Automatic Voltage Regulator AVR R120 for Leroy Somer Generator
R120 is used on the following Leroy Somer generators:
TAL040 B, TAL040 C, TAL040 C1, TAL040 D, TAL040 E, TAL040 F
TAL042 A, TAL042 B, TAL042 C, TAL042 D, TAL042 E, TAL042 F, TAL042 G, TAL042 H
TAL044 A, TAL044 B, TAL044 C, TAL044 D, TAL044 D1, TAL044 E, TAL044 H, TAL044 J, TAL044 K
THE SAME EXACT AVR AS:
Leroy Somer voltage regulator AEM230RE005
Leroy Somer voltage regulator 4969966
Specification:
Sensing input:
- Voltage: 277 VAC ± 10% for 1-phase,
415 VAC line to line ± 10% for 3-phase,
2-line sensing. AVR senses the true
the average of the line-to-line waveform. Using
resistor network (SMD) for trouble-free
sensing and control of sensed voltage/regulation.
Input power:
- Voltage: 277 VAC rms ± 10%
- Frequency: 50/60 Hz
Output:
- Voltage: 95 VDC for 240 VAC input
- Current:
4A DC
6 A for 30 sec. (when permitted by the field resistance)
Operating temperature: -20ºC to +70ºC
Storage temperature: -40ºC to +80ºC
Voltage setting: min ± 10% of rated voltage.
Stability setting: can be adjusted to obtain
a correct steady state transient response.
During frequency roll-off setting: available
below 46 Hz for 50 Hz and below 56 Hz for 60 Hz.
Voltage build-up: 2 volts (LN)
Voltage regulation: ± 1% at AVR
terminals with a THC <5%.
Thermal drift: ± 1% for 30ºC temperature change.
Response time: less than 50 ms.
Closed loop response: typically 0.5 seconds to recover 98% of the defined voltage for a field forcing ratio of 1:2.
Loss of sense protection: voltage
should disappear when the sensing circuit is open.
Overexcitation protection: 10 VDC to 85 VDC.
Setpoint: 60 VDC
Protection fuse: 4 A, 240 VAC.
Potentiometer seal: except for
V-trim potentiometer, all potentiometers are sealed.
Frequency settlement indicator: LED included (UF).
Loss of Sense Indicator: LED included (SL).
Overexcitation indicator: LED included (OE).
Protection of the devices: suitable RC
dampers to be provided for the device used
to protect against power surges.
Potting/Encapsulation details: the
components on the AVR should be
fully encapsulated with suitable PU
resin compound to absorb transients/
vibrations during operation.
Generator excitation details: (typical)
- Full load:
Excitation voltage: 40 to 50 V
Excitation current: 2.5 to 4.0 A
Spare part for Leroy Somer Generator.
Part/Replacement Number: AUTOMATIC, GENERATOR, GENERATORS, AEM230RE005, 4969966, SPECIFICATION, LINEAR, LINE-TO-LINE, PROBLEM FREE, CONTROL, REGULATION, FREQUENCY, OUTPUT, CURRENT, OPERATING TEMPERATURE, ADJUSTABLE, CORRECT, TRANSIENT RESPONSE, FREQUENCY RUN, TERMINALS, THERMAL, RESPONSE TIME, RESPONSE, TYPICAL, SECONDS, DEFINED, EXCEPTION, POTENTIOMETER, POTENTIOMETERS, INDICATOR, FREQUENCY RUN, UNITS, DEVICE, CAST, ENCLOSURE DETAILS, COMPONENTS, ENCLOSURED, ABSORB, TRANSIENTS, VIBRATIONS, GENERATOR'S, EXCITATION DETAILS.
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