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Power-Tronics, Inc.
Electronic Voltage Regulators and Static Exciters
Phone: 830.895.4700
Fax: 830.895.4703
Input Volts:
Frequency:
Voltage Regulation:
Output Volts:
Maximum Continuous Output:
Minimum Field Resistance:
Min Residual Build up Volts:
Physical Size:
Weight:
Repairable:
Internal Protection:
External Voltage Adjustment:
Flat Response Regulation:
Volts Per Hertz Regulation:
System Operating Indicator:
P.O. Box 291509, Kerrville, Texas 78029
Email: pwrtron@power-tronics.com
Specifications
Web: www.power-tronics.com
VR758 Voltage
Regulator
The VR758 is a cost effective, specifically
designed, single purpose voltage regulator
that will allow it to be used as either a flat
response or volts per hertz mode and is
compatible with most SCR loads such as
speed controls and UPS systems.
120 or 240acv
50 or 60hz
+/- 1% of setting
0-52vdc @ 120vac input
0-105vdc @ 240vac input
8adc
6.5Ω @ 120vac input
13Ω @ 240vac input
5vac
4.75 x 6 x 1 in.
6 oz
Yes
No
Yes
Yes, selectable
Yes, selectable
Yes
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Table of Contents
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Summary of Contents for Power-Tronics VR758
- Page 1 Email: pwrtron@power-tronics.com Web: www.power-tronics.com VR758 Voltage Regulator The VR758 is a cost effective, specifically designed, single purpose voltage regulator that will allow it to be used as either a flat response or volts per hertz mode and is compatible with most SCR loads such as speed controls and UPS systems.
- Page 2 The VR758 voltage regulator is specifically designed so that it can be used in applications, which require either VPH, or Flat Response regulation.
- Page 3 Use a fast acting 250vac fuse. 10 amps or less! ADJUST VR758 Determine if the application requires the regulator to be VPH or Flat Response mode. The regulator is shipped as VPH. If the regulator is to be configured as Flat Response, remove the jumper located on the...
- Page 4 Turn the internal voltage control and stability control 15 or more turns counter clockwise (left). This procedure is necessary in case the original factory settings have been altered. If you are using a remote voltage adjustment, set it at 50% of adjustment. Start up the prime mover and bring up to operating speed and turn on the regulator switch.
- Page 5 18. Exciter fields are not isolated from other circuits. 19. Input and field circuit are being fed by a common cable or conduit. 20. Incorrect hookup or wiring. For the latest product updates and technical information, please visit our web site at: www.power-tronics.com...
- Page 6 Bench Check Procedures for testing the VR758 Voltage Regulator. 120v light bulb, 25w or higher Test Light 120vac fused at 5 amps To test the regulator for flat response regulation, remove the selection jumper as shown in the installation instructions.
- Page 7 It is very important that you fill out this form completely when installing a voltage regulator. This form serves as a history record on the application. This form also contains the information needed by Power-Tronics, Inc., for repair and troubleshooting of any product you may be having problems with.
- Page 8 PRODUCT WARRANTY Power-Tronics, Inc., assumes no liability for damages due to incorrect voltage or other voltage related damages resulting from either output of the generator or input to the generator exciter system. These problems should be protected with external devices provided by the customer such as fuses, surge suppressors, over/under voltage and frequency controls.
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