VR6 Replaced VR3

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(6) • Replacement for VR3 and VR3F • VR6-B replaced the VR3F in Larne and Griffin September 1, 2001 • VR6-A still in reliability test • VR6-A and VR6-B to replace all VR3s and VR3Fs.

(7) • VR3(F) designed in 1980s with 1980s technology – components becoming obsolete – not designed for all the applications. • Supplier contract runs out June 2002 • Improvements needed for today’s marketplace.

(8) . • • • • •. UL508A recognized/ CSA certified Knee Frequency Adjustment Stability Adjustment Droop Circuit part of regulator 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.

(9) ! " . • # $ %. – 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.. • & $ '$ ()*# +% – 12 Amps DC @ 65 VDC maximum continuous. – 25 Amps DC @ 125 VDC forcing for 10 seconds.. • #!

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(11) % – True RMS three phase or single phase,180 to 264 VAC, 60 Hz; 150 to 220 VAC, 50 Hz..

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(13) % – Less than ±1% of voltage setpoint to full load.. •

(14) ," % – Less than ±1% voltage variation for a 40°C (104°F) change.. • - % – Maximum of 4 milliseconds.. • ./0 % – 1 V/Hz with jumper between terminals 6A & 8. 2 V/Hz, with jumper removed.. • 1 2 3 % – Knee frequency adjustable from 45 to 65 Hz..

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(17) % – +10% to – 25% if regulator sensing voltage.. • 56

(18) 4 . % – 10 kohm, 2 W, potentiometer.. • ,4 7 – 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..

(19) ! " • $ ,. %. – 50 W maximum.. • 58!. %. – Internal filter.. •

(20) 9% – Internal provisions for automatic voltage build-up from generator residual voltages as low as six VAC.. • & 56. ! $% – Over excitation protection starts timing at 90 VDC, r5% and takes the output to zero in greater than 30 seconds. – The output can be 125 VDC for greater than 10 seconds..

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(27) – 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. •

(28) Conforms to: – Radiated Emissions EN50081-2. – Radiated Immunity: • 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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(31) - % – -40°C (-40°F) to +70°C (+158°F).. • !:% – Withstands up to 20 g in each of three mutually perpendicular axes.. • ; % – Withstands the following accelerations at the stated frequency: • 0.5 g; 18 to 2000 Hz.. •

(32) % – Approximately 1.1 kg (2.5 lbs.)..

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(49) ,4 . ,4 ',+ Is made for parallel operation so that all generators will have the same % reactive voltage droop..

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(54) # ; '2##C+. NOTICE---Do not operate generator at a voltage greater than 5% above name plate rating. The factory calibration adjustment (FAC CAL) should be used by factory technicians only. The following procedure can be used if the factory calibration has been disturbed: With the voltage regulator operating on a generator, adjust the calibration potentiometer fully ccw and the voltage adjust potentiometer fully cw. Adjust the calibration potentiometer cw until the generator voltage is 252 r 1 VAC for 60 Hz (226 r 1 VAC for 50 Hz) . Adjust the voltage adjust ccw and verify the generator voltage is between 156 and 180 VAC. The unit is calibrated and the calibration potentiometer can be sealed..

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(57) 4 'C-,D+ 1. Installation of a jumper across terminals 4 and 7 allows the internal (front panel) VLT ADJ adjustment to vary the generator nominal voltage over the operating range. 2. Remove the jumper between terminals 4 and 7 and connect a 10k ohm external voltage adjust potentiometer across terminals 6A and 7 to allow operation of the external voltage adjust potentiometer. The internal voltage adjustment should be set fully CW for proper operation of the external adjustment..

(58) 2 3 # 1 2 3

(59) . ,""1 = ./0! 2"1 ( ./0! 2"1. ,""1. 2 3 .

(60) 1 2 3 4 '921@55+ The underfrequency knee can be set for 50 (60) Hz operation as described in the following paragraphs. =7 Adjust the generator frequency for 50 (60) Hz. (7 Adjust the underfrequency potentiometer (UF) fully CCW, or until voltage does not increase with further turning. >7 Adjust the Voltage Adjust for 200 (240) VAC sensing as seen on terminals 20, 22 or 24. )7 Adjust the underfrequency potentiometer (UF) CW until the voltage begins to decrease. <7 Adjust the underfrequency potentiometer (UF) CCW until the voltage just returns to the value set in Step 3. 7 The underfrequency knee is now set just below the nominal operating frequency. Further rotation in the CCW direction will lower the frequency at which underfrequency compensation begins. E7 Connecting a jumper from terminal 8 to terminal 6a will provide an underfrequency slope of 1 V/Hz. No connection to terminal 8 will result in an underfrequency slope of 2 V/Hz.. .. ' 34 54 .

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(66) - . Illustration 15 Page 33.

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(68) 10/12 Lead PM Excited with 3Phase Sensing. Illustration 16 Page 36.

(69) Notes – page 35.

(70) 10/12 Lead Self-Excited With 3-Phase Sensing. Illustration 18 Page 38.

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