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Numerical relays are all microprocessor based, but there are relays that take the advantage of microprocessor technology and are not fully numerical. In other words, if a relay is fully based on processing the samples of input signals it is numerical relay.
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∙ 15y ago
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What is difference between in digital and Numerical Relay?
They seem to be the same thing. Such a device is a protective relay. It uses a microprocessor to analyze power system voltages, currents or other process quantities for the purpose of detecting faults in an industrial process system.
Can a numerical relay give protevtion to over current over voltage and short circuit current at the same time?
Yes. Most microprocessor based relays that have both voltage and current inputs can provide overcurrent and over voltage protection simultaneously. Short circuit current is the same as overcurrent.
What is multilin?
Multilin is a microprocessor-based relay designed for the protection and management of medium and large horsepower motors and driven equipment.
How does a microprocessor decode?
How does a microprocessor decode?
What is the plural of microprocessor?
The plural of microprocessor is microprocessors.
Microprocessor is single chip processor or multi chip?
Microprocessor is a single chip processor.
What is the microprocessor of Windows 7?
The microprocessor is a piece of hardware, not software. Windows 7 doesn't supply a microprocessor.
Which microprocessor did sputnik use?
Sputnik did not use a microprocessor.
How do you interface a clock and microprocessor?
How do you interface a clock and microprocessor?
What is crystal in microprocessor 8085?
crystal is a oscilltor in microprocessor
What is the first microprocessor?
The first microprocessor was the Intel 4004.
Why ULN2803 is not directly connected to a relay why it is connected to a relay via microcontroller?
You actually have that reversed. A microcontroller is connected to a relay via a ULN2803 (or other power device driver IC) because the output pins of the microcontroller can't drive relays. The ULN2803 darlington transistors provide the power amplification and the inductive kickback protection needed to drive the relay while only lightly loading the microprocessor output pins.
