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Earth Leakage Relays

We manufacture and export a wide range of Earth Leakage Relays which comprises N22, N45, N96, N96 –D, Series-1 and DC Earth Leakage Relays. These relays give rise to temperature and progressive failure of insulation which leads to operating flash over. These are widely used in power substations, generating stations, telephone exchanges and others for control & monitoring systems.  


Item Code: N22

We are engaged in manufacturing and exporting a comprehensive range of N22 Earth Leakage Relays. These high performing relays are used to detect the earth leakage current and are integrated with two tripping ranges and two time delay ranges in one unit. It is compact yet ultra flexible protection relay which is micro controller based true RMS measurement. Our range finds application in distribution panel board motors, pump panel, board generators transformers and others.

Features:

 

  • User selectable Normal/Fail safe modes
  • User selectable Auto/Manual reset
  • Wide power supply range from 90-270V AC/DC

Technical Specifications:

 

  • Supply voltage: - 90-270V AC/DC
  • Output contacts: one change over (potential free)
  • Switching duty: 6A resistive at 250V AC or 24V DC
  • Electrical life: 10 operations at designed switching duty

Relay status:


  • Normal- De-energized in normal conditions
  • Fail Safe- De-energized in fault conditions
  • Signal: From CBCT

    Ranges:

    • A = 25 - 250mA/50 – 500mA
    • B = 0.1 - 1A/0.2 -2A
    • C = 0.4 - 4A/0.4 - 4A

    Time delays: 0.1 -1 Sec /1 – 10 Sec
    Reset: User selectable Auto/Manual reset
    Mounting: Din channel
    Approximate weight: 100 gm
    Dimension: 22.5 mm (W) X 110 (D) X 73.5 mm (H)

      Item Code: N96-D

      Our range of N96-D Earth Leakage Relays that is ideal for sensing current faults in one phase or earth for protection of AC machines, transformers, generators and other electronic products. These are deigned using latest 12 bit micro controllers and are programmable with digital power protection relays with LCD displays.

      Features:

      • Wide time delay ranges with precise settings
      • True RMS Measurement
      • 2 selectable tripping ranges
      • C.B.C.T. Open/No signal fault indication
      • RS 232/485 output-(optional)
      • 0-5V Analog output-(optional)
      • Wide power supply range from 90-270V AC/DC

       

      Technical Specifications:

       

      • Supply voltage: 90-270V AC/DC
      • Output contacts: Two change over (potential free)
      • Switching duty: 6A resistive at 250V AC or 24V DC
      • Electrical life: 1Cf operation at designed switching duty

      Relay status:


      • Normal: De-energized in normal conditions
      • Fail Safe: De-energized in fault conditions
      • Signal: From CBCT

        Range:

        • A = 25 - 250mA/50 - 500mA
        • B = 0.1 -1A/0.2-2A
        • C = 0.4 - 4A/0.8 - 8A

        Time delays:
        Trip 0-10 Sec in steps of 100 ms
        Mode of operation: Under & Over current
        Reset: User selectable Auto/Manual reset
        Mounting: Panel Mounting (Flush) Cutout=92 X 92mm
        Approximate weight: 200 gm
        Dimension:
        96 mm (W) X 96 (H) X 80 mm (D)

          DC Earth Leakage Relays offered by us works on the principle of sensing the leakage current through Resistor Bridge. It senses the DC Earth leakage current for any equipment like switch boards, rectifiers, and battery chargers by sensing resistance between Positive-Negative terminals of DC system & earth. The lower resistance results in the loss of life or damage to equipment.

          Features:

          • Available with Auto/Manual reset & test facility
          • Highly rugged & error proof
          • Choice of self powered relays
          • Calibrated scale with ± 5% Accuracy &
          • Indications for Healthy, Faulty & Relay ' ON'

           

          Technical Specifications:


          • Supply voltage: 90-270V AC/DC or 12 / 24V/48V DC
          • Output contacts: Two change over (potential free)
          • Switching duty: 6A resistive at 24V DC or 240V AC
          • Signal: From Battery Terminals & Earth (12V, 24V, 48V, 110V/220V/300V Max.)
          • Time delay(optional): 0 -10 Sec (Settable)
          • Setting accuracy: ±5 % of Full Scale
          • Mounting: On any standard mounting channel
          • Reset: Auto/Manual reset facility
          • Dimension: 77 mm (W) X 90 mm (H) X 110 mm (D)

               

              Technical Data


              Supply Voltage

              90-270V AC/DC or 12 / 24V/48V DC.

              Output Contacts

              Two change over (Potential Free)

              Switching duty

              6A resistive at 24V DC or 240V AC.

              Signal

              From Battery Terminals & Earth

              (12V,24V,48V,110V/220V/300VMax.)

              Time delay (optional)

              0-10 sees. Settable

              Reset

              Auto/Manual reseting facility.

              Setting Accuracy

              ±5 % of Full Scale.

              Mounting

              On any standard mounting channel.

              Dimension

              77mm(W) X 90mm(H) X 110mm(D).

               

              The relay senses the DC Earth leakage current for any equipments like Switch boards, Rectifiers, Battery Chargers by sensing Resistance between Positive- Negative Terminals of DC System & earth. Thus leakage current if any will be dependent on the resistance value between respective terminals, Higher the resistance , lower is the leakage current & vice versa. Lower resistance results in to loss of life or damage to equipment. PROTIME's Earth leakage relay senses leakage current through Resistor Bridge & energizes relay when Resistance


              Item Code: N45

              We offer a quality tested range of N45 Earth Leakage Relays which is widely used in electrical and electronics industry. These are available with two tripping ranges and two time delay ranges in one unit and a dynamic 5 LED bar graph status indicator.


              Following features, our range is highly appreciated:

               

              • Micro controller based true RMS measurement
              • User selectable Normal/Fail Safe modes
              • User selectable Auto/Manual reset
              • Wide power supply range from 90-270V AC/DC
              • RS 232/485 output-(optional)
              • 0-5V analog output-(optional)

               

              Technical Specifications:

               

              • Supply voltage: - 90-270V AC/DC
              • Output contacts: Two change over (potential free)
              • Switching duty: 6A resistive at 250V AC or 24V DC
              • Electrical life: 105 operations at designed switching duty

              Relay status:

              • Normal- De-energized in normal conditions
              • Fail Safe- De-energized in fault conditions
              • Signal: From CBCT

              Ranges:

              • A = 25 - 250mA/50 - 500mA
              • B = 0.1 - 1A/0.2 -2A
              • C = 0.4 - 4A/0.8 - 8A

               

              Time delays:

              • Trip= 0.1 -1 Sec /1 – 10 Sec
              • Pick up = 1 – 10 Sec

              Mode of operation:
              Over current
              Reset: User selectable Auto/Manual reset
              Mounting: Din channel
              Approximate weight: 150 gm
              Dimension: 45 mm(W) X 110(D) X 73.5 mm(H)

              Item Code: N96

              We manufacture a wide array of N96 Earth Leakage Relays using quality raw material such as electronic components and copper laminations. These are available in two models in specific configurations, namely CR96-1 and CR96-1C. In addition, we also offer customization to meet the variegated requirements of numerous industries.

               

              Features:

               

              • Elegant and compact design
              • Wireless interiors
              • Settings by DIP switches
              • Test & Auto/Manual reset facility
              • CE marked relays

               

              Technical Specifications:

               

              • Supply voltage: AC-110V, 230V, 380V, 415V / DC-12V, 24V
              • Permissible supply Voltage: + 15%, -15%
              • Output contacts: Two change over (potential free)
              • Switching duty: 6A resistive at 250V AC or 24V DC
              • Electrical life: 1D operation at designed switching duty
              • Relay status: De-energized in normal conditions
              • Signal: From core balanced current transformer (CBCT)

              Range:

              • A = 15-90% (0.75 to 4.5A for 5A CT)
              • B = 20-120% (1.0Ato6.0Afor 5A CT)

              Time delay:
              0 -10 Sec
              Mounting: Panel mounting (FLUSH) Cutout=92 X 92mm
              Reset: User selectable Auto/Manual reset
              Approximate weight: 170 gm
              Dimension: 96 mm (W) X 96 (H) X 80 mm (D)
              Enclosure: ABS Type = N96
              Operating Temp & RH: -10°C, +55°C up to 80%

                Item Code: Series-1

                We provide high performance and energy efficient range of Earth Leakage Relays Series-1. These relays are available with Auto/Manual reset and test facility. The wireless interiors make it highly rugged & error proof, which ensures optimum performance of these relays.


                Features:

                 

                • Possible to use with DC aux. supply for protection systems

                • High accuracy standards calibrated with +/-5% accuracy

                 

                Technical Specifications:

                 

                • Supply voltage: AC-110V, 230V, 380V, 415V / DC-12V, 24V

                • Permissible supply Voltage: + 20%, - 25%

                • Output contacts: Two change over (potential free)

                • Switching duty: 6A resistive at 250V AC or 24V DC

                • Electrical life: 105 operation at designed switching duty

                • Relay status: De-energized in normal conditions

                • Signal: From core balanced current transformer (CBCT)

                   


                Range:

                • A = 30-300mA
                • B= 50-500mA
                • C = 0.1 - 1A
                • D= 0.3-3A
                • E = 0.5-5A

                 

                Time delay:0 -10 Sec

                Mounting: On any standard mounting channel

                Reset: User selectable Auto/Manual reset

                Approximate weight: 150 gm

                 

                Technical Data


                supply Voltage

                - AC-110V,230V,380V,415V DC-12V.24V

                Permissible supply Voltage

                - + 20%, - 25%

                Output Contacts

                - Two change over (potential free)

                Switching duty

                - 6A resistive at 250V AC or 24V DC

                Electrical Life

                - 105operation at designed switching duty

                Relay Status

                - De-energised in normal conditions

                Signal

                - From core balanced current transformer (CBCT)

                Range

                - A = 30-300mA, B= 50-500mA

                -C = 0.1 - 1A,D= 0.3-3A

                -E = 0.5-5A

                Time Delay

                - 0 -10Sec

                Mounting

                - on any standard mounting channel

                Reset

                - User selectable Auto/Manual Reset

                Approximate Weight

                - 150gm

                 

                Protech Engineering & Controls Pvt. Ltd.

                Nipul Gosalia (Managing Director)
                E- 12, Nand Jyot Industrial Estate, Andheri Kurla Road, Andheri
                Mumbai - 400072
                Maharashtra, India
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