K50-77

Aluminum electrolytic capacitor

elecond-market@elcudm.ru

+7 (34147) 2-99-89

AZHYAR.673541.007 TU

Capacitor is used for operation in direct current and ripple current circuits, secondary power sources and converter equipment. Capacitor is available in all-climate (isolated and non-isolated) and temperate / cold climate version (isolated).
It is recommended to use this capacitor type as substitution for capacitors K50-37, K50-18 types.

Find out about delivery times, product costs or just ask a question

Main parameters

Name	Value
Rated voltage, V	250…450
Rated capacitance, µF	1 000…4 700
Temporary overvoltage within 10 sec., V	1.15 UR (UR = 250) 1.1 UR (UR > 250)
Capacitance tolerance (25 °C, 50 Hz), %	+50…-10; ±20
Maximum operating temperature Tenv, °C	+85
Minimal operating temperature Tenv, °C	-40

Capasitor physical configuration

Variant A

Temperate/cold climate
version (Isolated)

All climate version
(Nonisolated)

All climate version
(Isolated)

Variant B

Temperate/cold climate
version (Isolated)

1 – Isolation sleeve
2 – Explosion-proof valve
3 – Connecting strip for discharge
4 – Lacquer coating
5 – Screw BM5-6g
6 – Washer 5.65

Overall and fitting dimensions of a capacitor clamp

Capacitor ratings

UR, V	250	400	450
CR, µF
1 000		✓
1 500		✓	✓
2 200		✓
3 300		✓
4 700	✓

Capacitors overall dimensions and mass

UR, V	CR, µF	D, mm	H, mm	A±0.15, mm	Mass, g, max
250	4 700	65	140	28.5	800
400	1 000	65	70	28.5	380
400	1 500	65	105	28.5	600
400	2 200	65	105	28.5	600
400	3 300	65	105	28.5	600
450	1 500	65	105	28.5	600

Capacitors reliability

Reliability Operation modes	Minimal nonfailure operating time, t_λ, hours	Capacitor failure rate, λ, 1/hour, max
Maximum-permissible mode (UR, T=85 °С)	12 000	5x10^-5
Light mode (0.5UR, Tenv=50 °С)	150 000	3x10^-7
Storageability Gamma-rated time of capacitor storageability Tcy at y=95%, years, min	20

Capacitor electric parameters

UR, V	CR, µF	tg δ, %, 25°C, 50 Hz, max	ILEAK, µA, 25°C, after 5 min., max	ESR, Ohm, 25°C, 100Hz, max	Z, Ohm, 25°C, 10kHz, max	IR, А, 85°C, 50 Hz, max
250	4 700	10	5 203	0.04	0.11	8.8
400	1 000	10	2 466	0.11	0.16	3.7
400	1 500	10	3 021	0.09	0.11	4.8
400	2 200	10	3 658	0.05	0.07	6.65
400	3 300	10	5 514	0.04	0.045	8.8
450	1 500	10	3 204	0.07	0.15	6

Ripple current effective value depending on temperature and frequency can be found from the formula:
I = IR × KT × KF,
where IR – allowable ripple current at the temperature 85°C and frequency 50 Hz (See Table “Capacitor electric parameters”)