indoor KYN28A-24 Metalclad Withdrawable Switchgear for power distribution, 3-phase AC

indoor KYN28A-24 Metalclad Withdrawable Switchgear for power distribution, 3-phase AC

power distribution box
KYN28A-24 Metalclad Withdrawable Switchgear
ISO9001:2008 IQNet&CQC Test Report
Standards : IEC 60298,

Summary of KYN28-24 switchgear 

KYN28-24 indoor metal-clad enclosed switchgear is applied to 3-phase AC 50Hz/24kV single bus bar and single bus bar section electric power system, with the function of “five preventions”. It has perfect and reliable prevention function against misoperation. The removing compartment of the switchgear may be assembled with vacuum circuit breaker, vacuum contactor, load breaker switch and VT handcart etc. power distribution box

Service conditions of KYN28-24 switchgear

Normal service conditions of switchgear as follows: 

Ambient temperature:
	Maximum	+40°C
	Maximum 24 hour average	+35°C
	Minimum (according to minus 15 indoor classes)	-15°C
Ambient humidity:
	Daily average relative humidity	less than 95%
	Monthly average relative humidity	less than 90%
	Height above sea level at site	less than 1000m
Earthquake intensity	less than 8 degree
Height above sea level	less than 1000m

This product should not be used under conditions of fire, explosion, earthquake and chemical corrosion environments.

Special service conditions 

Each special service condition should be proposed in advance and confirmed by the manufacturer and user.

The dielectric strength of the air will be reduced in when altitude is over 1000m at site.

If the ambient temperature is over the maximum degree, the capacity of the using current must be lower than the designed current’s for both main bus bar and branching bus bar. The installation of aerator is propitious to reduce heat.

Structural feature of KYN28-24 switchgear

The enclosure is made of aluminum-zinc plated steel by CNC machine with high precise dimension, short production cycle, excellent mechanical strength and nice appearance.

The switchgear is composed by the enclosure and drawable CB. The panel and main components are shown in figures. The incoming panel and outgoing panel are the basic schemes of switchgear panel. There are other derivative schemes, such as: contact panel or metering panel. In addition, there are so many schemes of the switchgear panel with load switch, VCB (Vacuum Circuit Breaker) truck, VC (Vacuum Contactor) truck, disconnect truck. The bus-bar compartment, CB truck compartment, cable compartment and relay compartment are separated by metal sheet. The switchgear has flexible operation for CB truck’s movement and clear position instruction. The earth switch allows making short circuit current and gains creditable mechanical interlock. The protection degree of enclosure is IP4X; the protection degree is IP2X when the door of VCB room is open and the truck is drawn out.

The panel has two modes of configuration: single-face configuration and face-to-face configuration.

The details of structure and main components are referenced in order documents.

 Technical specification of KYN28-24 switchgear

Item	Unit	Data