M/s Enterprising Engineers Govind Pura, Bhopal, Madhya Pradesh

Construction of Vapromatic Type Liquid Rotor Resistance Starter :- The LRS (V) is a rectangular tank having electrolyte in it and works on the principle of resistance cutting based on different resistivity of electrolyte at different temperatures. The tank will be constructed from heavy gauge sheet steel and have enclosure protection of IP-42. The electrodes will be of zinc passivated M.S. suitably supported with insulator and bushings to sustain stress at the time of external faults. The fixed electrodes are mounted at the bottom of the tank and adjustable electrodes will be mounted at the top of the electrolyte tank through insulating bushing. The inside surface of the electrolyte tank will be painted with anticorrosive epoxy paint. Polypropylene phase barriers will be provided to prevent circulating current between the electrodes. Also the metallic resistance used for bringing the motor from 80% speed to rated speed would be mounted in a separate chamber which would be able to dissipate the generated heat. The tank will have accessories e.g. drain valve with brass plug at the bottom, separate plug for filling of electrolyte etc. Painting will be done by Hand Spray Gun M/cs with approved paint shade.Main supply will be of 415 Volts and control supply for LRS (V) will be 230 or 110Volts and accordingly contactor coils would be of 230 or 110Volts only. Initial position and full speed position indicating contactors each having 2NO and 2NC potential free contacts will be provided for sequence interlocking. Electrolyte level and temperature sensor with alarm and trip contacts will be provided for sequence interlocking.The LRS (V) will be complete with ample sized cable box and will be suitable for termination of PVC/XLPE Aluminum conductor cable. The terminal box will have detachable gland plate.Control Panel having Switch-gear Components as :- Temperature and Level Sensors. Initial and Final position contactors with multiply contacts. Two nos. of Electronic Timers of ‘Reputed make’, one for adjusting the time for Motor to reach up to 80% speed and other one is used if final shorting contactor is not operated after predetermined interval. Adequate rating and quantity of Step & Final Power contactor of ‘Reputed make’ for smooth cutting of resistance and for final short-circuiting. Control Transformer (415V/230 or 110V) with control fuses (if required). Indicating Lamps (LED type) and TBs. Interlocking for LRS (V) : Motor would be ready for starting in RFS (Control Supply Healthy, Temp. within Limits). Zero Position (RFS, both shorting contactors in un-operated position) Final Position (If motor shorting not done in predetermined interval) The Potential Free Contacts are required for Interlocks with: HT/LT Panel : HT/LT to Trip & Start Signal DCS : LRS (V) Healthy, Resistance IN/OUT, Liquid Level Low, Liquid Temp. High Indications (with LED type Lamps : Ready to Start Zero Position LRS (V) in Service Liquid Level Low Liquid Temperature High. Terminal Blocks : All LRS (V) units will be provided with separate Terminal Blocks for termination of wires for External Connections.Inspection and Testing : All routine tests and temperature rise tests as per relevant British Standards & IS.

Self standing type, equipment mounted and wired rear opening, type tested up-to IP-55.

Weight : 100-1000kg

Max. Voltage : 220V-380V

Automatic Grade : Semi Automatic

Driven Type : Electric

Our Power Control Centres & Distribution Boards are appreciated globally for their extreme performance and reliability. Our expertise have designed them with separate compartments for Control, Relay & Metering apparatuses with full width cabling chamber at back and ACBs in fixed or draw-out execution.Applications : The Power Control Centres & Distribution Boards manufactured by us are widely used for the several applications in various industries: For L.T. Switchgears to Control and Distribute power. Power Stations Large Industrial Plants & Process Industries etc. Features : Horizontal and Vertical bus bars supported on DMC/SMC Insulators are housed in totally enclosed compartments to prevent dust & vermin. Electrolytic grade Aluminum alloy bus bars are provided with heat shrinkable PVC colored sleeves. Single or Double front for specific requirement. Exceptionally large PCCs are built in convenient sections with lifting hooks on top.

Frequency : 50Hz-60Hz

Feature : Sturdy Construction, Superior Finish

Automation Grade : Semi Automatic

We manufacture neutral grounding resistor (NGR) as per customer's specifications & requirements . NGRS are used in ac distribution networks to restrict earth fault current to a predetermined level. Resistance grounding of transformer or generator neutral star point is the most effective and preferred method.

Frequency : 50Hz-60Hz

Usage : Used in Ac Distribution Networks to Restrict Earth Fault Current to a Predetermined Level

price range from 2lac to 15 lacs inr. $3,000 to $15,000 lrs, vlrs, grr, grs.

Direct on line & star - delta motor starters complete with indication and measuring instruments and protection relays. Totally enclosed in dust and vermin proof sheet steel enclosure suitable for floor or wall mounting.

Type : Motor Starters

Material : Metal

Application : Motor Switching

Voltage : 220V-380V

Frequency : 50Hz-60Hz

Feature : High Performance, Stable Performance

This extensive range of Electric Control Panel has been manufactured for Controlling Electric Motors & other Equipments from a Central Location. Our expert team of engineers has designed these devices to handle Switching, Protection, Isolating, Distribution & Control Functions. This range of high-tech Electric Control Panel has been implanted with self aligning power & control terminals. These devices are immensely used in Power Plants, Cement, Paper, Steel, Fertilizer, Petrochemical & other industries.Features : Drawout modules provided with self aligning Power & Control terminals. Contacts Silver Plated & Spring loaded to ensure adequate contact pressure to ensure long life. Service, Test & Isolated positions are clearly indicated. Gravity operated safety shutter operates automatically when module is withdrawn for added safety. Swing out instrument panel enabling the operator to read out and reset the relays. Cable Alleys with ample space segregated from Feeder Sections for power & control cables. Single or Double front for specific requirement. Exceptionally large MCCs are built in convenient sections with lifting hooks on top.

Type : Drawout And Fixed

Voltage : 220V-380V

Automatic Grade : Semi Automatic

Power : 1-3kw

Power Source : Electric

This is the basic unit of our interlocking system. These locks consist of a mechanism housed within a brass body. A shaft of round or square cross section is projected from the rear of Lock-body. The lock is operated by inserting and rotating a special key in the lock. Standard Lock with 90°, 65°, or 45°, clockwise or Anticlockwise rotation can be supplied. In these, key is free only in one position. In another position it is trapped in the lock.The lock of one particular combination can be operated by the key of that combination only. The locks can be provided with spring loaded caps which will prevent ingrees of dust when key is out. Key can also be fitted with rubber caps to prevent entering of dust when key is trapped inside the lock.

Application : Industrial Machine Use

Color : Metallic

For transformers, switch yard and other equipments, self-standing type / equipment mounted / wall mounted types, front or front and front and rear opening. type tested IP-55.

Country of Origin : India

Type : Marshalling Kiosk

Material : Metal, Steel Sheet / Aluminium Sheet Fabricated)

Shape : Rectangular

Application : Industrial

Feature : Fine Finished, Reliable

Voltage : 220V-380V

Power Source : Electric

A consists number of basic units type DL locks fixed to a steel box. The box houses a mechanism arranged such that certain keys are wrapped when others are removed. Its simplest form a control key is trapped until all other keys have been returned to their respective exchange box locks and turned to their trapped positions. The control key can then be removed, wrapping all other keys. Number of such key-exchange boxes can be kept in sheet steel door enclosure box. The design of this box has been tested at CPRI Bangalore and it ensures IP 55 protection

Type : Out Side Control Lock With Several Front Locks

Weight : 0-5Kg

Color : Metallic

Finishing : Polished

Width : 0-50cm

Grid Rotor Starter Panel (for starting duty) will be made-out/fabricated by 2mm thk. CRCA MS sheet steel, dust & vermin proof construction, front operated, self supported, free standing, floor mounting type, external & internal surfaces cleaned by chemical treatment, duly spray painted with approved paint shade.Grid Rotor Starter Panel (for starting duty) will be provided ‘Reputed make’ adequate rating & nos. of AC3 duty Air Break Power contactor for Final short-circuiting & Step Contactor for smoothly cutting of resistance and adequate rating & nos. of Timers of ‘Reputed make’ and a set of SS Punched type Grid resistance elements to provide smooth cutting of resistance in required steps in rotor circuit of motor thereby reducing the starting current & increasing the starting torque, for final short-circuiting the resistance when motor attains full speed/to start the motor. It will have Interlocking arrangement/circuit for your/consignee’s Stator control panel, so that, Main motor can not be started unless resistance is in fully ‘IN’ Position. The Grid Rotor Starter Panel (for starting duty) will have all the circuit elements in line to meet Technical requirements to start the motor Locally & Automatically.

Weight : 100-1000kg

Power : 1-3kw

Power Source : Electric

It will have two units, free standing, floor mounting type made out of heavy gauge MS Sheet & painted with Primer & 2 coats of anti-corrosive paint.One Unit :It will have two Compartments i.e. Contactor Panel & Resistance Box. The Contactor Panel will be dust & Vermin proof & will house required Power Contactors to switch ON & OFF the Resistance Banks to attain required speed. The Resistance Box will be well Ventilated type & will house Resistance Banks. The Grid Resistance units will be made of SS Punched plates with high thermal capacity and temperature-rise up to 300°C over an ambient of 50°C. The Resistance unit will be assembled in Banks with good porcelain & other insulated material. The construction & mounting of Resistance Banks will be easy to maintain & replace. The Resistance Box & Contactor Panel will be mounted back to back in one unit. The connection between the Resistance Box and Contactor Panel as well as between Resistance Banks & Power Contactors are done by copper flats of sufficient cross-section. It will be provided suitable rating Air Break Power Contactor (AC 3 duty) of ‘Reputed make’ (in delta connected) to suit the RA of motor. It will be suitable for controlling speed from 60% to 100% as 1.25% speed variation per step in total 32steps.Second Unit :It will be Control Panel/Speed Selector Panel free standing, Floor mounting, dust & vermin proof. It will house the necessary control units like Aux. Contactors, Timers, Overload Relays, Indicating Lamps, Push Buttons etc. The Mini PLC used for setting of Logic controls of different speeds.Construction :Sheet Steel Clad, free standing, floor mounting type made out of 2mm. thick sheet with suitable angle iron reinforcement. The paint finish will be Light Grey 631 of IS:5. The Grid Resistance Regulator Panel basically comprises of 2 portions, the Resistor unit and the Contactor Panel. The Resistor unit is attached to the back of Contactor Panel and comprises Grid Elements assembled in the form of banks, stacked one above the other. All the Grids will be housed in this panel. The top will be covered with weld mesh only. Hot Air outlet ducting if required, has to be arranged at top by you. The Power Contactor Panel houses the Rotor Contactors suitably interconnected with adequately rated copper jumpers. A Bus Bar arrangement to connect 4-6Nos. Rotor Cables will be provided at bottom of panel with a suitable clearance from gland plate. The inter connection between Resistor Cubicle and Contactor Cubicle will be done through epoxy insulated wall mounted bushing sealed with gaskets. Proper heat shield arrangement will be made to see that heat transfer does not take place from Resistor Cubicle to Contactor Cubicle. The ‘make’ of Switch gear components will be of reputed make like C&S, L&T, GE, BCH, ABB, Siemens, TC etc.Cooling Blowers :Cooling Blowers are of either Axial or centrifugal type. The MS Impellers are balanced on a dynamic balancing machine to avoid vibrations. The air output will be as per the requirement of each equipment. While erection, the foundation has to laid separately for blowers and the foundation from blower to panel has to be made through canvas bellows. It is prevent the vibrations of blowers getting transferred to GR Panel.Tests to be conducted :1. Sequence/Operational-Functional Test as per Schematic/Wiring drawing. 2. Megger Test between Phase to Phase & Phase to Ground by 500 V megger. 3. High Voltage withstand test of 2.5KV for 1 minute on Control Circuit.

Electric Control Panel has been manufactured for Controlling Electric Motors & other Equipments from a Central Location. Our expert team of engineers has designed these devices to handle Switching, Protection, Isolating, Distribution & Control Functions. This range of high-tech Electric Control Panel has been implanted with self aligning power & control terminals. These devices are immensely used in Power Plants, Cement, Paper, Steel, Fertilizer, Petrochemical & other industries.

This interlock consists of two separate parts. One part is the basic interlock fixed on a Brass / Aluminium Body housing the mechanism. Another part is a sliding Bolt. When the sliding bolt is inserted in the main body and key is removed, the sliding bolt will remain trapped in the main body. To release the sliding bolt key should be inserted in the lock. This will release the bolt & trap the key.

Application : Door Lock

Color : Metallic

Speciality : Light Weight, Durable

Surface Finishing : Polished

Thickness : 3-5mm

Type : DT1 & DT2

It will be having MS Electrolyte tank, floor mounting, free standing type, dust & vermin proof construction. It will be provided Fixed & Moving electrodes made-out by MS Sheet Steel having horizontal movement, Anti-corrosive Epoxy black paint (inside the electrolyte tank walls), Phase barriers of polypropylene, Mechanism box, Power/Shorting Contactor/Cable Box and all other accessories for motorized as well as manually operation. Integral Control Box of suitable size (housed with main MS tank of LRS) will be provided & it having RDOL Starter of suitable rating Aux. contactor for reversing & forwarding Pilot motor & Moving electrodes, Over load relay, Key actuated Auto/Manual selector switch, Push button, Isolating switch, Indicating lamps, Power/Control TBs & necessary back-up protection etc. It will have Interlocking arrangement/circuit for Stator control panel, so that, Main motor can not be started unless resistance is in fully ‘IN’ Position. It will be provided AC3 duty Air Break Power contactor of ‘Reputed make’ (in delta connected) to suit the RA of motor for final short-circuiting the resistance when motor attains full speed. It will have provision for Manual operation, also.POINTWISE TECHNICAL SPECIFICATION LIQUID ROTOR RESISTANCE STARTER : The Liquid Rotor Resistance Starter conforms to BS-140. It is totally Automatic Motor Operated and also, having Manual operation with the help of hand wheel. Electrolyte Tank will be made-out by MS sheet steel of 3mm to 5mm thick and other fabrication will be made-out by 2mm thick MS Sheet Steel. Epoxy Black Paint (for Anti-corrosion) will be done inside the Electrolyte Tank. Polypropylene Phase Barriers will be provided. Movement of Moving Electrodes will be Horizontal type. It is suitable for two consecutive starts from cold & four starts per hour equally spread in hot conditions. Limit Switches for Interlocking purpose with spares contacts will be provided. Moving & Fixed Electrodes will be made-out by MS Sheet Steel (zinc plated) of 3mm to 5mm thick. Electrolyte filling & over flow sockets will be provided. Air Break Power Contactor (AC3 duty) of ‘ABB/BCH/L&T make’ will be provided in delta connected to suit RA of motor for Final short-circuiting. Integral Control Box of suitable size (housed with the Main MS Tank of LRS) will be provided. It will have RDOL Starter having suitable rating Contactor for Forwarding & Reversing Pilot Motor & Moving Electrodes, Over Load Relay, Key Actuated Auto/Manual Selector Switch, Push button, Isolating Switch, Indicating Lamps & Power/Control TBs. Pilot Motor of ¼ HP Squirrel Cage type of reputed make will be provided. All the Switch-gear components will be of reputed make. It will be suitable for interfacing with consignee’s Stator Control Panel. Standard time of resistance cutting is depending upon the rating of motor. This time can be suitably changed to suit Main Motor. The Interlocking arrangement will be provided for Stator Control Panel. The Interlocking is such that the Main Motor can not be started unless Resistance is fully “IN” position & the Main Motor will be Tripped, if the Electrodes does not reaches to Run Position within specified time. Painting will be done by Hand Spray Gun M/cs with Light grey 631 of IS:5. Necessary cable glands and lugs can be provided at an extra cost. Electrolyte/Water level indicator & Temperature indicator cum controller with alarm & trip contacts will be provided at an extra cost. In the event of ordering all related drawing like GA, BOM & Schematic diagram etc. will be submitted for getting approval before start manufacturing work.& procuring of major Switch gear items of reputed make.

Buffer Resistance panel will be made-out by 2mm thick CRCA MS sheet steel, free standing, floor mounting, dust & vermin proof construction, indoor type, external & internal surfaces cleaned by chemical treatment, duly painted with approved paint shade. The Buffer Resistance panel having a set of Punched SS grid resistance cont. rated for the RA of the motor with a max. temp rise of 375 to 400oC and having an adequate ohmic value/ phase to run the slip ring motor at 15% slip regulation/regulator.

Material : MS Sheet

Thickness : 0-10mm

Color : Metallic

We are offering Auto - Transformer Starters.Our in house quality testing team performs various quality checks on each of our product to ensure only the most reliable and quality product reaches to our valued clients. Fully Automatic Auto Transformer Starter with adequate nos. of tapping suitable for starting of Squirrel cage Induction motors of 415Volt, 50Hz AC supply. ATS will be constructed/fabricated with 2mm thk. MS sheet steel, dust & vermin proof, dam & drip-proof, front operated, self supported, free standing type constructions. ATS will be duly spray painted with approved paint shade and accommodate all switch-gear items required to meet the technical requirements as per attached Annexure-Bill of Materials of ATS.

Application : Switching Use

Feature : High Quality, Simple Usage

Max Current : 5-10amps

max voltage : 220-380V