APLUS The system for heavy-current analysis
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• System state acquisition • Monitoring unit • Remote control and maintenance • Universal process I/O • Open communication • Energy management • Data display • Monitoring operating resources • Data recording • Power quality analysis APLUS The system for heavy

One device series – A variety of functions The APLUS is a powerful platform for measuring, monitoring and analyzing power systems. The focus is on highest Swiss quality and maximum customer benefit. This universal measurement device is available in three major versions: With TFT or LED display or in top hat-rail version without display. It can be easily integrated into the process environment on site. It provides a wide functionality, which may be further extended by means of optional components. The connection of the process environment may be performed by means of the communication...

The measurement system The APLUS can be adapted fast and easily to the measurement task by means of the CB-Manager software. The universal measurement system of the device may be used directly for any system, from single phase up to 4-wire unbalanced networks, without hardware modifications. Independent of measurement task and outer influences always the same high performance is achieved. The measurement is performed uninterrupted in all four quadrants and can be adapted to the system to monitor in an optimal way. The measurement time as well as the expected system load can be parameterized....

Energy management The APLUS provides all functions needed to collect fast and efficient load data for an energy management system. A system composed of APLUS devices promises maximum accuracy and highest performance for each individual measurement point when used in power distributions. It can satisfy the following basic requirements: • Recording load curves (Energy consumption over time) • Acquisition of energy consumption summaries • Automatic meter readings (calendric) • Peak-load monitoring • Trend analysis of present demand • Load switch-off to prevent penalties An energy optimization...

Power quality analysis instead of failure analysis In the world of standards the quality of a grid is defined using statistical deviations from a desired standard behaviour. But what’s really needed when monitoring power quality is a statement if the used operating resources will work undisturbed under the real existing conditions. The APLUS therefore does not work with statistics, but examines the real environment, to allow performing a corresponding immunity analysis. Almost all important aspects of power quality can be investigated and interpreted. Variation of the system load The...

Operating behavior monitoring Monitoring service intervals Many operating resources must be maintained regularly. Their service intervals often depend also on the prevailing operating conditions. For monitoring these intervals three operating hour counters are provided, which by means of limit values, digital feedback signals or a suitable combination of the same may be used to determine the • loads operating time under normal conditions • loads operating time under overload conditions Another operating hour counter is used to measure the time the APLUS itself has been switched on....

• Clear and explicit display of measured data • Free composition of measurement displays • Alarm handling • Device configuration • Reset of minimum / maximum values • Reset of meter contents • Free definable plaintext display for alarming • Preference display and roll mode You may select optionally either a TFT or LED display for on-site data visualization. The TFT color display mainly focus on modern design, graphical analysis and language specific operation, whilst the LED display offers excellent readability, even from a distance and almost every angle. Both displays are operated via...

Free composition of the required functions option I/O extension 1 2 relays, 4x ±20 mA, 2 digital I/Os or option I/O extension 2 1 digital input, 1 S0 output standard 2 relays, 6 digital I/Os option Data memory (SD-Card) Relay output Ethernet (Modbus/TCP) Profibus (DP) Measurement inputs option option Possible application of the I/Os Relay outputs • Alarming via lamp or horn • Load shedding • Remote controllable via bus interface Analog outputs • Connection to PLC or another measurement system (e.g. CAM). • All outputs are bipolar (±20 mA) and galvanically isolated Digital inputs 1) •...

Technical data Inputs Measurement uncertainty Nominal current: Version with Rogowski current inputs Overload capability: The additional uncertainty of the Rogowski coils ACF 3000 is not included in the following specifications: See operating instructions of Rogowski coil ACF 3000. Current measurement via Rogowski coils Reference conditions: (acc. IEC/EN 60688) Measurement range: 0…3000A, auto-ranging See operating instructions of Rogowski coil ACF 3000 for further information Ambient 15…30°C, sinusoidal, measurement over 8 cycles, PF=1, frequency 50...60 Hz Voltage, current: Power factor:...

Disposable measured quantities Mean value of voltages Umean Zero displacement voltage UNE Phase angle of voltages Current per phase, system Reactive power per phase, system Apparent power per phase, system Power factor per phase, system Active power per phase, system • Bimetal current per phase, system Mean value of phase currents Power factor per quadrant Reactive power factor per phase, system LF factor per phase, system Voltage per phase, system Measured quantity Measured quantity Basic measured quantities These measured quantities are determined using the configured measurement time...

Ambient conditions, general information Operating temperature: Storage temperature: Temperature influence: Long term drift: –10 … 15 … 30 … + 55°C –25 up to + 70 °C 0.5 x basic uncertainty per 10 K 0.5 x basic uncertainty per year Others: Usage group II (EN 60 688) Relative humidity: < 95% no condensation Altitude: ≤ 2000 m max. Device to be used indoor only! Mechanical attributes Orientation: Housing material: Weight: Flammability class: Any Polycarbonat (Makrolon) 500 g V-0 acc. UL94, self-extinguishing, non-dripping, free of halogen APLUS without display for top-hat rail mounting APLUS...