The devices are designed for measuring and monitoring combined and phase voltages, currents, active and reactive power, power factors, THD and harmonic components of voltages and currents, and frequency in single-phase and three-phase LV, MV, and HV networks.
The built-in electricity meter measures electrical energy in four quadrants and records the maximum average active power. An internal temperature sensor is used to monitor the temperature in the switchboard. In addition to instantaneous values, the device also evaluates average values for a settable averaging interval and records their minimum and maximum values. The device is equipped with three voltage and three fully isolated current inputs.
Networks with a nominal voltage in the range of 57.7/100 to 400/690 VAC can be measured. The current inputs can be either of the "X/5A" type, i.e., with a nominal range of 5A (from standard (PTP)), or they can be adapted for connection to special miniature current transformers with a through-core ("Pxxx") or split-core ("Sxxx") design.
These external transformers are included with the device and can be installed directly on the measured cables. They are therefore intended for use in cases where the use of conventional current transformers is difficult or disadvantageous.
Since the range of these transformers starts at 5A, they can also be used for measurement on the secondary circuit of standard current transformers.
Optionally, the device can be equipped with two relays with programmable functions or semiconductor outputs, which can be used as pulse outputs of the transmitting electricity meter. In addition, one digital input is available for general status monitoring.
The power supply for the standard version of the device is in the range of 85 ÷ 275 VAC or 80 ÷ 350 VDC. A 20 ÷ 75 VDC version can be ordered optionally.
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