R120 Automatic Voltage Regulator designed for reliable voltage control in brushless diesel generator systems, including Leroy Somer models.

Description

R120 Automatic Voltage Regulator AVR fits for Leroy Somer Generator Brushless Diesel Generator 

DESCRIPTION:Type: AVRPart Number：R120Condition: new,replacementManufacturer Warranty: 1 YearApplication:
The R120 is used on the following Leroy Somer Alternators:
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
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. The AVR senses the true
average of the line-to-line waveform. Use
the resistor (SMD) network for trouble-free
sensing and control of sensed voltage/ regulation.
Input power:
– Voltage: 277 VAC rms ± 10%
– Frequency: 50/60 Hz
Output power:
– Voltage: 95 VDC for 240 VAC Input
– Current:
4 A DC
6 A for 30 sec. (when allowed 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 transient response in steady state.
Under frequency roll-off setting: available
below 46 Hz for 50 Hz and below 56 Hz for 60 Hz.
Voltage build-up: 2 Volts (L-N)
Voltage regulation: ± 1% at the AVR
terminals with a THC <5%.
Thermal drift: ± 1% for 30ºC change in temperature.
Response time: less than 50 ms.
Closed loop response: typically 0.5 sec to recover 98% of the defined voltage for a field forcing ratio of 1:2.
Sensing loss protection: the voltage
should disappear when the sensing circuit is open.
Overexcitation protection: 10 VDC to 85 VDC.
Set point: 60 VDC
Protection fuse: 4 A, 240 VAC.
Potentiometer sealing: except for the
V-trim potentiometer, all potentiometers are sealed.
Frequency roll-off indicator: LED provided (UF).
Sensing loss indicator: LED provided (SL).
Overexcitation indicator: LED provided (OE).
Protection on the devices: suitable R-C
snubber to be provided for the device used
to protect against voltage surges.
Potting/Encapsulation details: the
components on the AVR should be
completely encapsulated with suitable PU
resin compound to absorb transients/
vibrations during operation.
Alternator excitation details: (typical)
– Full load:
Excitation voltage: 40 to 50 V
Excitation current: 2.5 to 4.0 A

Note:
1. Please make sure it will fit your machine before purchasing it. If you are not 100% sure this is what you need, please find out your engine model, series number and contact our Customer-service.
2. Please double check the part number of your item, matching information is for reference only.If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!
3. Communication is the best way to solve the problem. If you have any problems after you receive the package, please contact us in time, before opening a return or case.
4.For more information please contact us info@diselmart.com. We will reply you in 24 hours.

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