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Medium Armored Type Movable AC Metal-Enclosed Switchgear KYN28

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Overview

      The KYN 28-12 AC metal-clad indoor withdrawable switchgear (3.6-12 kV, 3-phase, AC, 50/60Hz) produced by our company is a power transmission and distribution device for accepting and distributing electric power in the sectionalized single-bus system, which is mainly used for accepting electric power of small and medium-sized generators, power distribution of industrial and mining enterprises, accepting and transmitting electric power for secondary substations, starting of large-sized HV motors and used in power plants, its functions are for control, protection and monitoring.

123213

Product features

1.VD4 vacuum circuit breaker from ABB or domestic VS1 vacuum circuit breaker may be chosen.

2.The cubicle with high precision is assembled with imported steel plates coated with zinc & aluminum, which will not get rusty.

3.Metal-clad completely, each function unit thoroughly separated.

4.Even if the cubicle door is closed, the built-in withdrawable unit driven by a screw can be moved.

5.A simple and effective fail-safe interlock will prevent error operation.

6.Effective protection measures will ensure safety and prevent foreign materials and pests from entering.

7.The cable terminal compartment is large enough to connect lots of cables.

8.Both operation and monitoring are easy.OFast grounding switches for earthing and short-circuit.

9.Through the plateau type, seismic, internal combustion arc test, meet the demand of a broader market.

Types of meaning

K Y N 28 -
12

Met clad enclosed switchgear

Shift type

Use conditions (indoors) Design serial number

Rated voltage

(kV)




Long service life 

During the period of free maintenance, wear-resisting, anti-corrosive, quality guaranteed


1

Bottom of drawer

Plug in design, convenient wiring installation


2

Standard steel plate

Steel plate, with a standard safety when using solid durable


3

High quality components

The installation of high quality components is guaranteed


2


PRODUCT SIZE DESCRIPTION

03

Height B(mm) 2300
Width A(mm) 40KA rated current of small branch bus is up to 1250A, thermal stable current 40KA 800
the rated current of small branch bus is over 1600A 100
Depth C(mm) cable incoming and out going 1500
Overhead incoming and out going 1660
Wt.(kg) 700-1200

Product structure

11

A bus compartment
B circuit breaker compartment
C cable compartment

D relay instrument compartment
1.1 pressure-releaf cover
1.2 secondary passage cover
3 bus bushing
4 main bus-bar
5 stationary contact
6 contact's box
7 ст
8 grounding switch
9 cable
10 zinc-oxide surge arrester 
11 grounding bus-bar
12 partition
13 shutter
14 secondary contact block
15 handcart of circuit breaker 
16 heate
17 operating hole of handcart 
18 operating shaft of grounding switch
19 bottom plate


Main technical parameters

ProjectUnitData
Rated voltagekV3.6、7.2、12
Rated frequencyHz50
Circuit breaker rated currentA630、 1250、 1600、 2000、 2500、 3150、 4000
Rated current of switchgearA630、 1250、 1600、 2000、 2500、 3150、 4000
Rated short-time withstand current (4s)kA16、20、25、31.5、40、50
Rated peak withstand current (peak value)kA40、50、63、80、100、125
Rated short-circuit breaking currentkA16、20、25、31.5、40、50
Rated short-circuit making current (peak value)kA40、50、63、80、100、125
Rated insulation level1min power frequency withstand voltageinterpolar, Between poleskV24、32、42
between open contactskV24、32、48
Lightning impulse withstand voltage (peak value)interpolar, Between poleskV40、60、75
between open contactskV46、70、85
Protection grade
Note: 1. Short-circuit capacity of CT should be considered separately.
2. Rated current of 3000m~4000m above sea level W1250A Rated breaking current W31.5ka.



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