Application in the data centers
Data centers require a continuous power supply and exceptional reliability. At the same time, electricity costs represent a considerable proportion of operational costs for data centers. Operators have to optimize energy costs, reduce CO2 emissions whilst maximizing operational efficiency.
The UMG 800 can help implement accurate monitoring of energy consumption at all levels in modern data centers. The UMG 800 plays a central role particularly in feeder measurements on power distribution units (PDUs) and remote power panels (RPPs).
Feeder measurements
The challenge
The servers and racks which are supplied by the PDUs and RPPs are the heart of a data center. Disturbances to energy supply would be fatal here. Furthermore, precise energy consumption data is required for various key performance indicators, such as high resolution PUE3, which means measurement technology must be used. However, extensive equipping with measurement technology for monitoring all server racks can quickly become very expensive and complicated.
Solution
The data center decided to carry out feeder measurements with the modular UMG 800 energy analyzer. The measurement device can be extended using modules up to 96 current measurement inputs, via which a maximum of 32 measurement groups can be created. Neutral conductor currents can already be calculated in the device via virtual meters.
This means it is possible to record up to 32 outputs simultaneously with just one measurement device and 5 modules. This ensures a lower price per measurement channel whilst saving space in the distributors.
The data center can monitor energy flows in PDUs and RPPs and create reliable key performance indicators.
Measurement groups
Create and combine measured values for 3- and 4-phase applications efficiently and in virtual terms – without additional hardware. The use of virtual parameters means you can reduce hardware costs considerably by reducing the number of required physical devices whilst also ensuring maximum efficiency in your processes.
Reduced costs and simplified monitoring mean more efficient energy management without additional hardware costs.
Space and cost savings
The different modules enable significant space and cost savings whilst also ensuring a lower price of measurement channels for the user.
Both the 800-CT24 module and the 800-CT8-LP module use low power technology. Due to the low voltage signal on the secondary side, it is possible that the transformer disconnect terminals are no longer required, meaning that much space is saved particularly for a high number of measurements. In addition, low-power current transformers are usually more accurate than conventional transformers. At the same time, low-power current transformers are more cost-effective than conventional transformers, which lowers the total costs of the solution together with simple installation.
Trouble-free operation
Challenge
Thousands of servers run around the clock in a data center. Even the most minor faults can lead to serious downtime and interrupt operations. This is why the network must be continuously monitored and checked for any faults.
Solution
The data center uses the UMG 800 in different positions in the network to monitor the power quality. With a sampling frequency of 51.24 kHz and 1024 sampling points, the energy analyzer can detect even the slightest deviation in the measurement circuit in only 10 milliseconds.
The half-wave effective values are recorded in real time and critical events are identified immediately. The data center receives immediate warnings and in-depth analyses so that the technical team can immediately initiate measures before such matters result in downtime or damage to the infrastructure.
Accurate monitoring of events and transients protects the servers and data, ensures continuous operation and minimizes the risk of expensive downtime. Continuous monitoring of the power supply means the data center’s performance remains stable and reliable, which is of paramount importance for the success and safety of today’s data-driven world.
Measuring accuracy
Due to the high sampling rate of 51.24 kHz, 1024 samples, the UMG 800 can also detect the most minute deviances such as overvoltages or undervoltages that may jeopardize IT infrastructure. Events and transients are recorded and reported with an accuracy of 18 µs. Together with the flexible threshold values, this allows for realtime monitoring of voltage transients and events.
Network analysis
The UMG 800 records harmonics up to the 63rd Harmonic current and also identifies network faults such as overvoltages, undervoltages or unbalances and flickers. Accurate recording of waveforms enables operators to accurately analyze the causes of network faults, then quickly resolve them.
Further highlights for data transmission
Modbus TCP/IP gateway for up to 31 modbus RTU slaves
The UMG 800 as a gateway enables up to 31 additional devices to be integrated into the system, making monitoring and controlling simpler. This provides a better overview and simpler data exchange whilst reducing the complexity of device integration and improving network performance.
Modbus white listing
Modbus white listing is key to improving operational safety and ensuring that data integrity is protected. This function makes it possible to monitor data traffic and only ensure that approved devices and communication requests are granted access whilst potentially hazardous or unauthorized accesses are blocked.
Data memory
The 4 GB internal memory allows for critical measurement data to be saved, including 200 ms min/max values. This is particularly important so that load peaks can be detected quickly, preventing costly downtime. Gridded average values and sliding mean values mean long-term trends can be detected at an early stage, helping with preventative maintenance and optimization of energy consumption.
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