KYN28A-12/24KV High Voltage Withdrawable Switchgear

KYN28A-12(24)kV indoor AC metal shield mid-set switchgear is a new generation of advanced medium voltage switchgear.

It is applicable to power system with 12kV and 24kV of three-phase AC rated voltage and 50 (60) Hz of rated frequency.

It is mainly used in power plants, industrial and mining enterprises and electrical power systems to receive and distribute electric energy, and to control, protect and monitor circuits and start high-voltage motor.

Product Highlights
  • Classic industrial design, with smooth lines, strong three-dimensional sense and high mechanical strength.
  • The overall safety of the switchgear is great.
  • It can realize the replacement of a single cabinet after a fault and quickly restore the power supply.
  • The dedicated all-metal secondary trunking can protect the internal arc fault from ablation, and ensure the reliable transmission of the current signal to the comprehensive protection to quickly remove the fault and prevent the expansion of the fault.

Overview

KYN28A-12/24KV High Voltage Withdrawable Switchgear (hereinafter referred to as “switchgear”) is suitable for three-phase AC 50Hz power system, used for accepting and distributing electric energy and controlling, protecting and monitoring the circuit.

It is a newly introduced and developed high-current, high-break switchgear, which can also be used as a high-voltage generator outlet.

This product conforms to the standards: GB3906 “3-35kV AC metal-enclosed switchgear”, GB/T11022 “Common Technical Requirements for High-voltage Parallel Switchgear and Controlgear Standards”, IEC298 “AC Metal-enclosed Switchgear and Controlgear with Rated Voltage of 1 kV or more than 52kV and below”.

KYN28-12

Product Features
  1. Metal armor closure effectively prevents the spread of accidents;
  2. Complete isolation of high and low voltage rooms;
  3. Adopting a double-sided maintenance design, compact structure and convenient maintenance;
  4. The circuit breaker adopts a modular design, with a simple and reliable structure and long service life;
  5. Complete five protection interlock functions to prevent misoperation and achieve door closing operation;
  6. Fully resistant to internal fault arc design, up to 40kA/1S;
  7. Various main switches can be selected, such as VCB, vacuum contactors, and load switch handcarts;
  8. It can be equipped with an electric operation module to achieve remote driving of circuit breakers and grounding switches;
  9. Intelligent components can be configured to achieve real-time monitoring functions such as circuit breaker mechanical characteristics, one click sequential control, visual operation, temperature, partial discharge, etc. At the same time, it can obtain comprehensive data from automatic collection, storage, and analysis equipment for power monitoring, energy consumption management, and health status assessment, comprehensively improving the full lifecycle management capability of switchgear.
Working Conditions
  1. Ambient temperature:-30℃ ~ +50℃;
  2. Altitude: Not exceed 2500m above sea level;
  3. Ambient humidity: Daily average RH ≤ 95%;
  4. Monthly average: RH ≤ 90%
  5. Water vapor pressure: Daily average RH ≤ 2.2kPa;
  6. Monthly average RH ≤ 1.8kPa;
  7. No violent vibration, bumps and vertical gradient not more than 8° of place

Note:

Allow to -30℃ to storage and transportation;

When the area of altitude exceed 1000m , according to the JB/Z102 «high voltage electrical appliances using the technical requirements of the altitude» , when the altitude is not more than 2000m, low pressure auxiliary equipment does not need to take any measures.

When the actual use conditions is different with the above mentioned information, the user and the manufacturer should be negotiated

Technical Parameters

product specification

No Name Unit Data
1 Rated voltage kV 12 15 24
2 Insuation level Lightning impulse withstand voltage kV 75/85 90/105 125/150
1min power frequency withstand volatge kV 42/48 48/55 55/65
3 Rated frequency Hz 50/60
4 Rated current A 630,1250,1600,2000,2500,3150,
4000
5 4s short time withstand current kA 20、25、31、31.5、40、50
6 Rated peak withstand current kA 50、63、80、100、125
7 Thickness
7.1 Base frame mm 2
7.2 Side panels mm 2
7.3 Top cover(with provisions of louvers for heat dissipation) mm 2
7.4 Doors mm 2
8 Live cable indicators for incoming & outgoing cables Supply Live display
9 Material Steel sheet coated with
aluminum-zinc alloy
10 Protection level Enclosure IP4X,partition of each compartment is IP2X
11 Standard IEC62271-200
12 Color RAL7032 / RAL7035

Ordering Instructions

The following technical information is required at the time of ordering

  1. Main circuit scheme plan number, use and main wiring system diagram, distribution room layout plan and arrangement and configuration diagram.
  2. Requirements for control, measurement and protection functions of switchgear as well as other blocking and sub-device requirements
  3. Model, specification and quantity of main components in the switchgear
  4. Such as switchgear between ooh feeder cabinets need busbar bridge connection. Specific requirement data such as rated carrying capacity of bus bridge, span of bus bridge, height from ground, etc. shall be provided.
  5. When the switchgear is used in special environmental conditions, it should be explained in detail when ordering.
  6. If there are other special requirements, please explain in detail when ordering.

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