KYN28A-12 Armored withdrawable AC metal-clad switchgear

The company is a manufacturing enterprise that integrates research and development, design, manufacturing, and sales of complete sets of transmission and distribution equipment.

KYN28A-12 Armored withdrawable AC metal-clad switchgear

Category Ring Main Unit

Description

The KYN28-12 metal-enclosed switchgear is suitable for 7.2~12kV three-phase AC 50Hz power grids. It is used for receiving and distributing electrical energy, as well as controlling, monitoring, and protecting circuits.

Overview
　　The KYN28-12 metal-clad withdrawable switchgear is suitable for 7.2~12kV three-phase AC 50Hz power grids. It is used for receiving and distributing electrical energy, and for controlling, monitoring, and protecting circuits. It can be used in single busbar and single busbar sectionalizing systems. It complies with IEC298 “AC metal-enclosed switchgear and controlgear above 1kV and up to 52kV”, OEC694 “Common clauses for high-voltage switchgear and controlgear”, GB3906 “3.6kV-40.5kV AC metal-enclosed switchgear and controlgear”, GB11022 “Common technical conditions for standards of high-voltage switchgear and controlgear”, and DL/T404 “3.6kV-40.5kV AC metal-enclosed switchgear and controlgear”, and has complete and reliable anti-misoperation functions.
Usage Environmental Conditions
　　• Ambient temperature: Maximum temperature +40℃, minimum temperature -15℃.

　　• Ambient humidity: Daily average relative humidity not exceeding 95%, monthly average not exceeding 90%.

　　• Altitude: Not exceeding 1000m.

　　• Earthquake resistance: Seismic intensity not exceeding level 8.

　　• The surrounding air should not be significantly polluted by corrosive or combustible gases, water vapor, etc. No frequent violent vibrations.

　　• When used under conditions exceeding the normal environmental conditions specified in GB3906, it shall be negotiated between the user and our company.
Technical Parameters
Switchgear Technical Parameters

Item	Unit	Data
Rated Voltage	kV	7.2、12
Rated Frequency	Hz	50
Rated Current	A	630~4000
Rated Insulation	Imin Power Frequency Withstand Voltage (relative to ground/open circuit)	kV	28/32、42/48
Level	Lightning Impulse Withstand Voltage (relative to ground/open circuit)	kV	60/70、75／85
Rated Short-Time Withstand Current (4S)	kA	20，25，31.5，40，50
Rated Peak Withstand Current	kA	50，63，80，100，125
Protection Level		Shell IP4X, IP2X when the trolley compartment door is open
Dimensions (Width × Depth × Height)	mm	800(1000)x1500(1700,1900) x 2370
Weight	kg	800~1200

　　For rated short-time withstand current of 31.5kA and below, and branch busbar rated current of 1600A and below, the cabinet width is 800mm;

　　For rated short-time withstand current of 40kA and above, and branch busbar rated current of 1600A and above, the cabinet width is 1000mm, and the cabinet depth is selected by the user according to the scheme.

　　This switchgear is equipped with SCHVI vacuum circuit breakers manufactured by our company, and can also be equipped with Siemens 3AE and 3AJ1, ABB VD4 and HD4, and Schneider Evolis and EV12 vacuum circuit breakers.
Ordering Information
　　Please provide the following information when ordering:

　　• Switchgear model, quantity, delivery date and primary scheme number;

　　• Primary system diagram, secondary principle diagram and switchgear arrangement diagram;

　　• Main busbar rated current and model and specifications of primary components;

　　• Special requirements (if any).