electrical testing services dubai

                                                                          Electrical testing services Lab

Electrical safety testing essential to ensure safe operating standards for any product that uses electricity. Various governments and Electrical Testing Services government agencies have developed stringent requirements for electrical products that are sold world-wide. In most markets it is mandatory for a product to conform to safety standards and  promulgated by safety and standard agencies.

To conform to such standards, the product must pass safety tests such as the high voltage test. Insulation Resistance Test, Ground (Earth) Bond & Ground Continuity Test & Leakage Current Test

Many safety testing standards in the world have been based on it. To safeguard workplace health and safety, many sections of the Occupational Health and Safety Regulation provide guidelines on electrical safety and the appropriate equipment required to work on low and high voltage electrical appliances.

Health and safety regulations require that electrical appliances are safe and maintained to prevent harm to workers. Many equipment manufacturers recommend testing at regular intervals to ensure continual safety; the interval between tests depending on both the type of appliance and the environment in which it is to be used. The responsibility for this lies with the manufacturer or the importer and is policed by Trading Standards. The inspection of the appliances can largely be carried out in-house in many organizations. This can result in cost savings and more flexibility as to exactly when a Electrical Test is carried out.

This test is carried out by applying a significantly higher than operating voltage to the device under test. In this test, the insulation of a product, stressed to a greater extent than under normal operating conditions, should not be breached for the product to pass. In most cases, the device is stressed to twice its normal operating voltage. During type testing, i.e. testing during designing a product or for a double insulated product, however, much larger voltage may be applied. For all electrical products, the high voltage test is a universal test, meaning that every unit should pass before it can be used. 

The equipment shall have a measured resistance of the protective earth circuit, or the earthing conductor of an extension cord or appliance cord set, which does not exceed 1Ω. The choice of which of the tests to use is at the operator's discretion as there is merit in each test for given situations. Later model testers that are battery powered are limited to doing the "screen test". Older mains powered units can do all tests. Even "type testing" may only be testing at a fraction of the operational power of the unit. 

 

This test shows the resistance offered by the earthing rods with the connection leads. Various testing instruments are available for earthing resistance tests. The earthing resistance should be less than 1Ω.

This test is to measure the total resistance of a product’s insulation by applying a voltage of 500V – 1000V. The minimum acceptable value of resistance for a product to pass an insulation resistance test is 1 mega Ohm (1000 kohms). The insulation resistance test is not a substitute for the high voltage test. Many standards and safety agencies have specified this is a universal test for all products. This test may also be carried out after every maintenance procedure or repair.

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