Memcap Capacitor Elements

The Memcap range of capacitors are produced using well proven metallised film technology. This utilises the process of depositing, by vacuum evaporation, a thin layer of metal on one side of a polypropylene film.
A capacitor element is obtained by winding two polypropylene films together. The plates of the capacitor are formed by the metal layer and the film itself becomes dielectric.



 Memcap 10 Single Phase 230 - 550V
 Memcap 20 Three Phase 230 - 450V
 Memcap 25 Three Phase 230 - 690V
 Specifications
 Contact Details


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Memcap 10 Single Phase
- to IEC 831 - 1/2, EN 60831 - 1/2, VDE 0560

These are dry modular units which can form the basis of any power factor correction system. With a range of voltages from 230 up to 550V they can be used in both standard and special applications.
The large range of sizes make these the most versatile of all our capacitor product ranges.
 

UN
( V )

QN
( kvar )

IN
( A )

CN
( µF )

D
( mm )

H
( mm )

Box
Qty.

230

0.83
1.67

3.6
7.2

50.2
100

45
60

122
132

48
24

400

1.67
2.50
3.33
4.17

4.2
6.3
8.3
10.4

33.2
50.0
66.3
83.0

50
55
60
60

122
132
132
132

36
28
24
24

415

1.67
2.50
3.33
4.17

4.0
6.0
8.0
10

30.9
46.2
61.6
77.0

50
55
60
60

122
132
132
132

36
28
24
24

450

1.67
2.50
3.33
4.17

3.7
5.5
7.4
9.2

26.3
39.3
52.4
65.5

50
55
60
60

132
132
132
132

36
28
24
24

500

1.67
2.50
3.33

3.3
5.0
6.6

21.3
31.8
42.4

50
55
60

132
132
132

36
28
24

525

1.67
2.50
3.33

3.2
4.8
6.3

19.2
28.9
38.5

45
55
60

132
132
132

48
28
24

550

1.67
2.50
3.33
4.17

3.0
4.5
6.1
7.6

17.6
26.3
35.1
43.9

45
50
60
60

132
132
132
132

48
36
24
24

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Memcap 20 Three Phase
- to IEC 831 - 1/2, EN 60831 - 1/2, VDE 0560

A range of three phase elements that can be used for individual correction of the smaller items of plant. The units are again dry and come complete with internally connected discharge resistors. With the added benefit of a terminal cover these units can be used internally in control panels or alternatively they can be installed alongside the item of plant they are correcting.

UN
( V )

QN
( kvar )

IN
( A )

CN
( µF )

D
( mm )

H
( mm )

Box
Qty.

230

0.8
1.5

2
3.8

3 x 16
3 x 30

55
55

165
165

21
21

400

0.5
0.8
1
1.5
2
2.5
3
4
5

0.72
1.1
1.4
2.2
2.9
3.6
4.3
5.8
7.2

3 x 3.3
3 x 5.5
3 x 6.6
3 x 9.9
3 x 13.2
3 x 16.6
3 x 19.9
3 x 26.5
3 x 33.2

55
55
55
55
55
55
65
65
65

165
165
165
165
165
165
200
200
200

21
21
21
21
21
21
14
14
14

415

1
1.5
2
2.5
3
4
5

1.4
2.1
2.8
3.5
4.2
5.5
6.9

3 x 6.2
3 x 9.2
3 x 12.3
3 x 15.4
3 x 18.5
3 x 24.6
3 x 30.8

55
55
55
55
65
65
65

165
165
165
165
200
200
200

21
21
21
21
14
14
14

450

1
1.5
2
2.5
3
4
5

1.3
1.9
2.6
3.2
3.8
5.1
6.4

3 x 5.2
3 x 7.9
3 x 10.5
3 x 13.1
3 x 15.7
3 x 21
3 x 26.2

55
55
55
55
55
65
65

165
165
165
165
165
200
200

21
21
21
21
21
14
14

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Memcap 25 Three Phase
- to IEC 831 - 1/2, EN 60831 - 1/2

Designed for the discerning panel builder where the number of interconnections are to be reduced. A cost effective labour saving device for all panel builders.
The units come in a range of sizes and voltages to suit all applications. Dependent upon need, the unit can be either 'dry' or vegetable oil impregnated. The units come complete with internally connected discharge resistors.

Polyurethane Resin Impregnated

UN
( V )

QN
( kvar )

CN
( µF )

Ø x H

230

5
6.25
7.5

3 x 100
3 x 125
3 x 150

85 x 215
85 x 215
85 x 230

400

7.5
10
12.5
15
16.7

3 x 50
3 x 66.3
3 x 83
3 x 100
3 x 110

75 x 215
85 x 215
85 x 230
90 x 252
100 x 252

415

7.5
10
12.5
15

3 x 46.2
3 x 61.6
3 x 77
3 x 92.5

75 x 215
85 x 215
85 x 252
90 x 252

450

7.5
10
12.5
15

3 x 39
3 x 52.4
3 x 65.5
3 x 78.6

75 x 215
85 x 215
85 x 252
90 x 252

500

7.5
10
12.5
15

3 x 32
3 x 42.5
3 x 53.1
3 x 63.7

75 x 215
85 x 215
85 x 252
90 x 252

525

10
12.5
15

3 x 38.5
3 x 48.1
3 x 57.8

85 x 230
90 x 252
100 x 252

550

10
12.5
15

3 x 35.1
3 x 43.8
3 x 52.6

85 x 215
85 x 252
90 x 252

690

10
12.5
15
16.7

3 x 66.3
3 x 83
3 x 100
3 x 110

85 x 215
85 x 252
90 x 252
100 x 252

Vegetable Oil Impregnated

UN
( V )

QN
( kvar )

CN
( µF )

Ø x H

400

10
12.5
15
20
25

3 x 66.3
3 x 83
3 x 100
3 x 133
3 x 166

85 x 245
90 x 245
100 x 245
100 x 245
100 x 285

415

10
12.5
15
20
25

3 x 61.6
3 x 77
3 x 92.5
3 x 123
3 x 154

85 x 223
90 x 245
100 x 223
100 x 245
100 x 285

450

10
12.5
15
20
25

3 x 52.4
3 x 65.5
3 x 78.6
3 x 105
3 x 131

85 x 245
90 x 245
100 x 245
100 x 245
100 x 285

525

10
12.5
15

3 x 38.5
3 x 48.1
3 x 57.8

85 x 245
90 x 245
100 x 245

690

10
12.5
15
20
25

3 x 66.3
3 x 83
3 x 100
3 x 133
3 x 166

85 x 245
90 x 245
100 x 245
100 x 245
100 x 285

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Specifications

Self Healing
The most important feature of a metallised film capacitor is its ability to restore its electrical properties even after the occurrence of a short circuit between the plates. If a minor fault develops in the capacitor the metal layer will vaporise in the area of the breakdown. This will remove the fault and allow the capacitor to continue operating.

Construction
Capacitor elements are enclosed into an insulated container before being fitted into an aluminium can where they are impregnated with either a polyurethane resin or a non toxic biodegradable vegetable oil. Both impregnants are environmentally friendly. The use of the insulated container and impregnating medium provides a double layer of insulation between the cores and the case. Use of resin gives the capacitor good resistance to vibration. The capacitor assembly is fitted with a safety device.
Safety Device
The capacitor incorporates a special, patented, safety device which disconnects both connections to the element, in case of element breakdown, without affecting the case insulation, thus preventing the capacitor from exploding or burning. In the case of a permanent short circuit the current causes the dielectric to decompose, forming gas. This produces a pressure build up which expands part of the lid, where the terminals are mounted, breaking the internal connections and stopping current flow. The device is designed in different sizes for each size of capacitor to obtain the most effective response with both high and low short circuit currents up to 10,000A.

To enable the over pressure protection device to operate, a gap of at least 20mm must be left above the elements.

Important
When capacitors are installed on networks containing harmonics they may require special precautions, especially when there is a risk of resonances.
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Characteristic

Memcap 10

Memcap 20

Memcap 25

Voltage Range

230V - 550V

230V - 550V

230V - 690V

Phases

1

3

3

Rated
Frequency

50Hz Standard
60Hz on request

50Hz Standard
60Hz on request

50Hz Standard
60Hz on request

Capacitance
Tolerance

-5 + 10%

-5 + 10%

-5 + 10%

Case

Aluminium

Aluminium

Aluminium

Fixing
Stud

M8/M10/
M12 x 12mm

M12 x 12mm

M12 x 16mm

Dielectric

Polypropylene
Film

Polypropylene
Film

Polypropylene
Film

Impregnant

Polyurethane
Resin

Polyurethane
Resin

Polyurethane
Resin or
Vegetable Oil

Electrodes

Metallised
Film

Metallised
Film

Metallised
Film

Safety
Device

Overpressure
Disconnector

Overpressure
Disconnector

Overpressure
Disconnector

Discharge
Resistors

Not Fitted

Fitted
Internally

Fitted
Internally

Discharge
Time to 75V

Not
Applicable

3 Minutes

3 Minutes

Internal
Connection

Not
Applicable

Delta

Delta

Losses

< 0.4W/kvar

< 0.5W/kvar

< 0.3W/kvar

Degree of
Protection

IP00

IP30
with cover

IP20

Installation

Indoor

Indoor

Indoor

Service

Continuous

Continuous

Continuous

Altitude

< 2000m

< 2000m

< 2000m

Temperature
Class

-25/D

-25/D

-25/D

Storage
Temperature

-40 +85°C

-40 +85°C

-40 +85°C

AC Test Voltage
between
Terminals

2.15UN
for 2s

2.15UN
for 2s

2.15UN
for 2s

AC Test Voltage
Terminals to
Case

3kV for 10s

3kV for 10s

3kV 10s <660V
6kV 10s <660V

Maximum
Permissible
Voltage
Overloads

1.1 UN 8 hours/day
1.15 UN 30 min/day
1.2 UN 5 min/200 times
1.3 UN 1 min/200 times

Maximum
Permissible
Current

1.3 IN

1.3 IN

1.3 IN

Maximum
Switch In
Current

150 IN

100 IN

100 IN

Manufacturing
Standards

IEC 831 - 1/2
EN 60831 - 1/2
VDE 0560

IEC 831 - 1/2
EN 60831 - 1/2
VDE 0560

IEC 831 - 1/2
EN 60831 - 1/2

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Quotations Telephone:

08700 507 545 (option 1)

Quotations Facsimile:

08700 507 520
 E-mail: Quotations

Orders & Projects Telephone:

08700 507 545 (option 2 or 3)

Orders & Projects Facsimile:

08700 857 603
 E-mail: Orders & Projects

Address:

Eaton MEM, Reddings Lane,
Birmingham B11 3EZ - United Kingdom
 UK Sales Contacts & Distributors
 Eaton MEM Worldwide

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