New VR6 [Modo de ad

8/6/2019 New VR6 [Modo de ad

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VR6 Voltage Regulators


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VR6-A


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VR6-B


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Product Introduction

Replacement for VR3 and VR3F VR6-B replaced the VR3F in Larne and Griffin

, VR6-A still in reliability test VR6-A and VR6-B to replace all VR3s and VR3Fs


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Why a VR6?

VR3(F) designed in 1980s with 1980stechnology com onents becomin obsolete not designed for all the applications

Supplier contract runs out June 2002

Improvements needed for todays marketplace


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Improvements UL508A recognized/ CSA certified

Knee Frequency Adjustment Stability Adjustment

Same model works with SE and PM generators Operates at engine speed of 500 RPM and above

Single phase sensing with SE and PMs Improved response time


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Why 2 VR6s

Regulators functionally interchangeable Solves possible quality or supply problems


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VR6-B Specifications AC Input Power: Self Excited, 180 to 264 VAC, single phase or three phase,

50/60 Hz. PMG, three phase, 90 to 120 VAC, 100 to 240 Hz,

3125 VA maximum.

PMG, single phase, 240 VAC, 100 to 240 Hz, 3125 VA. Output Power (with a 240 VAC Input):

12 Amps DC @ 65 VDC maximum continuous.

25 Amps DC @ 125 VDC forcing for 10 seconds. AC Sensing Voltage:

True RMS three phase or single phase,180 to 264 VAC, 60 Hz;

150 to 220 VAC, 50 Hz.


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VR6-B Specifications Regulation Accuracy:

Less than 1% of voltage setpoint to full load. Voltage Drift:

Less than 1% voltage variation for a 40C (104F) change. Response Time:

Maximum of 4 milliseconds. Volts/Hz characteristic:

1 V/Hz with jumper between terminals 6A & 8. 2 V/Hz, with

jumper removed. Knee Frequency:

Knee frequency adjustable from 45 to 65 Hz.


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VR6-B Specifications Voltage Adjust Range:

+10% to 25% if regulator sensing voltage. External Voltage Adjust Rheostat:

10 kohm, 2 W, potentiometer.

Reactive Droop Adjustment . 1 A or 5 A CT, less than 10 VA burden. Internal CT burden resistor. Adjustable from 0 to 10%, at rated current, 0.8 power factor.


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VR6-B Specifications Power Dissipation:

50 W maximum. EMI Suppression: Internal filter.

o age u - p: Internal provisions for automatic voltage build-up from

generator residual voltages as low as six VAC.

Over Excitation Shutdown: Over excitation protection starts timing at 90 VDC, 5% andtakes the output to zero in greater than 30 seconds.

The output can be 125 VDC for greater than 10 seconds.


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VR6-B Specifications UL Recognized/CSA Certified.

UL Recognized per Standard 508, UL File NO. E97035. CSA Certified per Standard CAN/CSA-C22.2 No. 14-95, CSA File No. LR

23131. CE Conformity: Conforms to:

Radiated Emissions EN50081-2.

Electric field EN61000-4-3 (10 V/m). Conducted EN61000-4-6 (10 VRMS). Conducted Emissions EN50081-2 (EN55011, Class A). ESD Immunity EN50082-2 (4 KV contact, 8 KV air). EFT Immunity EN50082-2 (2 KV coupling clamp). Magnetic Immunity EN50082-2 (30ARMS, 50 Hz). Safety: EN61010-1.


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VR6-B Specifications Operating and Storage Temperature:

-40C (-40F) to +70C (+158F). Shock:

Withstands up to 20 g in each of three mutually

perpen cu ar axes. Vibration: Withstands the following accelerations at the stated

frequency: 0.5 g; 18 to 2000 Hz. Weight:

Approximately 1.1 kg (2.5 lbs.).


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Wiring


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5A Droop

Circuit5 Amp CT

5A 6

VR6-B


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1A DroopCircuit1 Amp CT

5 6

VR6-B


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Sensing Wires

VR3FSE &VR3FPM3-Phase

VR6-BSE & PM3-Phase

96A20

No jumper from 6A to 9

20

24

22 20 24

22

VR3FSESingle-Phase

2820

VR6-BSE & PM

Single-Phase

20

22


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Power Wiring

VR3FSE VR6-BSE

VR3FPM

26

28

30

VR6-BPM

26

28

30

20-2822-3024-26


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Excitation WiringVR3(F)SE and VR3(F)PM VR6-B SE & PM

F1 F2 F1 F2


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VAR/PF Controller Basler SCP-250VAR/PF Controller

C A3

2

Without

Var/PF Controller 2 3

VR6-B VR6-B


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Remote Adjust Pot

74

Without10K

6A 7

With

VR6-B VR6-B


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Volts/Hz Slope2 pu volts/hz slope(no jumper 6A to 8)

1 pu volts/hz slope

86A

VR6-BVR6-B


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VR6-B Adjustments


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Droop Adjustment

Droop Adjustment (DRP)

Is made for parallel operation soa a genera ors w ave e

same % reactive voltage droop.


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NOTICE---Do not operate generator at a voltagegreater than 5% above name plate rating.

Factory CalibrationFactory Voltage Adjust RangeCalibration (FAC CAL)

The factory calibration adjustment (FAC CAL)should be used by factory technicians only. Thefollowing procedure can be used if the factory

With the voltage regulator operating on agenerator, adjust the calibration potentiometer fully ccw and the voltage adjust potentiometer fully cw. Adjust the calibration potentiometer cwuntil the generator voltage is 252 1 VAC for 60Hz (226 1 VAC for 50 Hz) . Adjust the voltageadjust ccw and verify the generator voltage isbetween 156 and 180 VAC. The unit is calibrated

and the calibration potentiometer can be sealed.


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Voltage AdjustmentVoltage Adjustment (VLT ADJ)

1. Installation of a jumper across terminals 4 and 7allows the internal (front panel) VLT ADJ

adjustment to vary the generator nominal voltageover the operating range.

2. Remove the jumper between terminals 4 and 7

potentiometer across terminals 6A and 7 to allowoperation of the external voltage adjustpotentiometer.The internal voltage adjustment should be set fullyCW for proper operation of the external adjustment.


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Frequency Compensation

100%

Knee Frequency

Frequency

V o

l t a g

100%

50%

50%

1 Volts/Hz Slope

2 Volts/Hz Slope


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Knee FrequencyAdjustment

Knee Frequency Adjustment (UF KNEE)The underfrequency knee can be set for 50 (60) Hz

operation as described in the following paragraphs.1. Adjust the generator frequency for 50 (60) Hz.2. Adjust the underfrequency potentiometer (UF) fullyCCW, or until voltage does not increase with further turning.3. Adjust the Voltage Adjust for 200 (240) VACsensing as seen on terminals 20, 22 or 24.4. Adjust the underfrequency potentiometer (UF) CWuntil the volta e be ins to decrease.

5. Adjust the underfrequency potentiometer (UF)CCW until the voltage just returns to the value set inStep 3.6. The underfrequency knee is now set just below thenominal operating frequency. Further rotation in theCCW direction will lower the frequency at whichunderfrequency compensation begins.7. Connecting a jumper from terminal 8 to terminal 6awill provide an underfrequency slope of 1 pu V/Hz.

No connection to terminal 8 will result in anunderfrequency slope of 2 pu V/Hz.


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StabilityAdjustment

Stability Adjustment (STB) .


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Voltage Regulator - Test

Illustration 15Page 33


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Test Procedure


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10/12 Lead PMExcited with 3-Phase Sensing



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Notes page 35

10/12 L d S lf E it d With


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10/12 Lead Self-Excited With3-Phase Sensing



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Documents

New VR6 [Modo de ad