114
K78-42
__________________________________________
ENERGY STORAGE POLYPROPYLENE-METALLIZED FILM CAPACITORS
.
:
.
Designed to operate in DC and ripple
current and in pulse mode.
Capacitors are built in cylindrical and
rectangular metal cases with bushing
insulators
.
"a"
Design "a"
"b"
Design "b"
L
H
B
A
M16
55+2.
3
D
H
M12
A
55+2.
3
220...10000
Capacitance range C
r
220...10000 F
630...2500
Nominal voltage U
r
630...2500
kV
10%; 20%
Tolerance on C
r
10%; 20%
f = 50
<0,0025
Loss factor tg at f=50Hz
<0.0025
> 1000
.
Time constant
C
1000
. F
-60...+70
o
C
Operating
temperature
-60...+70
o
C
50000
Lifetime
expectancy
50.000hours
10
Storage
time
10
years
:
78-42 1000 - 910
- 10%
Part number to order:
Capacitor K78-42 1000 V 910 F - 10%
116
K
Minimum operating time as a function of coefficient K
4.7 (5.0)
1
1.4
2
1.6
1.2
1.8
0.9
4 (4.3)
2 (2.3)
1 (1.3)
3 (3.3)
5 (5.3)
0 (0.3)
K
lg (lg N)
:
-
;
-
.
K=U/Ur
Minimum operating time given:
- in brackets in pulses ;
- without brackets in hours.
Where K=U/Ur
U
2
m
CF tg
g
+2( U
m
FC)
2
R
A
< 20 / R
T
,
R
T
, tg
g
, R
A
-
,
:
Permissible amplitude of AC sinusoidal component of voltage at amb is expressed by
U
2
m
CF tg
g
+2( U
m
FC)
2
R
A
< 20 / R
T
,
where
R
T
, tg
g
, R
A
-
are parameters given in the table:
117
Ur, V
Cr, F
RA*10
3
, Ohm
RT,
o
C/W
tg g*10
4
"a"/ Design "a"
2000 1.43 2.65
3000 1.30 1.91
3900 1.29 1.80
5600 1.27 1.61
630/1000
10000 1.38 1.15
910 1.47 2.65
1300 1.32 1.91
1600 1.31 1.80
2400 1.29 1.61
1000/1500
3900 1.38 1.15
300 1.89 2.65
560 1.52 1.91
750 1.46 1.80
1200 1.39 1.61
1500/2200
1800 1.45 1.15
220 1.57 2.65
300 1.39 1.91
430 1.36 1.80
680 1.32 1.61
2500/3500
1100 1.41 1.15
3
"b"/ Design "b"
6800 0.12 0.68
8200 0.12 0.59
1000/1500
10000 0.13 0.56
2700 0.27 0.66
3900 0.19 0.43
1500/2200
5100 0.21 0.35
2000 0.14 0.56
3000 0.11 0.43
2500/3500
5100 0.12 0.23
3
:
Permissible parameters of pulse mode must not exceed the values calculated from the following
formulas:
T
A
r
r
R
R
F
C
U
F
F
C
U
/
20
/
2
.
1
8
.
1
lg
10
4
.
2
2
2
2
4
,
,
1
.
1
0
I
F
C
U
r
U -
,
;
F -
,
;
, .
I
0
= 100
"a";
I
0
= 150
"b";
where
U - amplitude of peak-to-peak pulse voltage, V;
F - pulse repetition rate;
discharge current pulse duration, s;
I
0
= 100 for design "a";
I
0
= 150 for design "b";
PDF 
ZIP