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How do i switch a 3 phase motor from low to high voltage?
You can't. You must supply the motor with it's required voltage. If it's a dual voltage motor, follow the wiring schematic on the motor nameplate to switch from low to high voltage.
What is the function of capacitor voltage transformer at the switch yard?
function of capacitive voltage transformer is measure high transmission voltage with low range voltmeter and oprate the relay circuit to oprate CBs.
How does the low-voltage circuit controls the power to the high-voltage circuit?
Through a relay or some other kind of high voltage switching device.
What is the uses of relay?
The RELAY CIRCUIT used in electronics circuits for ,1. It is used for general mechanical SWITCH.2. It is used in High voltage switching mechanisms3. It is used in High voltage and current Applications.
Is a current relay same as potential relay?
current relay are using for over current low state & high state.but potential relay are related to voltage.
Is a resistor and a relay the same thing?
No, they are not the same. A resistor is a current reducer and a relay is essentially a switch (using low voltage to switch high voltage on/off)
How do i switch a 3 phase motor from low to high voltage?
You can't. You must supply the motor with it's required voltage. If it's a dual voltage motor, follow the wiring schematic on the motor nameplate to switch from low to high voltage.
What is the function of capacitor voltage transformer at the switch yard?
function of capacitive voltage transformer is measure high transmission voltage with low range voltmeter and oprate the relay circuit to oprate CBs.
What are or relay circuits used for?
A relay is used to switch a different voltage and/or current, to the control signal.Examples:1) Low voltage electronic signals operate a relay, which can then control mains voltages and high currents. This isolates potential harmful voltages from getting into the low voltage electronics.2) The control switch may be some distance from a high power unit. Instead of running large cables and using large clumsy switches to control it, small low voltage, low current cables, can be used instead. Using a relay close to the unit to keep the price down and danger away from the operator.3) The starter motor on a vehicle, uses massive amounts of current and have thick cables to supply it. These large cables are not routed through to the ignition switch. Instead, small cables are used at low current, to operate a solenoid right at the motor. This is a relay.
How do you change the color of a light switch switch?
Easy, paint the exposed part the color of your choice. Hard, call a pro and have him/her install the desired colored switch....pkazsr Paint it.
What is a ignition relay?
The relay is a device that typically uses low amperage 12 vdc electrical (control voltage) to switch a much higher amperage circuit (load voltage). In the case of an ignition relay, the key/ignition switch is not capable of handling the high amperage requirements of the engine components electrical draw, so a relay is run in the circuit and controlled with the keyswitch. The relay has an electromagnet (control) and a switch (load) inside, and the electromagnet moves the switch when the control is energized. You do not ALWAYS have to have a burned fuse to have a bad relay, the contacts on the switch can burn, or the wire in the electromagnet can open, both resulting in a non-functioning relay.
How are relays safe?
Relays can be considered safe when used for remote switching. It only takes a small, low voltage current to activate a relay, which can then switch a high voltage, high current supply. There is no electrical connection between the coil and contacts. So switching dangerous voltages can be done at a distance, without anyone getting near the dangerous voltages.
How does the low-voltage circuit controls the power to the high-voltage circuit?
Through a relay or some other kind of high voltage switching device.
What is the uses of relay?
The RELAY CIRCUIT used in electronics circuits for ,1. It is used for general mechanical SWITCH.2. It is used in High voltage switching mechanisms3. It is used in High voltage and current Applications.
Can connect high voltage supply to low voltage device?
Yes, but it won't be pretty.
What is a voltage transformer and mention its function?
A voltage transformer (known as a 'potential transformer' in North America) is classed as an instrument transformer. It is used to reduce the voltage across a high-voltage load to a value that can be read (usually remotely) by an ordinary a.c. voltmeter, while electrically isolating that voltmeter from the high-voltage system for the purpose of safety. It can also be used to supply an input to a protection relay.
What is metrosil?
Metrosil is a non linear resistor and used with high impedance differential protection.During an internal fault ,the voltage developed across the relay can be very high and the metrosil limits the voltage across the relay ,thus protecting the relay and the wiring from any damage
