RATING Of ELECTRICAL MACHINERY 41 



RA TING 



BBLC.I 



i /niermiitr- In which the periods of work and ret alter- 



nale in minutes. 



In *hi Aork of sufidently short 



nary trm|x-r.r reached are folio* 



periods of rest long enough f- ill to pj 



h i he prno*U of work are roffi. 

 id to the esu 

 perat 



FIANCE. 



: tuoMJ temte. 



1 nlfr mtl'.rn! jfrvii > 



(1) 'life. In which the periods of work and rest altet- 



. tramways, and similar ap- 

 paratus.) 



VAor/ period service. In which the periods of work are not sunV 



.: for the final (rated) temperature to be reached, whi 

 - of rest are long enough for the temperature to fall to approxt- 

 mat f the surrounding air. 



In which the periods of work are suffi< 

 r the final temperature (rated) to DC attained. 



GBEAT B*n MS 



nttous working. The -rs and motors for 



king shall be the output at wi. can work con- 



tinuously for six hours and conform to the prescribed tests, and th- 



1 as the Rated Load. 



Iniermtitent working. The output of motors for intermittent 

 output at which they can work for one hour and 

 prescribed tests, and this output shall be defined as the 

 Rated Intern; id. 



SWEDEN. 



In which ti. iture reaches stationary 



In which the working periods do not exceed 

 one hour or alternate with intervals of rest of a similar length. 



KS. 



1 < > ttnuous ru/iMf. In wrmh. under load, there is the attainment 



nary tern per at 



Intermittent rating. In which one minute periods of load and rest 

 ite until the attainment of approximately stationary conditions 



(3) Minute rating. In which, under load for one minute, no limit of 

 capacity is exceeded, and no permanent change is wrought in the apparatus 

 Variable service, rating. Not yet defined. 



Noras. PBAMCB. The A* 



BRITAIN. The reajon for thr " vi hour* " in the 



workmt " i due to the fact that the CoJnmtttec 

 >cv, 2 i ' ** il atbai ipactei 



ftandardiutton b*inf to aaaUt the manularturr' 



d >r* pot include nMrhiaa* ninmnc from Mfc.ead u 



H M mf : - - 



itpot radar cxmtia^oaa atrrice is deftaed aa that ot 



do *o abor* I 



on brim to MriM the maoof* voold rarte t r par to 



.000 kw. 



SAT 1 



rated ovtpat 



ined continoootlr for aa hour without the tavavmttnv 



