We have been known and acknowledged as a reliable and dependable testing machine manufacturer that brings out a huge range of several testing equipment like Electric Conduit Testing Equipment. The main objective of conduits are that these are used in electrical installations shall possess adequate for mechanical strength. These are also suitable for ascertaining the mechanical strength of conduits on various parameters and compressive loads. Our range include several general and safety requirements for household and similar electrical appliances with these conduits. These equipments are in confirmation to various specification like:
IS 6946 – 1973, IS 9537, IS 366 – 1991, IS 3854 – 1997, IS 6290 – 1986 and many more.
The ability of cable ducting and trunking systems for electrical installations to withstand impacts likely to be encountered during their working life is determined by dropping a guided weight from a pre-determined height over a cylindrical striker placed on the surface of the cable ducting and observing for signs of its failure under this impact.
The Globe Impact Tester for cable ducting and trunking systems consists of a guided cylindrical striker with its axis held along a vertical plane and a dropping weight which can be released from different pre-set heights to strike the top face of the striker. The striker, which rests on the surface of the cable ducting under test, is loosely guided by the lower end of a guide rod. The guide rod is firmly held inside a supporting block, which can be moved over two vertical rods for changing the dropping height.
Clause 10.3 : Impact Test
Test for resistance to oil for fittings for rigid non-metallic conduits is carried out by immersing the test specimen in insulation oil maintained at a temperature of 60 ± 1°C for a period of 48 hours. After this period, the fitting is taken out and kept at room temperature for 15 minutes. The fitting is than examined for the affect of oil.
The GLOBE Oil Bath for testing resistance to oil for fittings for rigid non-metallic conduits has double walled construction, with inner walls made of mild steel sheet and outer walls of CRCA sheet. The space between the two walls is filled with thermally insulating mineral wool. The top of the bath is made of stainless steel sheet and it is also provided with a stainless steel sheet lid. The oil in the bath is heated with the help of an electric heater and its temperature indicated and controlled by a digital temperature indicator-cum-controller. A motor-operated stirrer keeps the temperature uniform inside the bath. The equipment is complete with switch, fuse, indicators etc.
Collapse Tester For Rigid Non - Metallic Conduit
Non-metallic conduits used in electric wiring shall be sufficiently sturdy so as not to collapse when bent during laying. The ability of these conduits to bend without causing excessive deformation in their cross section or reduction in their cross-sectional area is determined by bending a portion of the conduit through an angle of 90°, maintaining it under bent condition for a period 24 hours inside a hot air oven maintained at a temperature of 60 ± 2°C, and subsequently passing a barrel shaped go-gauge through it. The gauge shall pass through the bent conduit under its own weight without any restriction.
This test is applicable to conduits of 16, 20, and 25 mm nominal sizes only.
The GLOBECollapse Tester for electrical conduits consists of a jig for firmly holding a test specimen taken from the conduit under test in a bent state and a stand to mount the jig in a vertical plane such that a barrel shaped gauge can be passed through the conduit under its own weight under the effect of gravity.
IS 9537 (Part 1) - 1980 : Specification for Conduits for Electrical Installations
Part 1: General Requirements
IS 9537 (Part 3) - 1983 : Specification for Conduits for Electrical Installations
Part 3 : Rigid Plain Conduits of Insulating Materials
IS 9537 (Part 4) - 1983 : Specification for Conduits for Electrical Installations
Part 4: Pliable Self-recovering Conduits of Insulating Materials
Conduits used in electrical installations shall possess adequate mechanical strength. One of the tests used for ascertaining the mechanical strength of conduits is the compression test. In this test, a test specimen taken from the sample of conduit under test is placed on a rigid flat surface and pressed from top with the help of a metallic cube. A specified load is applied on the conduit under test through the metallic cube and the reduction in diameter of the conduit determined. The load is then released and the recovery in the diameter is determined. The value of percentage deflection under load and percentage recovery after release of load are calculated and compared against specified values to evaluate the performance of the conduit under the action of compressive loads.
The GlobeCompression Tester For Rigid Non-Metallic electrical conduits consists of a rigid platform for placing the test specimen on, an arrangement for compressing the conduit manually with the help of a hand-wheel and a screw arrangement, and a compression spring to apply the load on the conduit under test.
Technical data :
External parts of insulating materials, deterioration of which might cause the electrical appliance or plastic conduit to become unsafe, shall be sufficiently resistant to deformation at elevated temperatures. Compliance is checked by subjecting plastic parts or conduits made of insulating materials to a ball pressure test.
The GlobeBall Pressure Apparatus consists of a hardened and ground carbon steel ball held in a suitable adopted. The adopter carries a stirrup arrangement to apply the specified load on the test specimen placed on a flat surface.
A metallic stand having a flat horizontal platform for placing the test specimen on is also supplied with the equipment.
Conduits used in electrical installations shall possess adequate mechanical strength. One of the tests used for ascertaining the mechanical strength of conduits is the bending test.
The GlobeBending Device For Rigid Non-Metallic Conduits consists of a base plate fitted with a pin on which interchangeable formers of specified sizes can be kept. A screw-operated clamp holds the test specimen in position against the former.
Two manually operated levers having their pivot points at the centre of the former holding pin are provided for bending the conduit. The bending rollers are in form of metallic cylinders of the required shape and size and mounted on ball bearings to give a smooth movement. The central axis of the bending rollers is adjusted for conduits of different diameters by holding them at different locations on the levers.
Conduits used in electrical installations shall possess adequate mechanical strength. One of the tests used for ascertaining the mechanical strength of conduits is the compression test. In this Compression tester, a test specimen taken from the sample of conduit under test is placed on a rigid flat surface and pressed from top with the help of a metallic cube. A specified load is applied on the conduit under test through the metallic cube and the reduction in diameter of the conduit determined. The load is then released and the recovery in the diameter is determined. The value of percentage deflection under load and percentage recovery after release of load are calculated and compared against specified values to evaluate the performance of the conduit under the action of compressive loads.
The flexible conduits are generally used for covering loose cables joining a fixed supply point to a fixed equipment or machinery. These may be made either from metallic or non-metallic materials. In either of the cases these conduits should be sufficiently flexible, so as to be able to bend to the specified radius without breaking. The ability of non-metallic flexible conduit to bend upto the desired degree is checked by bending it through four cycles of reverse bending through ninety degree over cylindrical mandrels having the specified radii. After that, the whole assembly is rotated by 45º and the specified gauge should be able to pass through the conduit under its own weight.
The GLOBE Bending Device for Flexible Non-Metallic Corrugated Conduits consists of an arrangement to fix two mandrels of specified radii fixed in a manner that there is a gap equal to the diameter of the conduit between them. A bush is provided to clamp the conduit under test. The arrangement is provided to ensure 90º bending around both the mandrel and to hold the conduit bent at 90º around one of the mandrel at the end of the bending operation. The whole assembly can be rotated by 45º manually, to facilitate passing of the appropriate gauge. (The gauge is not supplied with the equipment).
IS 9537 (Part 4)- 1973 : Specification for Conduits for Electrical Installations (Part 4) Pliable Self recovering conduits of Insulating Materials
Heat Resistance Tester For Pliable Electrical Conduits Of Insulating Materials
The ability of pliable electrical conduits made of insulating materials to withstand deformation at elevated temperatures is determined by keeping a 100 mm long piece of conduit under a specified load at a temperature of 60ºC for a period of 24 hours and determining the reduction in its cross sectional width because of the loading.
The GLOBE Heat Resistance Tester for pliable electrical conduits made of insulating materials consists of a metallic frame having a flat platform for placing a 100 mm long piece of conduit on, a horizontal metallic pin of 6 mm diameter held at the lower end of a vertical rod for applying the specified load on the conduit under test, and dead weights for applying the specified load on the conduit under test.
The loading rod is guided inside a vertical brass sleeve so that it can move only along a vertical axis. The weight of the loading assembly is 0.5 kg to enable testing of very light conduits. Additional weights of 0.5 kg and 1.0 kg are provided for testing light and medium conduits. These weights can be placed on a collar attached to the upper end of the loading rod.
IS 9537 (Part 4) - 1983 : Specification for Conduits for Electrical Installations
Part 4 : Pliable Self Recovering Conduits of Insulating Materials