Monday 6 February 2017

HV Relay Types And Their Uses

By Linda Moore


Relays are used as switches for mechanical systems or networks that need remote activation. This is because these systems have very high voltage values in terms of electrical current in use. These also need very good insulation values because they can injure people who get close, and the switching sets themselves need some good dielectric materials to float in, like high vacuum and transformer oil.

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.

SPDT is something with both on and of options, technically this means single pole double throw, with closing and opening options in one relay. The continuity provide by this is something that is important to operating a system of relays under one control bank. This type of large scale switching apparatus can control industrial production and complex networks of lines for electric or telecom companies.

The double pole or double throw relay or the DPDT contains two double throw relays. These units can compartmentalize any part of a production process or electrical network. This means that a factory, say turn on or shut off one part of its operations for servicing or repair while other processes are still running to complete the complex set.

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.

Contactors are placed strategically through a switching system. They provide normal throughputs a way to handle great charges of electrical pulses of up to 1500V. Thus, an industrial process can operate at very high capacities through contactor switches without fear of fuses and relays burning out and halting operations.

Contactors or swtiches can be had in different sizes and shapes and load bearing capacities for securing and stabilizing networks on high voltage. Each one is made to up to standards for specific purposes, because specialization varies for all kinds of systems. Therefore, to get at the right relay, you have to know the specs that you need.




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