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Bolt type aluminum electrolytic capacitor EW3

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  • Bolt type aluminum electrolytic capacitor EW3

Short Description:

105℃ 3000 hours suitable for UPS power supply and industrial control RoHS directive compliance


Product Detail

List of Products Number

Product Tags

Main technical parameters

Technical Parameter

 ♦ 105℃ 3000 Hours

♦ High Temperature

♦ RoHS Compliant

Specification

Items

Characteristics

Temperature Range(℃)

-40(-25)℃~+105℃

Voltage Range(V)

200 〜500V.DC

Capacitance Range(uF)

1000 〜33000uF ( 20℃ 120Hz )

Capacitance Tolerance

±20%

Leakage Current(mA)

≤1.5mA or 0.01 CV, 5 minutes test at 20℃

Maximum DF(20℃)

0.15(20℃, 120HZ)

Temperature Characteristics(120Hz)

200-450 C(-25℃)/C(+20℃)≥0.7 ； 500 C(-25℃)/C(+20℃)≥0.6

Insulating Resistance

The value measured by applying DC 500V insulation resistance tester between all terminals and snap ring with insulating sleeve = 100mΩ.

Insulating Voltage

Apply AC 2000V between all terminals and snap ring with insulating sleeve for 1 minute and no abnormality appears.

Endurance

Apply rated ripple current on capacitor with voltage not more than rated voltage under 105℃ environment and apply rated voltage for 3000hours, then recover to 20℃ environment and the test results should satisfy the requirements as below.

Capacitance change rate (△C )

≤initial value 土20%

DF (tgδ)

≤200% of initial specification value

Leakage current(LC)

≤initial specification value

Shelf Life

Capacitor kept in 105℃ environment for 500 hours, then tested in 20℃ environment and the test result should satisfy the requirements as below.

Capacitance change rate (△C )

≤initial value ±20%

DF (tgδ)

≤200% of initial specification value

Leakage current(LC)

≤initial specification value

(Voltage pretreatment should be done before test: apply rated voltage on both ends of capacitor through a resister of about 1000Ω for 1 Hrs, then discharge electricity through 1Ω/V resister after pretreatment. Place under normal temperature fbr 24hrs after total discharging, then starts test.)

Product Dimensional Drawing

Dimension (Unit:mm)

D(mm)

51

64

77

90

101

P(mm)

22

28.3

32

32

41

Screw

M5

M5

M5

M6

M8

Terminal Diameter(mm)

13

13

13

17

17

Torque(n.m)

2.2

2.2

2.2

3.5

7.5

Diameter(mm)

A(mm)

B(mm)

a(mm)

b(mm)

h(mm)

51

31.8

36.5

7

4.5

14

64

38.1

42.5

7

4.5

14

77

44.5

49.2

7

4.5

14

90

50.8

55.6

7

4.5

14

101

56.5

63.4

7

4.5

14

Ripple Current Correction Parameter

Frequency (Hz)

50Hz

120Hz

500Hz

1KHz

≥10KHz

Coefficient

0.8

1

1.2

1.25

1.4

Temperature Correction Coefficient Of Rated Ripple Current

Temperature(℃)

40 ℃

60℃

85℃

105℃

Coefficient

2.7

2.2

1.7

1

Screw Terminal Capacitors: Versatile Components for Electrical Systems

Screw terminal capacitors are essential components in electrical systems, providing capacitance and energy storage capabilities in a wide range of applications. In this article, we will explore the features, applications, and advantages of screw terminal capacitors.

Features

Screw terminal capacitors, as the name suggests, are capacitors equipped with screw terminals for easy and secure electrical connections. These capacitors typically have cylindrical or rectangular shapes, with one or more pairs of terminals for connection to the circuit. The terminals are usually made of metal, providing a reliable and durable connection.

One of the key features of screw terminal capacitors is their high capacitance values, which range from microfarads to farads. This makes them suitable for applications requiring large amounts of charge storage. Additionally, screw terminal capacitors are available in various voltage ratings to accommodate different voltage levels in electrical systems.

Applications

Screw terminal capacitors find applications in a wide range of industries and electrical systems. They are commonly used in power supply units, motor control circuits, frequency converters, UPS (Uninterruptible Power Supply) systems, and industrial automation equipment.

In power supply units, screw terminal capacitors are often employed for filtering and voltage regulation purposes, helping to smooth out voltage fluctuations and improve overall system stability. In motor control circuits, these capacitors assist in starting and running induction motors by providing the necessary phase shift and reactive power compensation.

Moreover, screw terminal capacitors play a crucial role in frequency converters and UPS systems, where they help to maintain stable voltage and current levels during power fluctuations or outages. In industrial automation equipment, these capacitors contribute to the efficient operation of control systems and machinery by providing energy storage and power factor correction.

Advantages

Screw terminal capacitors offer several advantages that make them preferred choices in many applications. Their screw terminals facilitate easy and secure connections, ensuring reliable performance even in demanding environments. Additionally, their high capacitance values and voltage ratings allow for efficient energy storage and power conditioning.

Furthermore, screw terminal capacitors are designed to withstand high temperatures, vibrations, and electrical stresses, making them suitable for use in harsh industrial environments. Their robust construction and long service life contribute to the overall reliability and durability of electrical systems.

Conclusion

In conclusion, screw terminal capacitors are versatile components that play vital roles in various electrical systems and applications. With their high capacitance values, voltage ratings, and robust construction, they provide efficient energy storage, voltage regulation, and power conditioning solutions. Whether in power supply units, motor control circuits, frequency converters, or industrial automation equipment, screw terminal capacitors offer reliable performance and contribute to the smooth operation of electrical systems.

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