Description

China KYN28-12 indoor metal-clad withdrawable switchgear (hereinafter short as switchgear) is a complete power distribution device for 3.6~24kV,3-phase AC 50Hz,single-bus and single-bus sectionalized system. It is mainly used for power transmission of middle/small generators in power plants; power receiving, transmission for substations in power distribution and power system of factories, mines and enterprises, and starting of large high-voltage motor, etc.,so as to control, protect and monitor the system. The switchgear meets IEC298,GB3906-91.In addition to be used with domestic VS1 vacuum circuit breaker, it can also be used with VD4 from ABB,3AH5 from Siemens domestic ZN65A,and VB2 from GE, etc.,it is truly a power distribution device with good performance. In order to meet the requirement for wall mounting and front-end maintenance, the switchgear is equipped with a special current transformer, so that the operator can maintain and inspect it in front of the cubicle.

•  Ambient temperature: Maximum temperature:+40℃     Minimum temperature: -15℃

•  Ambient humidity: Daily average RH no more than 95%;Monthly average RH no more than 90%

•  Altitude no higher than 2500m;

• The air around without any pollution of duty,smoke,ercode or flammable air,steam or salty fog;

Technical parameters

Structure & Basic Components of Switchgear

Overall size and weight

Notice

when the rated current is more than 1600A, cubicle width shall de 1000 mm, and cubicle height will be 1660mm and for schema of rear overhead line in.

• Width of cabinet:650mm(compound insulation)or 800mm(air insulation) at current<1250A;

• Width of cabinet:1000mm at current>1250A;

• Depth of cabinet:1400mm,at cabinet width of 650mm(compoud insulation)when employing theconfiguration of incoming and outgoing cables;

• Depth of cabinet:1500mm,at cabinet width of 6800mm(air insulation)when employing theconfiguration of incoming and outgoing cables;

• Depth of cabinet:1600mm,when employing the configuration of rear overhead incoming andoutgoing cables.

  

Structure Features

compartment
busbar compartment; circuit breaker compartment; cable compartment; low-voltage compartment.
1 - main device: circuit breaker, contactor,
2 - current transformers,
3 - earthing switch,
4 - voltage transformers,
5 - support-bushing insulators,
6 - bushing insulators
7 - surge arresters,
8 - support insulators (reactance),
9 - main busbars.
10 - connecting (distribution) busbars,
11 - earth-fault current transformer,
12 - earthing conductor,
13 - metal movable particions,
14 - cable ducts (optionally),
15 - vent flaps,

Dimension

Dimension in brackets means dimension of heavy-current cubicle