HT INDUSTRIAL AUTOMATION LIMITED

Leroy Somer Auto Voltage Regulator AVR R450T 

R450M R450T Series Manual Download.pdf

We have Leroy Somer AVR R450T in our regulator stock!

R230, R250, R438, R448, R449, R450, R450M, R450T 

R450T AVR have different connectors compared to R450 AVR. 

The Brands mentioned here are for reference purpose only, our parts can exactly replace the original ones.

R450T AVR FOR SHUNT, AREP or PMG AlterNATORS 

Description:

Leory Somer R450T is an analog A.V.R.. It is designed for alternators with a SHUNT, AREP or PMG excitation .

R450T Leroy Somer Auto Voltage Regulator controls the excitation current in order to maintain the output voltage of the alternator. Leroy Somer R450 is performant in terms of voltage regulation, simple to set, to use and is reliable.

Rotating switch for U/f, LAM, excitation type and voltage sensing are available. It is in compliance with I.E.C. 60034-1 standard and U.L. 508 / C.S.A. approved 

Operation mode: Standalone 

Main feature and characteristics:

- Voltage regulation : ± 0.5 %.

- Under-speed protection by function :

1 U/f (LAM : OFF).

2 U/f (LAM : MODE1).

Auto-adaptating LAM + 2 U/f (LAM : MODE 2).

- Nominal excitation current : 6A.

- Maximum excitation current : 10A during 10 s.

- Provide range 150V (50Hz/60Hz).

- Voltage détection : ≤ 530 V.

- Protection : fuse fast 10A.

- Protection on load, short-circuit and voltage reference loss. 

Operation conditions of R450T Auto Voltage Regulator: 

- Operating temperature range : - 40° C à + 65° C.

- Storage temperature range : - 55° C à + 85° C.

- Hygrometry : 98%.

- Maximum choc : 9 g on 3 axis..

- Vibrations : less than 10 Hz , 2 mm peak magnitude.

From 10 Hz to 100 Hz : 100 mm/s, below 100 Hz : 8g.

Optional modules compatible

- R 731 : three phase voltage sensing.

- R 734 : 3-phase current and voltage sensing for parallel operation

- R 726 : regulation system changed to “4 - function” 

Connexion and setting of Leroy Somer Auto Voltage Regulator R450T :

Settings are done through the A.V.R.

- Potentiometer P1 : voltage setting.

- Potentiometer P2 : stability setting.

- Potentiometer P3 : excitation.

- Rotating switch selection 1 : frequency, U/F function, LAM function

- Rotating switch selection 2 : alternator type and voltage sensing (1 ph. ou 3 ph.).

- Rotating switch selection 3 : excitation type (AREP or PMG) and time response.

- Potentiometer P4 : quadrature droop.