Prok Devices Private Limited
Prok Devices Private Limited
Rajaji Nagar, Bengaluru, Karnataka
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Static Earth Leakage Relay

Manufacturer of a wide range of products which include static earth leakage relay, static earth leakage relay with cbct, static elr with zct, static elr, static earth leakage relay with zct and earth leakage relay with cbct.
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Static Earth Leakage Relay
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Static Earth Leakage Relay

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Engaged as a manufacturer, supplier, exporter and trader, we are offering our clients with Static Earth Leakage Relay. Used to detect small leakage currents in electrical systems, these relays are provided different input auxiliary voltage and current sensitivity range to suit the demands of clients. Our offered relays are applicable in L.T. control panels, oil refineries, cement plant, switch boards, steel plant, chemical platforms and pulp industries.

Features:


  • Consistent reliability with accuracy
  • Fixed or variable current sensitivity by Dip Switch selection
  • LED’s for visual indication of fault
  • High Barrier connector at rear for easy termination and safety standards
  • Tamper proof polycarbonate cover in the front
  • Test and Reset Facility for testing healthiness of the relay

Specifications:

  • Input Auxiliary Voltage: 110V, 230V, 415V, 550V AC 50Hz 48V, 110V, and 220V VDC
  • Current Sensitivity Range Variable: 30-300 mA,50-2000 mA, 300-3000 mA 1-4 Amps, 1-8 Amps, 1-10 A, 4-12A
  • Current Sensitivity Range Fixed: 30 mA, 100 mA, 300 mA, 500 mA, also user specified ranges(sensitivity)
  • Tripping Time Variable: 0.15–3 sec
  • Tripping Time Fixed: 100 millisec, 500 millisec , 1 sec and 3 sec
  • Core Balance Current Transformer Type: Tape wound or Resin cast
  • CBCT/ZCT-Standard Size I.D. Circular: 40 mm, 65 mm, 100 mm, 150 mm, 200 mm, 250 mm, 300 mm
  • CBCT/ZCT-Standard Size I.D. Rectangular: User specified
  • Relay Contacts: One pair of potential free NO and NC contacts or Two change over potential free NO and NC Contacts
  • Contact Rating: 8 Amps/ 250V AC/ 8 Amps, 30 V DC
  • Mounting Type: Flush/Din
  • Dimensions in mm Flush: 96 mmx96 mmx70 mm
  • Dimensions in mm Panel Cutout size: 90x90+0.1 mm
  • Dimensions in mm Din: 75x95x75 mm (LxHxD) (fixing on 35mm din channel)
  • Note: 30-300 mA, 50-2000 mA and 30-3000 mA, ELR is available upto 150 mm I.D. CBCT/ZCT only

 

Applications:

  • Frame Leakage protection for L.T. Control Panels and switch boards
  • Earth Leakage protection for Feeders/Motors/Generators/Transformers/Mobile Operating Equipments
  • Protection for hazardous sensitive environments like Oil Refineries/Cement Plant/Steel Plant/Chemical Platforms/Pulp industries and General Electrical Distribution
  • Protection for Mining and Control Engineering

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Static Earth Leakage Relay With Cbct
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Static Earth Leakage Relay With Cbct

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Earth Leakage Current give rise to generation of heat and result in progressive failure of
insulation, which leads to earth faults sparking flashovers, deterioration of earthing and finally
results into catastrophic fires which destroys costly equipments, gadgets and precious lives.
It is therefore essential to detect earth leakage current well before they cross the threshold
limits and isolate the circuit in the event of leakages. Conventional over current and short
circuit protection device are not designed detect earth leakage currents.

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Static Elr With Zct
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Static Elr With Zct

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Prok dv's make Static Earth Leakage Relay (ELR) with Core Balance Current Transformer ( CBCT / ZCT) are used to detect the leakage current in an Electrical Power System. Static Earth Leakage Relay (ELR) Transmits a signal to activate the trip coil of the MCCB/ACB/OCB CONTACTOR in the event of Earth leakage, resulting in automatic isolation of the electrical power system. Static earth leakage relay (ELR) and core balance current transformer (CBCT / ZCT) have been widely used and accepted because these have field adaptability and are economic.

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STATIC ELR
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STATIC ELR

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Static Earth Leakage Relay(ELR) employs a Core Balance Current Transformer (CBCT / ZCT) to sense the leakage current. The CBCT / ZCT mounted externally and load current carrying cable is passed through the CBCT / ZCT. Ideally in a leakage free system the incoming and outgoing currents are equal and opposite in direction, which means that the vector sum of three phase currents is zero.In case of the Earth Leakage due to insulation failure of direct line to ground fault, the vector sum of currents is not zero and therefore generates resultant magnetic flux in the CBCT / ZCT and signal is fed to the electronic circuit of Earth Leakage Relay (ELR). This signal is compared with internal reference determined by the selected position of the leakage current scale in the front facia of the relay.

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Static Earth Leakage Relay With Zct
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Static Earth Leakage Relay With Zct

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Prok dv's make Static Earth Leakage Relay (ELR) with Core Balance Current Transformer ( CBCT / ZCT) are used to detect the leakage current in an Electrical Power System. Static Earth Leakage Relay (ELR) Transmits a signal to activate the trip coil of the MCCB/ACB/OCB CONTACTOR in the event of Earth leakage, resulting in automatic isolation of the electrical power system.

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Static Elr With Zct
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Static Elr With Zct

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Earth Leakage Current give rise to generation of heat and result in progressive failure of insulation, which leads to earth faults sparking flashovers, deterioration of earthing and finally results into catastrophic fires which destroys costly equipments, gadgets and precious lives. It is therefore essential to detect earth leakage current well before they cross the threshold limits and isolate the circuit in the event of leakages.

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*Your information is safe with us.

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Earth Leakage Relay with CBCT
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Earth Leakage Relay with CBCT

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Prok dv's recommends and suggests to use Digital Microprocessor/ Microcontroller based
Earth Leakage Relay (ELR) with core Balance Current transformer (CBCT / ZCT) for typical
areas like UPS/ Inverter application, Mining, Cement, Petroleum & Oil Refineries, Steel, Paper
and Pulping industries for greater Sensitivity, Selectivity and Reliability. The measurement of
Leakage Current is TRUE RMS reading and the device has an external ADC having 24 bit for
greater degree of Accuracy. The Earth Leakage Relay (ELR) has Back-Lit LCD Display 2 Line 8
Character for displaying the nature and magnitude of Fault.

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Earth Leakage Relay 2D

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Earth Leakage Relay 2D
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Numerical Over Current and Earth Fault Relay

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Numerical Over Current and Earth Fault Relay
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Transformer Protection Relay

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