LIART24A

LIART24A is a digital ammeter with three relays output limit alarm function. It can be used to measure single phase AC current, voltage, and frequency. It has a 4-digit LCD display with 5-key touch keyboard, and a variety of instruction settings and operations. The ammeter has a voltage transformer signal input, and a three-level relay output. Furthermore, it features a range of functions such as alarm delay, over and under voltage alarm, over and under current alarm, over temperature alarm, 24-hour clock defeat, short-circuit protection, and low power consumption.

LIART24A can be used in a variety of environments and applications. One of the primary uses is monitoring three-phase current distribution systems. It allows users to detect potential overload, short circuit, and phase loss. It is also suitable for monitoring transformers, monitoring generator operation, and supervising systems performance. Additionally, it can be used to monitor industrial processes with current and voltage signals.

The working principle of the LIART24A ammeter is based on the principle of electromagnetic induction. Current and voltage signals are compared to a reference voltage. The ammeter then generates a corresponding pulse output to realize the measuring of current and voltage. The ammeter uses its internal precisely regulated DC power source to supply the reference voltage and to drive the measurement circuit.

The three-level relay output allows the ammeter to detect potential overloads, short circuits, and phase losses in the current distribution system being monitored. Upon detection, the relay output will be tripped to shut off a circuit or excite an alarm. The relay output can also be used to activate a motor or other devices that require a current or voltage signal.

In addition to the basic functions, the LIART24A also features 24-hour clock defeat, short-circuit protection, and low power consumption. 24-hour clock defeat will ensure that the ammeter does not measure during certain times in order to avoid inaccurate readings. The alarm delay will delay the alarm activation for a set period of time after the current or voltage is detected. The ammeter also has short-circuit protection, which will reduce the amount of current needed to cause damage to the ammeter in the event of a short circuit.

To sum up, LIART24A is a digital ammeter with three relays output limit alarm function. It can be used to monitor single-phase AC current and voltage, as well as frequency. The ammeter has a voltage transformer signal input and its internal precisely regulated DC power source to supply the reference voltage and to drive the measurement circuit. It is suitable for various of applications such as monitoring three-phase current distribution systems, monitoring transformers, monitoring generator operation, and supervising systems performance. Furthermore, the three-level relay output allows the ammeter to detect potential overloads, short circuits, and phase losses as well as to activate a motor or other devices.