396 ELECTRICAL MEASUREMENTS 



very large resistance; usually the former method is the more 

 convenient. 



In general, by equation (26) 



FT r7 rz rj 



AM&P AN^X- 



For this particular case, 



Zi M = RM 



1 



ZX ~- = j^jbx 

 Z P = T P ^-' 



Substituting these relations, 



The horizontal component gives 



R N 



R~ M =r * 



The vertical component gives 



Therefore, the two components of the admittance of the condenser 

 are 



and 



b x = - 



The power-factor angle 6 X is given by 



tan i x = ^ = - 

 9* 



The conductance g x is the reciprocal of the equivalent insula- 

 tion resistance of the condenser or cable. This resistance bears 



