Voltage Regulators

This solid state device is designed to control the output voltage of 50 or 60 Hz. AC alternators and ensures a stable voltage output is maintained under all load conditions. Directly replaces the Dunlite UVR 100 but will also electrically replace almost all known voltage regulators. It is suitable for both 3 and 1 machines with or without separate excitation. Parallel operation of machines is also possible with this device with only the addition of a quad droop input signal.

AVR380


Features include:

• Transformer isolated voltage sensing input.
• Four selectable input sensing voltage levels.
• Volts per Hz characteristic to protect prime movers on large step loads.
• Field current overload sensing and shutdown with opto isolated remote indicator output.
• Remote adjustment facilities.
• On board field output fuse.
• Optional crowbar overvoltage sensing and protection facilities.
• Open PC board construction for economic repairability.
• Improved reliability by use of PC board plated through holes and underrated component selection.
• Practical adjustment range for each voltage level.
• Field excitation powered from the sensing voltage input.
• On board potentiometers for :-
– Voltage.
– Stability coarse and fine droop point.
– Field excitation overload.
– Overvoltage (if fitted)
– Quad droop input facilities.

Electrical Specification

– Voltage sensing ranges 120, 208, 240 & 415Vac.
– Voltage sensing frequency 50 or 60Hz.
– On board voltage adjustment range + -10% of each range.
– Maximum field current 10A.
– Maximum field voltage 212Vdc.
– Field excitation switching SCR 50A 1600V.
– Regulation +-1%,with engine governing to class A 1803046.
– Underspeed adjustment range 10 – 55Hz.
– Underspeed shutdown time delay 15 – 20secs approximately.
– Minimum residual voltage for reliable excitation 3/5 volts.
– Minimum field resistance required 3/5 ohms.
– Remote adjustment potentiometer 5K ohms 2W.
– Quad droop input requirements 5A 1Ova.

Mechanical Specification

Weight: 0.71kg.
Operating Environment Temperature: -10°C to +70°C.
Vibration: 4gs. from 20 – 500 Hz.
Shock: 1M drop test.
Mounting
Folded aluminum surface mount case.

 

The GX340 is a solid state device designed to give accurate and stable voltage regulation of AC alternators regardless of prime mover types and ensures a stable voltage output is maintained under all load conditions. Directly replaces the Stamford Series 3 and 4 regulators but will also electrically replace almost all known voltage regulators. It is suitable for both 3 and 1 machines with or without separate excitation. Parallel operation of machines is also possible with this devise with only the addition of a quad droop input signal.

Model-GX340

Features include:

• Transformer isolated voltage sensing input.
• Volts per Hz characteristic to protect prime movers on large step loads.
• Field current overload sensing and shutdown.
• Remote adjustment facilities .
• Open PC board construction for economic repairability.
• Improved reliability by use of PC board plated through holes and underrated component selection.
• Practical voltage adjustment range.
• Field excitation powered from the sensing voltage input.
• Suitable for use with permanent magnet ic excitation
• On board potentiometers for :­
-Voltage.
– Stability coarse and
– Underspeed/voltage droop.
– Field excitation overload.
• Quad droop input facilities
• Increased stability range to overcome light flicker on 1 machines.

Electrical Specification

• Voltage sensing range 170 to 280Vac.
• Voltage sensing frequency 50 or 60Hz.
• On board voltage adjustment range + -10%
• Maximum field current 10A.
• Maximum field voltage 140Vdc.
• Field excitation switching SCR 25A 1OOOV.
• Regulation +-1%, with engine governing to class A 1803046.
• Underspeed adjustment range 10 – 11OHz.
• Underspeed shutdown time delay 15 -20 sees approximately.
• Minimum residual voltage for reliable excitation 3/5 volts.
• Minimum field resistance required 3/5 ohms.
• Remote adjustment potentiometer 5K ohms 2W.
• Quad droop input requirements 5A 1Ova.

Mechanical Specification

Weight: 0.33kg.
Operating Environment Temperature: -10°C to +70°C.
Vibration: 4gs. from 20 to 500 Hz.
Shock: 1M drop test.
Mounting: Open PC board for internal machine or switchboard mounting.

Note: Specifications can change without notice.

The GX600 is a solid state device designed to give accurate and stable voltage regulation of brushless AC alternators regardless of prime mover type. Directly replaces the Stamford Series 6 regulators but will also electrically replace almost all known voltage regulators. It is suitable for both 3 and 1 machine with either 50 or 60Hz outputs. It is especially useful on 1 machines in reducing light flicker with the increased stability adjustment range.

ModelGX600


Features include:

• Volts per Hz characteristic to protect prime movers on large step loads.
• Remote adjustment facilities.
• On board field output fuse.
• Open PC board construction for economic repairability.
• Improved reliability by use of PC board plated through holes and underrated component selection.
• Practical voltage adjustment range.
• Field excitation powered from the sensing voltage input.
• On board adjustment potentiometers for :­
– Voltage.
– Stability coarse and f ine.
– Underspeed/voltage droop.
– Field excitation overload.
• On board LED indication of underspeed operation.
• Replaces Stamford types E000-24600,
E000-26000, E450-13900.
• Wide stability adjustment
range for reducing light flicker.

Electrical Specification

Voltage sensing range 170 to 270Vac.
• Voltage sensing frequency 50 or 60Hz.
• On board voltage adjustment range + -10%
• Maximum f ield current 10A.
• Maximum field voltage 135Vdc.
• Field excitation switching SCR 25A 800V.
• Regulation +-1%, with engine governing to class A IS03046.
• Underspeed adjustment range 10 – 55Hz.
• Underspeed shutdown time delay 15 -20 sees approximately.
• Minimum residual voltage for reliable excitation 3/5 volts.
• Minimum field resistance required 3/5 ohms.

Mechanical Specification

Weight: 0.2kg.
Operating Environment Temperature: -10°C to +70°C.
Vibration: 4gs. from 20 to 500 Hz.
Shock: 1M drop test.
Mounting: Open PC board for internal machine or switchboard mounting.

Note: Specifications can change without notice.

 

This solid state device is designed to control the output voltage of 50 or 60 Hz. AC alternators and ensures a stable voltage output is maintained under all load conditions. Directly replaces the Dunlite SR101A but will also electrically replace almost all known voltage regulators. It is suitable for both 3 and 1 machines with or without separate excitation and is especially good on 1 machines in reducing light flicker due to its increased stability adjustment range.

AVR400


Features include:

• Two selectable input sensing voltage ranges.
• Volts per Hz characteristic to protect prime movers on large step loads.
• Field current overload sensing and shutdown.
• Remote adjustment facilities.
• On board field output fuse.
• Open PC board construction for economic repairability.
• Improved reliability by use of PC board plated through holes and underrated component selection.
• Practical adjustment range for each voltage level.
• Field excitation powered from the sensing voltage input.
• On board potentiometers for :­
-Voltage.
– Stability coarse & fine.

Electrical Specification

• Two voltage sensing ranges 120 to 208 and 240 to 415Vac.
• Voltage sensing frequency 50 or 60Hz.
• On board voltage adjustment range + -10% of each range.
• Maximum field current 10A.
• Maximum field voltage 212Vdc.
• Field excitation switching SCR 50A 1600V.
• Regulation +-1%, with engine governing to class A 1803046.
• Underspeed adjustment range 10 – 55Hz.
• Underspeed shutdown
time delay 15 -20secs approximately.
• Minimum residual voltage for reliable excitation 3/5 volts.
• Minimum field resistance required 3/5 ohms.
• Remote adjustment potentiometer 5K ohms 2W.

Underspeed/voltage
droop point.
Field excitation overload.

Mechanical Specification

Weight: 0.4kg.
Operating Environment Temperature: -1ooc to +70°C.
Vibration: 4gs. from 20 – 500 Hz.
Shock: 1M drop test.

Folded aluminium surface

Note: Specifications can change without notice