TABLE V

APPARATUS		NO. WINDINGS	DC RESISTANCE	IMPEDANCE					INDUCTANCE (HENRYS) (SEE NOTE 2)
NAME	CODE NO.			AC Resistance (See Note 1)	Reactance (See Note 1)	Impedance	Freq.	Connections
Relays, AC Type	172-B	2	Inductive 540 Non-inductive 2000 Comb. 406	3260	5650	6520	900	Inductive winding only	1.0
Relays, AC Type	196-A	2	1600; 1600	117500	203000	235000	900	Windings in Series	36.0
Relays, AC Type	218-B	2	117; 117	450	678	810	135	Windings in Series, Armature held stationary	0.8
Relays, AC Type	J-1	1	1090	38000	39400	55000	900	-	7.0
Receivers	144	-	83	140	164	250	800	-	0.0325
Receivers	525	-	276	620	1910	2000	800	-	0.38
Receivers	528	-	56	106	237	260	800	-	0.0475
Receivers	557-B	-	30	46	110	120	800	-	0.022
Retardation Coils	5-U	2	(1-2) 500 (2-3) 500	-	-	-	16 16	Single Winding Series Aiding	3.0 to 4.0 12.0 to 15.0
Retardation Coils	5-AA 77-A	2	74 ea.	-	270	-	16	Two windings as connected for 1 wire	2.7
Retardation Coils	12-A	1	165	-	5024	-	800	-	1.0
Retardation Coils	44-D	2	83 ea.	2480	39565	39580	900	Windings in series	7.0
Retardation Coils	47-B	1	150	160	1700	1710	900	-	0.3
Retardation Coils	57-B	2	175 ea.	1620	22610	22700	900	Windings in Parallel	4.0
Retardation Coils	82-H	1 (tapped)	(1-8) 25.2	47	1640	1640	1800	Entire winding	0.145
Retardation Coils	182-B	1 (tapped)	(1-8) (30.0)	56	1640	1640	1800	Entire winding	0.145

Note: (1) Impedance and impedance components are discussed in Chapter XVI. A.C. Resistance or the resistance component of impedance is often widely different from the resistance to direct-current flow.
(2) Inductive values vary greatly depending upon conditions under which apparatus is operated, age of iron, degree of saturation, etc. This table gives only representative and approximate values.