Neutral Earthing Resistors are used to restricts the flow of current during an earth fault on an alternate current distribution system. The resistor is connected between the neural point of a transformer and earth or generator and earth. The neutral earthing resistors offer dependable protection every time whenever there is a fault. Neutral Earthing Resistor are used in power distribution, mining and industrial installations etc. The resistor is designed to tolerate most hazardous work conditions and atmospheric changes. Neutral Earthing Resistor is known for durability and reliability. Highlights: Resistance value pre-determined to operate fault-clearing relays and to prevent damages. System is designed as per to current and time ratings and compatible with the protection switch gear Resistance value is precise and determined and remains constant throughout life. Made from tough steel grids of a high quality iron-chrome-aluminium Non-corroding and offer good stability Mica and ceramic insulators Resistor in fully protected and ventilated steel enclosures

Buffer Resistors for application in cranes or other heavy machinery is offered. These are instrumental in starting and controlling the speed of AC or DC motors. Made up of stainless steel AISI-304, AISI-410 or AISI 430 or FeCrAl-AISI-406, these are non-corrosive & stable resistors. With rating varying from 2-10 minutes, it can be intermittent or continuous. The construct & configuration of buffer resistors are as per the IPSS-1-10-002-82 with amendment no.1 and BS 587 for starting/speed control resistor; IS 2147 & IS 12063 of 1987 for degree of protection for enclosure; IS 5 for paint shade and can meet other standards as required by client.

Clients can avail from us a wide range of Wire Grid Resistance that is widely used for earthing applications. It is precisely designed and manufactured with the aid of cutting edge technology from quality approved raw material. Provided product is employed in alternative current distribution networks and limit the restricted earth current to a safe value that flow from the transformer star point without surpassing specified temperature. The offered product is quality tested before delivery to ascertain their durability at clients end. In tune with the variegated requirements of our clients we provide this Wire Grid Resistance in various specifications.

• Resistance wire is would on ceramic insulator to form a coil for wire wound.
• Tapping can be taken at any place.
• These Resistors are economical for low current.
• Available in ratings of 1 Amp and above.Specifications:
  • Dissipation is negligible & the temperature rise for the resistor element depends on its capacity to store the energy generated in proportion to the mass & specific heat of the material used. Theses NGRS are connected between the neutral point of transformer / generator & the earth.
  • In Earth fault condition continuous current of 5 % to 10 % of full load current pass through the resistor due to unbalance in systems.
  • In Earth fault condition the Restricted earth fault current passes through the Metallic Resistor protecting the system till automatic protection takes place by absorbing the earth pressure, protecting the winding etc.
  • Hence these resistors are designed for allowing maximum heat dissipation
  Internal Features Of Resistor Enclosure

  Group of Resistance elements are mounted together to form a Bank. Banks are then connected in series or parallel to provide the current and ohmic value required.

  • All Resistance Bank to Bank interconnections will be done by solid stainless steel / copper.
  • In case of continuous current ratings for better heat dissipation, perforated sheet / jali with welded GI wire mesh is provided at the bottom.
  • Foundation channels have welded or bolted to the angle iron structure on two sides with arrangement to fix on foundation by bolts at site.
  • Terminals are brought through Porcelain bushings of appropriate voltage class or brought down as per requirement of customer.
  • In case of higher voltage, the banks are placed on stand off insulators housed inside the enclosures, or the enclosures is also insulated from ground by using stand off insulator if asked by customer
  TESTS(A) Routine Tests: - Following Tests Will Be Conducted.
  • Visual and Dimensional.
  • Insulation resistance value measurement by using 500V / 1000V megger before and after dielectric test.
  • Resistance value measurement with ???? 10 % tolerance.
  • H.V. Test of twice the rated voltage +1000 volts for voltage class below 660 volts or 2.25 times of rated voltage +2000 volts for voltages above 1100 volts.
  (B) TYPE TESTS :-
  • Temperature rise test i.e., Heat run test if required will be conducted by passing equivalent / rated current for rated / equivalent time keeping IT Constant through a part of Resistor.
• Technical Information:
  • Line to neutral voltage rate
  • Normally Full load current rate is same
  • System Voltage is divided by root3 i.e. 1.732.
  • Initial current flow through resistors when it is cold
  • Time length rate for NGR must tolerate rated voltage.
  • NGR construction includes resistor assembly, internal connections, plus required insulators, etc
  • Generally temperature rise rating is restricted to 375 deg.c. above ambient temperature as per BS-587. It can be 760 deg.c. as per IEEE-32
  • Normally 10 % of full load current is require for continuous functioning rate of neutral grounding resistor of 5 % to 10 % of full load current
  • Such resistor elements material are made from any stainless steel or FeCrAl or Cu-Ni or Ni-Cr or any other resistance material. Normally formed stainless steel element are best
• Information To Be Furnished To Us:
  • Material of Resistor
  • Ohmic Value
  • Current Rating
  • Duty rating 10 sec., 30 sec., 60 sec., & continuous etc.
  • If details against and cannot be given then inform details of transformer such as KVA rating, full load current, Primary & Secondary Voltage.
  • System voltage / operating voltage.
  • Type of Enclosure and material for enclosure ( protection class as per IS- 12063)
  • Location: Indoor or outdoor.
  • Temperature rise allowed over an ambient temperature.
  • Whether space heater, current transformer , isolating switch on load / off load, manually / motorised, or any other accessories are required. Details of atmospheric conditions at site and height above sea level

Buy various high quality Motor Control Resistors online globally in various models having high efficiency and longer service life as per changing market demands

We are offering Starting/Motor Control Resistors. For starting / Speed Control of A.C or D.C. Motors, resistors are manufactured as per customers requirement at specified starting torque or for limiting initial inrush current to an acceptable value. Mainly these are used for cranes. Rating can be 2 minute, 5 minute, 10 minute, continuous or intermittent. Material of resistor is normally Stainless steel AISI-304, AISI -410 or AISI 430 or FeCrAl-AISI-406.

• IPSS-1-10-002-82 with amendment no.1 and BS 587 for starting / speed control resistor.
• IS 2147 & IS 12063 of 1987 for degree of protection for enclosure.
• IS 5 for paint shade.
• Any other standard as required can also be followed.

• Visual and Dimensional
• Insulation resistance value measurement by using 500V megger before and after dielectric test.
• Resistance value measurement with 10 % tolerance.
• H.V. Test of twice the rated voltage +1000 volts for voltage class below 660 volts.

• Temperature rise test i.e., Heat run test if required will be conducted by passing equivalent / rated current for rated / equivalent time keeping IT Constant through a part of Resistor.

• Rotor volts at standstill.
• Rotor Current at full load.
• Duty rating (Time on / off No. of Cycles).
• Starting Torque in percentage of full load Torque.
• Material of Resistor.
• No. of steps / sections and its resistance values per phase.
• Type of enclosure (Protection Class as per IS-12063).
• Temperature rise allowed.
• Whether terminals should be brought down at one place.
• Details of atmospheric conditions at site.

• Rotor volts at standstill.
• Rotor Current at full load.
• Percentage (%) of slip required.

Engaged in offering Buffer Resistors online used in heavy machine applications and are non-corrosive & stable resistors in natureOurs is a coveted organization that is engaged in manufacturing, supplying and exporting premium quality Buffer Resistors. These are widely used in heavy machine applications such as crane of various types. Offered resistors are capable of controlling and monitoring the speed of both AC or DC motors. These resistors are appreciated for their non corrosive nature, stability and perfect finish. We have made these Buffer Resistors available in market for our valued patrons at market leading prices.

• The construct & configuration of buffer resistors are as per the IPSS-1-10-002-82 with amendment no.1 and BS 587 for speed control resistor
• These Buffer resistor are made up of stainless steel AISI-304, AISI-410 or AISI 430 or FeCrAl-AISI-406
• Resistor can be intermittent or continuous with rating varying from 2-10 minutes
• Buffer resistors are used for application in cranes or other heavy machinery
• Buffer resistor are non-corrosive & stable resistors in nature
• IS 2147 & IS 12063 of 1987 for degree of protection for enclosure
• IS 5 for paint shade and can meet client requirements

With that aid of technologically updated infrastructure and a team of diligent professionals, we are involved in manufacturing, supplying and exporting Punched Grid Type NGR. These resistors are applauded by our clients world wide for their easy installation, dimensional accuracy, safe usage, excellent protection and durability. The qualitative Punched Grid Type NGR is one of the most reliable sources for saving the whole electronic system from failure and collapse.

Our expert team of manufactures a spectrum of precision engineered products of Punched Grid Type NGR. We offer a gamut of designed products with high performance, latest technology, reliable and durability. Along with superior products quality, the company is preferred for its efficient post-sales services. The service engineers provide required services within committed time period for the products.

• Grids are punched out of AISI 304 / AISI 430 type stainless steel sheets or AISI - 406 i.e. FeCrAl Sheets.
• Temperature coefficient resistance is 0.094% per degree C for stainless steel AISI -304 & 0.15% per C for FeCrAI i.e. AISI -406
• Connection between the adjacent grids can be of following type :-
• (A)Adjacent grids will be connected by using galvanized Nut-Bolts using spring washers.
• (B) With Tig welded joints, which are totally secured against intense vibration.
• Terminals can be brought down at the bottom for ease of connection if asked.
• Each grid element is supported on Tie rods. Hence the assembly of resistance unit becomes very sturdy and it can absorb intense vibrations. Grids are insulated from M.S. tie rod by using Mica tube.
• Galvanised / Aluminium pipe / MS Washers will be provided as spacer between grid elements and the same will be insulated from grids by using Mica washers.
• These grids have wide range of current rating varying from 10 Amps to 200 Amps. of breakage of epoxy link at site.

Since 2004, we have been manufacturing, exporting and supplying Neutral Grounding Resistor. Under the proper observation of our experts, the offered resistor is manufactured by utilizing fine grade components with the aid of modish techniques. This resistor is extensively used in industrial power system for the purpose of grounding transformers and generators. Furthermore, the offered NGR can be availed from us at reasonable rates. Basically, Neutral Grounding Resistor is a resistance that is linked between neutral points of earth and transformer.

• Eliminates various problems such as transitory over, lower voltages, inverse flash, inadequate current flow and others.
• Gives protection to transformers from damage and burning.
• The ohmic value remains constant, even if the temperature rises.
• Reduces the potential ground-fault current to a predetermined value.
• Also named as Earth Fault Protection, this prevents fault damage.
• Employed for earth fault protection in the many of the medium voltage electricity generation as well as distribution systems.
• Offers the best choice in terms of quick response to figure out the setback.
• Prevents and minimizes the overheating and mechanical stress on the conductors.
• Permits to hold down the ground faulty current for a short period of time to promptly discover the fault, besides protecting the transformers.

• Rated Voltage : For NGR rated voltage means line- to neutral voltage i.e. System Voltage divided by root3 i.e. 1.732.
• Rated Current : Means Initial current that will flow through resistor when it is cold. Normally Full load current value is same as Rated current.
• Time Rating : It is length of time for which NGR must tolerate rated voltage.
• Short Time Rating : Normally it is 10 sec. or 30 sec. or 60 sec. depending on design parameters of protection system. IS-3043 recommends 30 sec. rating.
• Continuous Rating : It is normally 10 % of full load current for healthy system NGR to be designed for continuous rating of 5 % to 10 % of full load current (if required).

Our range of NGR For Transformers does not need continuous monitoring or maintenance and is directly connected to the MV & LV supply network in order to render shield to transformers from harmful current. Offered Neutral Grounding Resistor comes with better features between the neutral point of the transformer and the ground, which Some features are below:

• Safety Screen for enclosures.
• Potential transformers.
• Neutral Grounding Transformer / Excitation Transformer.
• Supporting Pedestal structures.
• Stand off insulators.
• Aluminum enclosure instead of MS.
• Hot dip Galvanized enclosures.
• Stainless steel hardware.
• Earth fault leakage Relay.
• Termination kit.
• Cable gland.

Neutral Earthing Resistors are used to restricts the flow of current during an earth fault on an alternate current distribution system. The resistor is connected between the neural point of a transformer and earth or generator and earth. The neutral earthing resistors offer dependable protection every time whenever there is a fault. Neutral Earthing Resistor are used in power distribution, mining and industrial installations etc. The resistor is designed to tolerate most hazardous work conditions and atmospheric changes. Neutral Earthing Resistor is known for durability and reliability. Highlights: Resistance value pre-determined to operate fault-clearing relays and to prevent damages. System is designed as per to current and time ratings and compatible with the protection switch gear Resistance value is precise and determined and remains constant throughout life. Made from tough steel grids of a high quality iron-chrome-aluminium Non-corroding and offer good stability Mica and ceramic insulators Resistor in fully protected and ventilated steel enclosures

Buffer Resistors for application in cranes or other heavy machinery is offered. These are instrumental in starting and controlling the speed of AC or DC motors. Made up of stainless steel AISI-304, AISI-410 or AISI 430 or FeCrAl-AISI-406, these are non-corrosive & stable resistors. With rating varying from 2-10 minutes, it can be intermittent or continuous. The construct & configuration of buffer resistors are as per the IPSS-1-10-002-82 with amendment no.1 and BS 587 for starting/speed control resistor; IS 2147 & IS 12063 of 1987 for degree of protection for enclosure; IS 5 for paint shade and can meet other standards as required by client.

Clients can avail from us a wide range of Wire Grid Resistance that is widely used for earthing applications. It is precisely designed and manufactured with the aid of cutting edge technology from quality approved raw material. Provided product is employed in alternative current distribution networks and limit the restricted earth current to a safe value that flow from the transformer star point without surpassing specified temperature. The offered product is quality tested before delivery to ascertain their durability at clients end. In tune with the variegated requirements of our clients we provide this Wire Grid Resistance in various specifications.

• Resistance wire is would on ceramic insulator to form a coil for wire wound.
• Tapping can be taken at any place.
• These Resistors are economical for low current.
• Available in ratings of 1 Amp and above.Specifications:
  • Dissipation is negligible & the temperature rise for the resistor element depends on its capacity to store the energy generated in proportion to the mass & specific heat of the material used. Theses NGRS are connected between the neutral point of transformer / generator & the earth.
  • In Earth fault condition continuous current of 5 % to 10 % of full load current pass through the resistor due to unbalance in systems.
  • In Earth fault condition the Restricted earth fault current passes through the Metallic Resistor protecting the system till automatic protection takes place by absorbing the earth pressure, protecting the winding etc.
  • Hence these resistors are designed for allowing maximum heat dissipation
  Internal Features Of Resistor Enclosure

  Group of Resistance elements are mounted together to form a Bank. Banks are then connected in series or parallel to provide the current and ohmic value required.

  • All Resistance Bank to Bank interconnections will be done by solid stainless steel / copper.
  • In case of continuous current ratings for better heat dissipation, perforated sheet / jali with welded GI wire mesh is provided at the bottom.
  • Foundation channels have welded or bolted to the angle iron structure on two sides with arrangement to fix on foundation by bolts at site.
  • Terminals are brought through Porcelain bushings of appropriate voltage class or brought down as per requirement of customer.
  • In case of higher voltage, the banks are placed on stand off insulators housed inside the enclosures, or the enclosures is also insulated from ground by using stand off insulator if asked by customer
  TESTS(A) Routine Tests: - Following Tests Will Be Conducted.
  • Visual and Dimensional.
  • Insulation resistance value measurement by using 500V / 1000V megger before and after dielectric test.
  • Resistance value measurement with ???? 10 % tolerance.
  • H.V. Test of twice the rated voltage +1000 volts for voltage class below 660 volts or 2.25 times of rated voltage +2000 volts for voltages above 1100 volts.
  (B) TYPE TESTS :-
  • Temperature rise test i.e., Heat run test if required will be conducted by passing equivalent / rated current for rated / equivalent time keeping IT Constant through a part of Resistor.
• Technical Information:
  • Line to neutral voltage rate
  • Normally Full load current rate is same
  • System Voltage is divided by root3 i.e. 1.732.
  • Initial current flow through resistors when it is cold
  • Time length rate for NGR must tolerate rated voltage.
  • NGR construction includes resistor assembly, internal connections, plus required insulators, etc
  • Generally temperature rise rating is restricted to 375 deg.c. above ambient temperature as per BS-587. It can be 760 deg.c. as per IEEE-32
  • Normally 10 % of full load current is require for continuous functioning rate of neutral grounding resistor of 5 % to 10 % of full load current
  • Such resistor elements material are made from any stainless steel or FeCrAl or Cu-Ni or Ni-Cr or any other resistance material. Normally formed stainless steel element are best
• Information To Be Furnished To Us:
  • Material of Resistor
  • Ohmic Value
  • Current Rating
  • Duty rating 10 sec., 30 sec., 60 sec., & continuous etc.
  • If details against and cannot be given then inform details of transformer such as KVA rating, full load current, Primary & Secondary Voltage.
  • System voltage / operating voltage.
  • Type of Enclosure and material for enclosure ( protection class as per IS- 12063)
  • Location: Indoor or outdoor.
  • Temperature rise allowed over an ambient temperature.
  • Whether space heater, current transformer , isolating switch on load / off load, manually / motorised, or any other accessories are required. Details of atmospheric conditions at site and height above sea level

Buy various high quality Motor Control Resistors online globally in various models having high efficiency and longer service life as per changing market demands

We are offering Starting/Motor Control Resistors. For starting / Speed Control of A.C or D.C. Motors, resistors are manufactured as per customers requirement at specified starting torque or for limiting initial inrush current to an acceptable value. Mainly these are used for cranes. Rating can be 2 minute, 5 minute, 10 minute, continuous or intermittent. Material of resistor is normally Stainless steel AISI-304, AISI -410 or AISI 430 or FeCrAl-AISI-406.

• IPSS-1-10-002-82 with amendment no.1 and BS 587 for starting / speed control resistor.
• IS 2147 & IS 12063 of 1987 for degree of protection for enclosure.
• IS 5 for paint shade.
• Any other standard as required can also be followed.

• Visual and Dimensional
• Insulation resistance value measurement by using 500V megger before and after dielectric test.
• Resistance value measurement with 10 % tolerance.
• H.V. Test of twice the rated voltage +1000 volts for voltage class below 660 volts.

• Temperature rise test i.e., Heat run test if required will be conducted by passing equivalent / rated current for rated / equivalent time keeping IT Constant through a part of Resistor.

• Rotor volts at standstill.
• Rotor Current at full load.
• Duty rating (Time on / off No. of Cycles).
• Starting Torque in percentage of full load Torque.
• Material of Resistor.
• No. of steps / sections and its resistance values per phase.
• Type of enclosure (Protection Class as per IS-12063).
• Temperature rise allowed.
• Whether terminals should be brought down at one place.
• Details of atmospheric conditions at site.

• Rotor volts at standstill.
• Rotor Current at full load.
• Percentage (%) of slip required.

Engaged in offering Buffer Resistors online used in heavy machine applications and are non-corrosive & stable resistors in natureOurs is a coveted organization that is engaged in manufacturing, supplying and exporting premium quality Buffer Resistors. These are widely used in heavy machine applications such as crane of various types. Offered resistors are capable of controlling and monitoring the speed of both AC or DC motors. These resistors are appreciated for their non corrosive nature, stability and perfect finish. We have made these Buffer Resistors available in market for our valued patrons at market leading prices.

• The construct & configuration of buffer resistors are as per the IPSS-1-10-002-82 with amendment no.1 and BS 587 for speed control resistor
• These Buffer resistor are made up of stainless steel AISI-304, AISI-410 or AISI 430 or FeCrAl-AISI-406
• Resistor can be intermittent or continuous with rating varying from 2-10 minutes
• Buffer resistors are used for application in cranes or other heavy machinery
• Buffer resistor are non-corrosive & stable resistors in nature
• IS 2147 & IS 12063 of 1987 for degree of protection for enclosure
• IS 5 for paint shade and can meet client requirements

With that aid of technologically updated infrastructure and a team of diligent professionals, we are involved in manufacturing, supplying and exporting Punched Grid Type NGR. These resistors are applauded by our clients world wide for their easy installation, dimensional accuracy, safe usage, excellent protection and durability. The qualitative Punched Grid Type NGR is one of the most reliable sources for saving the whole electronic system from failure and collapse.

Our expert team of manufactures a spectrum of precision engineered products of Punched Grid Type NGR. We offer a gamut of designed products with high performance, latest technology, reliable and durability. Along with superior products quality, the company is preferred for its efficient post-sales services. The service engineers provide required services within committed time period for the products.

• Grids are punched out of AISI 304 / AISI 430 type stainless steel sheets or AISI - 406 i.e. FeCrAl Sheets.
• Temperature coefficient resistance is 0.094% per degree C for stainless steel AISI -304 & 0.15% per C for FeCrAI i.e. AISI -406
• Connection between the adjacent grids can be of following type :-
• (A)Adjacent grids will be connected by using galvanized Nut-Bolts using spring washers.
• (B) With Tig welded joints, which are totally secured against intense vibration.
• Terminals can be brought down at the bottom for ease of connection if asked.
• Each grid element is supported on Tie rods. Hence the assembly of resistance unit becomes very sturdy and it can absorb intense vibrations. Grids are insulated from M.S. tie rod by using Mica tube.
• Galvanised / Aluminium pipe / MS Washers will be provided as spacer between grid elements and the same will be insulated from grids by using Mica washers.
• These grids have wide range of current rating varying from 10 Amps to 200 Amps. of breakage of epoxy link at site.

Since 2004, we have been manufacturing, exporting and supplying Neutral Grounding Resistor. Under the proper observation of our experts, the offered resistor is manufactured by utilizing fine grade components with the aid of modish techniques. This resistor is extensively used in industrial power system for the purpose of grounding transformers and generators. Furthermore, the offered NGR can be availed from us at reasonable rates. Basically, Neutral Grounding Resistor is a resistance that is linked between neutral points of earth and transformer.

• Eliminates various problems such as transitory over, lower voltages, inverse flash, inadequate current flow and others.
• Gives protection to transformers from damage and burning.
• The ohmic value remains constant, even if the temperature rises.
• Reduces the potential ground-fault current to a predetermined value.
• Also named as Earth Fault Protection, this prevents fault damage.
• Employed for earth fault protection in the many of the medium voltage electricity generation as well as distribution systems.
• Offers the best choice in terms of quick response to figure out the setback.
• Prevents and minimizes the overheating and mechanical stress on the conductors.
• Permits to hold down the ground faulty current for a short period of time to promptly discover the fault, besides protecting the transformers.

• Rated Voltage : For NGR rated voltage means line- to neutral voltage i.e. System Voltage divided by root3 i.e. 1.732.
• Rated Current : Means Initial current that will flow through resistor when it is cold. Normally Full load current value is same as Rated current.
• Time Rating : It is length of time for which NGR must tolerate rated voltage.
• Short Time Rating : Normally it is 10 sec. or 30 sec. or 60 sec. depending on design parameters of protection system. IS-3043 recommends 30 sec. rating.
• Continuous Rating : It is normally 10 % of full load current for healthy system NGR to be designed for continuous rating of 5 % to 10 % of full load current (if required).

Our range of NGR For Transformers does not need continuous monitoring or maintenance and is directly connected to the MV & LV supply network in order to render shield to transformers from harmful current. Offered Neutral Grounding Resistor comes with better features between the neutral point of the transformer and the ground, which Some features are below:

• Safety Screen for enclosures.
• Potential transformers.
• Neutral Grounding Transformer / Excitation Transformer.
• Supporting Pedestal structures.
• Stand off insulators.
• Aluminum enclosure instead of MS.
• Hot dip Galvanized enclosures.
• Stainless steel hardware.
• Earth fault leakage Relay.
• Termination kit.
• Cable gland.