Resistance Boxes Dealers

Resistance box (plug type) is of a superior quality heavy brass metal blocks size 716" are bound to bakelite plate by means of nuts and screws securing rigid fixation and eliminating any chance of contact error creping due to loosening of plugs and lugs which are cut to fine taper and are interchangeable.plug heads are machine moulded, of heavy insulated bakelite in beautiful shapes the boxes are made of teak-wood and nicely polished. We are renowned as one of the staggering high power resistance box suppliers in india great care is taken in preparing the wire wound resistance. Selected double covered eureka wire is wound in bakelite spools. Sufficient ageing and heat treatment is processed through to avoid any moisture effects. Solder joints are sealed after calibration the decade resistance box is calibrated on imported testing bridge accuracy + 0.1%.

The Resistance Boxes are used for heavy duty requirements of controlling the current in the circuit for various applications. Starting and speed control of AC Slip Ring motors with Resistors is a universal method. The resistor is used to limit the inrush current and control the torque and speed characteristics of an AC Slip Ring Motor.By changing the resistance in the Rotor Circuit in various steps (thru a Contactor), the starting torque and speed of the motor can be controlled to the desired value.     APPLICATIONS : • EOT CRANES & WINCHES • RUBBER MILLS & FLOOR MILLS • COAL MINES & SUGAR MILLS • STEEL PLANTS & CEMENT PLANTS • POWER PLANTS & PAPER PLANTS

We are offering resistance box. resistors are designed to meet requirements of both a.c. & d.c. Applications. The basic types of resistors are stainless steel ( grade - 304) and punched steel resistors. These are manufactured for current rating from 10 to 800 amps. Continuous resistors of higher ratings are manufactured using 2 or more parallel paths. Resistors with short time rating up to 3000 amps or evenmore for neutral earthling are possible which suitable for system voltage upto 11 kv and above. applications: e.o.t. Cranes, rubber mills, steel mines, cement mills, power plants, conveyors, coke oven, blowers etc. For speed control and developing starting torques. dynamic breaking resistors for v.v.v.f.a.c drives resistors are manufactured : 1. Air cooled type 2. Oil cooled type stainless steel grid resistors: these resistors consists of stainless steel wires or strip in form of grids. The current rating generally ranges from 7 amps to 400 amps continuous with multiple or single paths. punched steel grids resistors: he resistors consists of grids punched from correction resisting nickel chromium alloy sheet steels. The punched steel grids. The punched steel grids are completely immune to shock vibration. They function reliably under the worst operating conditions and are particularly suited for steel mill duty. These resistors are available in wide range of current rating from 8 amps to 800 amps continuous with single & multiple parallel paths.

Resistance Boxes are used to add resistance into an electric motor circuit for modifying the performance characteristic of slipring induction motors of EOT cranes, rubber mills, steel rolling mills, cement mills, power plants, conveyors, coke oven, blowers etc. or speed control and developing starting torque with low starting currents. They are also used as Dynamic breaking resistor for V.V.F.A.C. Drives, electric loading of ac alternators, de generators and dynamometers. Resistors are designed to meet requirements of both A. C. & D. C. Applications.

For accurate work, in polished wooden box and panel figured in white. Split brass contact blocks hold precision cut, interchangeable plug having moulded black fluted tops. Coils of constantan wire, double silk covered are wound co-efficient. Accuracy + 0.1%.    

Resistance Box provides accuracy in different OHMS, in polished teak wood box and Bakelite panel figured in white. The Resistance Box has a split brass contact blocks hold precision cut and an interchangeable plug having molded black Bakelite fluted tops. Coils of Constantine wire, double silk covered are wound co-efficient in these Resistance Boxes. Coils are connected with double nut system in Resistance Box.

We have carved a niche as one of the dominant Punched Steel Resistance Boxes Manufacturers and Exporters based in India. With the use of crane control tools, we make available Resistance Boxes that are designed for both A.C. & D.C. applications. Our Resistance Boxes are used in winches, E.O.T Cranes, Rolling Mills, Steel Plants, Flour Mills, Cement Plants, Power Plants, Coil Mines etc., for speed controlling and developing of higher starting torque.Details : In this case the resistor grids consist of corrosion resistant stainless steel wire or strips. Current rating generally ranges from 7 Amps to 80 amps continuous Higher ratings are possible by using multiple parallel paths. The size of the wire is determined based on the technical data of the motor on which the Resistance Box is to be connected The drawn resistor material is uniform in section and free from any flaw or unevenness which is likely to cause local heating Suitable sizes of strips / wire are employed to give a wide range of current ratings The Grids are supported in such a way that the adjacent Grids cannot touch each other even under the most severe conditions of service The resistor elements consists of a continuous length of resistance wire or strip of uniform section formed into the required number of loops and bent so as to form frames with flanged edges similar to an element

We are a well-known Trader & Supplier of Resistance Boxes, based in Uttar Pradesh (India). These Resistance Boxes are used for both AC and DC application and also for controlling and developing higher torque applications. These Resistance Boxes are available with us at the most competitive prices. The grids are made from stainless steel and punched steel sheet which are suitable for maximum temperature. Used In E.O.T. cranesRolling millsSteel plantCement plantCoil minesPower plantFlour mills

We provide Resistance Box of two types which are Plug Type Resistance Box and Educational Quality (Routine Quality) Resistance Box. The Resistance Box we provide is of high quality and manufactured using optimum quality parts and components. Plug Type Resistance Box CoilNon inductiveEnclosed in a teak wood polished caseHeavy Bakelite top & rectangular brass blocksPlugsOval grips on perfect ConstantInterchangeableResistance Values : Engraved on the plate or on the top of brass blockQualityConstanta coil Precision qualityconsisting of 1/2" thick brass block0.1 to 1 ohms0.1 to 5 ohms0.1 to 10 ohms0.1 to 50 ohms0.1 to 100 ohms0.1 to 500 ohms0.1 to 1000 ohms1 to 10 ohms1 to 50 ohms1 to 100 ohms1 to 500 ohms1 to 1000 ohms1 to 5000 ohms1 to 10000 ohms Educational Quality (Routine Quality) Resistance Box Has a rectangular routine brass block of 10.5 mm.ThickCan be supplied in round block also0.1 to 1 ohms0.1 to 5 ohms0.1 to 100 ohms0.1 to 500 ohms0.1 to 100 ohms0.1 to 500 ohms0.1 to 1000 ohms1 to 10

Resistance Boxes supplied by us are used for developing starting torque for the motors of EOT Cranes, Winches, Rubber Mills, Conveyors, etc. We supply air cooled as well as oil cooled Resistance Boxes manufactured out of corrosion resistant nickel chromium alloy steels. Their punched grid resistors are completely immune to shock and vibration. Resistance Boxes function reliably under the worst operating conditions and are particularly suitable for steel mill duty. Wire grid Resistance Boxes are also supplied by us. Apart from the application, motor rotor volts and rotor amps are necessary for designing the Resistance Boxes appropriately. Why Our Resistance Boxes? Offer cutting edge performanceAccurate dimensionsMade with high quality componentsDurable