Short Circuit Test

1. Energise busbar
2. Stand well back
3. Cover eyes and face
4. Drop short circuit device onto busbar
5. Call ambulance/fire brigade as appropriate.

But, why do you want to? Bus bar short circuit with stand test is normally a type test and it is done generally at recognised test houses like CPRI (in India), They only will have the infrastructure for conducting the test. Individual manufacturers or users will not have the necessary infrastructure.

GEC had a fantastic film of busbars under SC conditions. I'd love to see it done but from a very safe distance.

I've seen the aftermath of busbars failing due to overload. Extra loading was placed on an old slate panel, unfortunately the busbar insulators had been left at the original spacing. So it soon went from OL to SC.

Procedure :-

1. Connect busbar system under test to test laboratory connections, having bolted a short circuit across the required test point. This link will usually be at least as large as the bars under test.

2. Laboratory staff will usually set up required current/voltage conditions in advance.

3. Close making switch onto test system

4. After required time (e.g. 1 second), open breaking switch (making and breaking switches are often separate for various reasons including timing accuracy). This is usually an automated sequence for obvious reasons. Record all measured values/oscillograms.

5. Let the system cool down, and carry out detailed inspections and flash tests to establish pass/fail.

6. Repeat as required, e.g. moving shorting link to other test points.