Sensors India

Patel Nagar, Delhi

TRACKING INDEX TEST APPARATUSTRACKING INDEX TEST APPARATUS As per IEC : 60112

TheTRACKING INDEX APPARATUS from Sensors India was designed and manufactured to perform the test specified in the normIEC 60112(Method for determining the comparative and the proof tracking index of solid insulating materials under moist conditions) and many others standards ( ASTM D3638 12 , IS 2824) to determine compliance with safety requirements related to solid insulating materials under moist conditions. Itis designed to determine the resistance to tracking in insulating parts supporting live parts used for electrical accessories such as MCBs, switches, sockets, plugs etc. Using this test apparatus Proof Tracking Index Test and ComparativeTracking Index Test can be conducted with test results complete logging in excel file.

The inner body of the apparatus is made up of stainless steel & outer body is made up of mild steel. The reset switch is also available on the panel, where you can preset the desired no. of drops as per requirement. Tracking test indicates the relative resistance of solid insulating electric materials when submitted up to required test range. This method exposes the tested object to electric stress under water action with contaminant addition tracking may occur during test when voltage is activated on a defined disposition of electrodes on the material surface and electrolyte drops of salt solution are injected during a definite interval of time. The number of necessary drops to cause damage on the material increases with the reduction of the applied voltage. Under a critical value, tracking does not occur.

Distinctive Attributes

• User Interface is very friendly
• Voltage as per standards required
• Current range with control
• Current and Voltage Digital Display
• Drop control and counting arrangement digital with Peristaltic Pump

Cord Retention Test Apparatus for Plugs and portable socket-outlets shall be provided with a cord anchorage such that the conductors are relieved from strain, including twisting, where they are connected to the terminals or terminations, their covering being protected from abrasion. The plugs attach with cable and connector is subjected to pull test as per IEC 60884 standard. The plug is loosely hung from the fixture and a dead weight is attached as per the IEC 60884 standard.

In Cord Flexing Test Apparatus braided cords may be used. Polyvinyl chloride sheathed cords are only allowed for the connection to the supply mains of stands of cordless irons and for the separate water reservoir or boiler of steam irons. Polyvinyl chloride cords are not allowed for cordless irons that may also be directly connected to the supply mains during ironing

Instead of the load specified for the cord, the cord is loaded with a mass of 2 kg. Instead of the number of flexing specified, the number of flexing is 20000. The test is not carried out on cordless irons unless the iron can at so be directly connected to the supply mains during ironing.

For steam irons with a separate water reservoir or boiler, the test is made on the steam hose and the interconnection cord together. If they are contained in one sheath or otherwise attached to each other.

Sensors India, designs auto components and auto accessories testing system to audit quality and reliability of accessories, such as plastic molds, electrical and environmental severity.

The test equipments includes:

Electrical Reliability

Insulation Resistance TesterHigh Voltage Break-Down TesterContinuity TesterContact Resistance TestEndurance Test Horn And Bulbs

Mechanical Reliability

Endurance Test for Ignition Auto lockEndurance Test for Fuel CockEndurance Test SwitchesEndurance Test Combination SwitchesEndurance Test for Mirror TiltingEndurance Test Door Lock & StoppersImpact Test SystemAbrasion Test Apparatus

Environmental Test Chambers

Heat Cool Test ChamberCorrosion Test ChamberHumidity Test ChamberDust ChamberWater Spray Test ChamberHi-Pressure Water Spray Test ChamberU V Test ChamberHeating OvenCold Chamber

The Sensors also provides custom designed test solution with complete PC interfacing and logging.

CRITICAL OXYGEN INDEX TEST Apparatus to determine the minimum concentration of oxygen that will just support flaming combustion of plastic materials such as polymers, cables, rubber, nylon, laminates, paints, surface coating etc. in a flowing mixture of oxygen and nitrogen, in conformity with ASTM D-2863, BS 2782 PT-141, and ISO-4589.

Oxygen Oxygen percentage : 0100%Resolution : 0.1%Accuracy : 0.5%

All Stainless Steel construction including Control Box Controls : Solid State Gas Distribution & Control : SMPS based Power Supply to enable operation over a large Supply range 200-250V/ 90125 Volts Ac, , single phase

Oxygen Sensors : Imported O2 Sensor with special filter (4 micron) and precision gas regulator with locking facility for long life of sensor and reliable measurements.

Applications: The test method of the critical oxygen index test apparatus covers a fire test response procedure which is for measuring minimum concentration of oxygen in a flowing mixture of oxygen & nitrogen that will just support the flaming combustion.

The striking element has a hemispherical face of radius 10mm made of hardwood, polyamide or similar material weighing 0.15kg. It is rigidly fixed to the lower end of a steel tube with an external diameter of 9mm and thickness 0.5mm which is pivoted at its upper end in such a way that it swings only in the vertical plane of the axis of the striking element. The axis of the pivot is 1m above the axis of the striking element. The design of apparatus is such that a force between 1.0 N and 2.0 N has to be applied to the face of the hammer to maintain the pendulum in a horizontal position.

The appliance is held against a solid wall of bricks, concrete or the like, and the test apparatus is so arranged that the pivot of the pendulum is vertically above the point of impact of the hammer. The striking element is then allowed to fall form such a height of 250 mm. Three such blows are applied to every part of the enclosure which is likely to be weak, including handles, levers and the like, but excluding signal lamps and their covers if these do not protrude from the enclosure by more than 3mm or have a surface not exceeding 3 cm². Lamps within an appliance and their covers are tested only if they are likely to be damaged in normal use.

GLOW WIRE TEST APPARATUS is intended for testing the flammability and ignitability of components and materials. Thisequipment is designed as per requirement of IEC:60695-2-10, IEC:60950-1, IEC:60335-1, IEC:60884-1, IEC:60238, IEC:60695-2-11, IEC:60695-2-12, IEC:60745-1, IEC:60400, IEC 60730-1, IEC:60598-1, IEC:61050, IEC:60320-1, IEC:61058-1, IEC:60742, IEC:60669-1, UL 746A, BS EN 60695-2-1, BS 6458, NF C20-921-1, IS:11000, ASTM D 6194-03Fire hazard testing- part 2test method section 1, Glow wire test and Guidance.Nickel / Chromium (80: 20) Glow Wire, 4 m.m. in diameter, as per standard.

Apparatus

Glow Wire Test Apparatus consists of fine wire thermocouple, 0.5 mm diameter Cr/Al OR 1.0 mm Sensing Thermocouple. Sensing Thermocouple is also being supplied as per ASTM D 6194for measuring the temperature of the Glow Wire. The equipment is simulated thermal stresses that are produced by sources of heat or ignition for short periods. When insulation is subjected to abnormal condition & can become a fire hazard.

Fully Automatic Glow Wire Tester

Besides the Conventional Glow Wire Test Apparatus a new model with complete automated Glow Wire Tester having touch screen and complete PLC control and monitoring for Time, Flame time, Force, Current and Exhaust time etc is also designed by Sensors India.

The testing device consists of a loop of resistance wire, electrically heated to the for high temperature specified for the relevant standards and maintained under specified pressure & time. A PID digital temperature indicator with controller. The range of this control is 1000 Deg C. An auto current source use also provided with a CT operated ammeter, which is capable of delivering up to 150A for heating in loop. Besides that moving specimen holder trolley is pre-loaded with a force of 0.8 to 1.2 N against Glow Wire. Mechanical stopper limits movement of the tip of The Glow Wire in to the specimen to maximum permitted with scale to measure penetration depth. Digital timer for application and flame time adjustable clamp for holding the specimen under test & Scale for measuring flame height is also provided. Our apparatus provides excellent temperature control.

This apparatus is used for testing resistance to fire for Bakelite and other parts. This instrument shall be supplied without Gas.

Range: 0-300C or 750C as per standards requirement with digital temperature indicator and controller.

APPARATUS

This is designed as per IS: 3144 and IS:302 with following construction details

• HI ALUMINA tube furnace.
• Stainless steel enclosure for furnace.
• PID self tune controller for temperature.
• Accessories Switches and Circuit breakers are fitted in front Panel
• Ceramic Cone.

The apparatus is designed to measure the smoke density from the burning or decomposition of plastics as per the requirement of the ASTM D 2843 standard. The apparatus consists of smoke chamber and control console. The white background will permit observations of the flame, smoke and burning characteristics of the material. The viewing of the exit sign help to correlate the visibility and measured values. The specimen is supported on a 64 m.m. base and is equidistant from all sides of the chamber. The screen will lie on a stainless steel bezel supported by a rod through the right side of the chamber. From the same rod a similar bezel located.This rod supports a square of asbestos paper which cactus any material that drip from the specimen during the test. By rotation of the specimen holder rod, the burning specimen is quenched in a shallow pan of water positioned below the specimen holder. At the above location and out side the chamber tubular boxes containing the light source with necessary lens and mirror on one side and a special photocell with a set of baffles to prevent stray light, on the other side are provided. The light source is fitted inside the tubular box on the left hand side of the chamber. The source consists of a lamp with a regulated power supply fitted with a reflector mirror, and a converging lens. The reflector lens arrangements make the light beam on the photocell housed in the right hand side box. The percentage of light absorbed will be displayed through a linear amplifier digital electronic photometer with 0% to 100% absorbency scale with auto calibration system.

Drop test apparatus as per IEC: 60335-2-3 having arrangement to drop the Iron form required height(Duly adjustable cam with demarcation for fall) onIron plates @ required falls per minute, (variable drive for change in falls per minute easy to adjust accurately) duly fitted with socket and switches.

The test system consists of failure detection, in case of appliance fails the falling system will stop. The machine is operates through a TEFC FHP motor and heavy-duty gearbox very part of apparatus is machine made and duly finished in chrome and powder coated. Geared motor, to drive the lifting device Digital 6-digit counter is fitted in machine to count the Falls / drops per minute with memory feature.

Falling assembly consist of mounting arrangement fastening the specimen, with a camof 40 m.m. (Duly adjustable cam with demarcation for fall). Switch-gear, with main switch, fuses and preset number of strokes with complete safety box made of aluminum section and poly carbonate box with vent and latch switch. With Iron failure detection system. The apparatus is fully equipped with required accessories, indicating meters and counter.

Specification

• Inner chamber Stainless steel and heaters are clamped to its side wall.
• Inner Dimension: As Per Requirement
• Outer body: Mild steel (powder coated)
• Insulation: Glass wool insulation is used in between the two walls,
• Temperature Range: As Per Requirement
• Temp. Control: PID controller.
• Temperature accuracy: 1C
• Power: 230 VAC/110 VAC

The Oven will be fitted with a digital vacuum gauge readable in millibar. The oven will be supplied with two perforated tray of stainless steel and a glass window provided on the door. Along with electrodes for material analysis i.e. conductivity, resistivity etc.Provision to connect vacuum pump is to be provided.