Phaseback Voltage Stabilizing Ground Reference (VSGR)

Phaseback is a revolutionary Voltage Stabilizing Ground Reference (VSGR) device that serves as a Surge Suppressor, Voltage Regulator and Harmonic filter, without the need for metal oxide varistors (MOVs).

The patented Voltage Stabilizing Ground Reference makes instant corrections to any phase that is out of balance, and protects against any sized power surge in all power systems up to 230KV.

Instantaneous, automatic and reliable

When activated, Phaseback VSGR makes an instantaneous correction to any phase voltage that is out of balance.

It prevents transient voltages such as those generated by switching transients or phase faults. Additionally, it uses electromagnetic interaction of mutual induction to control voltages, protecting the device components and reducing degradation over time or through repeated usage.



Using electromagnetism in lieu of solid-state components, Phaseback VSGR reacts at the speed of the current flow at the start of a phase voltage imbalance. Energy is redirected from the phase with the higher voltages and fed back to the low voltage phase. This process uses heavy-duty industrial rated inductive devices closely coupled for maximum efficiency and continuous duty in wet, dirty, or harsh environments as well as being designed for severe shock and vibration.



Phaseback VSGR balances and stabilizes phase voltages with respect to ground. This phase correction allows motors, drives and control systems to operate more reliably. This voltage stabilization also maintains the ground reference in the event of a power failure or scheduled shutdown, preventing damage to sensitive equipment.


Transient Voltages and Arcing ground-faults cause high frequency noise, insulation breakdown, control lockups and premature equipment failure. Most solid grounds, which can cause an arc-flash hazard, start as arcing ground faults. Phaseback VSGR prevents arcing ground faults, reducing the potential for arc-flash by over 85% and even in a scheduled or unscheduled power outage, Phaseback VSGR discharges the stored energy from the power distribution, reducing the arc-flash danger. Phaseback VSGR has been used in ungrounded and grounded systems up to 230KV, and has been unaffected by any sized power surge or noise outside its operational parameters.


Phase voltage harmonics cause eddy currents, which cause heat in motors, transformers and all other inductive devices. Phaseback VSGR reduces all harmonics, including zero, even, odd and inter-harmonics, by 85% instantly.
Phaseback VSGR reduces harmonic frequencies by the square law factor. The 3rd harmonic is filtered 9 times, the 5th harmonic is filtered 25 times and the 7th harmonic is filtered 49 times the typical loss of 60Hz noise. This typically reduces all harmonics 50% to 85% from the 2nd harmonic through the 56,000,000th harmonic of 60Hz. Unlike other types of inline filters designed for smoothing the current in 1 or 2 harmonics, Phaseback VSGR reduces harmonic noise by beating it against itself so it reduces all harmonics.
In the field, Phaseback VSGR has eliminated harmonic frequencies exceeding 3.6GHZ, the equivalent of an EMP.

Phaseback VSGR reduces power consumption, extends motor life and protects against transients and damaging harmonics unlike anything else on the market.



Applied Energy LLC has developed a Voltage Stabilizing Ground Reference device using electromagnetism in lieu of solid-state components. This allows Phaseback VSGR to react at the speed of the current flow at the start of a phase voltage imbalance. Energy is redirected from the phase with the higher voltages and fed back to the low voltage phase. This process uses heavy-duty industrial rated inductive devices closely coupled for maximum efficiency and continuous duty in wet, dirty, or harsh environments as well as being designed for severe shock and vibration.

Though originally created based on mainframe computer operation, today’s control systems being smaller and faster have made adherence to the magnitude and duration of power disturbance considerations of the CBEMA Curve and its successor the ITIC Curve even more critical.

Ungrounded power system applications require special consideration due to the fact that there is no safe way to ground the system without inducing current, thus violating the National Electric Code (NEC) which states “ground is not to be an intentional current-carrying conductor”.

It is dangerous to allow current to flow to ground when intermittent faults, transient overvoltage occurrences, and short circuit problems can possibly create a dangerous condition for personnel. The issue becomes how to provide a ground reference necessary for control systems to properly operate without installing products that allow current to flow to ground, which could cause safety concerns and, should two phases connect to ground, a possible Arc Flash.


Phaseback VSGR, the trade name of a product created by Applied Energy LLC, provides a Stabilizing Ground Reference by monitoring the voltage on each phase with respect to ground and electromagnetically reacting at the instant an imbalance begins, thus maintaining proper power quality and a stable ground reference to ensure proper operation of control systems without interruption.



Phaseback VSGR’s voltage stabilizing ground reference addresses the following:

1) Arc Flash Mitigation
2) Arcing ground-faults
3) Voltage spikes from internal or external sources
4) Phase voltage imbalance
5) Phase Loss due to high impedance grounds
6) Phase angle differential
7) Phase voltage instability
8) Phase voltage harmonics
9) Waveform distortion
10) Noisy ground reference and frequency instability
11) Operational efficiency increases

To understand the operation of the Phaseback VSGR, the following explanation is necessary: Ohms Law for AC circuits states that Voltage equals Current multiplied by Ohms of Impedance, and, as the leading event, the voltage change offers the fastest reaction time when detected.

Phaseback VSGR operates very similar to a braking resistor, dissipating
the charge current in the power system through the resistor in the series secondary circuit to lower the capacitive energy to a non-damaging level, thus mitigating the arc flash potential.

The series circuits in Phaseback VSGR have the same current through the entire circuit; circuits with equal ohms of impedance and equal current will maintain equal voltage.

The transformers couple the primary and secondary circuits with magnetic lines of force. The secondary current of each transformer controls the primary current of that transformer and the voltage ratio is equal to the turns ratio in the transformer; the current ratio is at the inverse of the voltage ratio in the transformer.

Phaseback VSGR makes a three-phase wye connected transformer from (3) single-phase transformers. The center-tap or neutral of a wye-connected primary is connected to ground and the ungrounded single-phase secondary coils are connected in series with a large power resistor connected in series with those secondary coils.



The large power resistor limits current to protect the transformers from overload and the current through and voltage across the resistor are in-phase
(100% power factor). Harmonics are reduced and filtered through the resistor in the secondary as current circulates. The transformers are identical with equal secondary voltages and equal primary voltages. They are bi-directional, step-down and step-up and the phase voltages across each primary coil are equal when the power system is balanced and cause the secondary voltages in Phaseback VSGR to be equal.

During an imbalance on the power distribution system, energy from the secondary is sent back to the low voltage primary phase, and the positive feedback keeps the capacitive charge equal, causing the phase voltages on the power system to become stable.

Included in the Phaseback VSGR are two alarm points. The first point is located on the front of the panel; it is a ground fault indicating light. The second point is a secondary series circuit current detector with solid state (normally open) contacts that is factory set to alarm when 500 milliamps flow through the resistor. The early warning of the current detector provides maintenance the ability to correct the problem before a second fault forms, which can prevent multiple phases faulting through ground. This is a prime cause of arc flash.

For marine applications, we also recommend connecting a second current detector on the ground connection. This current detector is connected to the neutral point of the primary connection in the unit for protection in the event that the ground cable is cut or otherwise disconnected.

Spare part recommendations for the unit are minimal, with the only recommendation being a couple of additional GE755 light bulbs and an additional current detector.

Based on MTBF calculations shown below, the Phaseback VSGR should operate for decades without problems.


“Half-life” is a new word in our vocabulary and relates to the fact that for every 8 to 10 degree C increase in insulation temperature, its useful life will be cut in two. The original rule of thumb was 8 degrees, but in recent years technical writing generally refer to 10 degrees.

Insulation temperature rating of the transformers used in Phaseback is 180 degrees Celsius.

Typical operating temperature under 100 degrees Celsius extends the operational life to over 294 years. For every 10 degrees Celsius below rated temperature electrical equipment operates at,
its projected lifespan doubles.

This is a realistic life expectancy of the transformers used in each Marine Phaseback. The resistor is rated for a continuous operating temperature of 375 degrees Celsius. Operating below 100 degrees Celsius extends its life to excess of 275 years.

Taken from Square-D Dry Type Transformer Study Course (Bulletin I-1 (R1) 10M BP 4/91) Page 26.


Phaseback VSGR is the only surge protective device that can withstand the most powerful surges without damage to itself or anything it protects.

The laws of physics do not change, but our understanding of them does; Phaseback VSGR works on a fundamental electromagnetic principle that reacts at the speed of current flow, is shock proof, vibration proof and works in the harshest conditions.

Phaseback VSGR has a Lifetime Warranty and has proved itself in the market for the past 12 years. Used by industries, factories, and the military, Phaseback VSGR has saved billions of dollars worth of equipment, and has even saved lives.



A western Michigan Foundry was burning out fuses to the furnaces. After applying the Applied Energy solution no more premature fuse losses have been experienced eliminating downtime and product losses.

-Mid Michigan Automotive Manufacturing Plant, Michigan-

A manufacturer of Acoustical and Fire resistant materials in Indiana was experiencing the loss of at least one Variable Frequency Drive each month. With the Applied Energy solution added the facility has experienced zero losses since implementation saving equipment cost and downtime.

-Mid Michigan Automotive Manufacturing Plant, Michigan-

A plastic container plant for the food industry was experiencing the loss of the printer UV drying light after between 600 and 1000 hours of operation. Each of the lights cost six hundred dollars. After the Applied Energy solution the last time the lights were replaced was after 3500 hours.

-Mid Michigan Automotive Manufacturing Plant, Michigan-