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High voltage switchgear

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General
KYN28 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.
Service condition
1. Air temperature: Maximum temperature: +40ºC; Minimum temperature:-15ºC

2. Humidity: Monthly average humidity 95%; Daily average humidity 90% .

3.Altitude above sea level: Maximum installation altitude: 1000M.

4.Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.

5. No frequent violent shake

 

Conditions of use

Ambient temperature: 15~+40

Altitude: ≤1000m

Relative Humidity: daily average  relative humidity :≤95%, daily average vapor pressure not exceeding 2.2KPa; monthly mean relative humidity≤ 90%the average monthly water vapor pressure not exceeding 1.8KPa

Seismic intensityno more than 8

Surroundingsair should not be obviously polluted corrosive or flammable gaseswater vaporno severe vibration place

Under normal conditions of use specified beyond GB3906 negotiated by the user and the company.

The main technical parameters

                      Project

 

Unit

Parameter

Rated voltage

KV

3.67.212

Rated frequency

HZ

50

Breaker rating

A

63012501600200025003150

Switchgear rated current

A

63012501600200025003150

Rated short time withstand current4S

KA

202531.540

1Rated peak withstand currentpeak

KA

506380100

Rated short circuit breaking current

KA

202531.540

Rated short -circuit currentpeak

KA

506380100

Rated insulation level 1min power frequency withstand voltage

Polethe pole on the ground between

KV

243242

Fracture between

KV

243242

Lighting impulse

withstand voltagepeak

Polethe pole on the ground between

KV

406075

Fracture between

KV

467085

Protection class

 

Shell IP4Xamong compartmentwhen the circuit breaker compartment door open for the IP2X

 

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