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MKSP-I18

AC METALLIZED POLYPROPYLENE FILM CAPACITORS
FOR MOTOR APPLICATIONS

APPLICATION
The MKSP-I18 capacitors for motor run applications are designed to use in single-phase electric motors as running capacitors. They provide the reliable and safe operation. Due to their very low loss level, they can also be used for applications in energy electronics, provided the specified operating conditions and permissible loads are not exceeded.

TECHNICAL DATA
The technical data are given in the sheets enclosed for particular capacitor versions. The detailed technical requirements are specified in the Technical Specifications WT-04/MIFLEX/MKSP-I18. All capacitor versions have the application class A for the service life of 30000 hours and the safety class P2. The safety class P2 means that capacitor is equipped with overpressure protection (break-action mechanism) which disconnects the capacitor form the mains in case of its failure. The MKSP-I18 capacitors meet the requirements of Low Voltage Directive 73/23/EWG and EN 60252-1. They have been approved by the VDE Testing and Certification Institute in Germany (VDE approval mark- Certificate no 40010043).

CAPACITOR VERSIONS

The MKSP-I18 capacitors are made of self-healing metallized polypropylene film having low dielectric loss. The winding element is placed into an aluminium case, filled with polyurethane resin and sealed with special terminal cover. The capacitors can be fixed by an M8 bottom stud or special quick-fixing stud.

The basic versions of capacitor are as follow:

VERSION 1:
Sub-version 0  - aluminium case equipped with M8 stud
                       - solder terminals; 2,8x0,8mm
Sub-version 1  - aluminium case equipped with M8 stud
                       - tab connectors; 6,3x0,8mm

VERSION 2:
Sub-version 0 - aluminium case equipped with M8 stud
                      - twin cable equipped with receptacles 6,3mm
                      - insulating cap to provide the IP64

VERSION 3:
Subversion 0  - aluminium case equipped with quick-fixing stud
                      - tab connector 6,3x0,8mm

Note: The MKSP-I18 capacitors do not contain PCB or any other toxic impregnating material.

MOUNTING INSTRUCTIONS
All capacitor versions can be mounted without restrictions in any position. In order to ensure proper operation of break-action mechanism, a clearance of at least 10mm must be provided above the terminals as shown in the figure below:

In case of permanent short-circuit or ageing at the end of the capacitor's useful service life, an increasing number of self-healing breakdowns may cause rising pressure inside the capacitor, With rising pressure the case begins to expand by opening the fold crimp. As a result, the connecting wires are separated at the attenuated spots and the current path is interrupted irreversibly.

Note: The connection cables or leads used for these capacitors should have the appropriate length and flexibility so as not to impede the expanding of the break-action mechanism.

OPERATING CONDITIONS
The MKSP-I18 capacitors have been designed for continuous operation at the rated voltage, temperature and humidity according to climatic category.

SERVICE LIFE
In accordance with EN60252, the capacitors are subjected to endurance test with the test voltage of 573,75 VAC and the test temperature of +85°C for 3000h. The above mentioned endurance test is equivalent to the service life expectancy of 30000h at the rated voltage of 425VAC and the temperature of +85°C in accordance with the following relation:

where:

L2 - service life expectancy (hours)
L1 - test duration acc. to EN60252-1
U1 - test voltage e.g. 1,35UR for L1 =3000h  
U2 - working voltage e.g. rated voltage UR =250VAC  

MKSP-I18 pl-3.jpg

where:

T1 - endurance test temperature (e.g. +85°C)
T2 - working temperature (temperature of capacitor case e.g. +85°C)

In accordance with the above relation, the service life of capacitors increase markedly as a result of temperature and voltage decrease.

Example
In case of the rated voltage of 425VAC and the capacitor case temperature of +70°C, the designed service life shall be 90000 hours and is equivalent to the capacitor lifetime of about 10 years.

Notes:

  1. The excessive temperatures, overvoltages and harmonic distortions may reduce the service life expectancy or increase the failure rate.

  2. No vapour condensation on the capacitor surface is allowed (excluding the version 2). The limit temperature

 

Capacitor dimensions:

Capacitance
C [µF]

Dimensions
D [mm] L [mm]
2

30

 62
2,5
3
3,5
4
4,5
5
5,5
6

35
7
8

TECHNICAL DATA:

Rated capacitance:

acc. to the table

Capacitance tolerance:

±5 or ±10%

Rated voltage UR :

425V~/50Hz,

Climatic category:

25/085/21,

Tangent of the loss angle:

≤ 20 x 10-4 /UR -50Hz,

Dielectric strength:

  

between terminals

2 UR - 60s,
between terminals connected together and case

min 2kV / 50Hz - 60s,

Case:

aluminium,

Specifications:

WT-04/MIFLEX/MKSP-I18,

Application class:

425 V~ A (30000 h),

Safety class:

P2,

Protection degree:

IP00,

The capacitors meet the requirements of:

EN- 60252-1, VDE 0560 cz.8,

Approval mark:

VDE

 

Capacitor dimensions:

Capacitance
C [µF]

 Dimensions
D [mm]  L [mm] a [mm]
2

30

 62

18
2,5
3
3,5
4
4,5
5
5,5
6

35

 20
7
8

TECHNICAL DATA:

Rated capacitance:

acc. to the table

Capacitance tolerance:

±5 or ±10%

Rated voltage UR :

425V~/50Hz,

Climatic category:

25/085/21,

Tangent of the loss angle:

≤ 20 x 10-4 /UR -50Hz,

Dielectric strength:

  

between terminals

2 UR - 60s,
between terminals connected together and case

min 2kV / 50Hz - 60s,

Case:

aluminium,

Specifications:

WT-04/MIFLEX/MKSP-I18,

Application class:

425 V~ A (30000 h),

Safety class:

P2,

Protection degree:

IP00,

The capacitors meet the requirements of:

EN- 60252-1, VDE 0560 cz.8,

Approval mark:

certyfikat VDE

TECHNICAL DATA:

Rated capacitance:

2;2,5;3;3,5;4;4,5;5,5,5 µF

Capacitance tolerance:

±5 or ±10%

Rated voltage UR :

425V~/50Hz,

Climatic category:

25/085/21,

Tangent of the loss angle:

≤ 20 x 10-4 /UR -50Hz,

Dielectric strength:

  

between terminals

2 UR - 60s,
between terminals connected together and case

min 2kV / 50Hz - 60s,

Case:

aluminium,

Specifications:

WT-04/MIFLEX/MKSP-I18,

Application class:

425 V~ A (30000 h),

Safety class:

P2,

Protection degree:

IP00,

The capacitors meet the requirements of:

EN- 60252-1, VDE 0560 cz.8,
Approval mark: VDE

Terminals:

Twin cable 2x0,75mm2 having the VDE and HAR approvals for increased rated voltage of 300/500 V, 90°C and receptacles 6,3 acc. to IEC760, DIN 46249 and DIN 46247.

 

TECHNICAL DATA:

Rated capacitance:

6; 7 ; 8 µF

Capacitance tolerance:

±5 or ±10%

Rated voltage UR :

425V~/50Hz,

Climatic category:

25/085/21,

Tangent of the loss angle:

≤ 20 x 10-4 /UR -50Hz,

Dielectric strength:

  

between terminals

2 UR - 60s,
between terminals connected together and case

min 2kV / 50Hz - 60s,

Case:

aluminium,

Specifications:

WT-04/MIFLEX/MKSP-I18,

Application class:

425 V~ A (30000 h),

Safety class:

P2,

Protection degree:

IP00,

The capacitors meet the requirements of:

EN- 60252-1, VDE 0560 cz.8,
Approval mark: VDE