Armored Removable AC Metal Enclosed Switchgear,KYN28A-12/24

EXKYN28A-12/24

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PRODUCT DESCRIPTION

EXKYN28A-12/24kV(GZS1)type armored removable AC metal-enclosed switchgear (hereinafter referred to as"switchgear"} is suitable for three-phase AC 50Hz power system for receiving and distributing power and controlling,protecting and monitoring of the circuit in real time.The newly introduced and developed large current and high breaking switchgear can also he used as a high-voltage generator export.
The product is in line with GB3906"3-35KVAC metal enclosed switchgear".GB/T11022"common technical requirements of high-voltage switchgear and control equipment standard",IEC62271"AC metal-enclosed switchgear and control equipment with rated voltage 1kV above 52kV and below"

The Technical Specifications of this KYN28A-12/24 Switchgear define its electrical and mechanical parameters for medium-voltage power distribution applications. The Armored Removable Metal Enclosed Switchgear is suitable for three-phase AC 50Hz power systems for receiving and distributing power, and for controlling, protecting, and monitoring circuits in real time. This 12kV/24kV High Voltage Switchgear is a newly introduced and developed large current and high breaking switchgear that can also be used as a high-voltage generator outlet. The KYN28A-12/24 Switchgear complies with GB3906"3-35kV AC metal enclosed switchgear", GB/T11022, and IEC62271 standards. This Armored Removable Metal Enclosed Switchgear features rated circuit breaker currents ranging from 630A to 4000A, with rated short-time withstand currents of 16, 20, 25, 31.5, 40, and 50kA. The 12kV/24kV High Voltage Switchgear offers rated short circuit breaking currents matching these values and rated peak withstand currents up to 125kA. Each KYN28A-12/24 Switchgear provides power frequency withstand voltages between poles of 24, 32, and 42kV, and lightning impulse withstand voltages of 40, 60, and 75kV, ensuring reliable operation in 12kV and 24kV distribution networks.

THE MAIN TECHNICAL PARAMETERS

ltem			Unit	Data
Rated power supply			kV	3.6、7.2、12、24
Rate frequency			Hz	50
Rated current of circuit breaker			A	630、1250、1600.2000、2500.3150、4000
Rated current of switchgear			A	630、1250、 1600、2000、2500、3150.4000
Rated short-time withstand current(4s)			kA	16、20、25、31.5、40、50
Rated peak withstand current(peak)			kA	40,50、63、80、100、125
Rated short circuit breaking current			kA	16、20、25、315、40、50
Rated short circuit closing current(peak)			kA	40.50、63、80、100、125
Rated insulation level	1min power frequency withstand voltage	Between the poles	kV	24、32、42
		Between fractures	kV	24、32、48

	Lightning impose withstand voltage (peak)Between	Between the poles	kV	40.60、75

		Between the poles	kV	46、70,85
Protection class			The enclosure is IP4X,compartment, and the circuit breaker compartment is IP2X when the dooris open.

Note:1.The short-circuit capacity of the current transformer should he considered separately:
2.See VAC63A-12 technical parameters in the corresponding sample.
3.1000m-altitude rated current≤1250A rated breaking current≤31.5kA.

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