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Power supply problems and solutions
Here you will find a detailed overview of the most common power supply problems and information on which Eaton UPS series covers which problem.
| Power supply problem | Definition | Cause | Single-phase UPS Series 3 | Single-phase UPS Series 5 | Single-phase and three-phase UPS Series 9 |
|---|---|---|---|---|---|
| 1. Failure of the power supply | Total failure of the supply network | Can be caused by a number of events: Lightning strikes, destroyed transmission lines, grid overload, accidents and natural disasters. | |||
| 2. Voltage dip | Short-term undervoltage | Triggered by the switching on of large consumers, switching operations in the supply network, failure of mains systems, lightning strikes and power supply systems that do not meet the requirements. In addition to possible device failures, hardware can also be damaged. | |||
| 3. Overvoltage peaks | Temporary overvoltage of more than 110 per cent of the nominal value | Can be caused by lightning strikes and can briefly raise the mains voltage to values of over 6,000 volts. A voltage spike almost always causes data loss or hardware damage. | |||
| 4. Undervoltage (voltage drop) | Reduced mains voltage for a period of a few minutes to a few days | May occur if the mains voltage is intentionally reduced to reduce power during peak consumption times or if the connected load exceeds the supply capacity. | |||
| 5. Overvoltage | Increased mains voltage for a period of several minutes to several days | Triggered by heavy load reduction, switching off large loads and other switching operations in the grid. Hardware can be destroyed as a result. | |||
| 6. Electrical interference signals | Interference signals with higher frequencies | Can be caused by spark interference (EMI) or radio frequency interference (RFI) from welding equipment, transmitters, printers, thunderstorms, etc. | |||
| 7. Frequency deviations | Unstable mains frequency | They are caused by load changes in generators, especially in smaller generator systems. Frequency deviations can cause faulty processes, data loss, system breakdowns and damage to devices. | |||
| 8. Peaks due to switching operations | Short-term voltage dips | The duration of such peaks is very short and is in the nanosecond range. | |||
| 9. Harmonic distortion (harmonics) | Distortion of the sinusoidal waveform, usually caused by non-linear loads | Switching power supplies, stepper motors, copiers and fax machines are examples of non-linear consumer loads. They can cause communication errors, overheating and hardware damage. |
Power supply problems and solutions
Here you will find a detailed overview of the most common power supply problems and information on which Eaton UPS series covers which problem.
| Power supply problem | Definition | Cause | Single-phase UPS Series 3 | Single-phase UPS Series 5 | Single-phase and three-phase UPS Series 9 |
|---|---|---|---|---|---|
| 1. Failure of the power supply | Total failure of the supply network | Can be caused by a number of events: Lightning strikes, destroyed transmission lines, grid overload, accidents and natural disasters. | |||
| 2. Voltage dip | Short-term undervoltage | Triggered by the switching on of large consumers, switching operations in the supply network, failure of mains systems, lightning strikes and power supply systems that do not meet the requirements. In addition to possible device failures, hardware can also be damaged. | |||
| 3. Overvoltage peaks | Temporary overvoltage of more than 110 per cent of the nominal value | Can be caused by lightning strikes and can briefly raise the mains voltage to values of over 6,000 volts. A voltage spike almost always causes data loss or hardware damage. | |||
| 4. Undervoltage (voltage drop) | Reduced mains voltage for a period of a few minutes to a few days | May occur if the mains voltage is intentionally reduced to reduce power during peak consumption times or if the connected load exceeds the supply capacity. | |||
| 5. Overvoltage | Increased mains voltage for a period of several minutes to several days | Triggered by heavy load reduction, switching off large loads and other switching operations in the grid. Hardware can be destroyed as a result. | |||
| 6. Electrical interference signals | Interference signals with higher frequencies | Can be caused by spark interference (EMI) or radio frequency interference (RFI) from welding equipment, transmitters, printers, thunderstorms, etc. | |||
| 7. Frequency deviations | Unstable mains frequency | They are caused by load changes in generators, especially in smaller generator systems. Frequency deviations can cause faulty processes, data loss, system breakdowns and damage to devices. | |||
| 8. Peaks due to switching operations | Short-term voltage dips | The duration of such peaks is very short and is in the nanosecond range. | |||
| 9. Harmonic distortion (harmonics) | Distortion of the sinusoidal waveform, usually caused by non-linear loads | Switching power supplies, stepper motors, copiers and fax machines are examples of non-linear consumer loads. They can cause communication errors, overheating and hardware damage. |
Power supply problems and solutions
Here you will find a detailed overview of the most common power supply problems and information on which Eaton UPS series covers which problem.
| Power supply problem | Definition | Cause | Single-phase UPS Series 3 | Single-phase UPS Series 5 | Single-phase and three-phase UPS Series 9 |
|---|---|---|---|---|---|
| 1. Failure of the power supply | Total failure of the supply network | Can be caused by a number of events: Lightning strikes, destroyed transmission lines, grid overload, accidents and natural disasters. | |||
| 2. Voltage dip | Short-term undervoltage | Triggered by the switching on of large consumers, switching operations in the supply network, failure of mains systems, lightning strikes and power supply systems that do not meet the requirements. In addition to possible device failures, hardware can also be damaged. | |||
| 3. Overvoltage peaks | Temporary overvoltage of more than 110 per cent of the nominal value | Can be caused by lightning strikes and can briefly raise the mains voltage to values of over 6,000 volts. A voltage spike almost always causes data loss or hardware damage. | |||
| 4. Undervoltage (voltage drop) | Reduced mains voltage for a period of a few minutes to a few days | May occur if the mains voltage is intentionally reduced to reduce power during peak consumption times or if the connected load exceeds the supply capacity. | |||
| 5. Overvoltage | Increased mains voltage for a period of several minutes to several days | Triggered by heavy load reduction, switching off large loads and other switching operations in the grid. Hardware can be destroyed as a result. | |||
| 6. Electrical interference signals | Interference signals with higher frequencies | Can be caused by spark interference (EMI) or radio frequency interference (RFI) from welding equipment, transmitters, printers, thunderstorms, etc. | |||
| 7. Frequency deviations | Unstable mains frequency | They are caused by load changes in generators, especially in smaller generator systems. Frequency deviations can cause faulty processes, data loss, system breakdowns and damage to devices. | |||
| 8. Peaks due to switching operations | Short-term voltage dips | The duration of such peaks is very short and is in the nanosecond range. | |||
| 9. Harmonic distortion (harmonics) | Distortion of the sinusoidal waveform, usually caused by non-linear loads | Switching power supplies, stepper motors, copiers and fax machines are examples of non-linear consumer loads. They can cause communication errors, overheating and hardware damage. |
Power supply problems and solutions
Here you will find a detailed overview of the most common power supply problems and information on which Eaton UPS series covers which problem.
| Power supply problem | Definition | Cause | Single-phase UPS Series 3 | Single-phase UPS Series 5 | Single-phase and three-phase UPS Series 9 |
|---|---|---|---|---|---|
| 1. Failure of the power supply | Total failure of the supply network | Can be caused by a number of events: Lightning strikes, destroyed transmission lines, grid overload, accidents and natural disasters. | |||
| 2. Voltage dip | Short-term undervoltage | Triggered by the switching on of large consumers, switching operations in the supply network, failure of mains systems, lightning strikes and power supply systems that do not meet the requirements. In addition to possible device failures, hardware can also be damaged. | |||
| 3. Overvoltage peaks | Temporary overvoltage of more than 110 per cent of the nominal value | Can be caused by lightning strikes and can briefly raise the mains voltage to values of over 6,000 volts. A voltage spike almost always causes data loss or hardware damage. | |||
| 4. Undervoltage (voltage drop) | Reduced mains voltage for a period of a few minutes to a few days | May occur if the mains voltage is intentionally reduced to reduce power during peak consumption times or if the connected load exceeds the supply capacity. | |||
| 5. Overvoltage | Increased mains voltage for a period of several minutes to several days | Triggered by heavy load reduction, switching off large loads and other switching operations in the grid. Hardware can be destroyed as a result. | |||
| 6. Electrical interference signals | Interference signals with higher frequencies | Can be caused by spark interference (EMI) or radio frequency interference (RFI) from welding equipment, transmitters, printers, thunderstorms, etc. | |||
| 7. Frequency deviations | Unstable mains frequency | They are caused by load changes in generators, especially in smaller generator systems. Frequency deviations can cause faulty processes, data loss, system breakdowns and damage to devices. | |||
| 8. Peaks due to switching operations | Short-term voltage dips | The duration of such peaks is very short and is in the nanosecond range. | |||
| 9. Harmonic distortion (harmonics) | Distortion of the sinusoidal waveform, usually caused by non-linear loads | Switching power supplies, stepper motors, copiers and fax machines are examples of non-linear consumer loads. They can cause communication errors, overheating and hardware damage. |
Power supply problems and solutions
Here you will find a detailed overview of the most common power supply problems and information on which Eaton UPS series covers which problem.
| Power supply problem | Definition | Cause | Single-phase UPS Series 3 | Single-phase UPS Series 5 | Single-phase and three-phase UPS Series 9 |
|---|---|---|---|---|---|
| 1. Failure of the power supply | Total failure of the supply network | Can be caused by a number of events: Lightning strikes, destroyed transmission lines, grid overload, accidents and natural disasters. | |||
| 2. Voltage dip | Short-term undervoltage | Triggered by the switching on of large consumers, switching operations in the supply network, failure of mains systems, lightning strikes and power supply systems that do not meet the requirements. In addition to possible device failures, hardware can also be damaged. | |||
| 3. Overvoltage peaks | Temporary overvoltage of more than 110 per cent of the nominal value | Can be caused by lightning strikes and can briefly raise the mains voltage to values of over 6,000 volts. A voltage spike almost always causes data loss or hardware damage. | |||
| 4. Undervoltage (voltage drop) | Reduced mains voltage for a period of a few minutes to a few days | May occur if the mains voltage is intentionally reduced to reduce power during peak consumption times or if the connected load exceeds the supply capacity. | |||
| 5. Overvoltage | Increased mains voltage for a period of several minutes to several days | Triggered by heavy load reduction, switching off large loads and other switching operations in the grid. Hardware can be destroyed as a result. | |||
| 6. Electrical interference signals | Interference signals with higher frequencies | Can be caused by spark interference (EMI) or radio frequency interference (RFI) from welding equipment, transmitters, printers, thunderstorms, etc. | |||
| 7. Frequency deviations | Unstable mains frequency | They are caused by load changes in generators, especially in smaller generator systems. Frequency deviations can cause faulty processes, data loss, system breakdowns and damage to devices. | |||
| 8. Peaks due to switching operations | Short-term voltage dips | The duration of such peaks is very short and is in the nanosecond range. | |||
| 9. Harmonic distortion (harmonics) | Distortion of the sinusoidal waveform, usually caused by non-linear loads | Switching power supplies, stepper motors, copiers and fax machines are examples of non-linear consumer loads. They can cause communication errors, overheating and hardware damage. |
Eaton UPS systems
Here you will find an overview of various Eaton UPSs.
If your desired series is missing, please use the search function or contact us.

Reliable UPSs from Eaton for protection against power failures
Eaton's UPS systems (uninterruptible power supply) protect you against data loss, production and system failures in the event of a power failure. The UPS solutions offer advanced functions and are suitable for various applications - from workstations to large data centres and critical infrastructures.
Are you unsure which UPS is right for you? In our UPS table you will find the various power supply problems and the respective solution.
Eaton UPS systems
Here you will find an overview of various Eaton UPSs.
If your desired series is missing, please use the search function or contact us.

Reliable UPSs from Eaton for protection against power failures
Eaton's UPS systems (uninterruptible power supply) protect you against data loss, production and system failures in the event of a power failure. The UPS solutions offer advanced functions and are suitable for various applications - from workstations to large data centres and critical infrastructures.
Are you unsure which UPS is right for you? In our UPS table you will find the various power supply problems and the respective solution.
Eaton UPS systems
Here you will find an overview of various Eaton UPSs.
If your desired series is missing, please use the search function or contact us.

Reliable UPSs from Eaton for protection against power failures
Eaton's UPS systems (uninterruptible power supply) protect you against data loss, production and system failures in the event of a power failure. The UPS solutions offer advanced functions and are suitable for various applications - from workstations to large data centres and critical infrastructures.
Are you unsure which UPS is right for you? In our UPS table you will find the various power supply problems and the respective solution.
Eaton UPS systems
Here you will find an overview of various Eaton UPSs.
If your desired series is missing, please use the search function or contact us.

Reliable UPSs from Eaton for protection against power failures
Eaton's UPS systems (uninterruptible power supply) protect you against data loss, production and system failures in the event of a power failure. The UPS solutions offer advanced functions and are suitable for various applications - from workstations to large data centres and critical infrastructures.
Are you unsure which UPS is right for you? In our UPS table you will find the various power supply problems and the respective solution.
Eaton UPS systems
Here you will find an overview of various Eaton UPSs.
If your desired series is missing, please use the search function or contact us.

Reliable UPSs from Eaton for protection against power failures
Eaton's UPS systems (uninterruptible power supply) protect you against data loss, production and system failures in the event of a power failure. The UPS solutions offer advanced functions and are suitable for various applications - from workstations to large data centres and critical infrastructures.
Are you unsure which UPS is right for you? In our UPS table you will find the various power supply problems and the respective solution.