KLD-MK Series

Low-voltage Power Capacitor

An innovative inflatable self-healing explosion-proof capacitor that adopts both safe and environmental protection technologies, with lower losses and smaller size.

PRODUCT OVERVIEW

KLD series low-voltage capacitor is characterized by an innovative cylindrical explosion-proof function that uses gradient metallized polypropylene film technology to ensure windings with ideal self-healing characteristics. We use gas instead of conventional dielectrics such as oil and resin, and dry technology to meet the higher requirement for environmental protection and safety as well as small size.

The operating stability of the capacitors is ensured by long-term vacuum drying technology. Unique vacuum evaporation and corrugated cutting technology and optimized winding sequencing make our capacitors not only have outstanding capacity-to-volume ratio, but also have strong capability to withstand AC, effective and peak current impacts. Portable assembly method and good heat dissipation ensure a greater degree of installation space saving while removing harmonic hazards and correcting power factor.

The technical design, testing and use of the product are in compliance with GB12747.1/GB12747.2/IEC60831 standards, with CE certificate and ROHS environmental certificate.

EXCELLENT SELF-HEALING PERFORMANCE

Vacuum evaporation process with gradient metal layers features balances between current-carrying capacity and self-healing properties.

Capacitor winding dielectric is made of gradient metallized polypropylene film. It evaporates metal particles through partial breakdown and re-form the insulating area, so that the capacitor isolates the fault point on its own and continues to work normally, achieving the self-healing function. At the same time, the capacity loss due to breakdown is negligible and does not affect the normal operation of the capacitor.

EDGE THICKENING AND CORRUGATED CUTTING TECHNOLOGY

Windings with edge thickening and corrugated cutting technology enhance the reliable connection between the gold-sprayed particles and the metallization layer.

Capacitor adopts film edge thickening reinforcement technology, which can enhance the reliable connection between the gold-sprayed surface and the electrode. The internal film uses both corrugated and smooth cutting methods, which maximizes the effective surface between the component and the metallization layer and improves surge current suppression capability.

SPECIAL GOLD-SPRAYED PROCESS

Outstanding surge resistance ensures low inductance connection between terminals and windings.

Fine zinc powder particles are injected into into the end face of the component by high-speed gold-sprayed technology and formed into a delicate gold-sprayed surface, on which you can lead out the electrode. In the whole process, each winding group should strictly control the thickness and flatness of the gold-sprayed layer to achieve the effect of low loss, stable performance and long service life.

MORE SAFETY CONSIDERATIONS

Consideration of user-friendly safety measures to prevent accidents and contacts

According to GB12747/IEC60831 standards, each capacitor has strictly passed the factory routine test: each three-phase capacitor terminal is equipped with an end cover that can prevent your fingers contact with the live component by accident. Also, it is combined with a discharging compartment, which can protect the personal safety of the personnel at the site.

HIGHLY EFFICIENT OVERPRESSURE
ISOLATION TECHNOLOGY

"Pressure-relief technology" makes the capacitor safer

KLD-MK series capacitors have a cylindrical aluminum can case with a "pressure-relief structure" inside. Pressure can be relieved by pushing up the top of the capacitor. At the same time, the internal metal wires are pulled off, effectively blocking current flow and isolating the capacitor.

Technical Parameters

Rated voltage 230~1000V，50/60Hz
Overvoltage 1.1Un(long term), 1.15Un(30min), 13Un(5min)
Overcurrent 2.0In
Surge current 500In
Capacitance tolerance ±5%
Dielectric High-quality polypropylene film
Perfusion material Inert insulating material gas, nitrogen gas
Dielectric loss ≤0.1W/kvar
Safety features Dry technology, overvoltage isolator, self-healing
Discharge time Discharge to below 50V in 50s with discharge resistance
External structure Cylindrical aluminum metal shell with safety bolts at the bottom
Ambient temperature -40/D; max. temperature +55°C, average daily max. +45°C, average annual max. +35°C, min. -40℃
Cooling method Natural or forced cooling
Installation position Anywhere, bottom bolt grounding
Relative humidity ≤95%
Altitude Conventional 2,000 meters (customized for higher altitude)
Protection degree IP20, Indoor assembly (installed with the cover that meets IPS4)
Service life ＞200000h
Technical Standards Complies with GB12747,IEC60831,VDE0560-46/47
Selection table

Model Capacity（kvar） Loss（W/kvar） Designed service life(h)
Single-phase
KLD-MK-5-1-280V 5 ≤0.1 200,000
KLD-MK-10-1-280V 10 ≤0.1 200,000
KLD-MK-15-1-280V 15 ≤0.1 200,000
KLD-MK-5-1-300V 5 ≤0.1 200,000
KLD-MK-10-1-300V 10 ≤0.1 200,000
KLD-MK-15-1-300V 15 ≤0.1 200,000
Three-phase
KLD-MK-12.5-480V 12.5 ≤0.1 200,000
KLD-MK-15-480V 15 ≤0.1 200,000
KLD-MK-20-480V 20 ≤0.1 200,000
KLD-MK-25-480V 25 ≤0.1 200,000
KLD-MK-30-480V 30 ≤0.1 200,000
KLD-MK-12.5-525V 12.5 ≤0.1 200,000
KLD-MK-15-525V 15 ≤0.1 200,000
KLD-MK-20-525V 20 ≤0.1 200,000
KLD-MK-25-525V 25 ≤0.1 200,000
KLD-MK-30-525V 30 ≤0.1 200,000

Technical Parameters


  • Rated voltage：230~1000V，50/60Hz

    Overvoltage：1.1Un(long term), 1.15Un(30min), 13Un(5min)

    Overcurrent：2.0In

    Surge current：500In

    Capacitance tolerance：±5%

    Dielectric：High-quality polypropylene film

    Perfusion material：Inert insulating material gas, nitrogen gas

    Dielectric loss：≤0.1W/kvar

    Safety features:Dry technology, overvoltage isolator, self-healing

    Discharge time：Discharge to below 50V in 50s with discharge resistance

    External structure：Cylindrical aluminum metal shell with safety bolts at the bottom

    Ambient temperature：-40/D; max. temperature +55°C, average daily max. +45°C, average annual max. +35°C, min. -40℃

    Cooling method：Natural or forced cooling

    Installation position：Anywhere, bottom bolt grounding

    Relative humidity：≤95%

    Altitude：Conventional 2,000 meters (customized for higher altitude)

    Protection degree：IP20, Indoor assembly (installed with the cover that meets IPS4)

    Service life：＞200000h

    Technical standards：Complies with GB12747,IEC60831,VDE0560-46/47

Selection table


Single-phase

  • Capacity（kvar）：5

    Loss（W/kvar）：≤0.1

    Designed service life(h)：200,000

  • Capacity（kvar）：10

    Loss（W/kvar）：≤0.1

    Designed service life(h)：200,000

  • Capacity（kvar）：15

    Loss（W/kvar）：≤0.1

    Designed service life(h)：200,000

  • Capacity（kvar）：5

    Loss（W/kvar）：≤0.1

    Designed service life(h)：200,000

  • Capacity（kvar）：10

    Loss（W/kvar）：≤0.1

    Designed service life(h)：200,000

  • Capacity（kvar）：15

    Loss（W/kvar）：≤0.1

    Designed service life(h)：200,000

Three-phase

  • Capacity（kvar）：12.5

    Loss（W/kvar）：≤0.1

    Designed service life(h)：200,000

  • Capacity（kvar）：15

    Loss（W/kvar）：≤0.1

    Designed service life(h)：200,000

  • Capacity（kvar）：20

    Loss（W/kvar）：≤0.1

    Designed service life(h)：200,000

  • Capacity（kvar）：25

    Loss（W/kvar）：≤0.1

    Designed service life(h)：200,000

  • Capacity（kvar）：30

    Loss（W/kvar）：≤0.1

    Designed service life(h)：200,000

  • Capacity（kvar）：12.5

    Loss（W/kvar）：≤0.1

    Designed service life(h)：200,000

  • Capacity（kvar）：15

    Loss（W/kvar）：≤0.1

    Designed service life(h)：200,000

  • Capacity（kvar）：20

    Loss（W/kvar）：≤0.1

    Designed service life(h)：200,000

  • Capacity（kvar）：25

    Loss（W/kvar）：≤0.1

    Designed service life(h)：200,000

  • Capacity（kvar）：30

    Loss（W/kvar）：≤0.1

    Designed service life(h)：200,000