FAQs

A.

Uninterruptible Power Supplies (UPS) are designed to automatically provide emergency power, without delay or transients, to critical applications in case of an interruption to, or unacceptable condition of the mains/utility supply. Some UPSs also filter and/or regulate mains/utility power.
A UPS contains three basic components, a battery, a charger and an inverter.

A.

Installing an uninterruptible power supply (UPS) could be the first step to protect your business and critical systems from power outage, but installing a UPS may not be sufficient to ensure continuity.

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A continuous maintenance with HIGH AVAILABILITY MAINTENANCE MODEL is needed, this type of maintenance is the most demanding and exhaustive model of them. It is applied to that equipment that under no circumstances may suffer a breakdown or malfunction. These are equipments to whom are also required very high levels of availability, above 90%. The reason for such high level of availability is generally high cost in production due to a fault. With a demand so high, there is no time to stop the equipment if the maintenance requires it (corrective, preventive, systematic).

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A.

The UPS continuous maintenance will have the following :

1. Weekly maintenance.( Routine check, tracking record & forecasting)
2. Quarterly maintenance.
3. Semiannually maintenance.
4. Annually maintenance.

A.

This maintenance will include and not limited for the following activities:
• Visual inspection of the UPS & Listening tests
• Main components visual check
• Check of environment, temperature, dust, moisture, room vents,….
• Take all measurements from the UPS controller (Input & output voltage, current, frequency, ... ).
• Check the history indicated alarms from the UPS controller
• Tracking record & forecasting coordinates with our software data base system.

A.

This maintenance will include and not limited for the following activities:

• Visual inspection of the UPS & Listening tests
• Main components visual check
• Check of environment, temperature, dust, moisture, room vents,
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A.

This maintenance will include and not limited for the following activities:

• Visual inspection of the UPS & Listening tests
• Main components visual check
• Check of environment, temperature, dust, moisture, room vents,
• Take all measurements from the UP controller (input & output voltage, current, frequency…..)
(more…)

A.

This maintenance will include and not limited for the following activities:

• Visual inspection of the UPS & Listening tests
• Main components visual check
• Check of environment, temperature, dust, moisture, room vents,
• Take all measurements from the UP controller (input & output voltage, current, frequency…..)
• Check the history indicated alarms from the UPS controller
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A.

The most common design approaches are the following:
1- Standby
2- Line Interactive
3- Standby on-line hybrid
4- Standby-Ferro
5- Double Conversion On-Line
6- Delta Conversion On-Line

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A.

BMS means different things for different people. For some, it is easy battery monitoring, taking a review of the main operating parameters during charging and discharging such as voltages and currents and the battery's indoor and ambient temperature. The monitoring circuits would normally provide inputs for protective devices that would generate alarms or disconnect the battery from the load or charger, should one of the parameters be outside the limits.

For engineers the battery is the last line of defense against a power failure. BMS systems include not only the monitoring and protection of the battery, but also methods to keep them ready to deliver full power when called, and methods for extending their life. This includes everything from the control of the loading process to the planned maintenance.

There are three main objectives common to all Battery Management Systems
1- Protect the battery from damage
2- Extend the life of the battery
3- Maintain the battery in a condition so that it can comply the functional requirements of the application for which it was specified.

A.

The UPS will protect against the following problems:
1- Blackout / Power Cut: this will happen in case of main is out.
2-Brownout: this will happen in case of overload.
3-Noise: this will happen in case of lightning of generators
4-Spike: In electrical engineering, spikes are fast, short duration electrical transients in voltage
5-Power Surge: this will happen when a dramatic increase in voltage caused by household devices

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A BMS may protect its battery by preventing it from operating outside its safe operating area, such as:
1- Over-current (may be different in charging and discharging modes)
2- Over-voltage (during charging)
3- Under-voltage (during discharging), especially important for lead–acid and Li-ion cells
4- Over-temperature
5- Under-temperature
6- Over-pressure (NiMH batteries)
7- Ground fault or leakage current detection (system monitoring that the high voltage battery is electrically disconnected from any conductive object touchable to use like Panel body).

The BMS may prevent operation outside the battery's safe operating area by:
Including an internal switch (such as a relay or solid state device) which is opened if the battery is operated outside its safe operating area
Requesting the devices to which the battery is connected to reduce or even terminate using the battery.
Actively controlling the environment, such as through heaters, fans, air conditioning or liquid cooling

A.

An UPS Maintenance without tracking records & Forecasting is worthless.

Keeping equipment at optimum working condition minimizes the risk of having unscheduled downtime. If maintenance is needed, it's important to keep a comprehensive record - whether scheduled or unscheduled - to help you understand the importance of your equipment’s upkeep works.

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