Protech Engineering & Controls Pvt. Ltd.
Protech Engineering & Controls Pvt. Ltd.
Andheri, Mumbai, Maharashtra
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Current & Earth Fault Relays

We offer a wide range of Current & Earth Fault Relays that is widely catered to various power control and time control applications. The range of Current & Earth Fault Relays comprises N22, N45, N96, N 96D and Series 1. These relays are used in tripping circuits and supplying DC power source, electro-plating, etching, anodizing and others.

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Current And Earth Fault Relays
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Current And Earth Fault Relays

Our range of N22 Current & Earth Fault Relays is micro controller based true RMS measurement device. These relays are available with two time delay ranges in one unit with under or over frequency selection. It is compact in design yet ultra flexible protection relay, with the wide power supply range from 90-270V AC/DC.

 

Technical Specifications:

 

  • Supply voltage: 90-270V AC/DC (Less than 12V A)
  • Output contacts: One change over (potential free)
  • Switching duty: 6A resistive at 250V AC or 24V DC
  • Electrical life: 105 operation at designed switching duty
Relay Status :
  1. Normal - De-energized in normal conditions
  2. Fail Safe - De-energized in fault conditions
  3. Sensing: 230VCor 415VAC
Range :
    1. U/F= 30-48 Hz
    2. O/F= 50-60 Hz
    • Time Delays :  0 - 1 Sec, 0 -10 Sec
    • Reset : Auto / Manual user selectable
    • Mounting : Din channel or wall mounting
    • Approximate weight : 100gm
    • Dimension : 22.5 mm (W) X 110 (D) X 73.5 mm (H)

    Additional Information:
    • Item Code: N-22
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    Earth Fault Relays
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    Earth Fault Relays

    We provide N45 Current & Earth Fault Relays that is integrated with dynamic 5 LED bar graph status indicator. These micro controllers based true RMS measurement is available with two tripping ranges. These precision engineered and energy efficient relays are highly appreciated among our clients.

     

    Features:

     

    • 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 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 = 10-90% (0.75 -4.5A for 5A CT Sec)

    • B = 50-100% (1.0 -6A for 5A CT Sec)


    Time Delays :


    • Trip= 0.1 -1 Sec /1 – 10 Sec

    • Pick up = 1-10 Sec


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

     

    Technical Data :

     

    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 operation at designed switching duty

    Relay Status

    - Normal - De-energised in normal conditions Fail Safe - De-energised in fault conditions

    Signal

    - From CBCT

    Ranges

    - A = 10-90% (0.75 -4.5A For 5A CT Sec)

    - B = 50-100% (1.0 -6A For 5A CT Sec)

    Time Delays

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

    Mode of operation

    - Over current

    Reset

    - User selectable Auto/Manual Reset

    Mounting

    - Din channel

    Approximate Weight

    - 150gm

    Dimension

    - 45mm(W) X 110(D) X 73.5mm(H)



    Additional Information:
    • Item Code: N-45
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    Earth Fault Relays
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    Earth Fault Relays

    Our range of N96 Current & Earth Fault Relays is elegant and compact in design. It is integrated with wireless interiors; setting is done by DIP switches and isCE marked. These relays are quality tested before the final shipment to ensure the safety at client’s end.


    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 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

    • Reset: Auto / Manual user selectable

    • Mounting: Panel Mounting (FLUSH) Cutout=92 X 92 mm

    • 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%

     

    Technical Data :

     

    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-energised in normal conditions

    Signal

    From core balanced current transformer (CBCT)

    Time Delay

    - 0 -10Sec

    Mounting

    - Panel Mounting (FLUSH) CUTOUT=92 X 92mm

    Reset

    - User selectable Auto/Manual Reset

    Approximate Weight

    - 170gm

    Dimension

    - 96mm(W) X 96(H) X 80mm(D)

    ENCLOSURE

    - ABS Type = N96

    Operating Temp & RH:

    -10°C, +55°C up to 80%



    Additional Information:
    • Item Code: N-96
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    Digital Current And Earth Fault Relays
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    Digital Current And Earth Fault Relays

    We manufacture an export a precision engineered range of N96-D Current & Earth Fault Relays. These are manufactured using quality tested electrical components and copper laminations. Designed using latest 12 bit micro controller, our range is programmable with digital power protection relays with LCD displays.

     

    Features:

     

    • Wide time delay ranges with precise settings
    • True RMS measurement
    • CT 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
    • Electrical life: 105 operation at designed switching duty
    • resistive at 250V AC or 24V DC

    Relay Status:
     
    • Normal - De-energized in normal conditions
    • Fail Safe - De-energized in fault conditions
    • Signal: From CBCT
    • Range: A = 15-90%, B = 20-120%
    • Time delays:  Trip 0-10 Sec in steps of 100ms
    • Mode of operation: Under &/or over current
    • Reset: Auto / Manual user selectable
    • Mounting: Panel Mounting (Flush) Cutout=92 X 92 mm
    • Approximate weight: 200 gm
    • Dimension: 96 mm (W) X 96 (H) X 80 mm (D)

     

    Technical Data :


    1) Supply Voltage

    2) Output Contacts

    - 90-270V AC/DC

    - Two change over (potential free)

    3) Switching duty

    4) Electrical Life

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

    -105 operation at designed switching duty

    5) Relay Status

     

    6) Signal

    - Normal - De-energised in normal conditions Fail Safe

    - De-energised in fault conditions

    - From CBCT

    7) Range

    -A = 15-90% - B = 20-120%

    8) Time Delays

    9) Mode of operation

    - Trip 0-10 Sec in steps of 100ms

    - Under &/or Over current

    10) Reset

    - User selectable Auto/Manual Reset

    11) Mounting

    - Panel Mounting (Flush) CUTOUT=92 X 92mm

    12) Approximate Weight

    - 200gm

    13) Dimension

    - 96mm(W) X 96(H) X 80mm(D)

     


    Additional Information:
    • Item Code: N-96-D
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    Earth Fault Relays
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    Earth Fault Relays

    Our extensive range of Series-1 Current & Earth Fault Relays is fabricated with high accuracy standards calibrated with +/-5% accuracy. These can be used with DC aux. supply for protection systems. In addition, to meet the various requirements of our clients, we also custom make these relays.


    Technical Specifications:

    • Supply voltage: AC-110V, 230V, 380V, 415V @ 50Hz DC-12V.24V

    • Permissible supply voltage: + 15%

    • Output contacts: 2 C/O Relay (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 CT- 5A Secondary/Shunt (for DC), CATIII

    • Range: 20% to 120% = (1Ato 6A) For 5A C.T Secondary

    • Time delay: 0 -10 Sec (Settable)

    • Reset: Auto / Manual user selectable

    • Mounting: On any standard mounting channel


    Approximate weight:


    • For CR-1= 150 gm

    • For CR-3= 350 gm


    Dimension:


    • CR-1: 77 mm (W) x 55 mm (H) X 110 mm (D)

    • CR-3: 112 mm (W) x 55 mm (H) X 110 mm (D)

    Technical Data

     

    supply Voltage

    - AC-110V,230V,380V,415V @50Hz DC-12V.24V

    Permissible supply Voltage

    -+15%

    Output Contacts

    - 2 C/O Relay (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 CT- 5A Secondary/Shunt (for DC), CATIII

    Range

    - 20% to 120% = (1Ato 6A) For 5A C.TSecondary

    Time Delay

    -0- 10Sec (Settable)

    Mounting

    - on any standard mounting channel

    Reset

    - User selectable Auto/Manual Reset

    Approximate Weight

    - For CR-1= 150gm

    -For CR-3= 350gm

    Dimension

    - CR-1:- 77mm(W) x 55mm(H) X 110mm(D)

    -CR-3:- 112mm(W) x 55mm(H) X 110mm(D)


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