Electrical monitoring solutions for data centers: 24/7 availability with constant power and fault current monitoring
The reliability of stored data in data centers depends on many different conditions, e.g. the use of energy and security of power. These conditions must be constantly monitored to achieve level of Tier 1 - 4. To support this, the most significant is to monitor combined power quality, energy and fault current detection.
Various studies have shown that mains power quality problems generate costs that run into the billions each year. Already in 2007, the Pan-European LPQI Power Quality Survey estimated that the damage was equivalent to 150 billion Dollars annually. Meanwhile, the challenges for everyone have continued to grow. And this is especially true for data centers.
When planning the energy supply of a data center, many requirements have to be taken into account:
Figure 1: Power quality simplified (Source: Camille Bauer Metrawatt AG)
Goal: Avoid downtimes, expensive production losses and unnecessary redundancies
Using investment intensive redundancies in data centers actually should avoid these malfunctions but because of adverse conditions caused from other users and asymmetrical loads, limit levels are regularly exceeded. That is why a permanent power quality monitoring is becoming more and more essential. Depending on the size of a data center it makes sense to monitor on the feed from the power company (point of common coupling or PCC), in all protected supply areas or at the feed of stand by power systems.
Figure 2: Residual Current Monitoring (Source: Camille Bauer Metrawatt AG)
Power Usage Effectiveness (PUE) is a technical key figure that has become an industry standard for reporting the energy efficiency of a data center. The PUE value determines the relationship between the total electrical energy consumed (total energy consumption) and the electrical energy consumed with regard to the IT infrastructure (server, storage, switches and more). This means that the PUE value is used to determine the efficiency of energy use within a certain period.
So, the PUE value puts the total energy expenditure of the data centers in relation to the energy consumption of the computer infrastructure, then with a theoretical PUE value of 1 the total power flows into it. In practice, values up to 1.2 are judged to be very efficient. That means 20 percent of the energy used is used ineffficiently. Besides the power usage effectiveness (PUE) there are standards which are getting more and more in focus, like the EN DIN 50600 and the TIA-942. Also the EU is now actively promoting Europe’s transition into a low-carbon society, and is updating its rules in order to facilitate the necessary private and public investment into the clean energy transition. Even during the World Economic Form Annual Meeting (2020) a Swiss Data Center Efficiency Label was announced with the initial goal to decarbonize data centers in Switzerland and significantly reduce their overall energy consumption.
Figure 3: Data Center (Source: Camille Bauer Metrawatt AG)
Monitoring of the following in e.g. the main distribution frame, the sub distribution frame, etc. up to the server rack of:
Goal: Your data center becomes more "green"
Power Quality analysis including energy and differential current monitoring. Using suitable current transformers/sensors pays off. All in one!
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The METRACELL BT Pro is a universal, portable and multifunctional test instrument for the evaluation and maintenance of battery systems and uninterruptible power supplies, which are based primarily on lead-acid accumulators.
We design modular customer-specific solutions and systems which can be extended at any time regardless of manufacturer. Through our non-proprietary interfaces also an integration in already existing applications and systems with components from different manufacturers is not a problem.
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