Electrical test sockets

GS 37 Flexible leads, plugs, sockets and other accessories GS 38 Electrical test equipment for use by electricians GS 39 Training of crane drivers and slingers... 

Testing Molten safe LAP (screen, wall, floor) steritest surface Molten safe LAP (electrical socket, screen, wall, floor, left side, right side) surface of steritest (two points) Each operating day or at least twice/week 1 CPU... 

The General requirements cover apparatus grouping and temperature classification, constructional requirements for enclosures and fasteners, connection facilities and terminal compartments, cable entries and supplementary requirements for rotating electrical machines, switchgear, plugs and sockets and luminaires. A third part of the standards cover type verifications and tests as well as marking requirements. 

Terminations or joints in the cable may be made in ceiling roses, junction boxes, or behind sockets or switches, provided that they are enclosed in a non-ignitable material, are properly insulated and are mechanically and electrically secure (lET Regulation 526). All joints must be accessible for inspection, testing and maintenance when the installation is completed (lET Regulation 526.3). 

The object of the test is to ensure that all ring circuit cables are continuous around the ring that is, that there are no breaks and no interconnections in the ring, and that all connections are electrically and mechanically sound. This test also verifies the polarity of each socket outlet. 

With probes of testing device inserted into sockets APPLY SUFFICIENT PRESSURE for good electrical contact CHECK A INDICATES AT ALL TIMES during testing. Replace battery if, in normal use, it does not illuminate. 

BMW performed a number of tests in the field of lithium-ion-battery-powered motors with a fleet of 500 Mini. Mini E (Figure 10.27) is equipped with a 150-kW electric motor, with a torque of 220 Nm (8.5 s from 0 to 100 km), powered by a 35-kWh latest-generation lithium-ion battery able to guarantee a range of nearly 200 km. A fiill recharge can be done in 2.5 h by connecting the vehicle to a suitable socket provided by BMW—the so-called Wall Box—which can be mounted where the car is usually parked. BMW claims... 

Contact Lands. The PWB is much like any other board. It has lands to accommodate electrical interconnect of the LGA socket to the board. The lands correspond in size and shape to socket requirements. Most often, the LGA lands on the PWB are electrolytic nickel covered by electrolytic gold. Hardened gold is often used for added contact durability and reliability. Other surface finishes can also be used, but should be tested for reliable and long-lasting contact. 

The source of a possible fault is again at the point of human contact with the electrical system and again the connections must be checked as described in the first two points above. Contacts that make and break a circuit are another source of wear and possible failure, so switches and motor contactors may fail after extensive use. Socket outlets that have been used extensively and loaded to capacity, in, say, kitchens, are another source of fault due to overheating or loose connections. Electronic equipment can be damaged by the standard tests described in the lET Regulations and must, therefore, be disconnected before testing begins. 

Faults occur in electrical components, equipment and accessories such as motors, starters, switch gear, control gear, distribution panels, switches, sockets and luminaires because these all have points at which electrical connections are made. It is unusual for an electrical component to become faulty when it is relatively new because it will have been manufactured and tested to comply with the appropriate British Standard. Through overuse or misuse components and equipment do become faulty but most faults are caused by poor installation techniques. 

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