�����������������
��� �
��� �
���
��������������������
• 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
����������
• 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
����������• 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
�����������������• � ���������!�"
– 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.
• � ������������"– True RMS three phase or single phase,180 to 264 VAC, 60
Hz; 150 to 220 VAC, 50 Hz.
�����������������• �����������������"
– Less than ±1% of voltage setpoint to full load.• ������)����"
– Less than ±1% voltage variation for a 40°C (104°F) change.
• �������*��"– Maximum of 4 milliseconds.
• �����+,-��������������"– 1 V/Hz with jumper between terminals 6A & 8. 2 V/Hz, with
jumper removed.
• .��/�0����"– Knee frequency adjustable from 45 to 65 Hz.
�����������������• ��������1�������"
– +10% to – 25% if regulator sensing voltage.
• 23��������������1�����������"– 10 kohm, 2 W, potentiometer.
• �������)�������1������4– 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.
�����������������• ��!��)����������"
– 50 W maximum.
• 25������������"– Internal filter.
• ����������� 6�"– Internal provisions for automatic voltage build-up from
generator residual voltages as low as six VAC.
• #���23���������������!�"– Over excitation protection starts timing at 90 VDC, �5% and
takes the output to zero in greater than 30 seconds.
– The output can be 125 VDC for greater than 10 seconds.
����������� ��• ������ �����������������
– 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.• ���� � ������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.
�����������������
• #�����������������*�������"– -40°C (-40°F) to +70°C (+158°F).
• ����7"– Withstands up to 20 g in each of three mutually
perpendicular axes.
• ��8������"– Withstands the following accelerations at the stated
frequency:• 0.5 g; 18 to 2000 Hz.
• ����"– Approximately 1.1 kg (2.5 lbs.).
�����
9��)����
������9����� *
��� �
5A 6
:��)����
������:����� *
��� �
5 6
����������
��;/�2�<
��;/�5
; ����
��
�
��
��� �
�2�<��5
; ����
�� �
��
!��
��;/�2�
���� ����
��
�
�"��
��� �
�2�<��5
���� ����
��
��
=��1�����
�����������>
��!�������
��#$��
��#$%&
��
�"
#�
���'(
%&
��
�"
#�
��'�"
��'#�
� '��
���'(
��
23����������������;$/(�2�������;$/(�5
$) $�
��� ���2�<��5
$) $�
���+�/� ��������
���'(
����� � � %9'
���+�/� ��������� �
#�
���'(
�������
���+�/� ��������
� #
�������1�������
���'(
*
�������
���'(
)�+�
�� *
����
�����+,-�����
���'(
%������+,-�����
$���1�����������?(
���'(
:������+,-�����
"��
��� ����1�������
)�������1������
)�������1�������$)��(
Is made for parallel operation so that all generators will have thesame % reactive voltage droop.
NOTICE---Do not operate generator at a voltage greater than 5% above name plate rating.
$��� �����,-��� �/���������������1��������
���8�������$/� � �@(
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 � 1 VAC for 60 Hz (226 � 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.
��������1������
��������1�������$�@*��)A(
1. Installation of a jumper across terminals 4 and 7 allows the internal (front panel) VLT ADJ adjustment to vary the generator nominal voltage over the operating range.
2. Remove the jumper between terminals 4 and 7 and connect a 10k ohm external voltage adjust potentiometer across terminals 6A and 7 to allow operation of the external voltage adjust potentiometer. The internal voltage adjustment should be set fully CW for proper operation of the external adjustment.
/�0����� ����������
/�0����
�����
)��.
)��.
/�.
/�.
:������+,-�����
%������+,-�����
.��/�0����
+����$��01�����
��21������
.��/�0�������1�������$6/�.=22(
The underfrequency knee can be set for 50 (60) Hz operation as described in the following paragraphs.:4 Adjust the generator frequency for 50 (60) Hz.%4 Adjust the underfrequency potentiometer (UF) fully CCW, or until voltage does not increase with further turning.;4 Adjust the Voltage Adjust for 200 (240) VAC sensing as seen on terminals 20, 22 or 24.&4 Adjust the underfrequency potentiometer (UF) CW until the voltage begins to decrease.94 Adjust the underfrequency potentiometer (UF) CCW until the voltage just returns to the value set in Step 3.�4 The underfrequency knee is now set just below the nominal operating frequency. Further rotation in the CCW direction will lower the frequency at which underfrequencycompensation begins.B4 Connecting a jumper from terminal 8 to terminal 6a will provide an underfrequency slope of 1 V/Hz. No connection to terminal 8 will result in an underfrequency slope of 2 V/Hz.
���-,���
��21������
���8��������1�������$�*�( .
�������������� *��
Illustration 15 Page 33
*����������
10/12 Lead PM Excited with 3-Phase Sensing
Illustration 16 Page 36
Notes – page 35
10/12 Lead Self-Excited With 3-Phase Sensing
Illustration 18 Page 38