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AVR R120 Automatic Voltage Regulator For Generator of Leroy Somer

Leroy Somer

Key Features

  • The R120 AVR Automatic Voltage Regulator is an product used in LS Alternators
  • The R120 AVR is used on the following Alternators: TAL040 B, TAL040 C, TAL040 C1, TAL040 D, TAL040 E, TAL040 F
  • The R120 AVR is used on the following Alternators: TAL042 A, TAL042 B, TAL042 C, TAL042 D, TAL042 E, TAL042 F, TAL042 G, TAL042 H
  • The R120 AVR is used on the following Alternators: TAL044 A, TAL044 B, TAL044 C, TAL044 D, TAL044 D1, TAL044 E, TAL044 H, TAL044 J, TAL044 K
  • SAME EXACT AVR AS: ·Voltage Regulator AEM230RE005 ·Voltage Regulator 4969966
  • Click Here To Download R120 User Manual

 14,500.00  20,000.00

AVR R120 Automatic Voltage Regulator For Generator of Leroy Some

Buy Leroy Somer AVRs Diode/Rotating Assemblies in Pakistan. You can buy the AVR R120 Automatic Voltage Regulator of Leroy Somer online anywhere from Pakistan or by visiting Electronic Power House (EPH) and Tetralink Technologies (TLT)   in Lahore. We are the main distributor of Leroy Somer AVRs in Pakistan.  We have all original Leroy Somer AVRs always ready in stock. All international & local brands of generator controllers are also available at very reasonable and best prices in Pakistan.

Key Features of AVR R120

  • The R120 AVR Automatic Voltage Regulator is an product used in LS Alternators
  • The R120 AVR is used on the following Alternators: TAL040 B, TAL040 C, TAL040 C1, TAL040 D, TAL040 E, TAL040 F
  • The R120 AVR is used on the following Alternators: TAL042 A, TAL042 B, TAL042 C, TAL042 D, TAL042 E, TAL042 F, TAL042 G, TAL042 H
  • The R120 AVR is used on the following Alternators: TAL044 A, TAL044 B, TAL044 C, TAL044 D, TAL044 D1, TAL044 E, TAL044 H, TAL044 J, TAL044 K
  • SAME EXACT AVR AS: ·Voltage Regulator AEM230RE005 ·Voltage Regulator 4969966

General description

The R120 automatic voltage regulator (AVR) is a compact, high-performance encapsulated unit. It incorporates the latest technology and efficient components to achieve a high degree of miniaturization when used with 3-phase and 1-phase AC brushless generators within its input and output limits. The unit offers excellent reliability.
The AVR provides DC excitation to the exciter field of a brushless generator to keep the voltage within the approximate operating limits from NO-LOAD to FULL LOAD.
The typical recovery time in the event of sudden loading is around 0.5 sec. to recover 98% of the rated voltage. Transient performance such as voltage dip and recovery time is mainly determined by the generator and exciter design parameters. Optimum AVR performance can be obtained by keeping full-load excitation to around 60 VDC.
The generator uses a true average sensing circuit, dV/dt snubber and special filter circuits to manage NON-LINEAR loads such as battery chargers, DC motors, etc. Voltage regulation is only guaranteed for linear loads. Severely distorting NONLINEAR loads can cause regulation problems.
Each AVR is tested prior to dispatch as part of a quality plan, for standard voltage and frequency.
A soft-start circuit is included which provides smooth control of the build-up of generator output voltage.
A frequency roll-off circuit continuously monitors the generator underspeed protection by reducing the generator output voltage in proportion with the speed below a threshold.

brands

Leroy Somer

color

Black

Technical Specifications

1) 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.
2) Input power – Voltage: 277 VAC rms ± 10% – Frequency: 50/60 Hz
3) Output power – Voltage: 95 VDC for 240 VAC Input – Current: • 4 A DC • 6 A for 30 sec. (when allowed by the field resistance)
4) Operating temperature: -20ºC to +70ºC
5) Storage temperature: -40ºC to +80ºC
6) Voltage setting: min ± 10% of rated voltage.
7) Stability setting: can be adjusted to obtain a correct transient response in steady state.
8) Under frequency roll-off setting: available below 46 Hz for 50 Hz and below 56 Hz for 60 Hz.
9) Voltage build-up: 2 Volts (L-N)
10) Voltage regulation: ± 1% at the AVR terminals with a THC <5%.
11) Thermal drift: ± 1% for 30ºC change in temperature.
12) Response time: less than 50 ms.
13) Closed loop response: typically 0.5 sec to recover 98% of the defined voltage for a field forcing ratio of 1:2.
14) Sensing loss protection: the voltage should disappear when the sensing circuit is open.
15) Overexcitation protection: 10 VDC to 85 VDC. Set point: 60 VDC
16) Protection fuse: 4 A, 240 VAC.
17) Potentiometer sealing: except for the V-trim potentiometer, all potentiometers are sealed.
18) Frequency roll-off indicator: LED provided (UF).
19) Sensing loss indicator: LED provided (SL).
20) Overexcitation indicator: LED provided (OE).
21) Protection on the devices: suitable R-C snubber to be provided for the device used to protect against voltage surges.
22) Potting/Encapsulation details: the components on the AVR should be completely encapsulated with suitable PU resin compound to absorb transients/ vibrations during operation.
23) Alternator excitation details: (typical) – Full load:
• Excitation voltage: 40 to 50 V
• Excitation current: 2.5 to 4.0 A
24) Terminal marking: see diagram
25) Dimensions:
– Overall: 104 x 94 x 40 (mm)
– Mounting: 83 (mm)
– Mounting hole dia: 5.5 (mm)
26) Weight: 185 g

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