HT INDUSTRIAL AUTOMATION LIMITED

Leroy Somer Voltage Regulator AVR D350

Leroy Somer D350 Installation and maintenance Manual.pdf

Origin: France

Brand: Leroy Somer

Model: D350

Part Numbers: 5124059

The D350 Leroy Somer digital automatic voltage regulator AVR for industrial alternators provides excitation current up to 5 A with excellent reliability for permanent magnet (PMG) or AREP (auxiliary winding) excitation types.

Leroy Somer AVR D350 includes advanced protections such as over-excitation limitation and voltage sensing loss. It also includes speed detection capabilities, with over- and under-speed alarms. Leroy Somer D350 Voltage Regulator also features voltage droop for genset parallel operation, and it is equipped with a Load Acceptance Module (LAM) to handle load impact events.

Specifications for LEROY SOMER D350 AVR:

Technology:  Digital

Excitation mode   SHUNT, AREP, PMG

Rated excitation current     5 A

Regulation accuracy (+/- %)      0.25 %

Frequency range 10 – 100 Hz

Voltage setting range (+/- %)    10 %

kU/F limitation      0.5 < k< 3

Loss of sensing voltage      ✓

Over-excitation limitation    ✓

Short circuit current limitation    ✓

Voltage droop      ✓

Parallel operation between alternators    ✓

Load Acceptance Module (LAM)      ✓

Compatible Leroy Somer Alternators:

LSA 40

LSA 42.3

LSA 44.3

LSA 46.3

LSA 47.2

LSA 49.3

LSA 50.2

TAL 40

TAL 42

TAL 44

TAL 46

TAL 47

TAL 49

Configuration & setup

D350 can be configured using the Leroy-Somer EasyReg Advanced software.

Technical notes

ER09 : D350 contactor setting for three different voltages