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  • Interposing Potential Transformer - CR4 Discussion Thread - GlobalSpec
    Re: Interposing Potential Transformer 07 09 2020 12:25 PM Yes, auxiliary PTs have been used to get a phasing configuration different from what the main PTs provide, of which what you describe is a very common example
  • Interposing Relays - CR4 Discussion Thread
    Interposing Relay is the auxiliary relay which is used to isolate the two different systems (such as high current and low current or 24V control and 120V control or AC voltage and DC voltage etc ) in the control circuits
  • Interposing Relay - CR4 Discussion Thread - GlobalSpec
    If the contacts of a particular switching and or protection device is incapable of making and or breaking a much larger current as that of another contactor coil or a circuit breaker's closing and or trip coil, one has to use another relay, whose contacts are strong enough to handle such large making or breaking currents - but whose coil will have a making or breaking current within the
  • interposing VT in synchronising circuit - CR4 Discussion Thread
    Re: interposing VT in synchronising circuit 11 06 2008 7:53 PM may i know where is the location of this your project ? and what is kind of this project ? is it related to oil gas project ? thanks
  • Interposing Current Transformer - CR4 Discussion Thread
    Re: Interposing Current Transformer 09 09 2013 10:36 PM In case it is ring type CT and your earth conductor is not too thick (max earth fault current = 100A) and is flexible enough to loop around the ring, loop primary conductor twice the ratio becomes 200:1 and once more it will become 133:1
  • Interposing Relays - CR4 Discussion Thread - GlobalSpec
    An interposing relay is normally used to allow a command signal to operate a device which requires a higher current or higher lower voltage I'm not sure of the problem you are facing, whether you need the relay for that purpose, or it is the inclusion of differing voltages in the same cable that is concerning you?
  • how interposing ct worked - CR4 Discussion Thread - GlobalSpec
    Re: how interposing ct worked 02 16 2008 9:58 AM The interposin CTs are used for Power transformer Differential Protection circuit In a delta Star Power tranformer, the cts will be connected star and delta formation, for eliminating Zero seqence current on star side There will be mismatch of secondary current , to maintain equilibrium
  • Line Monitoring for Digital Output - CR4 Discussion Thread - GlobalSpec
    A simple high-impedance indication light paralleling the load devices (interposing relay coil solenoid) would give adequate visual verification for both If you need details on voltage level installing high impedance digital or analog voltage meters in parallel to the load devices (interposing relay coil solenoid) will give visual indication
  • The reason why Star Delta CT configuration asre used?
    The PLC is a ABB type, 5 Amp through Transducer, No program not accessible It did work before the guys started changing wires and "upgrade" die panel
  • Difference Between Free Contact and Dry Contact?
    The external contact used to start the motor equipment is a dry contact, and it switches the voltage supplied by the PLC's The output modules in PLC uses Interposing relay connected to MCC , the dry contact connects the drive input to the PLC's 24 VDC and powers the drive circuit input





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