Kutai electronics ADVR-250 Manuel utilisateur

KUTAI ELECTRONICS INDUSTRY CO., LTD.

TEL : +886-7-8121771 FAX : +886-7-8121775 Website : www.kutai.com.tw

Headquarters : No.3, Ln. 201, Qianfu St., Qianzhen Dist., Kaohsiung City 80664, Taiwan

ADVR-250

Generator Automatic Voltage Regulator

Operation Manual

Analog / Digital，Single-phase detection，Excitation Current 3.5 Amps.

For use in brushless, self-excited (shunt) generators

Compatible with Leroy Somer* R250/R230, AVR

* All manufacturer names and numbers are used for reference purpose only

and do not imply that any part is the product of these manufacturer.

___________________________________________________________________________________________

2ADVR-250

Figure 1 Outline Drawing

SECTION 1 : SPECIFICATION

Sensing Input ( 0V, 110V ) Average Reading

Under Frequency Protection (Factory Presets)

Voltage 85 140 Vac, 1 phase 2 wire

50 Hz system knee point at 48 Hz

Frequency 50/60 Hz, Potentiometer setting

60 Hz system knee point at 58 Hz

Excitation Output ( E+, E- )

Over Excitation Current Limiting

120V 1 phase Continuous 63 Vdc 3.5A

Excitation Current 5 A +/- 10 %

Max. 110 Vdc 5A for 10 secs.

Resistance Min. 18 ohms, Max.100 ohms

Voltage Thermal Drift

Fuse Spec. Slow blow 5 x 20mm 8A

Less than 3% at temperature range -40 to +70 ˚C

External Voltage Adjustment (1K ohm )

Under Frequency Knee Point Thermal Drift

Max.+/- 14% @ 1 K ohm 1 watt potentiometer

Less than +/- 0.1 Hz at -40 to +70 ˚C

Voltage Regulation

Environment

Less than +/- 0.5% (with 4% engine governing)

Operating Temperature -40 to +70 ˚C

Storage Temperature -40 to +85 ˚C

Build Up Voltage

Relative Humidity Max. 95%

5 Vac 25 Hz residual volts at power input terminal

Vibration 5.5 Gs @ 60 Hz

Soft start ramp time

Dimensions

3 seconds +/- 10%

140.0 (L) x 81.0 (W) x 46.0 (H) mm

5.51 (L) x 3.19 (W) x 1.81 (H) inch

Typical System Response

Less than 20 milliseconds

Weight

300 g +/- 2%

EMI Suppression

0.66 lb +/- 2%

Internal electromagnetic interference filtering

Static Power Dissipation

Max. 4 watts

SECTION 2 : APPEARANCE / DIMENSIONS / INSTALLATION DRAWING

Unit : mm

[inch]

[3.19"]

81.0

[5.51"]

140.0 [4.53"]

115.0 [1.06"]

27.0

[1.96"]

50.0

[1.81"]

46.0

M4 L25

8.5

[0.33"]

Connection Terminals：6.35 mm (1/4 inch)

Flag Terminals ( “Fast-On” terminals ).

___________________________________________________________________________________________

ADVR-250 3

SECTION 3 : POTENTIOMETER ADJUSTMENT

0V, 110V：

Power Supply

and Sensing Input

* Over Excitation Current Limiting (O/C)

When the excitation current is greater than or exceeds 5A the AVR will reduce the excitation output to limit the

excitation current. At this time the generator output voltage will be in a very unable state (the greater the load the

lower the voltage). Over current protection will not interrupt the excitation field output.

* LAM (Load Acceptance Module) Outline

When the generator experiences momentary increases in load (more 40% of generator capacity) voltage and

engine speed will decrease. The process of recovering voltage and engine speed will produce a situation where

output voltage and engine speed fluctuates. In order to reduce the level of volatility, after a load is added the

engine speed will slow, lowering the total power output of the generator and delaying recovery.

The low frequency knee point setting should be below a nominal setting for 2 Hz to cause the output voltage and

engine speed to have a smooth recovery.

The LAM function allows choice of reduction settings of 13% and 25%. If the generator has a fluid drive (hydro) it

is recommended not to use the LAM function.

E+, E-：

Excitation Output

VOLT：Voltage Adjustment

STAB：Stability Adjustment

O/C LED：Over Excitation

Current Limiting Status

Indicator.

When over excitation current

limiting function is operating

(Excitation Current >5A)，this

LED will light up.

U/F LED：Under Frequency

Protection Status Indicator.

1K ohm：

External VR

input, Must be

shorted with a

jumper when

not in use.

U/F function and LAM potentiometer：

See SECTION 4 for more detail

110V

E+

E-

1 KΩ

STABVOLT U/FO/C

012

ADVR-250

Figure 2

___________________________________________________________________________________________

4ADVR-250

SECTION 4 : U/F PROTECTION & LAM

FUNCTION SELECTION

The Under Frequency Protection (U/F) and LAM

function can be selected using the potentiometer.

SPECIAL

65Hz

57Hz

KNEE

KNEE 5

012

60Hz

50Hz

Figure 3

ATTENTION

The potentiometer settings must correspond to

the rated frequency. An error in settings could

cause damage to the generator.

50 Hz Systems

0：Under Frequency knee point 48 Hz, LAM function

“OFF”. Use when transient loads are below 40% of

rated generator capacity.

1：Under Frequency knee point 48 Hz, LAM function

set to (13%), Use when transient loads are

between 40 –70% of rated generator capacity.

2：Under Frequency knee point 48 Hz, LAM function

set to (25%). Use when transient loads are greater

than 70% of rated generator capacity.

60 Hz Systems

3：Under Frequency knee point 58 Hz, LAM function

“OFF”. Use when transient loads are below 40% of

rated generator capacity.

4：Under Frequency knee point 58 Hz, LAM function

set to (13%), Use when transient loads are

between 40 –70% of rated generator capacity.

5：Under Frequency knee point 58 Hz, LAM function

set to (25%). Use when transient loads are greater

than 70% of rated generator capacity.

Special Systems

6：Under frequency knee point 57 Hz, LAM function

“OFF”. Under a load, engine speed variations can

be greater than 2 Hz.

7：Under frequency knee point 65 Hz, LAM function

“OFF”.

8：Factory setting of the Under Frequency knee point

is 48 Hz and LAM function “OFF”. This option is

supplied for special projects, which must be

ordered separately and are set at the factory.

9：Under frequency knee point 47.5 Hz，LAM function

“OFF”. Under a load, engine speed variations can

be greater than 2 Hz.

___________________________________________________________________________________________

ADVR-250 5

SECTION 5 : CONNECTION DIAGRAMS

110V

E+

E-

1 KΩ

STAB

VOLT U/FO/C

012

ADVR-250

1000 Ohm

EXT. VR

Field

R SN T

Figure 4

110V

E+

E-

1 KΩ

STABVOLT U/FO/C

012

ADVR-250

1000 Ohm

EXT. VR

Field

R SN T

Figure 5

ATTENTION

1. Before using a Megger or a Withstand Voltage Tester, removes the wires connecting to the AVR to

prevent high voltage damage to the regulator.

2. Improper setting of under-frequency protection could cause the output voltage of the unit to drop or

become unstable under with changes in load. Avoid making any changes to the U/F setting unless

necessary.

※Use only replacement fuses specified in this user manual.

※Appearance and specifications of products are subject to change for improvement without prior notice.

190/220 Vac

110 Vac

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