KYN28A-12(2) Mid-mounted armored removable metal-enclosed switchgear-High Voltage_Low Voltage_Substation

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Address: 4-2, Building E, Huazhong Enterprise City, 16 North Avenue, Hankou, Wuhan City

Tel: 027-61503288

189 9560 1588

KYN28A-12(2) Mid-mounted armored removable metal-enclosed switchgear

Classification:

Switch cabinet

Electrical products with voltage levels ranging from 3.6kV to 550kV, used for power generation, transmission, distribution, energy conversion, and consumption in the power system to provide on/off, control, or protection functions

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hbctdq@hbctdq.com

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Product Details

Overview

KYN28A12(2) The mid-mounted armored removable metal-enclosed switchgear (hereinafter referred to as switchgear) is a new type of indoor switchgear developed with reference to the technology of ABB Company in Switzerland and on the basis of widely absorbing the advantages of similar products at home and abroad. The switchgear adopts a mid-mounted structure with high technical performance index. It is suitable for 3.6-12kV three-phase current 50Hz indoor single bus or single bus sectional power distribution system. It is used for power plants, industrial and mining enterprises, buildings, hotels, municipal construction and other departments to receive and distribute electric energy, and to control, protect and monitor the circuits.

The switchgear is fully compliant with GB3906, ICE-298 and other standards.

Features

◆ ABB VD4 or domestic advanced VS1 vacuum circuit breaker is selected for the switch cabinet. The mid-mounted structure saves about 50% of the space in the handcart room of the circuit breaker, which is more conducive to the installation of cables.

◆ The protection grade of the shell is IP4X.

Small size, reduce the occupied area.

◆Light weight, high mechanical strength and assembly precision, beautiful appearance.

The cabinet shell has strong corrosion resistance and oxidation resistance.

◆ The electrical clearance in the cabinet is greater than 125mm, and the air clearance in the composite insulation is greater than 60mm.

◆ It has the ability to resist internal arc accidents and ensure the safety of operators in case of accidents.

The product has a perfect mechanical interlock device to prevent misoperation, which can effectively prevent electrical misoperation.

Main technical parameters

◆ Rated voltage 12(kV)

◆ Rated insulation level

1min power frequency withstand voltage 42(kV)

Lightning impulse withstand voltage 75(kV)

◆ Rated frequency 50(Hz)

◆ Bus rated current: 630, 1250, 1600, 2000, 2500, 3150(A)

◆ Rated current of branch bus: 630, 1250, 1600, 2000 and 2500(A)

◆ 4S rated thermal stability current: 16, 20, 25, 31.5, 40, 50(kA)

◆ Rated dynamic stable current: 40, 50, 63, 80, 100, 125(kA)

◆ Rated short-circuit breaking current of circuit breaker: 16, 20, 25, 31.5, 40, 50(kA)

◆ Rated short-circuit closing current of circuit breaker: 40, 50, 63, 80, 100, 125(kA)

◆Control loop

AC: 110, 220(V)

DC: 48, 110, 220(V)

◆ Mechanical life: 20000 (times)

◆ Cabinet shell outer wall protection: grade IP4X

◆ Protection for the opening of the circuit breaker chamber door: grade IP2X

Normal use environmental conditions

The altitude is not more than 1000 meters.

◆ Ambient temperature upper limit 400C, lower limit -15 C

◆ Relative humidity: the daily average value is not more than 95%, and the monthly average value is not more than 90%.

The surrounding air is not corrosive or flammable gas, water vapor and other obvious pollution.

◆ No frequent violent vibration.

◆ Beyond the above conditions of use, users have special requirements, can negotiate with the manufacturer special.

internal structure

The switch cabinet has the functions of overhead incoming and outgoing lines, cable incoming and outgoing lines, bus connection, etc. Mainly suitable for power plants, substations, petrochemical, metallurgical steel rolling, light industry and textile, factories and mining enterprises and residential areas, high-rise buildings and other different places. It mainly includes high-voltage isolating switch and grounding switch, high-voltage load switch, high-voltage automatic coincidence and segmenter, high-voltage operating mechanism, high-voltage explosion-proof distribution device and high-voltage switch cabinet.

Correct Selection of Breaker Breaking Capacity
On the primary system diagram, the selected circuit breaker, indicating the circuit breaker model, rated working voltage and rated working current, must also be selected for the breaking capacity of the circuit breaker. With user drawings, the breaking capacity of the circuit breaker is not selected, which makes it difficult for the manufacturer to carry out engineering design. The breaking capacity selection should be based on the system short-circuit parameters. If the manufacturer does not understand the system short-circuit parameters, it is difficult to make the correct choice. There are also some user drawings, regardless of the system short-circuit parameters, blindly select high-break parameters, resulting in unnecessary waste of funds. The correct choice of breaking capacity is very important, not only to ensure safe operation, but also to consider reducing product costs.

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KYN28A-12(2) Mid-mounted armored removable metal-enclosed switchgear

+86 27-61503288

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+86 189 9560 1588

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