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[All you need to know about UPS] Parallel redundancy

With a parallel redundant type UPS (Uninterruptible Power Supplies), you are fully prepared in the unlikely event of a UPS failure!

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A stable power supply is extremely important in the modern business environment. In particular, in places such as factories and data centers where an interruption in the power supply can have a significant impact, it is necessary to use Uninterruptible Power Supplies (UPS) as a countermeasure.
However, risk management in the unlikely event that the UPS itself fails can be a blind spot.

This is where the "parallel redundant type UPS" comes in. In this article, we will explain the basics of parallel redundant type UPS, its benefits, and our related series in detail.

1. What is a parallel redundant type UPS (Uninterruptible Power Supplies)?

A "parallel redundant system" is a system in which two or more UPS units with parallel operation function are connected in parallel, as opposed to a normal single-unit UPS, so that in the unlikely event that a UPS unit fails, the other UPS units can continue to supply power. This significantly improves the reliability of the power supply.

For example, by connecting three UPS units in parallel, even if one unit breaks down, the remaining two units can continue to supply power, improving the reliability of the entire system.

Parallel redundant system

2. Advantages of parallel redundant type UPS (Uninterruptible Power Supplies)

A parallel redundant type UPS not only provides reliability by protecting against the risk of the UPS itself failing, but also offers a variety of other benefits.

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Advantage 1: High reliability in case of UPS failure

By running two or more UPS Inverter units with parallel operation function in parallel, even if a UPS fails, the other UPS Inverter units can continue to supply power, significantly improving the reliability of the power supply.

Facilities where a power outage could cause severe damage, such as a factory's central monitoring system, instrumentation system, process computer, or server room, require a highly reliable UPS such as a parallel redundant type.

Advantage 2: Flexible capacity expansion

With a parallel redundant type UPS, you can increase the power supply capacity of the entire system by adding UPS units as needed. This allows you to flexibly respond to future increases in power usage. For example, even if your current power demand is 10kVA, if you need 20kVA in the future, you can respond by introducing an additional UPS unit.

Our units vary in capacity from 1kVA to 5kVA to 100kVA, so you can choose the optimum capacity for any situation.

Parallel redundant system

Advantage 3: Ease of maintenance

If the UPS is in parallel redundant operation, you can replace a UPS unit without stopping the power output. If the UPS has a maintenance bypass circuit, you can replace the unit during bypass operation, so there is no need to stop the equipment.

Power outage damage: time and money

3. Our parallel redundant type UPS (Uninterruptible Power Supplies) and recommended usage scenarios

SANYO DENKI CO., LTD. offers a variety of parallel redundant type UPS to suit your needs.

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"SANUPS A11N"

It has a capacity of 5kVA to 20kVA, and up to four 5kVA units can be combined.
It is possible to operate in parallel with one unit as a spare unit.

"SANUPS A11N-Li"

It has a capacity of 5kVA to 20kVA, and up to four 5kVA units can be combined.
Because it is a lithium-ion battery UPS, it has the following features compared to the lead-acid battery-based SANUPS A11N.

  • Long battery life (expected life 10 years *at 25℃)
  • Wide temperature range (operating environment: 0~55℃)
  • Space-saving and lightweight

In factories such as chemical plants, steel mills, semiconductor plants, pharmaceutical plants, and food factories where a power outage could lead to a serious accident, parallel redundant UPS are used to avoid the unlikely risk of a UPS failure. In addition, parallel redundant UPS using lithium-ion batteries are extremely useful for the following reasons:

  • There are many UPS units in the factory, and the labor required for battery replacement needs to be reduced.
  • Operate the UPS in a wide range of ambient temperatures
  • Limited space

We also recommend this article: A thorough comparison of UPS lithium-ion batteries and lead-acid batteries!

化学工場

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"SANUPS A11M"

It has a capacity of 1kVA to 8kVA, and up to eight 1kVA units can be combined.
Because the units have a small capacity, it is possible to configure a small-capacity system for a parallel redundant type, making this a rare type of UPS in the industry.

In addition, the UPS has the following features that make it suitable for use overseas:

  • Compliant with UL/CE/UKCA standards
  • Not only 100V models but also 200V models are available
  • Wide input power range
    (100V type is 55 to 150V, 200V type is 110 to 300V, input frequency range is 40 to 120Hz *When the load factor is less than 40%)
  • No need to worry about differences in outlet shapes due to the terminal block specifications

For this reason, the SANUPS A11M is highly valued for being incorporated into equipment used overseas and for providing power to production facilities overseas.

  • I want to prevent battery deterioration even when traveling abroad where the power situation is unstable.
  • Due to its small capacity, it can be easily incorporated into equipment
  • We want to avoid the risk of UPS failure in production facilities, etc.

We also recommend this article: Explaining precautions and safety standards when using UPS overseas!

海外

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"SANUPS A13A"

It has a capacity of 6.25kVA to 25kVA, and by combining 6.25kVA units, it can accommodate a wide range of power capacities.
As it is a three-phase type, it is suitable for factory equipment and production facilities.

"SANUPS E33A"

It has a capacity of 100kVA to 600kVA, and by combining 100kVA units, it can accommodate a wide range of power capacities.
This is a high-capacity, energy-efficient UPS that is suitable for situations with high power demands, such as large-scale factory equipment and production facilities.

We also recommend this article: Reduce your electricity bill by more than 3 million yen in 10 years by more than 50%!

『SANUPS A22A』

With capacities ranging from 5kVA to 105kVA, a wide range of power capacities can be accommodated by combining 5kVA units.
It also complies with CE/UKCA standards, making it suitable for use in a wide range of situations, including overseas.

We also recommend this article: Explaining precautions and safety standards when using UPS overseas!

If you have any requests such as "I want to prepare for the risk of a parallel redundant UPS in the unlikely event that the UPS itself breaks down," or "I want to choose a UPS that suits my company's environment," please feel free to contact us at any time. We look forward to hearing from you.

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[All you need to know about UPS] Parallel redundancy
With a parallel redundant type UPS (Uninterruptible Power Supplies), you are fully prepared in the unlikely event of a UPS failure!
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