Electrical installations of electric light, power, traction and industrial electrical machinery (1902)
Kennedy, Rankin, d. 1917 · Edinburgh T.C. & E.C. Jack · leaf 223
oss the mercury cups Fi andF2, and S is a spring acting againstthe armature of the relay. When thearmature of the relay pulls up, thehi:h resistance T is cut out. The action is as follows : Whenthe circuit is broken by the leverwith only two or three lamps on, thehigh resistance is kept in series,… … Fic;. 229 AlternatincT Motor Meters From the above the complete action may be gathered. Tostart with, the lever is up ; a coin is inserted, bringing the lever downand establishing connection between the mercury cups, and itremains in this position until the anode B is lightened sufficientlyto allow…
Electrical engineering · Electric power
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