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the P63X series transformer differential relays are good funtional relays, but the software is different than the Micom PX2X and PX4X series relays. Not worse or better, just a different format. Functionally it provides adequate protection for your transformer with all the basic digital type elements. I prefer the P64X type relays since it has some advanced features, such as a unique CT failure setting that keeps the transformer protected from internal faults without mis-tripping, or disableing the restaint slope. It also accomodates up to 5 windings, I believe. Funtionally, both types are good solid protection, but good luck getting any support if your in the US. Just as they seemed to pick up the pace over the past few years, they have recently crawled back into a hole.
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Which relay is used to protect generators and motors?
differential protection relay
Difference between overload relay and over current relay?
due to the extension of loads they are using the relays for protection.........
What is thermal overload?
The load current is made to flow through the thermal overload relay, which is actually a bimetalic strip. Beyond a prespecified current the bimetalic strip tend to deflect due to heat (thermal effect) thus cutting off the circuit and hence it acts as an over load relay protection.
How does a quenching diode work?
Quenching diodes are used to protect the control circuit of a relay. Power is applied to a relay's coil to close it. When this power is released there is a backwards flowing pulse that can wipe out solid state devices like transistors, LEDs, chips, etc... The quenching diode is applied in parallel with the relay coil so that the cathode is on the positive side. During normal operation, the diode doesn't conduct and the relay operates normally. When the relay is switched off, the "reversed" back pulse is absorbed due to the low voltage drop of the diode which limits the spike.
What is cdg relay?
cdg is circular disk gear relay which is electromagnetic relay
Which relay is used to protect generators and motors?
differential protection relay
What is over load relay?
to be protect the motor and electrical equipments.some circuit provide to protect the motor.for exm.DOL starter, OLR to protect the motors....
Why use over current relay?
To protect things from getting damaged by overcurrent.
Difference between overload relay and over current relay?
due to the extension of loads they are using the relays for protection.........
What is an Induction Relay with shaded pole?
It is a device used to protect Electric Network and loads
How does an over current relay work?
An over current relay will operate when current exceeds its design rating. This application is intended protect loads or circuits from excessive current.
What is the need of under frequency relay in automatic load shedding?
to protect the generator with in or substation station power.
What is thermal overload?
The load current is made to flow through the thermal overload relay, which is actually a bimetalic strip. Beyond a prespecified current the bimetalic strip tend to deflect due to heat (thermal effect) thus cutting off the circuit and hence it acts as an over load relay protection.
Why do you need a relay for power windows?
manufacturers run items off of relays to protect switches from high amp loads.
Will the earth leakage relay protect me if i hold the bare neutral wire and then touch the bare live wire?
It definitely will NOT protect you because the ELR will not trip for a current going up the live and coming back down the neutral.
Where is Buchholz from?
If you are referring to a Buchholtz relay used to protect transformers, then it was named in honour of its inventor, Max Buchholtz, an engineer with the Prussian Electricity Supply Company, in Kassel, Germany.
What size fuse will protect a dc relay with 170 ma?
If this is for your volvo pre round 3 test it's 1 amp. 170 ma is .17 amps.
