VS-26MT20

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Diodes - Bridge Rectifiers form a major application field of the VS-26MT20 voltage-sensing relay. This specialized device is a galvanically-insulated, 2-channel input and output current-monitoring relay with a built-in separate amplifier and control circuit capable of outputting up to 1A very high voltage (VHV) outputs at DC or AC voltages. It is designed for use in sensing systems and applications where both AC and DC voltages are present.

The working principle of the VS-26MT20 consist of a single bridge rectifier forming the input circuit which is fed with a DC or AC voltage and the presence/absence of the rectified voltage is detected. The rectified signals are then amplified and outputted. In most cases, multiple bridges could be connected in series to provide greater measuring accuracy.

The main application of the VS-26MT20 is the detection of phase unbalance and the prevention of over- or under-voltage, as well as motor protection by sensing all three phases individually. By linking multiple devices together, the relay can be used for protection in industrial processes that require high levels of safety and precise control, such as in electric motors, transformers, and other similar equipment.

The VS-26MT20 also has the capacity to monitor the voltage of multiple input channels at the same time and send separate output signals for each channel. This allows for the detecting of any electrical imbalance or possible faults in the electrical system. It can also be used to detect gradual changes in either input voltage or current and provide an output signal accordingly. It also performs automatic switching between its two channels, enabling longer-term and smoother protection against overload and short circuits.

The VS-26MT20 also offers protection against low voltage conditions. Multiple relays connected in series can be used to detect over-voltage, under-voltage, or total absence of voltage while the DC or AC input signals are being monitored. This eliminates the need for a separate over-voltage protection device, making it an economical solution for protecting sensitive electro-mechanical equipment.

The VS-26MT20 also enhances safety for personnel working in hazardous areas by providing protection against electrical shock and excessive voltage. In addition to having a built-in over-voltage protection device, it can also be used to multiplex the output current and act as a ground fault indicator.

Overall, the VS-26MT20 is a powerful yet economical voltage-sensing relay, ideal for any application that requires precise detection of current and/or voltage. Its wide range of applications, such as motor protection, overload protection, voltage monitoring, line fidelity measurements, and synchronization, make it an indispensable tool for safe and effective industrial operations.

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