EPPE
The standard-compliant measurement of power quality ensures an objective and comparable assessment, which is essential for the diagnosis and elimination of power quality problems. Compliance with relevant norms and standards such as IEC 61000-4-30, -15 and -7 ensures that the measurements are accurate, reproducible and reliable.
In Europe, the power quality characteristics are evaluated in accordance with standards such as EN 50160 and IEC 61000-2-2 or -4. Other standards such as NRS048 for South Africa or FoL for Norway are also supported. An editor also enables the creation of evaluation rules for individual grid codes.
The results of the PQ measurement are documented in a standard-compliant report that contains all relevant measurement data, analyses and evaluations. This makes it possible to evaluate the power quality and identify any deviations from the limit values.
In addition to the standard-compliant evaluation of the power quality, the recording of the number and duration of short-term voltage events is a decisive feature for the quality and reliability of the power supply. These events, such as sudden load changes, switching operations, mains faults or lightning strikes, can disrupt or even damage connected devices.
The EPPE not only records the characteristics of voltage dips, voltage peaks (surges) and short and long-term interruptions, but also records their signature as an RMS value curve with a time resolution of one half-wave (T/2).
Thanks to the extremely powerful KoCoS hardware, the 10 recording instruments of the EPPE can be activated simultaneously without influencing each other.
User management using role-based access control makes it possible to restrict users to activities that correspond to their role and to protect the system from unauthorized access.
As an alternative to the system's own user administration, the EPPE system can be connected to external user management systems via the LDAP protocol. Naturally with redundancy and fallback level.
Highly encrypted data transmission makes a significant contribution to secure operation in critical infrastructure systems (KRITIS).
All security-relevant processes are logged. Among other things, user logins, configuration changes or updates are saved in the device. In addition, this data can be transferred to a central network monitoring server using the SYSLOG protocol.
Device firmware and all update files are digitally signed and encrypted to protect against manipulation by faulty updates or updates not approved by the manufacturer.
The EPPE is equipped with two independent fault recorder units that can record transients of a few µs.
The two fault recorders can be individually adjusted in terms of their sampling rate, recording length for pre-fault, fault and post-fault history, the recording criteria (trigger) and the downstream message chain and can therefore be adapted to different measuring tasks.
Up to four independent RMS continuous recordings can be parameterized in the EPPE, which can be executed simultaneously. Any measured values can be assigned to each recording. The interval times for averaging can even be assigned individually to each measured value.
This flexibility makes it possible to adapt the measurements to the specific requirements of different applications.
If EPPE is integrated into a communication network or is accessible via LTE/5G routers, the associated Expert software enables fully automated and database-based metering point operation with automated analysis and reporting.
Fault recordings are transmitted with priority and can be printed out or sent by e-mail as a report together with information on the type of fault, duration, maximum values reached, event log of the protection and switching device messages and details of the fault impedance and fault location.
Power quality reports are generated automatically or manually and can be provided in various data formats, which enables simple, fast and reliable assessment of the power quality.
The device can be accessed in parallel via two independent Ethernet interfaces. This means that EPPE can be accessed via two physically separate networks. These can be, for example, a highly secure internal station network and an external network for remote access.
Live measurement data can be viewed in any web browser via the integrated web server.
Third-party applications can be supplied with data via IEC 61850 and MODBUS TCP as well as via the device's internal (S)FTP server.
The triggered RMS(T2) recorder of the EPPE is specially designed to analyze slow changes such as grid oscillations or balancing processes. These can be caused, for example, by short circuits, load shedding, switching operations, generator failures or lightning strikes. Analyzing these processes is crucial for assessing and improving system stability and helps to detect and rectify potential faults at an early stage to avoid unplanned shutdowns.
The RMS recorder records important signals such as current and voltage amplitudes, frequency, unbalance, power values or impedances with a high temporal resolution of up to twice the grid frequency (T/2) and an event duration of up to 60 minutes.
Another task is to record transient faults that do not directly lead to grid shutdowns but can damage connected consumers in the long term or impair their function. By analyzing this data, sources of interference can be identified and the power quality improved.
A typical measurement task is the recording of actual grid faults, where an automatic fault analysis must be carried out immediately after recording and a fault report including fault characteristics, fault location calculation and event log of the associated protection and switch messages must be created and sent in order to be able to rectify the grid fault quickly and in a targeted manner.
Both application examples can be carried out simultaneously using the two fault recorder units of the EPPE. The recording duration of a disturbance recording can be up to 400,000 sampling points per channel, which corresponds to a recording duration of 40 seconds at 10 kHz or 400 seconds at 1 kHz recording rate, for example.
Stationary power quality monitoring system for panel mounting
Our EPPE CX is the ideal choice for fully automatic, permanent Power Quality and grid monitoring. Additionally, 16 digital inputs capture all reactions of the protection and switching devices involved, allowing grid faults and their entire chain of effects to be analyzed in a single recording. Live measurements and trends can be conveniently accessed in numerical or graphical form via the 5” touchscreen display. With its integrated alarm system, it informs you immediately in the event of irregularities
The portable power quality solution in a carrying case
For users who require mobility, our EPPE PX offers the perfect solution. The robust case can withstand harsh environmental conditions. With additional sensor inputs, direct current inputs and full galvanically isolated analog inputs, it offers maximum flexibility for mobile measurements and system monitoring.Portable device
Compact power quality meter and fault recorder for DIN rail mounting
Our EPPE RX is a high-precision power quality and power measurement analyzer for DIN rail mounting. With 8 channels, it measures 4 voltages and 4 currents at a sampling rate of 200 kHz. Compliant with VDE-AR-N-4110 and VDE-AR-N-4120, it is ideal for monitoring EEG systems in the medium and high-voltage grid
EPPE Benefits
Optimize your energy quality with precise measurements, reliable software and the highest safety standards. Our solutions help you to identify sources of interference, reduce energy costs and ensure compliance with international standards - flexible, user-friendly and future-proof.
Whatever your request, we‘re here for you.
Whatever your request, we are here for you! Just enter contact details and the subject of your request and we will be happy to get back to you personally.
Or e-mail to: info(at)kocos.com
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