Minggu, 12 Februari 2017

HV Relay Types And Their Uses

By Linda Moore


Relays are machine switching apparatus that are used for activating a network or system with a remote signal. This takes out the need to manually handle high voltage setups usually associated with electrical cabling or wiring. These setups are highly insulated and these are often set in media that have greater dielectric values, like transformer oil, high vacuum environments and such.

Specialist companies provide industries with relays that have been engineered and tested to exacting specifications. The HV relay is a small but highly important unit that makes industries run with large scale processes, and the qualities are very demanding because of the workloads involved. You can research about these online and get comparative values.

The switches in use are of several types. The single pole, single throw type is one that comes in normally closed and normally open classes. It is the relay that companies use for direct applications, easy to operate with off and on functions found in basic kinds of usage for it.

The single pole double throw or SPDT offers both normally closed and open switches in one relay. This is used for larger arrays or banks of relays because of the continuity it provides these systems. It has heavier usage, good for large scale production, utility networks, phone company switching banks and other industrial uses.

A relay called the DPDT or double pole double throw uses two double throw switches which makes for flexible controls. The part one DPDT controls with a single arrayed bank will enable a complex industrial procedure to run all the time. A DPDT can shut off one part of it while it is being repaired or is no longer needed.

The DPDT relays are compartmentalized, for example, to operate an automated machining process. When one part of the operation is over, it can be switched off by a bank of DPDTs while other operations continue. Thus it saves money for production processes, or is used for repair and maintenance servicing.

The bistable switch or latching relay is something that is also used for continuity. The rest of the relay types work with failsafes, meaning that their coils need to be constantly charge for operations to continue, while the latching relay can be switched with a short pulse. Monitoring systems can therefore still control supplementary processes during or after an operation.

These also work with contactor switches for controlling high inrushes or overloads. These can range from 100Vdc to 1000V switching, so that normal relays will not overheat and blow up. They are the regulators that enable a system to work at maximum capacity without slowing down or having relay problems related to overloads in the system when in operation.

Relays and contactors come in many different kinds of voltage capacities, sizes and shapes to provide stability and safe operational procedures for industrial applications that need high voltage pulses. Each one is configured to address specific processes or volume distribution for all kinds of applications. Getting to know them requires that you know your specifications or switching needs.




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