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KLD-MK Series

High-voltage Power Capacitors

KLD-MK series high-voltage power capacitors provide reactive power for industrial frequency AC power system, which is used to improve the power factor of the grid, reduce the grid loss, improve the quality of voltage and the efficiency of power generation and power supply equipment.

PRODUCT OVERVIEW

High-voltage shunt capacitors are mainly used in 10kV-35W industrial frequency power system for reactive power compensation, improving power factor and adjusting grid voltage. It fully maximizes the efficiency of the equipment and improves the quality of power supply.

KLD-MK series high-voltage power capacitor is designed with advanced technologies. It chooses polypropylene film as full-film dielectric which is easy to Impregnate and uses PCB-free, safe and environmentally friendly insulating oil as impregnating agent. The case has high specifications of explosion resistance to ensure the safety of use. Special considerations for the power grid make the field strength, material and other aspects are designed to be more adaptive to the grid, better meeting the operating requirements of the power grid.

ENVIRONMENTALLY FRIENDLY INSULATING OIL

As an impregnant, the insulating oil has excellent dielectric properties and stable chemical properties, with no chlorine or chlorinated biphenyls, which can be completely biodegradable.

No pollution, low freezing point, low viscosity, good low-temperature performance; good absorption to the gas generated by partial discharge, high ignition point, excellent resistance to over-voltage.

SPECIAL GAS MIXED IN INSULATING OIL

Trace water in the dielectric and impregnant is one of the important issues affecting the performance of capacitor partial discharge and this process can further remove the trace water in the oil medium

Improve the partial discharge performance and electrical resistance to accelerate the movement of the impregnant and facilitate heat dissipation. Reduce the weight of the impregnant medium and thus reduce the overall weight, with better reliability and longer service life.

RELIABLE WELDING PROCESS

The case is made of stainless steel plate integrated as a whole and welded by automatic argon-shielded welding machine, with high-strength crimp-type casing welded on the cover.

FOLDED EDGE STRUCTURE OF POLAR PLATE

The electrode edge of the polar plate adopts the folded edge structure, and the edge is in the shape of circular arc, which improves the field strength distribution and the ratio of the maximum edge field strength to the average field strength is reduced from 6 times to about 2 times. The points of high field strength are eliminated by removing burrs on the edge of the polar plate, and the electric field strength is higher than the traditional process, which reduces the losses of the capacitor and lowers the probability of partial discharge of the capacitor, and thus improves the reliability of the insulation.

Technical Parameters

Rated voltage	6~35kV，50Hz/60Hz(others can be customized)
Dielectric structure	High-quality polypropylene film、environmentally friendly insulating oil
Overvoltage range	1.1Un long-term, 1.15Un30min, 1.3Un5min, 3Un1min
Overcurrent capacity	1.5In long-term operation (higher can be customized)
Dielectric loss	＜0.2W/kvar
Capacitance tolerance	-5%~+5%
Insulation level	3kV/40kV，6kV/60kV，10kV/75kV，20kV/125kV
Interpolar withstand voltage	10 seconds AC voltage under 2.15Un
Service life	20 years (under normal use)
Temperature rating	-40℃~+50℃(or higher)
Safety protection	Internal fuse (or external fuse) protection
Discharge protection	Built-in discharge device, ＜50V/5min (higher can be customized)
Cooling method	Natural cooling (ventilation cooling can be used in the cabinet)
Loss angle tangent value	≤0.0002
Execution standard	IEC 60871/EN60871，GB/T11024，VDE0560,etc

Selection table

Product specifications for single-phase capacitors of 6kV system

Specification Model	Rated capacity（kvar）	Rated voltage（V）	Rated current（A）	Internal protection components
KLD-MK-H1-50-6.6/√3kV	50	6.6/√3	13.12	External fuse
KLD-MK-H1-100-6.6/√3kV	100	6.6/√3	26.24	External fuse
KLD-MK-H1-200-6.6/√3kV	200	6.6/√3	52.49	Internal fuse
KLD-MK-H1-334-6.6/√3kV	334	6.6/√3	87.65	Internal fuse
KLD-MK-H1-417-6.6/√3kV	417	6.6/√3	109.43	Internal fuse
KLD-MK-H1-500-6.6/√3kV	500	6.6/√3	131.21	Internal fuse
KLD-MK-H1-50-7.2/√3kV	50	7.2/√3	12.03	External fuse
KLD-MK-H1-100-7.2/√3kV	100	7.2/√3	24.06	External fuse
KLD-MK-H1-200-7.2/√3kV	200	7.2/√3	48.11	Internal fuse
KLD-MK-H1-334-7.2/√3kV	334	7.2/√3	80.35	Internal fuse
KLD-MK-H1-417-7.2/√3kV	417	7.2/√3	100.31	Internal fuse
KLD-MK-H1-500-7.2/√3kV	500	7.2/√3	120.28	Internal fuse

Product specifications for single-phase capacitors of 10kV system

Specification Model	Rated capacity（kvar）	Rated voltage（V）	Rated current（A）	Internal protection components
KLD-MK-H1-50-11/√3kV	50	11/√3	7.87	External fuse
KLD-MK-H1-100-11/√3kV	100	11/√3	15.75	External fuse
KLD-MK-H1-200-11/√3kV	200	11/√3	31.49	Internal fuse
KLD-MK-H1-334-11/√3kV	334	11/√3	52.59	Internal fuse
KLD-MK-H1-417-11/√3kV	417	11/√3	65.66	Internal fuse
KLD-MK-H1-500-11/√3kV	500	11/√3	78.73	Internal fuse
KLD-MK-H1-50-12/√3kV	50	12/√3	7.22	External fuse
KLD-MK-H1-100-12/√3kV	100	7.2/√3	14.43	External fuse
KLD-MK-H1-200-12/√3kV	200	12/√3	28.87	Internal fuse
KLD-MK-H1-334-12/√3kV	334	12/√3	48.21	Internal fuse
KLD-MK-H1-417-12/√3kV	417	12/√3	60.19	Internal fuse
KLD-MK-H1-500-12/√3kV	500	12/√3	72.17	Internal fuse