Prok Devices Private Limited
Prok Devices Private Limited
Rajaji Nagar, Bengaluru, Karnataka
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Digital Earth Fault Relay

Prominent & Leading Manufacturer from Bengaluru, we offer digital earth fault relay, earth fault relay, efr, idmt / definite time / instantaneo digital earth fault relay and idmt / definite time / instantaneous digital efr.
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Digital Earth Fault Relay
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Digital Earth Fault Relay

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Known for their features like high performance, minimal maintenance, longer service life and easy operation, the Digital Earth Fault Relay offered by us are demanded across the globe. Used for generators/alternators and transformers & feeders, these relays are manufactured utilizing quality-assured components that are sourced from authentic vendors of the industry. Moreover, these relays are fully digital acquisition & processing of data and wide operating voltages.

Features:

  • User friendly operations
  • Long functional life
  • High speed

Details:

  • Compact
  • IDMT (4 IEC curves), Definite Time & Instantaneous
  • Wide setting ranges
  • Fully digital acquisition & processing of data
  • Wide operating voltages
  • LCD display of operated current & fault current
  • Rugged and Tropicalized design

Specifications:
Auxiliary Voltage85-275V AC/DC or 50-550V AC/DC
Frequency50 Hz
Neutral or Summation CT rated Current-In1A/5A (Field Selectable)
Burden on CT<0.2VA
Sensitivity Setting Plug Setting Range (PS)PS Range: (5%-80%) of IN. in steps of 5%
Definite Time Settings in Sec0.0-20 Sec.(200 Steps) in Steps of 0.10 Sec

Applications:

  • Earth Fault Protection for Generators/Alternators
  • Earth Fault Protection for Transformers & Feeders


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Earth Fault Relay
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Earth Fault Relay

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Prok devices pvt ltd an iso 9001-2008 company introduces digital microprocessor / microcontroller based idmt / definite time / instantaneous earth fault relay (efr). It is a current sensing device which is tropicalised professionally designed and tested for protection of generators, transformers and feeders

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EFR
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EFR

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Prok Dv's Make Digital Microprocessor / Microcontroller Based Idmt / Definite Time /
Instantaneous Earth Fault Relay (EFR) can be employed with various earth fault protective
schemes, which are explained in brief with figures. The magnitude of the earth fault current depends on the fault impedance and invariably the fault impedance for earth fault is higher than that for phase faults, hence the earth fault current is low compared to the phase fault currents. The fault impedance depends on the system parameter and also on type of earthing. The neutral may be solidly grounded, grounded through resistance or reactance.

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Idmt / Definite Time / Instantaneo Digital Earth Fault Relay
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Idmt / Definite Time / Instantaneo Digital Earth Fault Relay

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Prok devices pvt ltd an iso 9001-2008 company introduces digital microprocessor / micro controller based idmt / definite time / instantaneous earth fault relay (efr). It is a current sensing device which is semitropical professionally designed and tested for protection of generators, transformers and feeders. Prok dv's make digital microprocessor / micro controller based idmt / definite time / instantaneous earth fault relay (efr) can be employed with various earth fault protective schemes

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Idmt / Definite Time / Instantaneous Digital Efr
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Idmt / Definite Time / Instantaneous Digital Efr

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The digital microprocessor / microcontroller based idmt / definite time / instantaneous earth fault relay (efr) measure the current using sampling technique. The analog current signal obtained from the protection ct is stepped down using interposing ct. Current signal is then applied to signal conditioning circuit using the buffer

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