Emerson Leroy Somer R250 Installation And Maintenance Manual Download Page 7

Page: 7 / 16

2016.05 / e

Electric Power Generation

Installation and maintenance

R250

A.V.R.

4067 en -

2.5 - Typical effects of the LAM with a

diesel engine or without a LAM (U/F

only)

2.5.1 - Voltage

2.5.2 - Frequency

2.5.3 - Power

0,9

0,8

(U/f)

with

LAM

Time

without LAM

1 s

2 s

3 s

Transient voltage drop

0,9

0,8

Max speed drop

with

LAM

Time

without

LAM

1 s

2 s

3 s

1 s

2 s

3 s

Time

LAM

Load variation

Load on shaft (kW)

Shedding due to "LAM"

Summary of Contents for Leroy Somer R250

Page 1: ...EQ L A M CONFIG STAB 110 E E 0V 0 9 8 7 6 5 4 3 2 1 o 1 2 3 5 6 7 9 8 4 60Hz 65Hz 57Hz 47 5Hz 50Hz KNEE SPECIAL LAM OFF OFF 13 13 25 25 LAM KNEE KNEE LAM OFF LAM OFF LAM OFF A V R R250 Installation and maintenance ...

Page 2: ...ning symbol for electrical danger to personnel All servicing or repair operations performed on the AVR should be undertaken by personnel trained in the commissioning servicing and main tenance of electrical and mechanical components When the generator is driven at a frequency less than 28 Hz for more than 30 seconds with an analogic regulator the AC power must be disconnected WARNING This A V R ca...

Page 3: ...NSTALLATION COMMISIONING 8 3 1 Electrical checks on the AVR 8 3 2 Settings 8 3 3 Electrical faults 9 4 SPARE PARTS 10 4 1 Designation 10 4 2 Technical support service 10 Disposal and recycling instructions The R250 is an IP00 product It must be installed inside a unit so that this unit s cover can provide IP20 minimum total protection it must only be installed on our alternators in the appropriate...

Page 4: ...s not have a short circuit capacity 4 x holes Ø 5 8 x 50 x 115 mm 140 mm 75 mm SHUNT SYSTEM Field Induced T1 T2 T3 T4 T5 T6 Varistor 5 6 T7 T8 T9 T10 T11 T12 STATOR 12 wires marking T1 to T12 MAIN FIELD R250 VOLT FREQ L A M CONFIG STAB F1 Slow fuse 250V 8 A P1 Voltage P2 Stability 110 E E 0V 0 9 8 7 6 5 4 3 2 1 o 1 2 3 5 6 7 9 8 4 60Hz 65Hz 57Hz 47 5Hz 50Hz KNEE SPECIAL LAM OFF OFF 13 13 25 25 LAM...

Page 5: ...z without LAM for impacts between 30 and 40 of the rated load 1 threshold at 48 Hz with LAM 13 for impacts between 40 and 70 of the rated load 2 threshold at 48 Hz with LAM 25 for impacts 70 of the rated load Operating at 60 Hz U F gradient 3 threshold at 58 Hz without LAM for impacts between 30 and 40 of the rated load 4 threshold at 58Hz with LAM 13 for impacts 40 and 70 of the rated load 5 thre...

Page 6: ...0 until the speed reaches its rated value again Hence the LAM can be used either to reduce the speed variation frequency and its duration for a given applied load or to increase the applied load possible for one speed variation turbo charged engines To avoid voltage oscillations the trip threshold for the LAM function should be set approximately 2 Hz below the lowest frequency in steady state It i...

Page 7: ...e LAM with a diesel engine or without a LAM U F only 2 5 1 Voltage 2 5 2 Frequency 2 5 3 Power UN 0 0 9 0 8 U f with LAM Time without LAM 1 s 2 s 3 s Transient voltage drop 0 9 0 8 fN Max speed drop 0 with LAM Time without LAM 1 s 2 s 3 s 0 1 s 2 s 3 s Time LAM Load variation Load on shaft kW Shedding due to LAM ...

Page 8: ...entiometer positions voltage setting potentiometer P1 for the A V R full left remote voltage setting potentiometer in the middle Operate the alternator at its rated speed if the voltage does not rise it is necessary to re magnatise the magnetic circuit slowly adjust the voltage potentiometer of the A V R P1 until the output voltage reaches its rated value Stability setting with P2 3 2 2 Special ty...

Page 9: ... too low Increase the drive speed Do not touch the A V R pot P1 before returning to the correct speed Voltage too high Adjust A V R potentiometer Adjustment ineffective Faulty A V R 1 faulty diode Voltage oscillations Adjust A V R stability potentiometer Check the speed possibility of cyclic irregularity Loose terminals Faulty A V R Speed too low on load or U F gradient set too high Voltage correc...

Page 10: ...tion needed For replacement part orders it is necessary to indicate the type and the code number of the A V R Please contact your usual correspondant An extensive network of service centres is available to rapidly supply any necessary parts In order to ensure the correct operation and safety of our machines we strongly recommend that original manufacturer s spare parts are used Failure to do so wi...

Page 11: ...Our technical support depar tment can provide detailed directions on products dismounting upon request Waste hazardous materials The following components and materials need a special treatment and need to be separated from the alternator before the recycling process electronic materials found in the terminal box including the Automatic Voltage Regulator 198 Current Transformers 176 interference su...

Page 12: ...12 2016 05 e Electric Power Generation Installation and maintenance R250 A V R 4067 en ...

Page 13: ...13 2016 05 e Electric Power Generation Installation and maintenance R250 A V R 4067 en ...

Page 14: ...14 2016 05 e Electric Power Generation Installation and maintenance R250 A V R 4067 en ...

Page 15: ...maintenance services Trust your alternator maintenance and support to electric power generation experts Our field personnel are 100 qualified and fully trained to operate in all environments and on all machine types We know alternators operation inside out providing the best value service to optimize your cost of ownership Where we can help Contact us Americas 1 507 625 4011 Europe International 3...

Page 16: ...www emersonindustrial com www emerson com epg 2016 05 e 4067 en ...

Search results

Summary of Contents for Leroy Somer R250

Reviews:

Related manuals for Leroy Somer R250

Brands by name

Popular brands

Emerson Leroy Somer R250, Installation And Maintenance Manual

Search results

Summary of Contents for Leroy Somer R250

Reviews:

Related manuals for Leroy Somer R250

Brands by name

Popular brands