Tuesday, February 14, 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.

There are companies that are specialist manufacturers of relays and have excellent sets for testing, engineering and application for their products. The HV relay is a gadget that industry relies on, with very large values for application, the ISOs for it being of very high and demanding qualities. Get to know the various types online and see how they work.

There are several relay types in use today. First, there is the single pole single throw switching that has normally open and normally closed versions. This type of relay is the most direct and common one in use for most applications, an on and off switch simple to use and operate.

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.

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.

Latching or bistable switches are also useful for continuous operations. When all other types of items have failsafes that require them to have continuous coil power for the switch to be at the on configuration, the bistable system needs only a momentary pulse. This means that monitoring and control can turn this switch on or off as needed when it needs supplementary processes.

These are often paired with special switches called contactors. These regulate very high rushes or overload values, from 100V to 1500V switches that normal switching cannot handle. These contactors will enable entire systems to switch at will even through capacity loads or maximum operations without hitches like burnt fuses and relays and other delays related to high voltages.

Contactors and relays are all available for many kinds of capacities, shapes and sizes for securing and stabilizing high voltage networks. Any specific kind is made to handle specified work sets through a distribution and switching network. You have to be knowledgeable about specs for your needs and requirements.




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