12kv/630A Medium Voltage Withdrawable Metal Clad Switchgear

• Customization: Available
• Certification: VDE, CCC, ISO9001
• Shell Material: Steel Plate
• Model NO.: Kyn28-12
• Installation: Removable
• Structure: Withdrawable
• Current: AC
• Protection Level: IP4X
• Material: Cold Rolled Steel
• Application: Electric Power Transmission
• Transport Package: Wooden
• Trademark: Chenghe
• Origin: Wenzhou China
• Production Capacity: 5000 Sets/Year

Product Description

Product Description

dKYN28 indoor metal-clad

KYN28 indoor metal-clad withdrawable switchgear(hereafter short as switchgear) is a complete power distribution device for 3.6~24KV, 3 phase AC 50Hz, single bus sectionalized system. It is main 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 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.

1. General
KYN28A-12 Indoor AC metal-clad switchgear is a set of power distribution device of rated voltage 3 to 12KV three-phase AC 50Hz of single bus bar and single bus bar segmental system. It is applicable to power transmission of the power plant, power receiving and distribution of the electric system and the substation of the industrial enterprises to fulfill the aims of control, protection and inspection.

2. Use condition
Environment temperature: -15°C to +40°C
Relative humidity: daily average ≤95% monthly average≤90%
Height above sea level: ≤1000m
Earthquake magnitude ≤8
No fire, explosion danger, serious pollution, or chemical erosion occasion.

3.Main characteristics
The structure of the cabinet is bolt by aluminum zinc alloy board after the process of CNC machine tool and multi bending technology;

All the operation can be done after the cabinet door is closed;
High protection degree, protect the intruder of sundries and pests;
Simple and effective "five-prevention" lock function, protect error operation;
Can adopt VS1 and CD4 vacuum circuit breaker;

Easy replacement of the circuit breaker and free exchange of the drawers;
The cabinet can be installed by the wall, maintenance in the front, which reduces the floor space;

Large space of the cable room can connect many cables;

The relay room and the cable room can respectively add a heater to avoid freezing or erosion.

 

Main technical specifications
 

No.	Item		Unit	Parameters
1	Rated Voltage		KV	12
2	Rated Frequency		Hz	50/60
3	Rated Current		A	630 1250 1600 2000 2500 3150
4	Branch busbar rated current		A	630 1250 1600 2000 2500 3150
5	Main busbar rated current		A	630 1250 1600 2000 2500 3150
6	1min power frequency withstand voltage	Dry	KV	38	50/60
				48	60/65
		Wet
7	Lightening impulse withstand voltage		KV	75	95/125
8	Rated Short-time Withstand Current (4s)		KA	20/25/31.5/40
9	Rated Short Circuit Breaking Current(Peak)		KA	40/50/63/80/100
10	Protection type			IP4X for housing