Substations Crossword

2. Electrical conductor such as a wire in the shape of a spiral, helix or ....?
6. Designed to protect an electrical circuit from damage caused by excess current.
8. Part of an electrical generation, transmission, and distribution system.
9. A safety device for oil pressure on a transformer.
11. An instrument used for measuring specific gravity of the electrolyte in a battery.
13. A safety relay mounted on top of some oil filled transformers.
15. Track sectioning cabin.
16. Typical failure mechanism for electrical power insulators.
19. A brand of tester used for winding resistance.
21. fault locator used on the Queensland Rail network.

1. A test for vacuum bottle integrity.
2. Movement of electrons along a conductor.
3. Electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
4. A strip of metal used to conduct electricity.
5. An electrical coil switch that uses a small current to control a much larger current.
7. An electrical device that will allow current to pass through itself in one direction only.
10. A solid - state display device that emits infrared light when a forward - biased current flows through it.
12. To remove electrical energy from a charged body such as a capacitor or battery.
13. An insulated device that allows an electrical conductor to pass safely through a grounded conducting barrier.
14. A test for insulation moisture assessment.
17. A mechanical seal between two or more surfaces.
18. A unit of measure for the flow of current in a circuit.
19. A device which converts electric energy into mechanical energy.
20. One or two points of a magnet at which its magnetic attraction is concentrated.