz) is made via jumper ST3. Contact capacity is 10A at 250V AC.
Additional information
| Weight | 2.87 oz |
|---|---|
| Dimensions | 12 × 9 × 4 in |
| BRANDS | Power Master Inc. |
