We Value Quality

QUALITY ELECTRIC SALES AND SERVICE is now Electrical Apparatus Service Association (EASA) Accredited.

Our dedication to producing the highest quality workmanship was recently validated by an independent auditor who determined that QESS team is committed to excellence.

EASA guidelines represent the industry’s Best Practices having been developed over decades by experts in the field of motor/generator service and rewinding.

By incorporating EASA quality management system into our procedures in combination with STOW, Quality Electric Sales and Service is reinforcing its ability to consistently produce the best value for our customers.

Quality Electric Sales and Service is the first and only Accredited electrical motor/generator repair facility in the Caribbean, managed to meet the highest standards obtainable.

Test Panel- High Voltage

Doing the job right the first time is guaranteed by utilizing our experienced and certified technicians, high quality materials and modern equipment combined with our documented system of quality checks, which are utilized from start to finish to ensure consistent high standards of workmanship.

Consistently producing quality workmanship is key to our success. Each phase of repair is carefully inspected and tested to ensure we obtain the high standards our customers deserve.

Test running the motor utilizing one of Trinidad’s only high voltage test panel is the final and most critical test to ensure performance meets original manufacture specifications.

Our Test Set has variable voltage settings from 120 VAC to 4160 VAC, and For D.C. electric motors, the Test Set is capable of testing motors up to 750 VDC at 200 Amps D.C.

The Test Set is complemented by a solid Test Bed for securing all electric motors under test to ensure that vibration readings are accurate, and it also supplies operator safety during the test run.

Impedance Testing

Quality Electric Sales and Service implements Impedance testing as a standard in repair procedure.

Not testing Rotor circuits of Electric Motors after repairs can be costly in time and money as the defects would be discovered after rewinding is complete.

The Rotor circuit comprises of 50% of Electric Motor integrity and the common practice of Visual inspection only is insufficient to detect possible electromagnetic faults. Other common practices of growler tests for broken/open Rotor Bars, are also ineffective as the Growler is too small to detect any broken/open Rotor Bars.

Impedance Tests are the only effective way to test squirrel cage Rotors for broken/open Rotor bars, as it utilises the Stator windings to induce 30% of rated voltage to the Stator, consequently magnetising the Rotor which will indicate possible broken/open Rotor Bars.

Conducting Impedance Tests avoids scenarios of Customers having further costs to repair a defective Rotor after rewinding and repair costs were already incurred as part of repairing the initial problem for which the motor was brought in.

Another demonstration to our Customers that QESS continuously upgrades and improves our process, to ensure higher quality standards.

Motor Multi-meter – diagnostic instrument for testing rotors, measure winding impedance, inter-tern winding faults.

We back up our work with one of the countries longest warranty. We are fully insured against damage to, loss or theft of your equipment while it is in our possession.

Core Loss Testing

“Core Loss is a Waster of Energy and Destroyer of Motors.”

At Quality Electric Sales and Service Ltd. we test every electric motor we repair for core loss. Electric motor cores are primarily made of thin silicon steel alloy laminations (stacks), which greatly strengthen and increase the effect of magnetic fields inside the motor. Studies have shown that core loss is the first or second leading cause of energy waste in rewound motors, and can account for 25% or more of motor inefficiency.

Core losses results from physical damage such as:

– Physical contact between rotating parts and the core
– ‘Grounds’ where the windings have arced and blown holes in the core
– Overheating during use or burnout of old windings (QESS uses burnout oven to gently remove old windings).

Core loss, dissipated in the form of heat, further degrades the core, causing greater core loss and more heat – a vicious cycle of rising operational inefficiency leading to premature motor failure. Motors that have failed and are not core tested often experience repeat failures.

EASA’s Guidelines for Maintaining Motor Efficiency During Rebuilding require motor repairers to “Conduct a stator core test before and after stripping [the winding].” Testing before stripping avoids wasting time and money on a core which should be replaced, and verifies that stripping did not damage the core.

Core loss testing is the only method of determining if a motor is capable of operating at rated efficiency after rebuilding, which is why Quality Electric Sales and Service tests every motor we repair with our calibrated and computerized Lexseco core loss tester. The tester indicates the condition of core steel by measuring the watts of energy lost per pound when the core is excited to operating conditions.

Save money and avoid motor failure by having your motors core tested before and after each service. For a complete computerized report on the condition of your electric motor including core loss test results, send your motors to Quality Electric Sales and Service the only electric motor repair facility in Trinidad with a core loss tester.

Impedance Testing

Quality Electric Sales and Service implements Impedance testing as a standard in repair procedure.

Not testing Rotor circuits of Electric Motors after repairs can be costly in time and money as the defects would be discovered after rewinding is complete.

The Rotor circuit comprises of 50% of Electric Motor integrity and the common practice of Visual inspection only is insufficient to detect possible electromagnetic faults. Other common practices of growler tests for broken/open Rotor Bars, are also ineffective as the Growler is too small to detect any broken/open Rotor Bars.

Impedance Tests are the only effective way to test squirrel cage Rotors for broken/open Rotor bars, as it utilises the Stator windings to induce 30% of rated voltage to the Stator, consequently magnetising the Rotor which will indicate possible broken/open Rotor Bars.

Conducting Impedance Tests avoids scenarios of Customers having further costs to repair a defective Rotor after rewinding and repair costs were already incurred as part of repairing the initial problem for which the motor was brought in.

Another demonstration to our Customers that QESS continuously upgrades and improves our process, to ensure higher quality standards.

Motor Multi-meter – diagnostic instrument for testing rotors, measure winding impedance, inter-tern winding faults.

We back up our work with one of the countries longest warranty. We are fully insured against damage to, loss or theft of your equipment while it is in our possession.

Quality Electric Sales & Services is a recognized as an approved service centre by: