Document 0JkG9nzrz0ey5j03RMZy3OkXk

MORE HEAT-FASTER Accumulated condensate and trapped air can make unit heat* era slow in starting. Uncertain drainage will seriously reduce heat output. LEAKY TRAPS WASTE ft/FL While all Strong Inverted Bucket Traps will handle large amounts of air, the hookups shown here provide thermal air vents for practically instantaneous heating. Use of Strong traps, guaranteed for a year against leakage, insures positive drain* age without waste of steam. lH*l IfO-T trap wtll (hwiMi elrvefit 4 arwHI-CAV Orlftt*. Aveilehte In tlim free* m*. *re- fred* Completeness of the Strong line enables us to recommend exactly the right type and sire of trap you need--open or inverted bucket, closed float, float-ond-thermostatic (blast), etc.--semistecl, cast, forged and welded construction. Send your drainage problems to us for the right solution. STRONG, CARLISLE & HAMMOND COMPANY 139? Watt 3rd Itract Anv* Min Cleveland 13, Ohio 1)4 (SSa] Generator Exciters (Continued from page 73) voltage back to normal. w. At very low voltages, current in ei. pqcitance and reactance circuits diffcJ appreciably. This means that II coa-J ductori A end B of the turbine.* generator are short circuited the poteaJ tial transformer voltage is extreatlyi low. .. The'regulaling equipment itg], provides an additional voltage to came1 the mtotrol pilot to boost the excltatioij on the main exciter In an attempt ujj bring the ac terminal voltage back toil normal. -3 Higher Voltage*. Direct-connected) turbo*exeltera in capacities up to 300 k * at 250 v can be built readily. Above these ratings, a higher voltage is pref erable to aimplify current collection1 and to reduce the size of collector rings,, thus simplifying operation and redocinij maintenance. Tho largest 3600-rpta turbine generator contemplated now i^ 150,000 kw, 'which requires aboot' 40D*kw excitation. Adoption of 375 rat a new standard excitation voltage introduces n,o prob lems for either exclter'or ac generator as it la in tNe tame Insulation class ti the present lower voltsges. The excita tion voltage for machines,-12,500 kw and smaller, it 125 v; for larger mschines 250 v is standard. Technical Briefs (Continued from page 130) Tha 101,000.Hp Tarilse* at Sheets Oom, by J F Roberts, AUit-Chalmeri' Mfg Co. Gives the engineering feature*' of these units, which are rated 103/100' hp at 330-ft net head and 50.000 bp under 238-it minimum head. Best efficiency, 93.2%, Is between 380* and 400-ft net bead. They operate under an extreme head variation from 238 minimum to 475 ft maximum; that la.? from 72 to 144% rated head. At maxi mum head the turbines are estimated, to be good for 187,000 bp each. Spiral casings for these turbines sre welded plate steel made jn seven seoUqns yrilh. riveted field joints held.by double butt straps. Plates are 1% la. thick in the inlet section, which is 12 ft, 8 In. Inside diameter. These are among the first and the largest welded plate-steel scroll cases built In thl*. country. After assembling and rivetlflf in the field, eaeb casing was pressure POWER Jeeuerv (94* SURFACE 'CONDENSER TUBE ^PACKINGS IK4TAUATIOM WITH PIBRUUS "ANKORITE" Metallic and Fiber Ring'Combination holds condenser lubes free from leakage, with or . without ferrules. Not effected by fresh or sail water or sewerage contamination. Metal rings bond the tubas to tube sheet and aid In preventing electrolytic tube destruction. miTAVlATIOM WITHOUT mtUUS COMPLETE INSTALLATION INSTRUCTIONS UPON REQUEST THE ANCHOR PACKING COMPANY GENERAL OFFICES: PHILADELPHIA, PA. PACTORtlSi MANMIIM, PA., IlKHAtV. IMD., MONTRCAL, CAN. BRANCH OFFICIS .. .BalHmefa 3, Maryland ,lMttn 14, Meuochusatt* ......... Swftala 3, Nra York ........... ClralMd II, OMe t,............. CtUcacs S. lUtnofa ..............CkKtiMatt CMa ......... Oatvett IS, Michigan Htnln X. Twos Im Angela SI, CalHwala Maltreat 3D, Cia< 41S (MnM Street............ 100 Ilk Arena#..................... 401 Mertti (iw4 Itiwt. . .. ,409 Penn Avenue................ Terminal SeW Bttildln*. .. 114 Saitti Pork.................... 3309 1st Anns* (lb.... 1407 Pin* Stmt.................... 931 Sewth Ikkiwnt Street. S34 Ami ... .New Orleans 4, tewtslana ......... New Ter* IS, New Y*k . Pfcltndefrtila I, Penaytvante . PHtibtfrak 33, PcnaytvunM ...................Pertland 1, Orepea .. San PraneW# 7, CaOfenUo ..............Seattle 4, WafctQtea ................ St. Ub S, Mtmurt ....................... Telia, OBleAe-- .......... WUnttagtoo, CaflSmte