FREQUENCY CONVERTER
primary current:

r _ 6°J^___•?"

-/ 0 — A~T-^—.—r

189

primary impressed o.m.f.:

£3 SECONDARY g TERMINAL ° VOLTAGE

I
M PRIMARY AMP*

/

/
/

2500 2400

a: — -a
X
X

_12L
11

2300

/
X

10

X
/

9

/
x

8L

x
X

7

^^
/

6-

^
^^

REGULATION CURVES PRIMARY, 6350 VOLTS CONSTANT

5

25 CYCLES THREE-PHASE SECONDARY, 62.5 CYCLES QUARTER-PHASE

4

0

0
2
SECONDARY CURRENT PER PHASE, AMP.
0 30 40 50
6
0

Fia. 63. — Regulation curves of frequency converter.
secondary output:

p _ FT? r ii - e° flii
-t i — L-^i/iJ — — -7~- - ,

+

,

T"

primary electrical input:

primary apparent input, volt-amperes:
Pan =