KYN28A-12(Z)(NB) Metalclad AC Enclosed Switchgear, Withdrawable Type

1 General
1.1 Electric ratings: rated voltage 3.6-12KV, the rated current up to 3150A , AC50Hz
1.2 Application: applicable In the system of three phase AC single busbar bar, double busbar bar and single busbar bar stand-by pass to receive and distribute the power.

1.3 Standards: IEC60298

2 Type Designation

KYN 28A-12(Z)(NB)

(B) Improvement code

(N) Company code

(Z) VCB

(12) Rated voltage
(28A) Design No.
(N) Indoor type
(Y) Withdrawable type

(K)Metalclad type

3 WorkingConditions
3.1 Ambient temperature-10 40
3.2 Altitude:≤1000m
3.3 Humidity: daily average≤95%, Monthly average≤90 %
3.4 Earthquake intensity≤magnitude 8
3.5 Applicable In the places without corrosive and flammable gas

Note: Customized products are available on your requirements

4 Main Technical Data

4 Main Technical Data
No.	Items	Unit	Data
			Matched VCB
			ZN63A-12(Vs1)	VD4,VC
1	Rated voltage	KV	12	12
2	1 min power frequency  withstands voltage	KV	42	42
3	Rated thundering withstands voltage	KV	75	75
4	Rated frequency	HZ	50	50
5	Rated current	A	630 1250 1600 2000 2500 3150
6	Rated current of branched bus	A	630 1250 1600 2000 2500 3150
7	Rated short-time withstands current  (RMS)	KA	16 20 25 31.5	16 20 25 31.5
8	Rated  withstands current (peak)	KA	40 50 63 80 100 125	41 50 63 80 100 125
9	Rated short-circuit continuous time	S	4	3
10	Protection degree		The enclosure: IP4X. When the chamber door and trolly door opened, the protection degree is IP2X
11	Weight	KG	700-1200	700-1200

8 Ordering Information

The following information should be specified.

8.1 Connection diagram and the allocation diagram.

8.2 The secondary connection diagram and the terminals allocation diagram.

8.3 Name, type, specification and list of adopted components

8.4 List of electric equipments

8.5 Material, type and quantity of main bus bar.

8.6 Type and quantity of extra accessories and spare parts, if needed

8.7 Customized products are available on your requirements

Notes: The installation chart and some structure picture is appendix in the company profile column of self-defined column   KYN28A-12(Z)(NB) Metalclad AC Enclosed Switchgear, Withdrawable Type, which helpful to know the detail of information for this type of product.