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What is Power Quality

Power Quality is the quality of the electric power supplied to electrical equipment. Poor power quality can result in misoperation of the equipment. There are many ways in which a power feed can be poor quality and so there is no single way to completely quantify the quality of a power feed

What are the symptoms of dirty power?

Computer Freeze-ups, Data Loss, Device Adapters Run Hot, Machinery Resets or Locks Up for No Apparent Reason, Relays and Circuit Boards Burn, out Much Too Frequently, Audio System has Hissing Noise, Video has Unwanted Lines and Flicker, Public Address System Crackles, Light Bulbs Constantly Burn Out. Fluorescent Lights Hum, Digital Clocks Need Resetting after a Simple Power Flicker, Abnormal Power Consumption

Why Power Protection?

Power quality problems – come in any sorts of shapes and sizes. Actually, a very small percentage of the power problems you experience are the fault of the electrical utility company. The most common type of power problem is magnified by loose connections within the facility unstable frequency from Generator Sets, poor grounding of equipment, lightning hits, or use of certain types of equipment such as welders, elevators, copiers, etc

No facility has perfect power quality. In fact, within today‘s increasingly complex electrical systems, power quality is an often overlooked and costly element. There is a widely held myth that poor power quality has no cost, so long as there are no obvious, clearly seen manifestations, such as tripping breakers, burning of equipment or electronics, or erratic production operations. In fact, the same variations from perfection of voltage, frequency, and current supply that cause these problems when present in sufficient magnitude also cost money when at smaller, less obvious values, even if there are no overt “problems.” Electronic and motor loads are regularly damaged and affected by poor power quality, and create the greatest costs. Unwanted variations in voltage or frequency cause cumulative wear in both types of loads. A weak current source starves these loads of power and creates over-hot operation, which leads to premature failure. Motors are silent witnesses to the cumulative effect of poor power quality. Because of their long operating lifetimes, motors are usually just replaced or repaired as they fail, and the cause of the failure is often not diagnosed. Poor power quality issues can cut motor lifetimes in half. Would you like to double the operating life of your motors?

What is Over Voltage?

Over voltage conditions are steady-state RMS voltage variations above limits (say plus 10 percent of nominal equipment voltage) for longer than 2.5 seconds. Over voltage conditions cause electronic component heating with the potential for immediate or future component failure through overstressing. If this heating effect causes enclosure temperature to rise above the safe limit the system may shut down.

What is BrownOut / Under Voltage?

Any variation in A/C voltage that is below normal established limits for longer than 2.5 seconds. Causes erratic operation of equipment, power shutdown, output errors, and motors run “hot”.

What are drop outs and line interruptions?

Complete power failures that can last anywhere from a fraction of a cycle up to hours or days. Computer-based equipment will usually shut down automatically if the A/C voltage supply drops to zero for more than a few milliseconds.

What is Harmonics?

Periodic wave distortion and multiple frequencies causing over heating, component damage, erratic operation, poor control and telecommunication disruption.

What is Noise?

Signals that are embedded or overlaid onto incoming power. These signals take the appearance of fuzz or scribble on a power waveform. Fuzz or scribble can be interpreted as data when it passes through a processor of electronic equipment causing contamination of instructions. In most cases noise will not cause physical damage to equipment. However, noise can cause equipment to malfunction and result in a loss of data.

What is a Voltage Sag?

A sag or dip is a decrease in rms voltage or current at the power frequency for durations from 0.5 cycles to 1 minute, reported as the remaining voltage. Typical values are between 0.1 pu and 0.9 pu.

What is Powermatic?

Powermatic is an electronic device designed to be connected between Mains supply and equipment in order to prevent disturbances occurring to the supply from reaching the connected equipment and thus keeping it safe.

What are the differences between Powermatic and surge protectors?

Powermatic provides protection from Over Voltage, Under Voltage, Under Frequency, Sag & Swell. Surge protector does not. Powermatic disconnects the supply if disturbances occur; surge protector clamps only the surge without disconnecting. Powermatic indicates power status through LED indicators, surge protector not.

What are the differences between Powermatic and stabilizers?

Powermatic has the concept of Voltage protection, while Stabilizer works on the basis of voltage regulation.

Powermatic has fast response within one cycle, of the electrical supply, stabilizer responses slow, thus not suits sensitive equipment. Powermatic protects from over/ under voltage, stabilizer has a limited protection from over/under voltage.

Consumer Solutions

Powermatic is not working and all LED lights are off

– Ensure that Powermatic is properly connected to the main socket. For P20 and CU products, ensure the proper connection of plug. Refer to the instruction manual for the connection method

– Possible that there is no power in the main socket. Check the power in the main socket through any of the following:

– Connect directly your equipment to the main socket. If it will not work, then it means there is no power in the main socket. In this case, connect Powermatic to another main socket

– Check the supply in the main socket by test meter / voltmeter

Powermatic has green LED but the equipment connected is not working

– Ensure that your equipment is properly connected to Powermatic. Refer to the instruction manual for the connection method

– The problem may be with the equipment. Confirm through any of the following:

– Connect your equipment directly to the main socket. If it will not work, then there is a problem with your equipment

– Connect other equipment to Powermatic to check if it will work

Powermatic has all the LEDs lighted up but is not working when connected to the equipment

– Check the load current of the equipment connected to Powermatic. If the load is more than the specified load current as stated in the specification of Powermatic, then it is overload which is a sign of misuse of product. Refer to the product specification in this site to confirm the max. load current for your type of Powermatic

– If the load current of equipment connected to Powermatic is within the allowable load:

– ensure that Powermatic is properly plugged-in to the main

– socketcheck if there is power supply in the main socket through any of the following:

– connect directly your equipment to the main socket. If it will not work, then it means there  is no power in the main socket. In this case, connect Powermatic to another main socket

– check the supply of the socket by test meter / voltmeter

Light shifted from Green LED to Red / Yellow LED at the time of connecting the equipment

– Observe the shift of light after the connection of equipment. If there is shift of light from yellow to green LED and the equipment works normally, then there is no problem. This is normal in the operation, for Powermatic cuts the bad power and reconnects only if power is good

– The power voltage may be in a critical point, where the voltage is between acceptable and under voltage causing the green LED to light for a few seconds or directly turned off, and then shift of light to yellow LED

Only the Powermatic Red LED is lit up

It is possible that there is problem with the power supply. Check if the power in the main socket is good through any of the following:

– Check if there is any loose or bad contact between the supply socket and Powermatic by testing the Powermatic in another socket. if it is ok, then you must change or check the socket

– Check the supply of the main socket by test meter / voltmeter

The equipment connected to Powermatic takes a long time to gain power

– Observe the shift of LED lights . If there is shift of light from Yellow to Red LED, then it means that the power is bad. This is normal in the operation, for Powermatic cuts the bad power and reconnects only if power is good. Refer to the instruction manual for the normal delay time of each product during stable power supply

– Ensure also that Powermatic is properly plugged-in to the main socket to avoid the cut of power

– The power supply voltage maybe in a critical point, which means that the voltage is between good and bad state causing the Yellow LED to light for more than the exact delay time for each model

CU and P20 cable wires are connected properly to the plug but it is not operational

– Check the fuse of the plug using tester. If damaged, replace the fuse

– Check the circuit breaker if it is off

– Check if there is power supply in the main socket through any of the following:

– Connect directly your equipment to the main socket. If it will not work, then it means there is no power in the main socket. In this case, connect P20/CU to another main socket

– Check the supply in the main socket by test meter / voltmeter

Delay time for Powermatic P20C series varies

– This is not a problem. This is a smart-timer feature of P20C which ensures minimum 3 minutes as delay time to avoid breakdown of cooling compressor and motor due to the immediate starting after short power interruption. For example, if the interrupted duration is 1 minute, P20C reconnects the power within 2 minutes; reconnects within 1 minute in case of 2 minute interrupted duration, but keeps a minimum delay time of 30 seconds

– If the yellow indicator (LED) light for more than 3 minutes, it means that the power supply voltage is in a critical point, where the voltage is between good and bad state causing the Yellow LED to light for more than the exact delay time for each model

Other problems

If still face problems upon following the troubleshooting tips, report your concern to the shop where you bought Powermatic

Industrial Solutions

Powermatic is not working and all LED lights are off

– Ensure that Powermatic is properly connected to the 3-Phase supply

– Ensure there is no loose wire connection. Check by slightly pulling the wires

– Possible that there is no power in the 3-Phase supply line. Check the power supply through any of the following:

– Connect directly your equipment to the 3-phase supply. If it will not work, then it means there is no power in the supply line. In this case, connect Powermatic to another 3-phase supply line

– Check the 3-phase supply by test meter / voltmeter

Powermatic has green LED but the equipment connected is not working

– Ensure that your equipment is properly connected to the contactor with Powermatic. Refer to the instruction manual for the connection method

– Ensure there is no loose wire connection especifically the wires connected to the contactor. Check by slightly pulling the wires

– The problem may be with the contactor

– The problem may be with the equipment. Confirm through any of the following:

– Connect your equipment directly to the 3-phase supply line. If it will not work, then there is a problem with your equipment

– Connect other equipment to contactor with Powermatic to check if it will work

Powermatic has all the LEDs lighted up but is not working when connected to the equipment

– Check the load current of the equipment connected to Powermatic. If the load is more than the specified load current as stated in the specification of Powermatic, then it is overload which is a sign of misuse of product. Refer to the product specification in this site to confirm the max. load current for your type of Powermatic

– If the load current of equipment connected to Powermatic is within the allowable load:

– ensure that Powermatic is properly connected to the 3-Phase supply and contactor

– check if there is power supply through any of the following:

– connect directly your equipment to 3-Phase Supply line. If it will not work, then it means there

– check the 3-Phase supply of by test meter / voltmeter

Light shifted from Green LED to Red / Yellow LED at the time of connecting the equipment

– Observe the shift of light after the connection of equipment. If there is shift of light from yellow to green LED and the equipment works normally, then there is no problem. This is normal in the operation, for Powermatic cuts the bad power and reconnects only if power is good

– The power voltage may be in a critical point, where the voltage is between acceptable and under voltage causing the green LED to light for a few seconds or directly turned off, and then shift of light to yellow LED

– Ensure there is no loose wire connection. Check by slightly pulling the wires

Only the Powermatic Red LED is lit

– Ensure that Powermatic is properly connected to the 3-Phase supply line. Refer to the instruction manual for the connection method. * For P314, check the wire connection of the Line with Red Lights-On. If the Red LED of Reverse lights-up, there is wrong connection of line wires. Correct the connection.

– Ensure there is no loose wire connection. Check by slightly pulling the wires

– It is possible that there is problem with the 3-Phase power supply. Check if the supply is good through any of the following:

– Connect the Powermatic to another supply line. if it is ok, then you must change or check the other supply line where Powermatic has only Red LED lights-up

– Check the 3-Phase supply by test meter / voltmeter

The equipment connected to Powermatic takes a long time to gain power

– Observe the shift of LED lights . If there is shift of light from Yellow to Red LED, then it means that the power is bad. This is normal in the operation, for Powermatic cuts the bad power and reconnects only if power is good. In a stable power supply, the delay time for P304 is 30 seconds and for P314 , the delay time is presetable from 0.5 to 12mins

– Ensure there is no loose wire connection. Check by slightly pulling the wires

– The power supply voltage maybe in a critical point, which means that the voltage is between good and bad state causing the Yellow LED to light for more than the exact delay time for each model

Keeping Powermatic safe and clean

– For safe usage, do not expose to moisture

– Do not exceed the maximum load

– For cleaning, disconnect Powermatic from the main supply and wipe the box surface with dry cloth

Other problems

If still face problems upon following the troubleshooting tips, report your concern to the shop where you bought Powermatic

Harmonics
Any nonlinear load will be a source of harmonics. Power electronic devices, such as rectifiers, inverters, UPS systems, static var compensators, etc are such nonlinear load. Other sources are electric discharge lamps, arc furnaces and arc welders.

Interruptions
Total loss of power for some period of time. Outages are caused by excessive demands on the power system, lightning strikes and accidental damage to power lines. In addition to shutting down all types of electrical equipment, outages cause unexpected data loss

Momentarily Interruption
Complete loss of voltage for 30 cycles to 2 seconds. Other interruptions are categorized as instantaneous, temporary, or sustained, depending on duration range.
-Instantaneous 0.5 to 30 cycles.
-Temporary 2 secondsto 2 minutes
-Sustained greater than 2 minutes

Over Voltage
A sustained rise of voltage around 110 -120% of magnitude for more than 2 minutes. Over voltage is commonly caused by large electrical load changes and from utility power line switching.

Response Time
Used to describe how quickly tile surge protective circuitry will begin to clamp or suppress the surge.Spark due to Loose Connection
Loose wiring connections at outlets or switches, broken wires, or shorted wires cause often electrical fires. Arcing at the point of faulty contact may cause sparks that can jump to ignite combustible material. Furthermore, heat generated by loose contacts can deteriorate the insulation thus exposing the wires and resulting in intermittent short circuits between conductors

Spike / Surge
Voltage surge is a rise that may be nearly instantaneous (spike) or takes place over a longer duration (surge). Surges can occur during storms, or when large electrical loads such as air conditioners, refrigerators, and dishwashers turn off. Surges can cause computer memory loss, bit errors in data transmission, power supply damage, and erratic telephone switching system performance

Under Voltage
A sustained decrease of voltage around 0.8 -90% of magnitude for more than 2 minutes.

Voltage Sag
A decrease of voltage, typically lasting from a cycle to a second or so, or tens of milliseconds to hundreds of milliseconds. Sags are caused by abrupt increases in loads such as short circuits or faults, motors starting, or air conditioners turning on.

Under Frequency
Frequency variations occur commonly in small isolated networks, due to faulty or maladjusted governors, or where a single generator is the only power source; an overload of the generator will lead to frequency variation.