The AVR D350 is a digital voltage regulator.

- Voltage regulation:

- With or without reactive power compensation to enable parallel operation of the
machine in parallel.
- With or without line drop compensation.2
- Field current regulation or manual mode, which allows direct control of the field current value. of the field current value.

The D350 can also be used to:
- Set the reference of the current regulation mode by using an analogue input (0-10 V and potentiometer).Analogue input (0-10 V and potentiometer)
- Temperature sensor monitoring (Pt100 or CTP)
- Limiting the minimum field current provided to the driver field
- Monitoring of the maximum stator current limit
- Voltage loss detection
- Support sudden short-circuit for max. 10 seconds in AREP, PMG
- Signal monitoring (event logger)
Different elements of measurement data, shutdowns and regulation modes can be output on the 2 digital outputs.
- Alternator voltage detection:
- 3-phase without neutral, 2-phase or 1-phase with neutral.
- Three-phase range 0-530 V AC
- Consumption < 2 VA
- Stator current measurement with current transformer:
- Range 0-1 A or 0-5 A
- Consumption < 2 VA
- Power supply:
- AC:
- 4 terminals for PMG, AREP, SHUNT
- Range 50-277 V AC
- Maximum consumption < 3000 VA
- DC (unmanaged preload):
- Range 50-400 V DC
- Maximum consumption < 3000 VA
- Field excitation
- Nominal 0-5 A
- Short circuit 10 A max.
- Field winding resistance > 4 ohms
- Frequency
- Range 10-100 Hz

- Regulation accuracy: +/-0.25 % of the average of the three phases at a linear load, with a harmonic distortion of less than 5 %.
- Voltage setting range: 0 % to 150 % of rated voltage
- Droop setting range: -20 % to 20 % of rated voltage
- Underfrequency protection: integrated, adjustable threshold, adjustable slope from 0.5 to 3 x V/Hz in 0.1 V/Hz steps
in steps of 0,1 V/Hz
- Excitation limit: adjustable via 3-point setting
- Environment: ambient temperature from -40 °C to +65 °C, relative humidity less than 95 %, non-condensing, mounted in a cabinet condensation, mounted in a cabinet or terminal box.
- AVR parameters set with "EasyReg Advanced" software provided by Leroy-Somer
- Dimensions:
- Height: 52.9 mm
- Width: 125 mm
- Length: 140 mm
- Mounting:
- Hole spacing in the length: 115 mm
- Hole spacing in width: 100 mm
- Weight: 0.45 kg
- Conformity to standards:
- EMC: IEC 61000-6-2, IEC 61000-6-4
- Moisture: IEC 60068-1 and test according to IEC 60068-2-14
- Dry heat: IEC 60068-2-2
- Damp heat: IEC 60028-2-30
- Cold: IEC 600068-2-1

Module NFLink for TAL AVR D350 Leroy Somer

Genuine product! - Worldwide Shipping

The AVR provides closed loop control by sensing the alternator output voltage at the main stator windings and adjusting the exciter stator field strength.

Voltage induced in the exciter rotor, rectified by the rotating diodes, magnetizes the rotating main field which induces voltage in the main stator windings.

A self-excited AVR receives power from the alternator output terminals or a special auxiliary winding in the main stator winding.

The STAMFORD Diode Failure Detector (DFD) senses ripple current in the exciter output caused by diode failure in short or open circuit, and switches an internal relay if it persists for 7 seconds.

AVR Electronic Regulator R180 Leroy Somer

The R180 automatic voltage regulator (AVR) for the TAL series of industrial alternators provides excitation current up to 6 A with excellent reliability for permanent magnet (PMG) or AREP excitation types.

The R180 includes advanced protections such as over-excitation limitation and voltage sensing loss, and also features voltage droop for genset parallel operation.