KYN28A-12 (GZS1-12) Model Indoor AC Metal Clad Intermediate Switchgear

1. General

1.1 Ratings: system voltage 3.6—12kV, rated current up to 3150A, AC 50/60Hz.

1.2 Application: applicable for power receiving and distribution and for control, protection and measurement of circuit.

1.3Standards: IEC 62271-200

3.Working Condition

3.1 Ambient air temperature: -15°C~~ 40°C (-25°C~~ 45°C available as customized products)

3.2 Altitude: W4000m

3.3 Relative humidity:

Daily average <95%, daily average water vapor pressure <2.2kPa

Monthly average W90%, monthly average water vapor pressure W1.8kPa

3.4 Earthquake intensity: W magnitude 8

3.5 Applicable in places without corrosive, flammable gas and steam and places no regular severe shock. Note: Customized products available.

4. Feature

3.1 KYN28A-12(Z)(GZS1) and KYN28A-12(Z)(NB) available.

3.2 Reliable "anti-5" mechanical latch, convenient and safe maintenance,

3.3 Both VCB of ZN63n -12 developed by our company and VD4, VB2 AND 3AH manufactured by other companies around the world can be matched with the switchgear.

5. Main Technical Parameter

Item	Unit	Data
Rated voltage	kV	3.6, 7.2,12
Rated frequency	Hz	50
Rated current of circuit breaker	A	630,1250,1600, 2000,2500,3150,4000,5000
Rated current of switchgear	A	630,1250,1600, 20002500,3150,4000, 5000
Rated short time withstand current (4s)	kA	1620,25,31.5,40,50
Rated withstand current (peak)	kA	40,50, 63,80, 100,125
Rated short circuit breaking current	kA	16,20,25,31.5,40,50
Rated short circuit closing current (peak)	kA	40,50, 63,80, 100,125
1 min power frequency Between poles? pole to earth	kv	24,32,42
H3TPn withstand voitase between open contacts	kV	24,32,48
insulation Lightning impulse        Between poles, pole to earfli kV	KV	40, 60, 75
"ye* withstand voltage (peak) Between open contacts	kV	46, 70,85
Protection level	Shell: IP4X; IP2X when the CPT and CB doors are open.

Note: 1. The short circuit capacity of the current transformer should be separately considered.

          2. See technical parameters of ZN63A-12 in related catalogues of our company.

6. Structural diagram of switchgear

A、 the bus bar room

B、 the circuit breaker handcart room

C、 the cable room

D、 the relay instrument room

1、 cover

2、 branch small bus bar

3、 bus bar pipe

4、 main bus bar

5、 static contact installation

6、 contact box

7、 current mutual induction

8、 earthed switch

9、 cable

10、 arrester

11、earthed main bus bar

12、 mother board

13、control the small bus bar

14、 earthed switch operating mechanism

15、draw-out horizontal clapboard

16、 heat installation

17、circuit breaker handcart

18、twice connector

19、clapboard (valve )

20、loading and unloading clapboard

21、decompression channel

01 It has perfect mechanical and electrical double locking and anti error operation function.

02 The roof part adopts ventilation design, that is, it can meet the need of dust prevention and no need to consider the problem of pressure relief.

03 Cabinet use. single axis, double shaft and so on, to meet different requirements.

04 Using Aluminum-zinc composite flanging process, application of flat screw installation, flexible use, convenient, simple and practical, good performance.