Aluminum electrolytic capacitor
K50-74

TU 6270-003-07628635-99

Capacitors are suitable for application in direct current and ripple current circuits. Capacitors are produced in all climate version and temperate/cold climate version. Isolated.




Main parameters
NameValue
Rated voltage, V 350…400
Rated capacitance, µF 100…220
Capacitance tolerance (25 °C, 50 Hz), % +50…-10; ±20
Temporary overvoltage within 10 sec., V 1.1 UR
Maximum operating temperature Tenv, °C +85
Minimal operating temperature Tenv, °C -40



1 - Isolation sleeve
2 - Explosion-proof valve



Capacitors reliability
Reliability
Operation modes
Minimal nonfailure operating time, tλ, hours Capacitor failure rate, λ, 1/hour, max
Maximum-permissible mode (UR, Tenv=85 °С) 2 000 10-8
Light mode (UR, Tenv=70 °С) 5 000
Storageability
Gamma-rated time of capacitor storageability Tcy at y=99.5%, years, min
15



Capacitor electric parameters value when delivered
CR, µF UR, V tg δ, %, 25 °C, 50 Hz, max ILEAK, µA, 25 °C, after 5 min., max Z, ohm, 25 °C, 100kHz, max IR, A, 85 °C, 50 Hz, max
100 350 10 700 0.8 0.4
385 770 0.45
400 800
150 385 1 155 0.5 0.6
400 1 200
350 1 050 0.4 0.7
220 385 1 694 0.8
400 1 760



Ripple current effective value
versus temperature and frequency can be found from the formula IRO = IR x KT x KF, where

IR- allowable ripple current at 85 °C, 50 Hz (See Table "Capacitor electric parameters")

KT - IR correction factor versus temperature
Tenv, °C 40 45 50 55 60 65 70 75 80 85 90 95 100 105
KT 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6



KF - IR correction factor versus frequency
F, Hz 50 100 300 1 000 ≥10 000
KF 1.0 1.25 1.3 1.5 1.75



Capacitors overall dimensions and mass
UR, V 350 385 400
CR, µF DxH, mm
mass, g
100 21x45
30
25x45
40
25x45
40
150 30x45
50
30x45
50
220 30x45
55
30x50
60
30x50
60



Example of reference designation for ordering:

CAPACITOR K50-74 - 385V - 220µF ±20% B TU 6270-003-07628635-99