Electric street lighting and the rise of constant-current transformers explained
This book summarizes research on powering series arc lamps from alternating current systems, with a focus on constant-current transformers. It covers practical design choices, laboratory tests, and real-world results from Hartford, including how transformers and multi-circuit connections behave under varying loads and voltages. The material blends theory with measurements on efficiency, temperature rise, and the trade-offs of keeping lamp voltage stable as load changes.
- How the constant-current transformer regulates current across different loads and how it can feed multiple circuits.
- The role of oil-immersed transformers and their cooling, safety, and reliability in street lighting.
- Real-world performance data: efficiency, power factor, temperature rise, and lamp voltage behavior.
- Practical guidance on when the constant-current approach is advantageous for city lighting projects.
Ideal for readers interested in the early development of electrical distribution, street lighting technology, and the practicalities of converting AC power into stable arc-lamp operation.