. Electric railway journal . or the transformer and allow it toand to permit the making of repairs. pass out through the roof by means of monitor construc-Careful study of the ventilation problem should be made, tion or metal ventilators. The height of the exit openingsand good ventilation can be had with but very slight in- must provide for the circulation of air, although usually TABLE I—SYNCHRONOUS CONVERTE R SUBSTATIONS FOR SMALL UNITS * Table of Dimensions—600 Volts, D. C.—22000 Volts, 60 Cycle A. C. Size, Kw. A B C D E F G H L M 300 17 in. 13 in. 24 ft. 9 ft. 7 in. 11
. Electric railway journal . or the transformer and allow it toand to permit the making of repairs. pass out through the roof by means of monitor construc-Careful study of the ventilation problem should be made, tion or metal ventilators. The height of the exit openingsand good ventilation can be had with but very slight in- must provide for the circulation of air, although usually TABLE I—SYNCHRONOUS CONVERTE R SUBSTATIONS FOR SMALL UNITS * Table of Dimensions—600 Volts, D. C.—22000 Volts, 60 Cycle A. C. Size, Kw. A B C D E F G H L M 300 17 in. 13 in. 24 ft. 9 ft. 7 in. 11 in. 31ft. 25 ft. 19 ft. 18 IB. 500 18 in. ; in. 24 ft. 9 ft. 7 in. 12 in. 34 ft. 27 ft. 21ft. 20 in. 750 22 in. 17 in. 27 ft. 9 ft. - 9 in. 12 in. 40 ft. 27 ft. 21 ft. 20 in. 1000 25 in. 20 in. 33 ft. 12 ft. 9 in. 4fi ft. 28 ft. 22 ft. 21 in. * Letters refer to dimensions indicaterl in plan and INTERIOR OP CEDAR AVENUE SUBSTATION, CLEVELAND (OHIO)RAILWAY INTERIOR (IF liKLVIiDERE SUBSTATION, UNITED RAILWAYS &ELECTRIC COMPANY. BALTIMORE, MD. 834 Electric Eailway Journal Vol. 54, No. 18 the required head room will place these openings sufficientlyhigh to produce the circulation. Unlike the window methodof ventilation, this plan will operate during all kinds ofweather. Noise from the machines, especially where substationsare located in residence sections, is the next noisy substation may become a nuisance, rendering itpossible for neighbors to obtain injunctions causing shut-downs. The method of ventilation mentioned above is par-ticularly recommended from the noise standpoint. While the window area should not be excessive, the build-ing should be well lighted by day to facilitate repairs andinspection. The use of ribbed glass is very desirable, as iteliminates glare and thus facilitates the reading of instru-ments, gages, etc. Artifi
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